a
- AC
Alternating Current or AC is a type of flow of electric charge which periodically reverses direction. Example mains supply.
- Actuation Time
The time interval, measured in ms, from coil energization, to the closing of a normally open reed contact.
- Aging
Buzzing is a process by which a batch of reed switches are operated mechanically at high speeds with no load, inside a coil.
- AlNiCo
AlNiCo is a type of permanent magnet which is made from an alloy of Aluminium, Nickel, Cobalt and Iron.
- Alternating Current
Alternating Current or AC is a type of flow of electric charge which periodically reverses direction. Example mains supply.
- Ampere-Turn
Ampere-turn or AT is the SI unit of magneto-motive force and is a direct measure of a reed contact's magnetic sensitivity.
- Ampere-Turn/Metre
Ampere-turn/metre is the SI unit of coercivity. The equivalent CGS system unit is Oersted, and 1 AT/m = 4π/1000 Oersteds.
- Annealing
Annealing is a process of heating a material quickly and cooling it down slowly, in order to reduce internal stress.
- antiferromagnetic
Anti-ferro-magnetism is a phenomenon by which a magnetic field creates parallel but opposing spins and varies with temperature.
- Anti-ferro-magnetism
Anti-ferro-magnetism is a phenomenon by which a magnetic field creates parallel but opposing spins and varies with temperature.
- Arc Suppression
Contact Protection circuits are simple circuits that suppress in-rush current generated by Inductive or Capacitive loads.
- Arcing
Arcing is the discharge of current that jumps a gap in a circuit or between two electrodes or opposite polarity.
- Armature
A Reed blade, is one of the two flattened parts that form the cantilever and current carrying parts of a reed switch.
b
- Back EMF
Back EMF is the voltage that occurs where there is relative motion between the armature and the magnetic field from the motor.
- Bake-out
Bakeout is a process by which parts are exposed to heat in a controlled atmosphere to release surface impurities.
- Bakeout
Bakeout is a process by which parts are exposed to heat in a controlled atmosphere to release surface impurities.
- Bi-stable
A Bi-stable is an electronic circuit that has two stable states. Latching type of reed contacts are bi-stable.
- Bias
A bias is a permanent magnet placed very near a normally open reed contact to oppose or aid its operation.
- Bifilar Winding
A Bifilar winding is a coil with two wires are wound simultaneously with the turns of each winding being contiguous.
- bistable
A Form E type or latching, or bi-stable type of reed contact, stays in the last energized state. A magnet of opposite polarity changes its state.
- Bounce
Bounce is the period during which reed blades make multiple closures intermittently before providing full unbroken contact.
- Bounce Time
Bounce Time of a reed contact, measured in ms, is the time taken for to bounce before providing full unbroken contact.
- Break
Release or Break is defined as the opening of closed contacts. Release of Reed contacts is measured in Ampere-Turns.
- Break Before Make
A Form C type or Break before Make type of reed contact is a change-over type of contact having three leads.
- Breakdown Voltage
Breakdown Voltage, measured in Volts, is the voltage which may be applied across the leads of a reed contact without causing arcing, breakdown, or leakage.
- Bridging
Bounce is the period during which reed blades make multiple closures intermittently before providing full unbroken contact.
- Buzzing
Buzzing is a process by which a batch of reed switches are operated mechanically at high speeds with no load, inside a coil.
c
- Cadmium
Cadmium is a a soft bluish-white metal, is chemically similar to Zinc and Mercury, and is toxic. It is banned under RoHS.
- Capacitance
Capacitance is the ability of a system to store an electric charge, and is expressed in Farads.
- Capacitive Load
A capacitive load is a type of load that contain little resistance or inductance and mostly capacitance. for example motors.
- Carry Current
Carry Current of a reed contact, measured in Amperes, is the maximum current that can be applied to an already closed contact.
- CGS
CGS is an acronym for the Centimeter-Gram-Second system of units. It has been superseded by SI units.
- Chatter
Bounce is the period during which reed blades make multiple closures intermittently before providing full unbroken contact.
- Close differential
Close Differential or Low Differential is the term used to denote a reed contact with a differential of minimum 70%.
- Coercivity
Coercivity is the demagnetization force required to reduce polarization or induction of a magnetic material to zero.
- Coil
Test Coil is an assembly consisting of one or more windings on a bobbin and is used to measure the AT of a reed contact.
- Contact Dwell
Dwell of a change-over contact, is the difference, in AT, between the closing of the NO contact and the opening of the NC contact.
- Contact Force
Contact force is the force between the overlapping part of the two reed blades of a reed switch in actuated, closed condition.
- Contact Gap
Contact gap, measured in microns, is the distance between the mating reed blades of a Reed Switch in open state.
- Contact Noise
Contact Noise is the irregular fluctuations that accompany a transmitted electrical signal that are not part of it .
- Contact Protection
Contact Protection circuits are simple circuits that suppress in-rush current generated by Inductive or Capacitive loads.
- Contact Rating
Contact Rating, in Watts, is the maximum power a reed contact can switch. Loads other than resistive will require contact protection.
- Contact Resistance
Contact Resistance measured in milli-ohms, is the electrical resistance of a reed contact in closed state, measured across leads.
- Copper
Copper is an element with symbol Cu and atomic number 29. It is used in cladding reed switches for radio frequency applications.
- Counter Electromotive Force
Back EMF is the voltage that occurs where there is relative motion between the armature and the magnetic field from the motor.
- CR
Contact Resistance measured in milli-ohms, is the electrical resistance of a reed contact in closed state, measured across leads.
- Curie Temperature
Curie Temperature is the temperature above which a Ferro-magnetic material loses its Ferro-magnetism and becomes Para-magnetic.
d
- DC
Direct Current or DC is a type of flow of electric charge which is only in one direction. It is used for example, in batteries.
- DCR
Dynamic Contact Resistance measured in milli-ohms, is the electrical resistance of closed contacts, when the contact is in continuous operation under load.
- Degreasing
Degreasing is a surface finishing process for surface cleansing of metal parts using solvents in vapor form.
- Delta Contact Resistance
Variable Contact Resistance is the difference between the lowest and the highest Contact Resistance of multiple readings.
- Dia-magnetic
Dia-magnetism is a phenomenon exhibited by materials such as Copper, that become magnetized in a magnetic field.
- Dia-magnetism
Dia-magnetism is a phenomenon exhibited by materials such as Copper, that become magnetized in a magnetic field.
- Dielectric Strength
Breakdown Voltage, measured in Volts, is the voltage which may be applied across the leads of a reed contact without causing arcing, breakdown, or leakage.
- Differential
Differential of a reed contact, measure in AT is the difference between it operate AT and its release AT.
- DIP
A Dual Inline Package is a chip or device package that contains two rows of connection pins that can be soldered.
- Direct Current
Direct Current or DC is a type of flow of electric charge which is only in one direction. It is used for example, in batteries.
- Drop-out Range
Release Range or Drop-out Range is the range of available or possible release AT values for a reed switch or reed sensor.
- Dual Inline Package
A Dual Inline Package is a chip or device package that contains two rows of connection pins that can be soldered.
e
- Electro-magnet
An Electro-magnet is an assembly consisting of a coil on a soft metal core, that exhibits magnetism when energized.
- Electro-motive Force
Electro-motive Force or EMF, is a measure of the energy that causes current to flow through a circuit.
- Electro-static Discharge
Electro-static discharge is the release of static electricity when two objects come into contact.
- Electromagnetic Coil
Test Coil is an assembly consisting of one or more windings on a bobbin and is used to measure the AT of a reed contact.
- Electroplating
Electroplating or Plating is a process of depositing a thin coating of metal on a conductive surface.
- EMF
Electro-motive Force or EMF, is a measure of the energy that causes current to flow through a circuit.
- Encapsulation
Potting or encapsulation is a process of filling a housing with an electronic assembly with a compound that sets after curing, for resistance to shock and vibration, and for exclusion of moisture and corrosive agents.
- ESD
Electro-static discharge is the release of static electricity when two objects come into contact.
f
- Ferri-magnetic
Ferri-magnetism is a phenomenon exhibited by Ferrites, for example, having parallel but opposite alignment of neighboring atoms.
- Ferri-magnetism
Ferri-magnetism is a phenomenon exhibited by Ferrites, for example, having parallel but opposite alignment of neighboring atoms.
- Ferrite
A Ferrite is a type of compound that exhibits magnetic properties and is made from ceramic compounds derived from Iron Oxides.
- ferro-magnetic
Ferro-magnetism is a phenomenon where materials like Iron, tend to become magnetized in the presence of an external magnetic field.
- Ferro-magnetism
Ferro-magnetism is a phenomenon where materials like Iron, tend to become magnetized in the presence of an external magnetic field.
- Ferrofluid
A Ferrofluid, is a liquid that becomes strongly magnetized in the presence of a magnetic field.
- Float Switch
A Float Switch is an assembly of a reed contact and an external magnet encapsulated in a foamed float, to sense a fluid level.
- Flow Meter
A Flow Sensor is a device used to quantify the volume of fluid passing through a point in a pipe.
- Flow Sensor
A Flow Sensor is a device used to quantify the volume of fluid passing through a point in a pipe.
- Flow Switch
A flow switch is a mechanical switch that changes state in the presence or absence of flow of fluid through it.
- Form A
A Form A or Normally Open type of contact stays in an "open" state until actuated with an external magnet or coil.
- Form A
A normally open or NO type of contact is one that normally does not allows electricity to flow until it is signaled to close.
- Form B
A normally closed or NC type of electrical contact is one that normally allows electricity to flow until it is signaled to open.
- Form B
A Form B or normally closed type of reed contact stays in a closed state until actuated with an external magnet or coil.
- Form C
A Form C type or Break before Make type of reed contact is a change-over type of contact having three leads.
- Form D
A Form D or Make Before Break type of reed contact is a change-over type of contact having three leads.
- Form E
A Form E type or latching, or bi-stable type of reed contact, stays in the last energized state. A magnet of opposite polarity changes its state.
- Four-terminal Sensing
Kelvin Sensing uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements.
g
- Gauss
Gauss is the CGS unit of magnetic induction. The equivalent SI unit is Tesla, and 1 Gauss = 10^-4 Tesla.
- Gilbert
Gilbert is the CGS unit of magneto-motive force. The equivalent SI unit is Ampere-turn, and 1 Gilbert = 10/4π or 0.7958 AT.
- Glass to Metal Seal
Glass to metal seals are what intimately and hermetically seal metal parts within a glass housing or tube.
- Gold
Gold is a soft yellow metal and is sometimes used as an under-layer in reed switches, but can cause some sticking.
h
- Hall Effect Sensor
A Hall Effect Sensor is a transducer which varies its output voltage in response to changes in an external magnetic field.
- Hard Ferrite
A Hard Ferrite is a type of Ferrite where magnetism is inherent in it, and does not require an external field to stay magnetized.
- Helmholtz Coil
A Helmholtz coil is a device named after a German scientist, for producing a region of nearly uniform magnetic field.
- Hermetic
Hermetic describes a type of closure or seal that is complete and airtight and isolated from the atmosphere.
- Hexavalent Chromium
Hexavalent chromium refers to chemical compounds of Chromium in the +6 oxidation state that is recognized as a human carcinogen.
- Homogenous Materials
A homogeneous material is defined as either a raw material or a material applied during the construction of a product.
- Hysteresis
Differential of a reed contact, measure in AT is the difference between it operate AT and its release AT.
i
- Incremental Resistance
Dynamic Contact Resistance measured in milli-ohms, is the electrical resistance of closed contacts, when the contact is in continuous operation under load.
- Inductive Load
An inductive load is type of load made of wound or coiled wire, for example transformers or coils, that causes inrush current.
- Inert Gas
An inert gas is one which does not react with other elements, for example Noble gases and Nitrogen.
- Inrush Current
Inrush Current or Surge Current, is the maximum instantaneous input current drawn by a device when first turned on.
- Insulation Resistance
Insulation resistance, measured in Ohms, is the electrical resistance measured between open terminals of a reed contact.
- Internet of Things
The Internet of Things, or IoT, refers to physical objects that require an IP address, and collect information for a service.
- IoT
The Internet of Things, or IoT, refers to physical objects that require an IP address, and collect information for a service.
- Iridium
Irridium is a a very dense, hard, brittle, silvery-white metal and is sometimes used as a contact material in reed switches.
k
- Kelvin Sensing
Kelvin Sensing uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements.
l
- Lamp Load
A lamp load is a type of load that generates Inrush current when lighting up. Reed Switches need protection for such loads.
- latching
A Bi-stable is an electronic circuit that has two stable states. Latching type of reed contacts are bi-stable.
- LED
A Light Emitting Diode or LED, is a semiconductor device that emits light when an electrical current is passed through it.
- Level Switch
A Float Switch is an assembly of a reed contact and an external magnet encapsulated in a foamed float, to sense a fluid level.
- Level Transducer
A Level Sensor is an assembly that is a PCB assembly fitted inside a tank, consisting of multiple reed switches and resistors.
- Level Sensor
A Level Sensor is an assembly that is a PCB assembly fitted inside a tank, consisting of multiple reed switches and resistors.
- Life Test
A Life Test is the process of testing a product by subjecting it to conditions in excess of its normal service parameters in an effort to uncover faults.
- Light Emitting Diode
A Light Emitting Diode or LED, is a semiconductor device that emits light when an electrical current is passed through it.
- Line Voltage
Alternating Current or AC is a type of flow of electric charge which periodically reverses direction. Example mains supply.
- Line Voltage
Line Voltage is the potential difference between line and neutral phases of a three phase Mains Electricity AC supply.
- Low Differential
Close Differential or Low Differential is the term used to denote a reed contact with a differential of minimum 70%.
- Low Hysteresis
Close Differential or Low Differential is the term used to denote a reed contact with a differential of minimum 70%.
m
- Magnet
A Magnet is a type of material, primarily of an Iron alloy, that has its component atoms so ordered, that it exhibits magnetism.
- Magnet Performance
Maximum Energy Product or BHmax of a magnet, is the product of its B Field and H field and is a measure of it strength.
- Magnet Sensor
A Magnet Sensor is a device that uses a reed switch, and is encapsulated in a housing for easy mounting or clamping.
- Magnetic Induction
Magnetic Flux is a measure of the strength of a magnetic field over a given area, and is expressed in Weber.
- Magnetic Shunt
A Magnetic Shield or a Shunt, is a material of high magnetic permeability, that is used to protect circuits from external magnetic fields.
- Magnetic Field Strength
Magnetic Field Strength is the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow.
- Magnetic Flux
Magnetic Flux is a measure of the strength of a magnetic field over a given area, and is expressed in Weber.
- Magnetic Ordering Temperature
Magnetic Ordering Temperature is the temperature above which a Ferri-magnetic material becomes Para-magnetic.
- Magnetic Permeability
Magnetic Permeability is the ability of a material to get magnetized and hold magnetism in the presence of a magnetic field.
- Magnetic Saturation
Magnetic saturation exists when an increase of magnetization applied to a reed contact does not increase the magnetic flux through.
- Magnetic Shield
A Magnetic Shield or a Shunt, is a material of high magnetic permeability, that is used to protect circuits from external magnetic fields.
- Magneto-motive Force
Magneto-motive force is a quantity representing the line integral of the magnetic intensity around a closed line.
- Make
Operate or Make is defined as the closing of open contacts. The operate of a reed contact is measured in Ampere-Turns.
- Make Before Break
A Form D or Make Before Break type of reed contact is a change-over type of contact having three leads.
- Maximum Switching Power
Contact Rating, in Watts, is the maximum power a reed contact can switch. Loads other than resistive will require contact protection.
- Maximum Energy Product
Maximum Energy Product or BHmax of a magnet, is the product of its B Field and H field and is a measure of it strength.
- Maxwell
Maxwell is the CGS system unit of magnetic flux. The equivalent SI unit is Weber, and 1 Maxwell = 10^-8 Webers.
- Mercury
Mercury is a heavy, silvery metal that is liquid at room temperature and atmospheric pressure, and when ingested, is poisonous.
- Mercury Switch
A Tilt Switch is a reed switch based device which gives out a signal at a pre-defined tilt angle.
- MGOe
MegaGauss-Oersted is the CGS unit of the Maximum Energy product (BHmax) of a magnet, which is a measure of stored energy.
- MKS
The MKS is a physical system of units that expresses any given measurement using the Metre, Kilogram, and/or Second.
- Molybdenum
Molybdenum is a silvery white metal used as a contact material in reed switches for switching high current loads.
n
- NC
A normally closed or NC type of electrical contact is one that normally allows electricity to flow until it is signaled to open.
- NdFeB
NdFeB is a rare-earth magnet made from an alloy of Neodymium, Iron and Boron to form the Nd2Fe14B tetragonal structure.
- Normally Closed
A Form B or normally closed type of reed contact stays in a closed state until actuated with an external magnet or coil.
- Normally Open
A Form A or Normally Open type of contact stays in an "open" state until actuated with an external magnet or coil.
- Normally Closed
A normally closed or NC type of electrical contact is one that normally allows electricity to flow until it is signaled to open.
- Normally Open
A normally open or NO type of contact is one that normally does not allows electricity to flow until it is signaled to close.
o
- OAT
Operate Ampere-Turn, also known as Pull-in, is a measure in Ampere-turns, of the point at which a reed contact opens.
- Oersted
Oersted is the CGS system unit of magnetic field strength. The equivalent SI unit is Ampere-turn/metre.
- Omni-polar
An omni-polar device is a component that can fully function with either pole of a magnet. It is not polarity sensitive.
- Operate
Operate or Make is defined as the closing of open contacts. The operate of a reed contact is measured in Ampere-Turns.
- Operate AT
Operate Ampere-Turn, also known as Pull-in, is a measure in Ampere-turns, of the point at which a reed contact opens.
- Operate Range
Operate Range or Pull-in Range is the range of available or possible operate AT values for a reed switch or a reed sensor.
- Operate Time
The time interval, measured in ms, from coil energization, to the closing of a normally open reed contact.
- Operating Frequency
Operating Frequency of a reed contact, measured in Hertz (Hz), is the maximum speed at which it can be operated.
- Operating Temperature
The temperature limit over which a reed contact or magnet will cease to meet specified operating parameters.
- Over-drive
Over-drive, is the extra Ampere-turn applied to a reed contact after closure, before measurement of Contact Resistance.
p
- Palladium
Palladium is a rare silvery-white metal and is sometimes plated as an under layer in reed switches.
- para-magnetic
Para-magnetism is exhibited by materials that tend to become magnetized when a magnetic field is present, but lose it when absent.
- Para-magnetism
Para-magnetism is exhibited by materials that tend to become magnetized when a magnetic field is present, but lose it when absent.
- PCB
A Printed Circuit Board is a thin board made of a laminate material on which conductive pathways are etched or "printed".
- Plating
Electroplating or Plating is a process of depositing a thin coating of metal on a conductive surface.
- Polarity Sensitive
Polarity sensitive devices are those which require only a specific polarity of magnet to get them to change state.
- Potting
Potting or encapsulation is a process of filling a housing with an electronic assembly with a compound that sets after curing, for resistance to shock and vibration, and for exclusion of moisture and corrosive agents.
- Pressing
Pressing or Stamping is a process by which metals in the shape of wires or sheets are formed using a tool or a die.
- Printed Circuit Board
A Printed Circuit Board is a thin board made of a laminate material on which conductive pathways are etched or "printed".
- Proximity Sensor
A Magnet Sensor is a device that uses a reed switch, and is encapsulated in a housing for easy mounting or clamping.
- Pull-in Range
Operate Range or Pull-in Range is the range of available or possible operate AT values for a reed switch or a reed sensor.
r
- RAT
Release AT, also known as Drop-out, is a measure in Ampere-turns, of the point at which a reed contact opens.
- Re-closure
Re-closure of a reed contact, measured in AT, is the second closure which occurs after further magnetic energization of an already open, NC reed contact.
- Reed Blade
A Reed blade, is one of the two flattened parts that form the cantilever and current carrying parts of a reed switch.
- Contact
Contact is the current-carrying parts of a reed contact that engage or disengage to close or open electrical circuits.
- Reed Relay
A Reed Relay is a device having single or multiple Reed Switches within a coil that help switch higher loads.
- Reed Sensor
A reed sensor is a device using a reed switch, having additional functionality such as improved shock resistance, etc.
- Reed Switch
A reed switch is a passive device consisting of two reed blades sealed inside a glass tube, that operates when brought near a magnet.
- Release
Release or Break is defined as the opening of closed contacts. Release of Reed contacts is measured in Ampere-Turns.
- Release AT
Release AT, also known as Drop-out, is a measure in Ampere-turns, of the point at which a reed contact opens.
- Release Range
Release Range or Drop-out Range is the range of available or possible release AT values for a reed switch or reed sensor.
- Release Time
Release time of a reed contact, measured in ms, is the time interval from coil de-energization to the opening or change over.
- Remanence
Remanence is the magnetization left behind in a ferro-magnetic material after an external magnetic field is removed.
- Resistive Load
A Resistive Load is a type of load that contains no inductance or capacitance, for example, incandescent light bulbs.
- Resonant Frequency
Resonance frequency of a reed contact, measured in Hertz, is the maximum operating frequency that a reed contact can withstand.
- Rhodium
Rhodium is a hard silvery-white metal having resistance to corrosion, and is used as a contact material in reed switches.
- RoHS
RoHS or Restriction of Hazardous Substances, originated in the EU and restricts the use of specific hazardous materials.
- Ruthenium
Ruthenium is a a hard silvery-white metal having a high melting point and excellent wear resistance.
s
- Saturation
Magnetic saturation exists when an increase of magnetization applied to a reed contact does not increase the magnetic flux through.
- Shielded Cable
A shielded cable is one with one or more cables inside, enclosed by a layer that shields the cables from external electrical noise.
- Shock Resistance
Shock resistance of a reed contact, is the acceleration limit and sine-wave duration in milli-seconds that an open reed contact can withstand without changing state.
- SI
SI is an acronym for Système International d'Unités or the International System of units which is the Metric System.
- Silver
Silver is a soft, white, transition metal having the highest electrical and thermal conductivity of any metal.
- Single Inline Package
A Single Inline Package or SIP is a chip or device package that contains only a single row of connection pins that are soldered.
- Single Pole Double Throw
A Single Pole Double Throw switch is a type of that has a single input and can connect to a dual outputs.
- Single Pole Single Throw
A Single Pole Single Throw switch is a type of switch that has a single input and can connect to a single output.
- SIP
A Single Inline Package or SIP is a chip or device package that contains only a single row of connection pins that are soldered.
- SmCo
SmCo is a rare earth magnet made from an alloy of Samarium and Cobalt to form SmCo5 or Sm2Co17 compounds.
- SMD
A Surface-mount Device is an electronic component that mounts on the surface of a printed circuit board.
- SMT
Surface-mount Technology is a design standard for electronic circuits where components are mounted directly onto the surface of a PCB.
- Soft Ferrite
A Soft Ferrite is a type of Ferrite where permanent magnetism is not inherent, and requires an external field to magnetize it.
- Soldering
Soldering is the process of joining two or more metals together by melting and flowing a filler metal with a lower melting point.
- Soldering Dwell
Dwell time during soldering, is the amount of time a component's lead is in contact with a solder wave or the tip of a hand soldering Iron.
- SPDT
A Single Pole Double Throw switch is a type of that has a single input and can connect to a dual outputs.
- SPST
A Single Pole Single Throw switch is a type of switch that has a single input and can connect to a single output.
- Sputtering
Sputtering is a process that uses ions of an inert gas to dislodge atoms from the surface of a target, and have them deposited on a substrate.
- Stamping
Pressing or Stamping is a process by which metals in the shape of wires or sheets are formed using a tool or a die.
- Static Contact Resistance
Static contact resistance, measured in milli-ohms, is the electrical resistance of a reed contact in closed state.
- Surface-mount Device
A Surface-mount Device is an electronic component that mounts on the surface of a printed circuit board.
- Surface-mount Technology
Surface-mount Technology is a design standard for electronic circuits where components are mounted directly onto the surface of a PCB.
- Surge Current
Inrush Current or Surge Current, is the maximum instantaneous input current drawn by a device when first turned on.
- Switching Current
Switching current of a reed contact, measured in Amperes, is the maximum current a reed contact can switch.
- Switching Frequency
Switching frequency, measured in Hertz (Hz), is the maximum frequency at which a reed contact can operate with no loss in pulses.
- Switching Voltage
Switching voltage of a reed contact, measured in volts, is the maximum voltage a reed contact can switch.
t
- Tesla
Tesla is the SI unit of magnetic flux density. The equivalent CGS system unit is Gauss, and 1 Tesla = 10^4 Gauss.
- Test Coil
Test Coil is an assembly consisting of one or more windings on a bobbin and is used to measure the AT of a reed contact.
- Thermal EMF
The EMF generated by a reed contact when the reed contact unit is subjected to a temperature differential.
- Thermal Ferrite
A Thermal Ferrite is special Ferrite compound which changes from being Ferro-magnetic to Para-magnetic, at its Curie Point.
- Thermal Reed Switch
A Thermal Reed Switch is an assembly consisting of a Reed Switch, a Thermal Ferrite and magnets that can sense a set temperature.
- Tilt Switch
A Tilt Switch is a reed switch based device which gives out a signal at a pre-defined tilt angle.
- Tin
Tin is a chemical element with symbol Sn (Stannum in Latin) and atomic number 50. It is used on Reed Switch leads.
- Tungsten
Tungsten is a hard metal which is used as a contact material in reed switches due to its resistance to damage by arcing.
u
- Ultrasonic Welding
Ultrasonic Welding is the process of joining two plastic work pieces by using high frequency acoustic vibrations
v
- Vacuum Deposition
Vacuum Deposition is process of depositing a thin film under vacuum or a low-pressure plasma environment on a substrate.
- Variable Contact Resistance
Variable Contact Resistance is the difference between the lowest and the highest Contact Resistance of multiple readings.
- VCR
Variable Contact Resistance is the difference between the lowest and the highest Contact Resistance of multiple readings.
- Vibration Resistance
Vibration resistance of a reed contact, is the acceleration level and frequency range that an open or closed reed contact can withstand without changing state.
w
- Weber
Weber is the SI unit of magnetic flux. The equivalent CGS system unit is Maxwell, and 1 Weber = 10^8 Maxwell.
- Welding
Welding is the process of joining two metals or plastics by heating the surfaces to the point of melting, and uniting them.
