CYTLP184(GB-TP)
OCIC
Needs validationmedium risk
Strong parametric match in the same package, but has lower power dissipation requiring verification.
Best Alternatives to HTLP185GB-S
Finding a substitute for the HTLP185GB-S SOP-4 optocoupler requires matching its 3750Vrms isolation, 80V VCEO, and wide 100-600% CTR. Alternatives exist but may have different power ratings or CTR ranges, requiring careful review.
AI replacement insight
Electrical riskmedium
Substitutes may have different CTR ranges or lower power/voltage ratings.
Package risklow
The SOP-4 package is very common, but pinout must always be verified.
Firmware risklow
Not applicable for this type of component.
Can it be replaced directly?
Direct replacement for HTLP185GB-S should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
OCIC's CYTLP184(GB-TP) offers the closest parametric match but requires verification of its lower power dissipation (150mW vs 200mW).
Main risk
The primary risk is finding a part that matches both the wide 100-600% CTR and the 200mW power rating. Many alternatives have narrower CTR bins or lower power handling.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | HTLP185GB-S | CYTLP184(GB-TP) | PS2501-S | PC357C | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOP-4 | SOP-4 | SOP-4 | SOP-4 | SOP-4 — Package matches.; PS2501-S: Package matches.; PC357C: Package matches. |
| Voltage | 80 V | 80 V | 5000 Vrms | 35 V | 80 V / 5000 Vrms / 35 V — Collector-Emitter Voltage (VCEO) matches.; PS2501-S: Isolation voltage is higher.; PC357C: VCEO is significantly lower. |
| Ctr | 100-600% | 100-600% | 80-600% | 200-400% | 100-600% / 80-600% / 200-400% — Current Transfer Ratio (CTR) range matches.; PS2501-S: CTR range starts lower.; PC357C: CTR range is narrower but within target's range. |
| Power | 200 mW | 150 mW | - | - | 150 mW — Candidate has lower power dissipation. |
| Temperature | -55°C to +110°C | -55°C to 110°C | -55°C to +100°C | - | -55°C to 110°C / -55°C to +100°C — Operating temperature range matches.; PS2501-S: Max operating temperature is lower. |
Application & sourcing insights
Questions & answers
Verified drop-in options for HTLP185GB-S 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.