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.
Cylindrical and Rectangular Magnets
 | Drawing of Cylindrical MagnetsDrawing of Rectangular Bar Magnets starFeaturesNdFeB High Energy. Nickel coated. Energized Continue reading Nov 18, 2020 |
Actuation Distances for R2 Reed Sensors
 | Operate and release distances for the R2 ultra-miniature reed sensor in the three lead formations and two standard AT bands when actuated Continue reading Oct 29, 2020 |
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).
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 magnetic sensitivity of a Reed Switch, Reed Sensor or Continue reading Aug 27, 2020 |
Product Handling
 | 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 |
Reflow Soldering
 | Reflow Soldering is a process of automatically soldering multiple devices on a PCB. This is usually done after components are Continue reading Aug 28, 2020 |
Manual Soldering
 | 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
 | 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 |
Reed Contact Protection Circuits
 | 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 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 Cooler Air Conditioners remove heat and moisture from an occupied space thereby improving the comfort of the occupants. The Continue reading Nov 6, 2020 |
Reed Sensors in Hotel Security Card Readers
 | Hotel Keycard Slot In most hotels, the most secure method to prevent unauthorized entry and allow only the guest to enter a room is by Continue reading Nov 18, 2020 |
Reed sensors in Automobile Sun Visors
 | Automobile Sun Visor Automobiles are fitted with visors that can be swiveled downwards and outwards to block the sun from the driver or Continue reading Nov 7, 2020 |
Reed switches and Reed Sensors in Barcode Scanners
 | Barcode scanners in supermarkets can be clicked on to a docking system that is integrated with the check-out conveyor belt. This helps Continue reading Nov 6, 2020 |
Reed Switches in Exhaust Emissions Sensing
 | Automobile Exhaust Pollution, greenhouse gases and smog play a large role in global warming and it is most important to ensure that Continue reading Nov 7, 2020 |
Reed switches in Safety Vane applications
 | Conveyor Vane The automation industry depends on feeding systems which feed parts of different shapes into the assembly machine. The Continue reading Nov 7, 2020 |
Magnet Sensors in Treadmills
 | Treadmill Magnet Sensors find a few applications in treadmills for speed and gradient sensing. The speed of the belt is determined by Continue reading Nov 7, 2020 |
Reed Switches and Reed Sensors in Digital Fishing Reels
 | Fishing Gear Digital Fishing reels are an improvement over the standard, well-proven fishing reel and rod used for winding and stowing Continue reading Nov 7, 2020 |
Reed sensors for Tamper-proofing Electricity Meters
 | Electric Companies use meters calibrated to measure 1 kilo-watt-hour and also measure maximum demand, which is the peak kilo-watt Continue reading Nov 6, 2020 |
Reed switches and Reed sensors in Pressure Gauges
 | Pressure Gauge A pressure gauge is an instrument used to display the pressure of a fluid. The most widely used type of pressure gauge Continue reading Nov 7, 2020 |
Reed sensors in Accurate level sensing of fluids
 | Fuel Gauge In ships and yachts, it is not only necessary to monitor the exact volume of fuel, but also the volume of the sewage and the Continue reading Nov 7, 2020 |
Reed sensors in Central Locking of Cars with Remote Keys
 | Automobile Key Central locking allows the driver or front passenger to simultaneously lock or unlock all the doors of an automobile. Continue reading Nov 7, 2020 |
Magnet sensors for Automobile Cruise Control
 | Cruise Control Cruise Control automatically controls the speed of a motor vehicle by adjusting the accelerator so that the driver need Continue reading Nov 7, 2020 |
Reed switches as Impact sensors for triggering airbags
 | Airbags Statistics say almost 80% of automobiles use reed switch based crash sensors for triggering airbags. A ring magnet is mounted Continue reading Nov 7, 2020 |
Magnet sensors for Dish Washer spray arm jam detection
 | Dishwasher Dish Washers are appliances used to automatically wash dishes and cutlery, by spraying high pressure hot water and Continue reading Nov 6, 2020 |
Level Sensing in Washing Machines and Dish Washers
 | Washing Machine Water Level Washing machines and Dish Washers have smaller reservoirs to hold various fluids that help the user in Continue reading Nov 6, 2020 |
Reed sensors and Magnet sensors in Commercial Coffee Machines
 | Coffee Machine Commercial coffee and tea vending machines are built with durability in mind as the number of cups served per day could Continue reading Nov 6, 2020 |
Reed sensors in Notebook computers and PC desktops
 | 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 |
Magnet sensors for Tension Monitoring in Coil Winders
 | Coil Winder Coil Winders help wind bobbins with Copper wire and these bobbins are used in various applications such as in reed relay Continue reading Nov 6, 2020 |