What risks should I check before replacing LTV-816S-TA1-D?

Key risks include mismatched Current Transfer Ratio (CTR), which can affect loop gain or switching speed, and lower isolation voltage, which compromises safety. Always verify the package footprint, pinout, and critical electrical ratings from the datasheet before substitution.

LTV-816S-TA1-D Alternatives, Datasheet & Cross Reference | LITEON

The LTV-816S-TA1-D is a popular 4-pin SOP phototransistor optocoupler from LITEON, featuring 5kVrms isolation and a high 300-600% CTR. Finding a replacement requires matching these key electrical parameters and the SOP-4 package.

AI replacement insight

Electrical riskmedium

CTR mismatch with cross-vendor parts can affect circuit performance.

Package risklow

The SOP-4 package is standard, but taping options can vary.

Sourcing risklow

Multiple vendors produce similar optocouplers.

Can it be replaced directly?

Direct replacement for LTV-816S-TA1-D should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Use LTV-816S-TP-D-CU, a variant from the same series, after verifying the taping option.

Main risk

The main risk is selecting a part with an incompatible Current Transfer Ratio (CTR) or lower isolation voltage.

Recommended alternatives

A pin-compatible variant from the same LITEON series with identical electrical specs, differing only in the taping option.

View details

Alternative comparison matrix

Feature / factor	LTV-816S-TA1-D	LTV-816S-TP-D-CU	OR-1009-TP-G	PC357N4J000F	Compatibility / risk
Package	4-pin SOP	4-pin SOP (inferred)	4-pin SOP	4-Pin SOP	4-pin SOP (inferred) / 4-Pin SOP — Same series, package type matches.; OR-1009-TP-G: Package matches.; PC357N4J000F: Package matches.
Pinout	Pin-compatible	Pin-compatible	-	-	Pin-compatible — Same LTV-816S series.
Voltage	5000 Vrms	5000 Vrms	5000 Vrms	3750 Vrms	5000 Vrms / 3750 Vrms — Isolation voltage matches.; OR-1009-TP-G: Isolation voltage matches.; PC357N4J000F: Isolation voltage is lower.
Ctr	300-600% (Rank D)	300-600% (Rank D)	200-400%	Equivalent range	300-600% (Rank D) / 200-400% / Equivalent range — CTR rank matches.; OR-1009-TP-G: CTR range is lower.; PC357N4J000F: CTR appears compatible.
Taping	TA1	TP	-	-	TP — Taping option differs.
Temperature	-50°C to 110°C	-	-55°C to 125°C	-30°C to +100°C	-55°C to 125°C / -30°C to +100°C — Operating temperature range is wider.; PC357N4J000F: Operating temperature range is narrower.

Application & sourcing insights

Questions & answers

Verified drop-in options for LTV-816S-TA1-D 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.