BCX17,215
Nexperia USA Inc.
Needs validationhigh risk
BCX17,215 may replace S8550 only with relaxed power and speed requirements.
Best Alternatives to S8550
S8550 is a PNP SOT-23 BJT. BCW68G is the strongest listed candidate, but pinout must be confirmed.
AI replacement insight
Electrical riskmedium
check VCE(sat), hFE, fT, and power
Package riskmedium
SOT-23 matches but pinout is missing
Firmware risklow
discrete BJT has no firmware
Sourcing riskmedium
maker evidence differs for BCW68G
Can it be replaced directly?
Direct replacement for S8550 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Review BCW68G first; use BCX17,215 only with derating.
Main risk
Unverified pinout and BJT rating differences.
Recommended alternatives
1Alternative comparison matrix
| Feature / factor | S8550 | BCW68G | BCX17,215 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT-23 | SOT-23 | SOT-23 — same package name; BCX17,215: same package name | |
| Pinout | 3-pin PNP BJT | 3-pin PNP BJT | 3-pin PNP BJT | 3-pin PNP BJT — pin functions missing; BCX17,215: pin functions missing | |
| Voltage | 25V VCEO | 45V VCEO | 45V VCEO | 45V VCEO — higher rating; BCX17,215: higher rating | |
| Current | 0.5A IC | 0.8A IC | 0.5A IC | 0.8A IC / 0.5A IC — higher rating; BCX17,215: same max current | |
| Power | 300mW | 330mW | 250mW | 330mW / 250mW — slightly higher; BCX17,215: derating needed | |
| Application | 150MHz, hFE 120-400 | - | 80MHz, hFE min 100 | 80MHz, hFE min 100 — small-signal limits differ |
Application & sourcing insights
Questions & answers
Verified drop-in options for S8550 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.