Photocoupler (phototransistor output)

  • Related Reference Design(1)


Feature 2.3mm low-profile package / DC input
Application Scope Communication interface / PLC / Power supply
Function General-purpose
Number of Circuits 1
Input type DC
RoHS Compatible Product(s) (#) Available
Safety Standard Approved : UL 1577 / cUL (CSA Component Acceptance Service No. 5A) / EN 60747-5-5 / EN 60065 / EN 60950-1 / GB 4943.1-2022

*Download Online Certification of Safety Standard(UL 1577)
*Download Online Certification of Safety Standard(cUL)

Package Information

Toshiba Package Name SO4
Package Image SO4
Pins 4
Mounting Surface Mount
Package Dimensions View
Land pattern dimensions View
CAD data
(Symbol, Footprint and 3D model)
Download from UltraLibrarian<sup>®</sup> in your desired CAD format (Note) Download from UltraLibrarian® in your desired CAD format (Note)

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Absolute Maximum Ratings

Characteristics Symbol Rating Unit
Collector-emitter voltage VCEO 80 V
Collector Current IC 0.05 A
Forward Current IF 0.05 A
Operating Temperature Topr -55 to 110

Electrical Characteristics

Characteristics Symbol Condition Value Unit
Collector Emitter Saturation Voltage (Max) VCE(sat) - 0.3 V
Isolation voltage BVs
@1minute (Min)
BVS t=60sec 3750 Vrms
Current Transfer Ratio (Max) CTR IF=5mA
600 %
Current Transfer Ratio (Min) CTR IF=5mA
50 %
Purchase and Sample
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(Note) LTspice ® is a trademark and simulation software of ADI (Analog Devices, Inc.).

Orderable part number

Orderable part number
MOQ(pcs) Reliability
RoHS Current Transfer Ratio
TLP291(BL-TP,SE 2500 Yes BL (200%-600%) -
TLP291(BLL-TP,SE 2500 Yes BLL(200%-400%) -
TLP291(GB-TP,SE 2500 Yes GB(100%-600%) -
TLP291(GR-TP,SE 2500 Yes GR(100%-300%) -
TLP291(GRH-TP,SE 2500 Yes GRH(150%-300%) -
TLP291(GRL-TP,SE 2500 Yes GRL(100%-200%) -
TLP291(TP,SE 2500 Yes - -
TLP291(V4-TP,SE 2500 Yes - Yes
TLP291(V4B-TP,SE 2500 Yes BLL(200%-400%) Yes
TLP291(V4BLTP,SE 2500 Yes BL (200%-600%) Yes
TLP291(V4GBTP,SE 2500 Yes GR(100%-300%) Yes
TLP291(V4GLTP,SE 2500 Yes GRL(100%-200%) Yes
TLP291(V4GRTP,SE 2500 Yes GR(100%-300%) Yes
TLP291(V4Y-TP,SE 2500 Yes Y(50%-150%) Yes
TLP291(V4YHTP,SE 2500 Yes YH(75%-150%) Yes
TLP291(Y-TP,SE 2500 Yes Y(50%-150%) -
TLP291(YH-TP,SE 2500 Yes YH(75%-150%) -

Technical inquiry

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Frequently Asked Questions



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