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Fairchild MFP optocouplers occupy less board space than DIPs

Posted: 18 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:fairchild semiconductor? fairchild? optocoupler? hmha? hmhaa?

Housed in a half-pitch MFP with 1.27mm lead spacing, the HMHA281, HMHA2801, and HMHAA280 optocouplers are claimed to occupy 61 percent less board space compared to four-pin DIP models. This makes it suitable for telecommunication, power-conversion and industrial control applications.

The HHMA series consist of a single GaAs IR emitting diode (dc-input) that drives a silicon photoresistor. The HMHA281 and HMHA2801 has a current transfer ratio (CTR) of 50 percent to 600 percent and 80 percent to 600 percent, respectively, at a forward current of 5mA.

The HMHAA optocoupler consists of two GaAs diodes connected in inverse parallel (ac input). It has a CTR of 50 percent to 600 percent at a forward current of 5mA.

The devices are rated for operation at -55C to 100C. They have a an collector-emitter voltage of 80V and dissipates 60mW of power.

Available in tape-and-reel configuration, the HMHA devices are priced at 17 cents, while the HMHAA280 is priced at 29 cents in quantities of 10,000 units.





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