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| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
5 pcs
|
5 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Automotive Grade | |
| Collector-Base Voltage (VCBO) | |
| Conflict Minerals | |
| Current | |
| DC Current Gain (hFE) (Min) @ Ic, Vce | |
| Emitter-Base Voltage (VEBO) | |
| Frequency | |
| HS Code | |
| Halogen Free | |
| Industrial Grade | |
| Lead Spacing | |
| Lead Style | |
| Medical Grade | |
| Military Grade | |
| Mounting Type | |
| Operating Junction Temperature (Tj) | |
| Operating Temperature | |
| Package Type | |
| Peak Collector Current (ICM) | |
| Power | |
| SVHC Present | |
| Storage Temperature | |
| Supplier Device Package | |
| Transistor Type | |
| Vce Saturation (Max) @ Ib, Ic | |
| Voltage |
The BC557B is a PNP bipolar junction transistor manufactured by Diotec Semiconductor. It is part of the general-purpose BC557 series, designed for signal processing, switching, and amplification applications.
This transistor offers a collector-emitter breakdown voltage (VCEO) of -45 V and a continuous collector current (IC) of -100 mA. The DC current gain (hFE) ranges from 200 to 450 at Vce=-5V and Ic=-2mA, ensuring reliable amplification. The transition frequency (fT) is 150 MHz, suitable for low-frequency signal processing. Maximum power dissipation is 500 mW, with an operating junction temperature range of -55°C to 150°C.
The BC557B is mounted in a through-hole TO-92 package (TO-226-3, TO-92-3), making it suitable for breadboard prototyping and PCB assembly. It is compliant with RoHS3, REACH, and Conflict Minerals regulations. Complementary NPN transistors include the BC546, BC547, BC548, and BC549 series.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.11 | $0.11 |
| 10+ | $0.08 | $0.08 |
| 100+ | $0.07 | $0.07 |
| 500+ | $0.05 | $0.05 |
| 1,000+ | $0.05 | $0.05 |
| 4,000+ | $0.04 | $0.04 |
| 8,000+ | $0.02 | $0.02 |
| 24,000+ | $0.02 | $0.02 |
| 48,000+ | $0.02 | $0.02 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The VCEO is -45 V.
It is housed in a TO-92 through-hole package (TO-226-3, TO-92-3).
-55°C to 150°C (junction temperature).
Yes, it is RoHS3 compliant.
The hFE ranges from 200 to 450 at Vce=-5V and Ic=-2mA.
The transition frequency (fT) is 150 MHz.
Recommended complementary NPN transistors are the BC546, BC547, BC548, and BC549.