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

R4 Ultra-miniature SMD Reed Sensor

  • Drawing of R4S Reed Sensor PCB Layout
  • Drawing of R4F Reed Sensor PCB Layout

Features

Normally Open contact. Two sensitivity bands. Molded with internal blades parallel to SMD feet. Packed in Tapes for automatic assembly.

Benefits

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

Description

These R4 ultra-miniature SMD reed sensors are designed for signal switching applications and have a size advantage over the standard size SMD reed sensor. As they are molded with flattened leads, no shock is transferred into the device when SMD formation takes place. Various activating distances are available depending on the magnet and the AT band used. The sensors are tested 100% for Operate AT, Release AT, Static Contact Resistance and Variable Contact Resistance before packing. Being an omni-polar device, this sensor can be actuated with either a north pole or a south pole or both. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one. All dimensions are in mm.

Actuation Distances for R4 Ultra Miniature Reed Sensors

Operate and release distances for the R4S ultra miniature SMD reed sensor in the...Continue reading ->

Standard Magnets

Standard magnets-RRE We offer a range of magnets in different sizes and shapes, specially selected to...Continue reading ->

Electrical

Contact FormA
Contact Rating (max)W/VA10.0
Switching Current (max)A0.5
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)ms0.30
Release Time (max)ms0.10
Resonance Frequency (typ)Hz<2000
Operating Frequency (max)Hz500
Operating Temperature Range°C-40 to +140
Shock Resistance (½Sin wave for 11ms)G30
Vibration Resistance (10-2000 Hz)G20

Ordering Code

R4-(Formation Code)-(Operate Band Code)

Formation CodeLead Type
SGull-wing SMD
FLow Profile SMD
Operate Band Code
1AT10-15
2AT15-20

Examples: R4-S-1 denotes R4 Reed Sensor with Gull-wing SMD formed leads in 10-15 Operate band (AT). R4-F-2 denotes R4 Reed Sensor with Low Profile SMD formed leads, in 15-20 Operate Band (AT).

Usage Notes

Here are some of the recommended usage notes to ensure maximum durability of this product. 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...Continue reading ->

Product Handling

Dropping Reed switch Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro...Continue reading ->

Reflow Soldering

Drawing of SMD reflow soldering curve Reflow Soldering is the process of automatically soldering multiple devices to a PCB. Continue...Continue reading ->

Manual Soldering

Soldered Reed switch Manual Soldering of reed switch leads may be required when using custom plastic housing...Continue reading ->

Ferro-magnetic parts

Ferromagnetic parts Using Ferro-magnetic mounting parts or screws within a 100 mm vicinity of a reed switch will...Continue reading ->

Reed Contact Protection Circuits

Inductive Load Protection Circuit When a reed switch is to be connected to an inductive load or a...Continue reading ->

Other Special Configurations

Lower Static Contact Resistance
Dynamic Contact Resistance Limit
Higher Insulation Resistance
Special Release Limits
Gold plated leads

Applications

Although we can never restrict the use of a reed sensor to a particular field, the following is a list of some of the applications that the R4 Reed Sensor is known to perform well.

Reed Switches and Reed Sensors in Capsule Endoscopy

capsule endoscopy Capsule Endoscopy is a new process to circumvent problems of regular endoscopy. It consists...Continue reading ->

Reed switches and Reed Sensors in Portable Defibrillators

Defibrillator Defibrillator and impantable Cardioverter-defibrillators use reed sensors to alter the mode of operation using...Continue reading ->

Reed Sensors in Electric Car Chargers

E-car charger Electrical cars are designed to have a range of 250-300 kilometers on a full...Continue reading ->

Reed Switches and Reed sensors in Canal Hearing Aids

Reed sensors in canal hearing aids A tiny reed sensor inside hearing aids help the user adjust volume levels and...Continue reading ->

Reed sensors used in Fuel cap position sensing

Automobile Fuel cap Driver information. Instrument panel dashboards need to show more and more information for the...Continue reading ->

Reed sensors in weather proof electronics

Water proof reed switch In weather smart phones tablets, hermetically sealed reed sensors within the IP67 enclosure can...Continue reading ->

Reed switches in Vagus Nerve Stimulators

Vagus Nerve stimulator Vagus Nerve stimulators are implantable devices which control the stimulation of impulses to control...Continue reading ->
R4 Ultra-miniature SMD Reed Sensors
R4 SMT reed sensors: 8.5mm body length, gull wing and J-lead, 5W, omnipolar, complete data sheet and technical specifications.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: R4
4.1 based on 9 reviews