PC817X3CSP9F
SHARP
Needs validationmedium risk
The SMD equivalent from the same manufacturer, SHARP, with matching key electrical parameters.
Best Alternatives to PC817X3NSZ9F
PC817X3NSZ9F is a popular 4-pin DIP optocoupler. While no direct drop-in replacements have been identified, several functional alternatives in surface-mount (SMD) packages are available, requiring a PCB layout change.
AI replacement insight
Package riskhigh
All alternatives are SMD and require a board redesign.
Electrical risklow
Several candidates match key electricals, but CTR and VCEO must be verified for the specific application.
Can it be replaced directly?
Direct replacement for PC817X3NSZ9F should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
For board revisions, use an SMD equivalent like PC817X3CSP9F. For existing DIP layouts, sourcing the original part is recommended.
Main risk
The primary risk is the mechanical incompatibility between the target's through-hole DIP package and the candidates' surface-mount packages.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | PC817X3NSZ9F | PC817X3CSP9F | TLP785(GB-TP6,F | LTV-816S-TA1-C | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4-DIP | 4-SMD | - | - | 4-pin SMD — Requires board redesign. |
| Voltage | 80 V | 80 V | - | - | 80 V — Collector-Emitter Voltage (VCEO) matches. |
| Current | 100% - 200% | 100% - 200% | - | - | 200% - 400% — Higher CTR may affect circuit gain. |
| Temperature | -30°C to +100°C | -30°C to +100°C | - | - | -50°C to +110°C — Wider operating temperature range. |
Application & sourcing insights
Questions & answers
Verified drop-in options for PC817X3NSZ9F 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.