Is there a pin-compatible replacement for CYPC817(B-TP2)?

Sharp's PC817X4CSP9F may be pin-compatible as it belongs to the same industry-standard family, but its package and pinout must be verified against your board. Electrical parameters like CTR and temperature also differ.

What risks should I check before replacing CYPC817(B-TP2)?

Key risks are: 1) Package mismatch, as parts like TLP383 use an SO6L package. 2) Current Transfer Ratio (CTR) mismatch, which can affect feedback loop stability. 3) Reduced operating temperature range.

CYPC817(B-TP2) Alternatives, Datasheet & Cross Reference | OCIC

The CYPC817(B-TP2) is a general-purpose 4-pin phototransistor optocoupler with 5kV isolation. Alternatives exist from major brands like Sharp and Toshiba, but require careful review of package, CTR, and temperature range.

AI replacement insight

Package riskhigh

Many alternatives use different packages (e.g., SO6L) that are not drop-in compatible.

Electrical riskmedium

CTR and operating temperature can differ, requiring circuit validation.

Sourcing risklow

This is a common component type with many manufacturers.

Can it be replaced directly?

No verified direct drop-in replacement has been identified. All candidates require engineering review due to differences in package, CTR, or operating temperature.

Best replacement path

For new designs, Toshiba TLP383/TLP385 offer superior performance. For existing boards, Sharp PC817X4CSP9F is a potential cross-family alternative but requires careful validation of CTR and temperature.

Main risk

The primary risks are package incompatibility and mismatched Current Transfer Ratio (CTR), which can lead to assembly issues or circuit malfunction.

Recommended alternatives

A strong electrical alternative with a wider temperature range, but requires a different PCB layout for its SO6L package.

View details

Alternative comparison matrix

Feature / factor	CYPC817(B-TP2)	TLP383(GR-TPL,E	TLP385(GR-TPL,E	PC817X4CSP9F	Compatibility / risk
Package	4-pin	4-pin SO6L	4-pin SO6L	4-Pin	4-pin SO6L / 4-Pin — Candidate package is not a drop-in replacement for a standard 4-pin DIP/SOP.; TLP385(GR-TPL,E: Candidate package is not a drop-in replacement.; PC817X4CSP9F: Package is likely compatible (DIP/SMD) but requires verification.
Voltage	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms — Isolation voltage matches.; TLP385(GR-TPL,E: Isolation voltage matches.; PC817X4CSP9F: Isolation voltage matches.
Ctr	130-260% (B Rank)	100% - 300% (GB Rank)	Min 50% (GR Rank)	Rank D (e.g. 300-600%)	100% - 300% (GB Rank) / Min 50% (GR Rank) / Rank D (e.g. 300-600%) — CTR rank is a close match to target's B-rank.; TLP385(GR-TPL,E: GR rank is likely a good match but should be confirmed from datasheet.; PC817X4CSP9F: CTR rank differs significantly, impacting gain.
Temperature	-55°C to +110°C	-55°C to 125°C	-55°C to 110°C	-30°C to +100°C	-55°C to 125°C / -55°C to 110°C / -30°C to +100°C — Wider operating temperature range.; TLP385(GR-TPL,E: Operating temperature range matches.; PC817X4CSP9F: Narrower operating temperature range.

Application & sourcing insights

Questions & answers

The best alternative depends on application priority. For similar electricals, Toshiba's TLP383 is strong but needs a board layout change. For a similar package, Sharp's PC817 series is an option but requires validating CTR and temperature.