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Photorelays for smart meters feature low input power

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By Rich Pell


The TLP223GA and TLP223J feature an OFF-state output terminal voltage rating of 400V and 600V, respectively. They both feature low input power, improved switching characteristics, and are housed in a DIP4 package.

The devices have a high luminous efficiency LED developed by Toshiba and have a maximum trigger LED current of 2mA. This is about 33% lower than current products, says the company, and allows low input power.

Faster operation is secured by lower switching characteristics (turn-on time, turn-off time): 50%[2] for TLP223GA and 75%[2] for TLP223J.

Their maximum operating temperature ratings have been extended from 85°C to 110°C, suiting them for use in equipment installed outdoors, such as smart meters. A maximum isolation voltage of 5000Vrms allows use in equipment requiring high isolation performance.

Applications include:

  • Smart meters
  • Security systems (PIR (Passive Infrared Ray) etc.)
  • Industrial equipment (programmable logic controllers, I/O interface, various sensor control, etc.)
  • Building automation systems
  • Replacement of mechanical relays

The TLP223GA and TLP223J are available now.

Toshiba Electronic Devices & Storage Corporation


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