UM-0018-M Ultra Miniature Reed Switch
Features
5.0 mm Glass length. Ruthenium contact. Normally Open. Inert gas filled. 4 types of Lead Formations.
Benefits
Omni-polar. Does not require power for operation. Sputtered Contact. RoHS Compliant. Not ESD Sensitive.
Description
These highly sensitive, Form A type, Ultra miniature reed switches are designed for low power, high speed switching applications. The 5 mm glass version is built for use in very compact applications. The flattened leads are useful for orienting all reed switches in a batch, in one way, while soldering, welding etc., for maximum in-group sensitivity. The 5.0 mm glass version can be molded with a 0.25 mm wall around the glass capsule for use in hazardous industrial environments to withstand higher shock and vibration. The cropped version is suitable for smaller plastic housings and can be soldered to cables or used on SMT PCB’s with slots, the SMD version is suitable for reflow soldering on SMT PCBs, and the vertical and horizontal mount versions are suitable for mounting on through hole PCBs.
Standard Magnets
 | We offer a range of magnets for customers using our products, in different sizes...Continue reading |
Actuation Distances for UM-0018-M Reed Switches
 | For easy selection of AT band and Magnet for an application, we offer Actuation...Continue reading |
Electrical
| Operate Range | AT | 7-20 |
| Release Range | AT | 3-18 |
| Contact Rating (max) | W/VA | 5.0 |
| Switching Current (max) | A | 0.35 |
| Carry Current (max) | A | 0.5 |
| DC Switching Voltage (max) | VDC | 100 |
| AC Switching Voltage (max) | VAC | 70 |
| Breakdown Voltage (min) | VDC | 150 |
| Contact Resistance (max) | mΩ | 200 |
| Insulation Resistance (min) | Ω | 109 |
| Capacitance (min) | pF | 0.2 |
Miscellaneous
| Operate Time (max) | ms | 0.35 |
| Bounce Time (max) | ms | 0.3 |
| Release Time (max) | ms | 0.1 |
| Resonance Frequency | Hz | >2000 |
| Operating Frequency | Hz | 500 |
| Operating Temperature | °C | -40 to +120 |
| Shock Resistance (½Sin wave for 11ms) | G | 30 |
| Vibration Resistance (10-2000Hz) | G | 20 |
| Test Coil Code | 717 102 003 |
Ordering Code
| Formation Code | C | S | V | H |
| Cropped | SMD | Vertical Mount | Horizontal Mount |
UM-0018-M-(Operate AT Band)-(Formation Code)
Ordering Code Examples
UM-0018-M-7-12 denotes 7-12 Operate AT with unmodified leads
UM-0018-M-15-18-S denotes 15-18 Operate AT band with SMD formed leads
Handling of Reed Switches
 | Reed Switch Handling Reed Switches are sensitive devices that easily develop micro cracks in...Continue reading |
Soldering Guide
 | Manual Soldering of reed switch leads may be required when using custom plastic housing...Continue reading |
Ferro-magnetic parts
 | Reed Switches use an alloy of Nickel and Iron with a few other elements...Continue reading |
Potting and Encapsulation
 | Epoxy dispensing Nozzle When potting or encapsulating reed switch assemblies in custom housings, selection...Continue reading |
Reed Contact Protection Circuits
 | It is assumed that the ideal reed switch load is a Resistive Load, but...Continue reading |
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 switch to a particular field, the following is a list of some of the applications that the UM-0018-M reed switch is known to perform well.
Reed Switches and Reed Sensors in 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 Defibrillation is a treatment for life-threatening cardiac arrhythmia, or irregular heart beat. This...Continue reading |
Reed sensors for detecting Ignition Key
 | Automobile Key The Ignition key on an automobile comes in two types, a manual...Continue reading |
Reed Sensors in Pediatric Feeding tubes
 | Pediatric Feeding Tube Pediatric Feeding tubes are used by nursing homes and hospitals on...Continue reading |
Reed Sensors in Electric Car Chargers
 | Electric Car Charging Station Electrical cars are designed to have a range of 250-300...Continue reading |
Reed switches in Lightsabers
 | Light Saber Light Sabers are weapons used by the Jedi and the Sith, in...Continue reading |
Reed Switches and Reed sensors in Canal Hearing Aids
 | In-canal Hearing Aid As widely known, Hearing Aids are devices designed to improve hearing...Continue reading |
Magnet sensors in Musical Greeting Cards
 | Greeting Card Even in the digital age of Smart phones, people do like to...Continue reading |
Reed sensors in Notebook computers and PC desktops
 | Notebook Computer Notebook computers and Netbooks are part of personal life. Screen time on...Continue reading |
Reed switches and Reed sensors in Spirometers
 | Spirometer for Lung Function Testing A Lung function test or Pulmonary Function test, PFT...Continue reading |
Reed switches in Vagus Nerve Stimulators
 | Vagus Nerve Stimulator The Vagus nerve in the neck is one of the primary...Continue reading |
Reed switches and Reed sensors in Pacemakers
 | Pacemaker Artificial pacemakers are implantable devices that generate electrical impulses to the heart, to...Continue reading |