General
The Toshiba TLP291-4 consists of phototransistors optically coupled to gallium arsenide infrared emitting diodes.
The TLP291-4 Photocoupler is housed in the very small and thin SO16 package.
Since the TLP291-4 is guaranteed over a wide operating temperature range (Ta = -55 to 110), it is suitable for high-density surface mount applications such as programmable controllers.

Features
(1) Collector-emitter voltage: 80 V (min)
(2) Current transfer ratio: 50% (min)
   GB Rank: 100% (min)
(3) Isolation voltage: 2500 Vrms (min)
(4) Operating temperature: -55 to 110
(5) Safety standards
   UL-approved UL1577 File No.E67349
   cUL-approved CSA Component Acceptance Service No.5A File No.E67349
   VDE approved EN60747-5-2 Certificate No. 40009347 (Note)
  
Applications
• Programmable Logic Controllers (PLCs)
• Switching Power Supplies
• Simplex/Multiplex Data Transmission