Alternatives to NXP BC557C
NXP BC557C and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for NXP BC557C
 BC557CNXP | BC556CDiotec Semiconductor | BC557BDiotec Semiconductor | |
|---|---|---|---|
| FFF Compatibility | Identical TO-92 package and Collector-Base-Emitter (C-B-E) pinout.Identical physical dimensions and through-hole mounting type.Meets or exceeds all electrical parameters including higher voltage handling capability. | Identical TO-92 package and Collector-Base-Emitter (C-B-E) pinout.Identical physical dimensions and through-hole mounting type.Lower hFE current gain bin (200-450) compared to the original C-bin (420-800). | |
 AI Summary | BC557C by NXP: Bipolar (BJT) Transistor PNP 45 V 100 mA 150MHz 500 mW Through Hole TO-92. | The BC556C is a direct upgrade from the same manufacturer and series. It offers a higher collector-emitter breakdown voltage of 65V (compared to 45V) while retaining the identical TO-92 footprint, pinout, and high hFE current gain of 420 to 800, making it an excellent drop-in replacement.
| The BC557B is a sibling variant within the same series that shares identical voltage ratings and physical characteristics. It belongs to a lower current gain group (hFE 200-450 vs 420-800), making it a viable alternative for applications that are not gain-critical.
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| Lifecycle Status | Obsolete | Active | Active |
| Market Availability | In stock | In stock | In stock |
| REACH | REACH | REACH | REACH |
| RoHS | RoHS | RoHS | RoHS |
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