The CSMR140 is a power MOSFET optocoupler housed in a 4 Pin LCC package, designed for applications where independent switches with radiation-tolerant performance are necessary. With 1000 VDC isolation between input/output isolated relay, the CSMR140 is well-suited for solid-state relay applications. Its performance is rated for the full military temperature range, making it ideal for demanding environments.

Functionally, the CSMR140 acts as (Single Pole Single Throw), normally open (2 Form A) solid-state relay. The relay is activated by an input current, typically driven by a standard TTL device. The input current biases an AlGaAs emitter that is optically coupled to an integrated diode array, which in turn powers control circuitry to operate the output power MOSFET.
The device is available with screening in accordance with MIL-PRF-38534, Class K/H, or custom screening options or as COTS. The lead options support both through-hole and surface-mount assemblies, with gold-plated leads being standard, though other lead finishes are available.

Key features of the ISOCOM CSMR140 include:

• Compact Isolation Solid State Switches
• Continuous Output Current of 0.8A
• 3A Output Surge
• High Level of Transient Immunity
• Optically Coupled between Input and Output
• Space/Military Screening available
• Full Military temperature range -55°C to +125°C

Typical applications for the ISOCOM CSMR140 include:

• Space equipment and systems
• Military equipment and hi-reliability systems
• Aircraft Controls
• Electromechanical and Solid State Relay Replacement
• Computer Systems
• Motor Driver
• H Bridge Driver

ISOCOM is a leading manufacturer of high-reliability optocouplers and optoelectronic components, specializing in products designed for space, military, and industrial applications. With a focus on radiation-hardened and hermetically sealed devices, ISOCOM provides components known for durability in extreme environments. To learn more about their wide range of products and industry expertise, you can visit their website at www.isocom.uk.com.