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
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R4 Ultra-miniature SMD Reed Sensor

  • R4-S Drawing
  • R4-S PCB Layout Drawing
  • R4-F Drawing
  • R4-F PCB Layout Drawing
  • R4 Reed Sensor Tape Drawing

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 pre-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 omnipolar 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.

Activation Distances for R4 Ultra Miniature Reed Sensors

Operate and release distances for the R4-S miniature SMD reed sensor in the three...Continue reading ->

Standard Magnets

Standard magnets-RRE We offer a range of magnets for customers using our products, in different sizes...Continue reading ->

Electrical

Contact Form   A
Contact Rating (max) W/VA 10.0
Switching Current (max) A 0.5
Carry Current (max) A 0.5
DC Switching Voltage (max) VDC 100
Breakdown Voltage (min) VDC 150
Contact Resistance (max) 200
Insulation Resistance (min) Ω 109
Capacitance (min) pF 0.2

Miscellaneous

Operate Time ms 0.35
Bounce Time (max) ms 0.30
Release Time (max) ms 0.10
Resonance Frequency Hz >2000
Operating Frequency (max) Hz 500
Operating Temperature °C -40 to +140
Shock Resistance (½Sin wave for 11ms) G 30
Vibration Resistance (10-2000Hz) G 20

Ordering Code

OAT Code AT Band
1 10-15
2 15-20

R4-S-(Operate AT Code)

Ordering Code Examples

R4-S-1 denotes R4-S SMD Reed Sensor in 10-16 Operate AT band.

Product Handling

Dropping Reed switch Reed Switch Handling Reed Switches are sensitive devices that easily develop micro cracks in...Continue reading ->

Soldering Guide

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

Ferro-magnetic parts

Ferromagnetic parts Reed Switches use an alloy of Nickel and Iron with a few other elements...Continue reading ->

Potting and Encapsulation

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

Reed Contact Protection Circuits

Inductive Load Protection Circuit It is assumed that the ideal reed switch load is a Resistive Load, but...Continue reading ->

Magnet Information

Magnet Information In general, there are four families of magnets available commercially. Factors such as operating...Continue reading ->

Other Special Configurations Available

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 Endoscopy Pill For most people, an endoscopy is extremely intrusive and uncomfortable. But, before...Continue reading ->

Reed switches and Reed Sensors in Portable Defibrillators

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

Reed Sensors in Electric Car Chargers

E-car charger Electric Car Charging Station Electrical cars are designed to have a range of 250-300...Continue reading ->

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...Continue reading ->

Reed sensors used in Fuel cap position sensing

Automobile Fuel cap Automobile fuel cap open A dashboard or an instrument panel located in front of...Continue reading ->

Reed sensors in weather proof electronics

Water proof reed switch Smart phone using IP67 Housings The IP67 Code or the International Protection Marking states...Continue reading ->

Reed switches in Vagus Nerve Stimulators

Vagus Nerve stimulator Vagus Nerve Stimulator The Vagus nerve in the neck is one of the primary...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