Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

UM-0018-M Ultra Miniature Reed Switch

This highly sensitive, Form A type, UM-0018-M Ultra Miniature Reed Switches are designed for switching high speed signal loads with an Operate Time of less than 0.3 milliseconds. It can reliably switch loads of up to 5W at 100V. The Leads are flattened and are useful for orienting all reed switches in a batch, in one way if required, for maximum in-group sensitivity. Available with cropped leads for use in smaller plastic housings and can be soldered to cables or used on SMT PCB’s with slots. The SMD version is suitable for reflow soldering on SMT PCBs, and the vertical and horizontal mount versions are suitable for use on through hole PCBs.

  • Drawing of UM-0018-M Ultra Miniature Reed Switch with Full Length Leads
  • Drawing of UM-0018-M Reed Switch with cropped leads
  • Drawing of UM-0018-M with SMD Formed Leads
  • Drawing of UM-0018-M with Formed Leads for Horizontal Mounting
  • Drawing of UM-0018-M with Formed Leads for Vertical Mounting
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Features

5.0 mm Glass length. Ruthenium contact. Normally Open. Inert gas filled. 4 types of Lead Formations.

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Benefits

Omni-polar. Does not require power for operation. Sputtered Contact. RoHS Compliant. Not ESD Sensitive.

Cylindrical and Rectangular Magnets

Standard magnets-RRE Drawing of Cylindrical MagnetsDrawing of Rectangular Bar Magnets starFeaturesNdFeB High Energy. Nickel coated. Energized Continue reading ->

Nov 18, 2020

Actuation Distances for UM-0018-M Reed Switches

UM-0018-M reed switch actuation distance For easy selection of AT band and Magnet for an application, we offer Actuation distances for the UM-0018-M Reed Switch in, Cropped, SMD, Continue reading ->

Dec 2, 2020

Electrical

Contact FormA
Contact Rating (max)W/VA5.0
Switching Current (max)A0.35
Carry Current (max)A0.5
DC Switching Voltage (max)VDC100
Breakdown Voltage (min)VDC150
Contact Resistance (max)200
Insulation Resistance (min)Ω109
Capacitance (typ)pF0.2

Miscellaneous

Operate Time (max)ms0.35
Bounce Time (max)ms0.3
Release Time (max)ms0.1
Resonance Frequency (typ)Hz>2000
Operating Frequency (max)Hz500
Operating Temperature°C-40 to +120
Shock Resistance (½Sin wave for 11ms)G30
Vibration Resistance (10-2000Hz)G20
Test Coil Number717 102 003

Ordering Code

UM-0018-M-(Operate Band)-(Formation Code)

Operate BandAT7-20
Corresponding Release BandAT3-18
Formation CodeLead Type
Full Length Leads
CCropped
SSMD
HHorizontal Mount
VVertical Mount

Examples: UM-0018-M-7-12 denotes 7-12 Operate Band (AT) with Full Length leads. UM-0018-M-15-18-S denotes 15-18 Operate Band (AT) with SMD formed leads.

Other Special Configurations: Lower Static Contact Resistance, Dynamic Contact Resistance Limit, Higher Insulation Resistance, Special Release Limits, Gold plated leads.

Usage Notes

Here are some of the recommended usage notes to ensure maximum durability of this reed swtch. The complete usage notes are available here.

Ampere Turn Selection

Reed Sensor Manufacturer Cross Reference For any application, it is important to select the correct Ampere Turn (AT) or magnetic sensitivity of a Reed Switch, Reed Sensor or Continue reading ->

Aug 27, 2020

Product Handling

Dropping Reed switch Reed Switch Handling Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro cracks in the glass Continue reading ->

Aug 31, 2020

Manual Soldering

Soldered Reed switch Soldering of Reed Switches and Reed Sensors requires some care to ensure that these delicate devices are not inadvertently damaged. Damage Continue reading ->

Nov 10, 2020

Ferro-magnetic parts

Ferromagnetic parts Reed Switches use an alloy of Nickel and Iron with a few other elements that make the alloy Ferro-magnetic and having a low Remanence. Continue reading ->

Sep 4, 2019

Potting and Encapsulation

Dispensing unit Epoxy dispensing Nozzle When potting or encapsulating reed switch assemblies in custom housings, selection of materials are important. Continue reading ->

Sep 4, 2019

Reed Contact Protection Circuits

Inductive Load Protection Circuit It is assumed that the ideal reed switch load is a Resistive Load, but it is almost impossible to reduce any load to purely resistive. Continue reading ->

Aug 31, 2020

Applications

Although we can never restrict the use of a reed switch to a particular field, the following is a list of some of the applications that the UM-0018-M Ultra Miniature Reed Switch is known to perform well.

Reed Switches and Reed Sensors in Capsule Endoscopy

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Nov 6, 2020

Reed switches and Reed Sensors in Portable Defibrillators

Defibrillator Defibrillator Defibrillation is a treatment for life-threatening cardiac arrhythmia, or irregular heart beat. This condition is also Continue reading ->

Nov 6, 2020

Reed sensors for detecting Ignition Key

key ignition Automobile Key The Ignition key on an automobile comes in two types, a manual key or a start button as is the case in the newer Continue reading ->

Nov 7, 2020

Reed Sensors in Pediatric Feeding tubes

Pediatric feeding tube Pediatric Feeding Tube Pediatric Feeding tubes are used by nursing homes and hospitals on babies and young children, in an intensive Continue reading ->

Nov 6, 2020

Reed Sensors in Electric Car Chargers

E-car charger Electric Car Charging Station Electrical cars are designed to have a range of 250-300 kilometers on a full charge. To ensure that the Continue reading ->

Nov 7, 2020

Reed switches in Lightsabers

Light Saber Light Sabers are weapons used by the Jedi and the Sith, in the fictional Star Wars Universe, set in a galaxy far, far, Continue reading ->

Nov 7, 2020

Reed Switches and Reed sensors in Canal Hearing Aids

Reed sensors in canal hearing aids In-canal Hearing Aid As widely known, Hearing Aids are devices designed to improve hearing by making sound audible to a person with Continue reading ->

Nov 6, 2020

Magnet sensors in Musical Greeting Cards

Reed switches in musical greeting card Greeting Card Even in the digital age of Smart phones, people do like to mail out or hand over greeting cards taped to gifts, to Continue reading ->

Nov 7, 2020

Reed sensors in Notebook computers and PC desktops

Notebook computer Notebook Computer Notebook computers and Netbooks are part of personal life. Screen time on these devices is anywhere between 2 and 6 Continue reading ->

Nov 6, 2020

Reed switches and Reed sensors in Pacemakers

pacemaker Pacemaker Artificial pacemakers are implantable devices that generate electrical impulses to the heart, to contract the muscles and Continue reading ->

Nov 6, 2020

Reed switches in Vagus Nerve Stimulators

Vagus Nerve stimulator Vagus Nerve Stimulator The Vagus nerve in the neck is one of the primary communication lines to the brain. For patients with epilepsy Continue reading ->

Nov 6, 2020

Reed switches and Reed sensors in Spirometers

Spirometer Spirometer for Lung Function Testing A Lung function test or Pulmonary Function test, PFT for short, is a system to evaluate the Continue reading ->

Nov 6, 2020

UM-0018-M 5W Ultra Miniature Reed Switches
5.0 mm x ø1.80 mm, Flattened leads, complete data sheet and technical specifications. Customers can safely use UM-1018-M in place of RI-80, RD-75AA or HSR-0035R
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: UM-0018-M
4.2 based on 11 reviews