R5B Ultra-miniature Normally Closed SMD Reed Sensor
Features
5W Contact Rating. Normally Closed contact. Polarity Sensitive. Two sensitivity bands. Packed in Tapes for automatic assembly.
Description
These ultra miniature normally closed SMD reed sensors are built with an biasing magnet. 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, Contact Resistance and Variable Contact Resistance before packing. Opposing poles of magnet and sensor cause this normally closed sensor contact to release. Like poles do not cause a release. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one.
Cylindrical and Rectangular Magnets
 | We offer a range of magnets in different sizes and shapes, specially selected to...Continue reading |
Actuation Distances for R5B NC Reed Sensors
 | Operate and release distances for the R5B ultra-miniature Normally closed reed sensor in the...Continue reading |
Electrical
| Contact Form | B | |
| Contact Rating (max) | W/VA | 5.0 |
| Switching Current (max) | A | 0.35 |
| Carry Current (max) | A | 0.50 |
| DC Switching Voltage (max) | VDC | 100 |
| Breakdown Voltage (min) | VDC | 150 |
| Contact Resistance (max) | mΩ | 200 |
| Insulation Resistance (min) | Ω | 109 |
| Capacitance (typ) | pF | 0.2 |
Miscellaneous
| Operate Time (max) | ms | 0.35 |
| Bounce Time (max) | ms | 0.30 |
| Release Time (max) | ms | 0.15 |
| Resonance Frequency (typ) | Hz | >2000 |
| Operating Frequency (max) | Hz | 500 |
| Operating Temperature Range | °C | -40 to +140 |
| Shock Resistance (½Sin wave for 11ms) | G | 30 |
| Vibration Resistance (10-2000 Hz) | G | 20 |
Ordering Code
R5B-S-(Release Band Code)
| Release Band Code | ||
| 1 | AT | 7-12 |
| 2 | AT | 12-17 |
Examples: R5B-S-1 denotes R5B Normally Closed Reed Sensor with Gull-wing SMD formed leads, in 7-12 Release Band (AT).
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 product. The complete usage notes are available here.
Ampere Turn Selection
 | For any application, it is important to select the correct Ampere Turn (AT) or...Continue reading |
Product Handling
 | Reed Switches, Reed Sensor and Magnet Sensors are sensitive devices that easily develop micro...Continue reading |
Reflow Soldering
 | Reflow Soldering is the process of automatically soldering multiple devices to a PCB. Continue...Continue reading |
Manual Soldering
 | Manual Soldering of reed switch leads may be required when using custom plastic housing...Continue reading |
Ferro-magnetic parts
 | Using Ferro-magnetic mounting parts or screws within a 100 mm vicinity of a reed switch will...Continue reading |
Reed Contact Protection Circuits
 | When a reed switch is to be connected to an inductive load or a...Continue reading |
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 R2 Reed Sensor is known to perform well.
Reed Sensors in In-road Warning Lights
 |
In-road warning lights with biased Reed Sensors are de-activate with a low cost external...Continue reading |
Reed Switches and Reed Sensors in Capsule Endoscopy
 | Capsule Endoscopy is a new process to circumvent problems of regular endoscopy. It consists...Continue reading |
Reed sensors in Emergency lamp holders
 | When emergency lamps are taken off their holders, a buzzer should sound. The lamp...Continue reading |
Reed sensors used in Fuel cap position sensing
 | Driver information. Instrument panel dashboards need to show more and more information for the...Continue reading |
Reed sensors in Telephone Handsets
 | Conventional hook switches which are used in telephone handsets undergo millions of operations and...Continue reading |