BC857BW_R1_00001

Overview

The BC857BW_R1_00001 is a PNP general-purpose bipolar junction transistor manufactured by Panjit International Inc. It utilizes silicon technology and is housed in an SOT-23-3 surface-mount package. The device features a collector-emitter voltage (VCEO) of 45 V, a collector-base voltage (VCBO) of 50 V, and an emitter-base voltage (VEBO) of 5 V. It supports a maximum DC collector current of 100 mA with a peak rating of 200 mA. Key electrical parameters include a power dissipation of 330 mW, a transition frequency (fT) of 200 MHz, and a saturation voltage of 650 mV. The component operates within a temperature range of -55°C to +150°C.

Feature Summary

• PNP polarity configuration for single-transistor applications
• High DC current gain ranging from 220 to 475
• Silicon-based construction for reliable switching performance
• SOT-23-3 surface-mount packaging for compact circuit integration

Applications

• General-purpose signal amplification
• Switching circuits requiring low-power control
• Audio pre-amplifier stages
• Logic level translation interfaces

Procurement Notes

Verify the specific suffix 'BW' against official Panjit documentation to confirm the exact hFE binning requirements, as this designation dictates the minimum and maximum DC current gain thresholds. Ensure that the SOT-23-3 footprint matches the target PCB layout specifications. Confirm RoHS compliance status through the manufacturer's latest datasheet or environmental declaration before finalizing procurement orders.

Selection Notes

Select this component when a PNP transistor with moderate current handling capabilities and high gain is required for space-constrained designs. The SOT-23-3 package offers a compact solution compared to larger through-hole alternatives. Consider the 45 V collector-emitter voltage limit and 100 mA continuous current rating to ensure operation remains within safe limits for the intended application environment.

Part Context

This part belongs to the Panjit GPT-03TP series of general-purpose transistors. It is functionally similar to industry-standard BC857B devices but may exhibit different gain binning characteristics due to the 'BW' suffix. The component is designed for mass production in consumer electronics and industrial control systems where small form factor and consistent electrical performance are critical design factors.

Replacement Considerations

Cross-reference with BC857B variants from other manufacturers, ensuring that the replacement device meets or exceeds the 220 minimum hFE requirement specified for the BW bin. Verify that alternative packages maintain the same pinout configuration to prevent board redesign.