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Product Detailed Parameters
- Description：TRANS PNP 45V 1.5A SOT-223-4
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：PNP
- Current - Collector (Ic) (Max)：1.5 A
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：40 @ 150mA, 2V
- Power - Max：1 W
- Frequency - Transition：-
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-261-4, TO-261AA
- Supplier Device Package：SOT-223-4
- Grade：-
- Qualification：-
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Overview
The BCP51 is a PNP general-purpose medium power amplifier and switch manufactured by ON Semiconductor. It operates with a collector-emitter voltage of -45 V and supports continuous collector currents up to 1.5 A. The device features a DC current gain (hFE) ranging from 25 to 250 depending on the test current, and exhibits a low collector-emitter saturation voltage of -0.5 V at 500 mA. Total device dissipation reaches 1.0 W, with an operating junction temperature range spanning from -55 °C to +150 °C.
Feature Summary
- Designed for general-purpose medium power amplifiers and switching applications requiring high collector currents.
- Features low collector-emitter saturation voltage suitable for efficient power handling.
- Manufactured using process 77 technology.
Applications
- General purpose medium power amplifiers
- Switching circuits requiring collector currents up to 1.0 A
Procurement Notes
Verify the specific ordering suffix against the official ON Semiconductor website to ensure compatibility with system requirements. Note that Fairchild part numbers containing underscores may have been updated to dashes in ON Semiconductor's product management systems. Confirm the exact package dimensions and thermal resistance values required for your FR-4 PCB mounting pad specifications before finalizing procurement.
Selection Notes
Select this component when designing circuits that require a PNP transistor capable of handling continuous currents up to 1.5 A with a breakdown voltage of 45 V. Ensure the application stays within the 1.0 W total device dissipation limit or implement appropriate heat sinking. Verify that the required hFE falls within the specified ranges for your target collector current conditions.
Part Context
This component belongs to the BCP series of PNP transistors produced by ON Semiconductor. It serves as a complementary counterpart to NPN devices such as the BCP54, BCP55, and BCP56. The device utilizes the SOT-223 surface-mount package, which provides a compact form factor for medium power applications while maintaining robust thermal performance through its collector-connected lead.
Replacement Considerations
Complementary NPN types include BCP54, BCP55, and BCP56. Verify pinout compatibility and electrical ratings when substituting with other PNP transistors from different manufacturers.
