Alternatives to NXP BC557C
NXP BC557C and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 BC557CNXP | BC556CDiotec Semiconductor | BC557BTFonsemi | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Shares the identical TO-92 package and standard CBE (Collector-Base-Emitter) pin configuration.Housed in the identical TO-92 through-hole package with same dimensions.Meets or exceeds all electrical ratings, providing a higher voltage ceiling while preserving the exact high-gain characteristics. | Uses the exact same CBE pinout layout in a TO-92 package.Standard TO-92 through-hole package matching the original physical outline.The DC current gain hFE is lower (B-grade, 200-450) compared to the original high gain (C-grade, 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 high-voltage drop-in sibling from the same manufacturer. It is currently active, has the same high hFE gain classification, and offers an improved 65V collector-emitter voltage rating with zero required design changes.
| The BC557BTF is an active general-purpose replacement from onsemi. It offers identical voltage and current ratings but uses the slightly lower 'B' gain classification, which is acceptable in most non-critical biasing or switching applications.
| |
| Lifecycle Status | Obsolete | Unknown | Unknown | |
| Market Availability | In stock | Unknown | Unknown | |
| REACH | REACH | Unknown | Unknown | |
| RoHS | RoHS | Unknown | Unknown | |
| Description | Bipolar (BJT) Transistor PNP 45 V 100 mA 150MHz 500 mW Through Hole TO-92 | The BC556C is a high-voltage drop-in sibling from the same manufacturer. It is currently active, has the same high hFE gain classification, | The BC557BTF is an active general-purpose replacement from onsemi. It offers identical voltage and current ratings but uses the slightly low | |
| Manufacturer | NXP | Diotec Semiconductor | onsemi | |
| Type | Transistors | Component | Component | |
| Datasheet | Open | N/A | N/A | |
| Lead Time | 7 weeks | Unknown | Unknown | |
| Country of Origin | CN | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.21.0095 | - | - | |
| Moisture Sensitivity Level | Not Applicable | - | - | |
| Power - Max | 500 mW | - | - | |
| Mounting Type | Through Hole | - | - | |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) Formed Leads | - | - | |
| Transistor Type | PNP | - | - | |
| Operating Temperature | -55°C ~ 150°C (TJ) | - | - | |
| Frequency - Transition | 150MHz | - | - | |
| Supplier Device Package | TO-92 | - | - | |
| Vce Saturation (Max) @ Ib, Ic | 650mV @ 5mA, 100mA | - | - |
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Frequently asked questions
Yes. The NXP BC557C is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the NXP BC557C are the BC556C (Diotec Semiconductor) and the BC557BTF (onsemi), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the BC557C are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The BC557C (NXP) is a part in the Transistors category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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