Optocouplers from ISOCOM Ltd

Total Ionization Dose for Gamma Radiated Optocouplers

This Total Dose Test Report details the work carried out on a sample of ISOCOM’s transistor optocouplers in accordance with the
ESA Contract covering Radiation Testing of Transistor family equivalent Optocouplers. The PDF file details the test parameters and conditions.

16Pin Quad Channel Flatpack Ceramic Optocoupler - CSM165 The high gain output stages feature open collector outputs providing both lower output saturation voltage and higher speed of operation than is possible with conventional photo-darlington type coupler.
The minimum CTR of 300% at an input current of 0.5 mA makes it ideal for use in low input current applications.
Also see : CSM160, CSM161, CSM162, CSM168, CSM169, CSM170


16 pin Dual Channel High Speed Hermetically Sealed OptocouplerThe 4N55 consists of two independent optocouplers in a hermetically sealed ceramic package. Each channel has a light emitting diode and an integrated photon detector. Separate connections for the photodiodes and output transistor collectors improve the speed up to 100 times that of a conventional phototransistor optocoupler by reducing the base collector capacitance.
The 4N55 is suitable for wide bandwidth analogue applications, as well as for interfacing TTL to LSTTL or CMOS. The availability of the base lead allows optimised gain/bandwidth adjustment in analog applications. The shallow depth of the IC photodiode provides better radiation immunity than conventional phototransistor couplers. Surface Mount Option Available.

6 Pin Single Channel Dual In Line Ceramic Optocoupler The CS200 and CS201 are optically coupled isolators each consisting of a Gallium Arsenide infra-red emitting diode and a Silicon phototransistor packaged in a hermetically sealed 6 pin, ceramic package offering high power dissipation and extended operating temperature range. Surface Mount Option Available.
Also see:

8 Pin Single Channel High Reliabilty Optocoupler The CS800 series are single channel devices hermetically sealed in 8 pin ceramic packages.
Ffor use in applications requiring matched or known CTR. At 16mA: 15% <= CTR <= 22%
The CS810 and CS811 are provided with the output transistor base not connected for greater immunity to noise and reduced ESD susceptibility.


16 pin Quad Channel Low Input Current Hermetically Sealed Cermic Optocoupler The 6N140A consists of four IR light emitting diodes, each optically coupled to a corresponding integrated high gain photon detector. The high gain output stage features an open collector output providing both lower output saturation voltage and higher speed operation than possible with a conventional photodarlington type coupler. The minimum CTR of 300% at an input current of 0.5mA makes it ideal for use in low input current applications such as MOS, CMOS and low power logic interfacing or data transmission systems. Surface Mount Option Available.

Miniature Small Form Ceramic Optocoupler The CSM1224 is a single channel device in a small outline package suitable for mounting in surface mount assemblies. it consists of a Gallium Arsenide infra-red emitting diode and a silicon phototransistor package in a hermetically sealed 6 pin ceramic package offering high power dissipation and extended operating temperature range.


6 pin plastic Dual In Line Optically Coupled Isolators The CNY17 Series are optically coupled isolators consisting of a Gallium Arsenide infrared emitting diode and an NPN silicon phototransistor mounted in a standard 6-pin dual-in-line package. Surface Mount Option Available.
All electrical parameters are 100% tested by manufacturing. Specifications are guaranteed to a cumulative 0.65% AQL.

Ceramic Optocoupler for Hybrid Applications The CH390 is a dual channel hybrid Optocoupler consists of a IR light emitting diode, optically coupled to a corresponding integrated high gain photon detector. The high gain output stage features an open collector output providing both lower output saturation voltage and higher speed of operation than is possible with conventional photo-Darlington type couplers.

Plastic 4 pin SOIC optocoupler with 3750V isolation Single Channel Plastic SOIC device suitable for use in vending machines, programmable controllers and copiers.

3750V Isolation
Subminiature Type
Opaque Type Mini-Flat Pack
Current Transfer Ratio (Min 50% @IF= 5mA, VCE= 5V)


Optically Coupled Transistor Isolator The IS824-1 is a dual channel device. Each channel consisting of a bi-directional input opto-isolator consists of two Gallium Arsenide infrared emitting diodes connected in inverse parallel coupled to a silicon NPN phototransistor in an 8 pin package. .

 5000V Isolation
 AC or Polarity Insensitive Inputs
 Compact Dual-in-line Package
 Built-in Reverse polarity Input Protection
 Current Transfer Ratio (Min 20% at I F = ± 1mA, V CE = 5V)
 UL Recognised, file No E64380

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