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

Before replacing LTV-816S-TA1-C, you must check three main risks: 1) Electrical Stress: Ensure the replacement's VCEO is at least 80V. 2) Circuit Gain: Verify the CTR range matches your design's needs. 3) Physical Fit: Confirm the package dimensions and pinout match your PCB layout.

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

LITEON's LTV-816S-TA1-C is a general-purpose phototransistor optocoupler in a 4-pin SMD package, featuring 5000Vrms isolation, 80V VCEO, and a 200-400% CTR. Several functional alternatives and potential pin-compatible replacements are available, requiring careful review of...

AI replacement insight

Electrical riskmedium

Candidates may have different CTR or lower VCEO ratings. Always verify against circuit requirements.

Package risklow

Most alternatives are in similar 4-pin SMD packages, but footprint dimensions must be confirmed.

Sourcing risklow

The LTV-816/PC817 family is widely available from multiple manufacturers, ensuring good supply chain options.

Can it be replaced directly?

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

Best replacement path

The strongest candidate is ORPC-817SC-TP-F, which matches key electrical parameters including VCEO and CTR. However, pinout and footprint verification from the datasheet is essential.

Main risk

The primary risks are mismatched Current Transfer Ratio (CTR) and Collector-Emitter Voltage (VCEO), which can affect circuit performance and reliability. Package footprint must also be verified.

Recommended alternatives

A strong parametric match from Orient in a similar 4-pin SMD package with matching VCEO and CTR.

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Alternative comparison matrix

Feature / factor	LTV-816S-TA1-C	ORPC-817SC-TP-F	PC817X3CSP9F	TLP785(GB-TP6,F	Compatibility / risk
Package	4-pin SMD	4-pin SMD	-	-	4-SMD, Gull Wing — Package is different (Gull Wing leads). Footprint compatibility is unlikely without board changes.
Voltage	80 V	80 V	-	-	80 V — Collector-Emitter Voltage (VCEO) matches.
Current	200-400%	200-400%	-	-	100% - 600% — Current Transfer Ratio (CTR) range is much wider, which may affect circuit performance.
Temperature	-50°C to +110°C	-55 to +110 °C	-	-	-55°C to 110°C — Operating temperature range is comparable.

Application & sourcing insights

Questions & answers

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