R2 Standard size SMD Reed Sensor
R2-S Gull-wing SMD Formed Reed Sensor 
R2-S Gull-wing SMD Formed Reed Sensor Pad Layout 
R2-F Low Profile SMD Formed Reed Sensor 
R2-F Low Profile SMD Formed Reed Sensor Pad Layout 
R2 Reed Sensor Carrier Tape
Features
10W Contact Rating. Normally Open contact. Three sensitivity bands. Two Lead Formations. Packed in Tapes for automatic assembly.
Description
These R2 standard size SMD reed sensors are designed for carrying moderate current and have an SMD pitch which is slightly wider than the miniature 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 and release AT, 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.
Standard Magnets
 | We offer a range of magnets in different sizes and shapes, specially selected to...Continue reading |
Actuation Distances for R2 Reed Sensors
 | Operate and release distances for the R2S SMD reed sensor in the three standard...Continue reading |
Electrical
| Contact Form | A | |
| Contact Rating (max) | W/VA | 10.0 |
| Switching Current (max) | A | 0.5 |
| Carry Current (max) | A | 1.50 |
| DC Switching Voltage (max) | VDC | 180 |
| Breakdown Voltage (min) | VDC | 200 |
| Contact Resistance (max) | mΩ | 150 |
| 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
R2-(Formation Code)-(Operate Band Code)
| Formation Code | Lead Type |
| S | Gull-wing SMD |
| F | Low Profile SMD |
| Operate Band Code | ||
| 1 | AT | 10-15 |
| 2 | AT | 15-20 |
| 3 | AT | 20-25 |
Examples: R2-S-3 denotes R2 Reed Sensor with Gull wing SMD formed leads, in 20-25 Operate Band (AT). R2-1-F denotes R2 Reed Sensor with Low profile SMD formed Leads, in 10-15 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
 | 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 |
Other Special Configurations
Non standard lead formations
Dynamic Contact Resistance Limit
Special Release AT 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 R2 Reed Sensor is known to perform well.
Float Switches in Portable Air Conditioners
 | Portable ACs cool an area by removing the humidity in the room and storing...Continue reading |
Reed Sensors in Hotel Security Card Readers
 | In most hotels, the simplest method for a guest to enter a room is...Continue reading |
Reed sensors in Automobile Sun Visors
 | A reed sensor and a magnet is used in the sliding mirror assembly to...Continue reading |
Reed switches and Reed Sensors in Barcode Scanners
 | A reed switch and magnet combination is used in the docks and barcode scanners...Continue reading |
Reed Switches in Exhaust Emissions Sensing
 | A simple vane with a magnet fitted inside the tailpipe of automobiles is used...Continue reading |
Reed switches in Safety Vane applications
 | Optic sensor lenses need to be exceptionally clean for vane sensing applications. A reed...Continue reading |
Magnet Sensors in Treadmills
 | The speed of the belt is determined by positioning a reed sensor near the...Continue reading |
Reed Switches and Reed Sensors in Digital Fishing Reels
 | Electric fishing reels are equipped with reed sensors which generate pulse on rotation of...Continue reading |
Reed sensors for Tamper-proofing Electricity Meters
 | To tamper proof Electricity meters, Reed Sensors are placed near the front cover of...Continue reading |
Reed switches and Reed sensors in Pressure Gauges
 | Bourdon tube pressure gauges are fitted with a magnet on the Bourdon tube itself...Continue reading |
Reed sensors in Accurate level sensing of fluids
 | Special reed sensors with an integrated resistor can be mounted on PCBs to give...Continue reading |
Reed sensors in Central Locking of Cars with Remote Keys
 | In newer cars with electronic keys, the key code is compared with onboard computer...Continue reading |
Reed switches for Inclination sensing
 | Recent statistics on automobile accidents reveal that the majority of fatalities arise due to...Continue reading |
Magnet sensors for Automobile Cruise Control
 | A multi pole ring magnet can be attached to the speedometer actuating shaft, and...Continue reading |
Reed switches as Impact sensors for triggering airbags
 | Statistics say almost 80% of automobiles use reed switch based crash sensors for triggering...Continue reading |
Magnet sensors for Dish Washer spray arm jam detection
 | Reed Sensors are used in dish washers for spray arm jam detection and door...Continue reading |
Level Sensing in Washing Machines and Dish Washers
 | Washing machines and dish washers have reservoirs to hold detergent, and fabric or water...Continue reading |
Reed sensors and Magnet sensors in Commercial Coffee Machines
 | Commercial coffee, tea, and milk vending machines need to dispense enough milk or water...Continue reading |
Reed sensors in Notebook computers and PC desktops
 | In notebook computers the screen is closed to put the system into sleep mode....Continue reading |
Magnet sensors for Tension Monitoring in Coil Winders
 | Reed Sensors find an important role in closed loop tension control and coil winding...Continue reading |