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Product Detailed Parameters
- Description：TRANS SOT323
- Series：-
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Power - Max：-
- Frequency - Transition：-
- Operating Temperature：-
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SOT-323
- Grade：-
- Qualification：-
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Overview
The Nexperia BC857BW/ZLF is a PNP general-purpose transistor housed in the SOT-323 (SC-70) surface-mount package. It features a maximum collector-emitter voltage of -45 V and a continuous collector current of -100 mA. The device offers a DC current gain range of 220 to 475, with a transition frequency of 100 MHz and power dissipation of 200 mW. The ZLF suffix indicates lead-free construction compliant with RoHS standards.
Feature Summary
- PNP bipolar junction transistor configured for general-purpose switching and amplification tasks
- Ultra-small SOT-323 plastic package designed for efficient board space utilization
- Lead-free manufacturing process ensuring compliance with environmental directives
Applications
- General-purpose small signal DC applications
- Low and medium frequency AC applications
- Mobile device circuitry
Procurement Notes
Verify the specific ordering code against official Nexperia documentation to confirm the ZLF suffix denotes lead-free status. Ensure the SOT-323 package variant matches the design requirements. Cross-reference the part number with authorized distributors to validate authenticity and current availability status before finalizing procurement decisions.
Selection Notes
Select this component for designs requiring a compact PNP transistor with moderate current handling capabilities. The SOT-323 package is suitable for space-constrained layouts. Verify that the -45 V voltage rating and -100 mA current limits align with the circuit's operational parameters. Consider the hFE binning if precise gain control is necessary for the application.
Part Context
This component belongs to the Nexperia BC857W series of PNP transistors. It serves as the PNP complement to the BC847W NPN transistor family. The series includes variants such as BC856W, BC857AW, and BC857CW, all sharing the same SOT-323 footprint but differing in gain characteristics and specific electrical tolerances.
Replacement Considerations
Officially documented substitutes include the BC857AW,135 and BC857B,235. Verify pinout compatibility and electrical parameter alignment when substituting these parts. Ensure the replacement package type matches the existing PCB layout constraints.
