Toshiba TLP191B User's Guide and Manual
Summary
This high-performance optocoupler is an ideal component for electrically isolating signals in MOS FET gate drive circuits. Utilizing a GaAℓAs LED coupled to a photo-diode array, it provides robust switching capability and an impressive isolation voltage of up to 2500 Vrms. The technical manual covers comprehensive electrical characteristics, including operational guidelines, temperature ranges, transient data, and specific safety instructions. This component is essential for electronics designers building reliable systems in industrial control, measuring equipment, and general electronic applications requiring precise signal separation.
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TLP191B
TOSHIBA Photocoupler Ga AℓAs Ired & Photo-Diode Array TENTATIVE
TLP191B
Telecommunication
Unit in mm
Programmable Controllers Mos Gate Driver MOS FET Gate Driver
The TOSHIBA mini flat coupler TLP191B is a small outline coupler, suitable for surface mount assembly. The TLP191B consists of a Ga AℓAs light emitting diode, optically coupled to a series connected photo diode array with shunt resistor which is suitable for MOS FET gate drive.
Open voltage: 7.0V(min.) Short current: 24.0 µA (min.) Isolation voltage: 2500 Vrms (min.) UL recognized: UL1577,file no.E67349
Maximum Ratings (Ta = 25°C)
TOSHIBA 11−4C1
Characteristic Symbol Rating Unit
Weight: 0.09 g
Forward current IF 50 m A Forward current derating (Ta ≥ 25°C) ∆IF / °C 0.5 m A / °C
Pin Configuration(top view)
LED Pulse forward current
IFP 1 A
(100µs pulse, 100 pps) Reverse voltage VR 3 V Junction temperature Tj 125 °C Forward current IFD 50 µA Reverse voltage VRD 10 V Detector Junction temperature Tj 125 °C
1 . Anode Storage temperature range Tstg 55~125 °C 3 . Cathode 4 . Cathode
Operating temperature range Topr 40~80 °C
6 . Anode
Lead soldering temperature (10s) Tsol 260 °C Isolation voltage
BVS 2500 Vrms
(AC, 1 min., R.H. ≤ 60%) (Note)
(Note) Device considered a two terminal device: Pins 1 and 3 shorted together and pins 4 and 6 shorted together.
Page Summary Contents For Toshiba TLP191B User's Guide and Manual
Manual Details
| Brand | Toshiba |
|---|---|
| Pages | 4 |
| File Size | 148.42 KB |
| Published | May 28, 2026 |
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Frequently Asked Questions
What kind of devices is the TLP191B coupler suitable for?
It is a small outline coupler suitable for surface mount assembly and designed for MOS FET gate drive.
What is the guaranteed minimum isolation voltage (BV)?
The isolation voltage (BV) is specified as 2500 Vrms, recognized under UL1577.
What are the safe operating temperature ranges?
The recommended operating temperature range is from -25°C to 85°C. The storage range is -55°C to 125°C.
How can I dispose of this product safely?
Do not use it with other industrial waste or domestic garbage; follow appropriate disposal regulations due to the presence of GaAs.