Optocouplers — Frequently Asked Questions

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Optocouplers are useful where electrical isolation is needed between system and control circuits, in the prevention of ground loops, or in high voltage switching applications.

Frequently Asked Questions about Optocouplers

What kind of processing is available?

Are custom configurations available? If so, what are the costs and how long will it take?

Can the package styles be made smaller?

Can the potting material be changed?Do I have to run the photo diode at 10KV or 25KV?

Do both of the LEDs in the OC-100 family have to be working in order to get an output from the photo diode?

Can the LED current range be increased?

Is the Vf rating for the LED for the whole assembly, or for each LED?

What is the forward current (If) range through the OC-100 LED? What about current through the OC025?

What is the minimum gain of the OC-100 family devices?

What is the power gain of the OC-100 family devices?

Can the current gain be increased?

What is the current gain of the device?

Does the gain change with temperature?

Is it possible to get a 2W 10KV optocoupler in the OC-100 style package?

Is it okay to put two 25KV OC-250 optocouplers in series to get a 50KV optocoupler?

Is it okay to put two OC-250, or OC-100HGs in parallel?

Is the OC100HG optocoupler RoHS compliant?

What is the impact of ambient light on the optocoupler?

What is the thermal resistance of the module to air?

What is the turn-on time between the voltage applied to the photo diode and turn-on of the optocoupler?

What is the long term gain degradation?

Is there a SPICE model avaiable for the OC150HG?

What is the termination finish of the OC150G/HG, and do you have any recommendations for Peak-Reflow-Temperature and Time-at-Peak-Reflow Temperature?

 

About VMI...

VMI specializes in high voltage diodes, power supplies, optocouplers, multipliers and related assemblies. Our products are custom designed for military, industrial, medical, aerospace and other high-reliability applications operating at the leading edge of technology.

Established in 1980, VMI has years of experience in high voltage design and we are committed to quality and service. With a full staff of engineers and technicians, we are here to assist you throughout the production process, from design development to production manufacturing. We offer extensive testing, design verification, production support and custom design services.

VMI is ISO9001:2015 certified and all of our products are made and 100 percent tested at our facility in Visalia, California, USA. 

Voltage Multipliers, Inc.
8711 W. Roosevelt Ave.
Visalia, CA 93291 USA
(559) 651-1402
sales@voltagemultipliers.com

www.voltagemultipliers.com