
LITEON
A strong alternative from the same LTV-816S series with matching CTR, voltage, and package type.
LTV-816S-TP-D-CU is a popular 4-pin SMD phototransistor optocoupler from LITEON. Finding a replacement involves matching the package, pinout, and key electricals like the Current Transfer Ratio (CTR) bin.
Low if the CTR 'D' bin is matched. High if a different bin is used.
The LTV-816S series uses a standard SOP-4 package, but footprint verification is always advised.
The LTV-816 series is a widely available, multi-sourced product family.
Direct replacement for LTV-816S-TP-D-CU should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Use another LTV-816S series part with the same 'D' CTR bin, such as LTV-816S-TA1-D.
The primary risk is a mismatch in the Current Transfer Ratio (CTR), which can alter circuit behavior.

LITEON
A strong alternative from the same LTV-816S series with matching CTR, voltage, and package type.
| Feature / factor | LTV-816S-TP-D-CU | LTV-816S-TA1-D | LTV-816S-TA1-A | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMD | 4-pin SOP | SMD | 4-pin SOP / SMD — 4-pin SOP is the specific package type for the target's 'SMD' form factor.; LTV-816S-TA1-A: Same 4-pin SOP package family. | |
| Current | 300-600% (Rank D) | 300-600% @ 5mA | 80-160% (Rank A) | 300-600% @ 5mA / 80-160% (Rank A) — CTR matches target's Rank D.; LTV-816S-TA1-A: Significantly lower CTR requires circuit validation. | |
| Voltage | 80 V | 80 V | 80 V | 80 V — Collector-Emitter Voltage (VCEO) matches.; LTV-816S-TA1-A: Collector-Emitter Voltage (VCEO) matches. | |
| Temperature | Not specified | -50°C to +110°C | - | -50°C to +110°C — Standard operating range for this series. |
Verified drop-in options for LTV-816S-TP-D-CU 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.