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Product Detailed Parameters
- Description：TRANS PNP 45V 0.5A SOT-23-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Transistor Type：PNP
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：620mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 100mA, 1V
- Power - Max：300 mW
- Frequency - Transition：-
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The BCX17 is a PNP general-purpose amplifier and switching transistor manufactured by onsemi. It operates with a maximum collector current of 500 mA and a collector-emitter voltage rating of -45 V. The device features a collector-base voltage of -50 V and an emitter-base voltage limit of -5 V. Packaged in a surface-mount SOT-23 (TO-236AB) configuration, it supports junction temperatures up to +150 °C. Total device dissipation reaches 300 mW on an alumina substrate at 25 °C ambient temperature.
Feature Summary
- Designed for general-purpose amplification and switching applications
- Capable of handling continuous currents up to 0.5 A
- Utilizes process technology sourced from legacy Fairchild Semiconductor manufacturing lines
Applications
- General-purpose signal amplification circuits
- Electronic switching applications requiring moderate current handling
- Low-voltage logic interface stages
Procurement Notes
Verify the specific ordering suffix against the official onsemi database to ensure correct packing method and marking codes. Confirm that the component originates from authorized distribution channels to guarantee authenticity and traceability. Review the datasheet revision history for any updates regarding package dimensions or electrical characteristics prior to finalizing procurement specifications.
Selection Notes
Select this component when a PNP small-signal transistor is required for general-purpose tasks involving currents up to 500 mA. Ensure the application voltage does not exceed the -45 V collector-emitter rating. Consider the thermal resistance of 417 °C/W when designing heat dissipation strategies for surface-mount implementations without adequate copper plane support.
Part Context
This device was originally developed by Fairchild Semiconductor before being integrated into the onsemi portfolio. The part number format reflects standard industry nomenclature for general-purpose bipolar junction transistors. It belongs to the family of low-power silicon NPN/PNP transistors commonly used in consumer electronics and industrial control systems.
Replacement Considerations
Consult the official onsemi cross-reference documentation for verified substitute part numbers. Do not assume functional equivalence based solely on pinout compatibility. Verify that alternative components meet the same voltage, current, and thermal requirements specified in the BCX17 datasheet.
