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Toshiba TOSHIBA Photocoupler GaAs Ired & Photo-Transistor TLP120 Data Sheet

Summary

The TLP120 is a high-performance mini flat optical coupler featuring a photo transistor coupled with two gallium arsenide IR LEDs. Ideal for surface mount assembly and direct AC input operation, it provides reliable signal isolation up to 3750Vrms. This comprehensive manual details the product's maximum ratings, electrical characteristics (including saturation and off-state data), switching capability, and operational guidelines. It is engineered for general electronics applications, including industrial control systems, consumer appliances, and commercial equipment.

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Page 1 Text Content

TLP120

TOSHIBA Photocoupler Ga As Ired & Photo-Transistor

TLP120

Programmable Controllers Unit in mm AC / DC−Input Module Telecommunication

The TOSHIBA mini flat coupler TLP120 is a small outline coupler, suitable for surface mount assembly. TLP120 consists of a photo transistor, optically coupled to two gallium arsenide infrared emitting diode connected inverse parallel, and can operate directly by AC input current.

Collector−emitter voltage: 80 V (min.) Current transfer ratio: 50% (min.)

Rank GB: 100% (min.)

Isolation voltage: 3750Vrms (min.) UL recognized: UL1577, file no. E67349

TOSHIBA 11−4C1 Weight: 0.09 g

Pin Configurations (top view)

1： Anode Cathode 3： Cathode Anode 4： Emitter 6： Collector

Page Summary Contents For Toshiba TOSHIBA Photocoupler GaAs Ired & Photo-Transistor TLP120 Data Sheet

Page 1 TLP120 TOSHIBA Photocoupler Ga As Ired & Photo-Transistor TLP120 Programmable Controllers Unit in mm AC / DC−Input Module Telecommunication The TOSHIBA mini flat coupler TLP120 is a small outline ...
Page 2 TLP120 Maximum Ratings (Ta = 25°C) et ec to Characteristic Symbol Rating Unit Forward current IF(RMS) 50 m A Forward current derating ∆IF / °C 0.7 (Ta ≥ 53°C) m A / °C Pulse forward current IFP 1 (10...
Page 3 TLP120 Individual Electrical Characteristics (Ta = 25°C) et ec to LE Characteristic Symbol Test Condition Min. Typ. Max. Unit Forward voltage VF IF = ±10 m A 1.0 1.15 1.3 V Capacitance CT V = 0, f = 1...
Page 4 TLP120 Switching Characteristics (Ta = 25°C) Characteristic Symbol Test Condition Min. Typ. Max. Unit Rise time tr — 2 — Fall time tf — 3 — VCC = 10 V, IC = 2 m A RL = 100Ω Turnon time ton — 3 — Turn...
Page 5 TLP120 Fo rw ar vo lta ge te pe ra tu re llo ab le fo rw ar cu rre nt oe ffi ci en /Δ a（ ul se fo rw ar cu rre nt IF – Ta PC – Ta Ambient temperature Ta (°C) Ambient temperature Ta (°C) Pu ls fo rw ar...
Page 6 TLP120 ur re nt tr an sf er ra tio ol le ct or ur re nt (m A) ol le ct or ur re nt (m A) IC – VCE IC - VCE Ta = 25°C Ta = 25°C IF = 50m A PC(MAX) IF = 5m A Collecor-emitter voltage VCE (V) Collector-e...
Page 7 TLP120 Sw itc hi ng ti µs ol le ct or -e itt er at ur at io vo lta ge E( sa t) V) VCE(sat) – Ta IC - Ta IF = 5m A VCE = 5V IC = 1m A IF = 25m A Ambient temperature Ta (°C) ol le ct or ur re nt (m A) S...
Page 8 TLP120 000707EBCRESTRICTIONS ON PRODUCT USE TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fai...

Manual Details

Brand Toshiba
Pages 8
File Size 177.76 KB
Published May 29, 2026
39 views

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Frequently Asked Questions

What precautions must be taken when handling the TLP120?

Be aware that Gallium arsenide dust and fumes are toxic; do not break, cut, or pulverize the product.

What is the minimum rated collector-emitter voltage (V_CE)?

The minimum rated collector-emitter voltage is 80 V.

How does the device function electrically?

It operates as a two-terminal device by shorting pins 1 to 3, and pins 4 to 6.

What are the recommended operating temperature limits for use?

The product's recommended operating temperature range is from -25°C to 85°C.

Is this device suitable for life-critical safety applications?

No, it is not intended or warranted for equipment where failure could cause loss of human life, such as medical instruments.

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