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Toshiba Semiconductor TLP292-4(LA-TP,E — Optoisolators

TLP292-4(LA-TP,E Optocoupler, 3750Vrms Isolation, 4-Channel

MPNTLP292-4(LA-TP,E
End of Life

Toshiba TLP292-4(LA-TP,E 4-channel transistor-output optocoupler, 3750Vrms isolation, 50%–600% CTR at 500µA, 80V output, -55°C to 125°C, 16-SOIC surface mount.

$1.76Ref. price · indicative, final on quote
Toshiba Semiconductor TLP292-4(LA-TP,E datasheet (PDF)
Packaging16-SOIC (0.179", 4.55mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLP292-4(LA-TP,E specifications
ParameterValue
Input typeAC, DC
Output typeTransistor
MountingSurface Mount
Voltage - isolation3750Vrms
Voltage - output80V
Voltage - forward (Vf)1.25V
Current - output (Channel)50mA
Current transfer ratio600% @ 500µA
Current - DC forward (If)50 mA
Operating temperature-55°C ~ 125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case16-SOIC (0.179\", 4.55mm Width)
Channels4
Vce saturation300mV
Rise (Fall time)2µs, 3µs
Turn on (Turn off time)3µs, 3µs

Product details

Four-channel isolation with AC/DC input flexibility

The Toshiba TLP292-4(LA-TP,E is a 4-channel transistor-output optocoupler in a surface-mount package, rated for 3750Vrms isolation. Its input accepts both AC and DC signals.

3750Vrms isolation and wide temperature range

Current transfer ratio and switching speed

With a minimum CTR of 50% and maximum of 600% at 500µA forward current, the TLP292-4 accommodates LED degradation over life and ensures logic-level compatibility with 5V systems. The Vce saturation of 300mV max keeps output dissipation low when driving CMOS or TTL inputs.

The supplier device package is 16-SO. The SOIC footprint is standard for automated assembly, and the narrow body saves board space compared to DIP optocouplers.

Frequently asked questions

Is TLP292-4(LA-TP,E) suitable for AC signal isolation?

Yes. The input type is specified as both AC and DC, so it can isolate AC line signals such as zero-crossing detection or AC mains monitoring. The LED is bidirectional, allowing it to be driven by an AC waveform without an external rectifier.

What is the current transfer ratio of TLP292-4?

The CTR range is 50% to 600% at a forward current of 500µA. This wide spread means the part can be used across varying LED drive currents while maintaining a guaranteed minimum output current for logic-level detection.

Is TLP292-4 compatible with 5V logic?

Yes. With a maximum output voltage of 80V and a saturation voltage of 300mV, the transistor output can directly drive 5V CMOS or TTL logic inputs when the collector is pulled up to 5V through a resistor. The CTR at 500µA ensures sufficient base drive to saturate the transistor at low forward current.