Four-pin optocouplers

sfh619A/612A/655A photodarlingtons are housed in four-pin dual-inline packages. The sfh619A features a breakdown voltage of 300V, which makes it suitable for electrically noisy environments, such as the manufacturing floor and motor control applications. It has a 1000% gain in current transfer ratio and a low current turn-on of 1 mA. The sfh612A and 655A have breakdown voltages of 70V and offer ctrs of 200% and 600%, repectively. All three devices have isolation voltages of 5300VRMS, reverse voltage of 6V, and forward current of 60 mA. A four-pin phototransistor--the sfh614A--has a breakdown voltage of 300V, but has a ctr of 50%, so it can operate at higher speeds than the photodarlingtons. Pricing ranges from $0.35 to $0.49 each in quantities of 10,000.

Siemens Microelectronics Inc.

Cupertino, CA