Electronic Products & Technology

Optocoupler improves safe circuit isolation

Stephen Law   

Electronics Optoelectronics optocouplers optoelectronic

WüRTH ELEKTRONIK Optoelectronic portfolio expands with optocouplers in all common packages and CTR (Current Transfer Ratio) values. WL-OCPT series of phototransistor optocouplers come in DIP-4, SOP-4 and LSOP-4 packages. WL-OCDA Darlington optocoupler series is available as DIP-4 and SOP-4. These different packages are also available in a range of lead frame varieties. The CTR values of the components—classified according to binning type—range from 20 to 15,000 percent. The DIN EN 60747-5-5 certified components can be used in the operating temperature range from -55 to +110°C. Galvanic isolation of low power control circuits from high power circuits is an important safety aspect in many applications. High quality silicone and polymer materials provide for 100% internal reflection and ensure a stable CTR over the entire temperature range.

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