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Best Alternatives to TLP181GB-S(UMW)

Package: SOP-4UMWPhotovoltaic OutputIsolation Voltage: 3750 VrmsCollector-Emitter Voltage: 80 VCurrent Transfer Ratio (Min): 100 %Forward Current: 50 mAOperating Temperature: -55 °C to 110 °C

Finding a substitute for the TLP181GB-S(UMW) involves matching its SOP-4 package, 3750Vrms isolation, and 80V VCEO. Several functional alternatives exist, requiring review of CTR and temperature range.

AI replacement insight

Electrical risklow

Several candidates have matching voltage and current ratings.

Package risklow

All viable candidates use the same standard SOP-4 package.

Sourcing risklow

Alternatives are available from multiple manufacturers.

Can it be replaced directly?

Direct replacement for TLP181GB-S(UMW) should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

OR-357B-S-TP-G from Orient is a strong parametric match. TLP185GB-S(UMW) is from the same manufacturer but has a lower minimum CTR.

Main risk

The main risks are ensuring the candidate's Current Transfer Ratio (CTR) and operating temperature range meet the application's requirements.

Recommended alternatives

3
OR-357B-S-TP-G package
OR-357B-S-TP-G

Orient

Needs validationlow risk

Strong cross-vendor alternative with matching key parameters and a wider temperature range.

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Alternative comparison matrix

Feature / factorTLP181GB-S(UMW)OR-357B-S-TP-GTLP185GB-S(UMW)OR-3H7C-TP-GCompatibility / risk
PackageSOP-4SOP-4SOP-4SOP-4SOP-4 — Same package and pin count.; TLP185GB-S(UMW): Same package and pin count.; OR-3H7C-TP-G: Same package and pin count.
Voltage80 V80 V80 V80 V80 V — Collector-Emitter Voltage (VCEO) matches.; TLP185GB-S(UMW): Collector-Emitter Voltage (VCEO) matches.; OR-3H7C-TP-G: Collector-Emitter Voltage (VCEO) matches.
Current100% min (GB)130% - 260%50% - 600%200% - 400%130% - 260% / 50% - 600% / 200% - 400% — CTR range is compatible.; TLP185GB-S(UMW): Minimum CTR is lower.; OR-3H7C-TP-G: CTR range is within target's range.
Temperature-55°C to 110°C-55°C to 125°C-55°C to 110°C-30°C to 110°C-55°C to 125°C / -55°C to 110°C / -30°C to 110°C — Operating temperature range is wider.; TLP185GB-S(UMW): Operating temperature range matches.; OR-3H7C-TP-G: Lower operating temp limit is higher.

Application & sourcing insights

Questions & answers

Verified drop-in options for TLP181GB-S(UMW) are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.