AC857BQ-7

Single Bipolar Transistors Overview

The AC857BQ-7 is a PNP small-signal transistor manufactured by Diodes Incorporated, housed in an SOT23 package. It is designed for switching and audio frequency amplifier applications. The device meets automotive requirements with AEC-Q101 qualification and IATF 16949 manufacturing standards. Key electrical parameters include a collector-base voltage of -50V, collector-emitter voltage of -45V, continuous collector current of -100mA, and power dissipation of 310mW at +25°C. DC current gain ranges from 220 to 475 for the BQ variant.

Single Bipolar Transistors Feature Summary

• AEC-Q101 qualified for automotive applications
• Totally lead-free and fully RoHS compliant
• Halogen and antimony free green device
• Ideally suited for automatic insertion

Single Bipolar Transistors Applications

• Switching circuits
• Audio frequency (AF) amplifiers

Single Bipolar Transistors Procurement Notes

Verify that the component is sourced from authorized channels to ensure compliance with Diodes Incorporated's standard terms and conditions. Confirm the specific suffix matches the required automotive qualification level. Check datasheet revision dates against project specifications. Ensure storage and handling procedures adhere to moisture sensitivity level 1 guidelines per J-STD-020 standards.

Single Bipolar Transistors Selection Notes

Select this component when a PNP small-signal transistor with high DC current gain is required for space-constrained designs. The SOT23 package facilitates automated assembly processes. Consider the AC857CQ variant if higher current gain is necessary. Verify thermal management capabilities based on the specific PCB copper area and ambient temperature conditions during operation.

Single Bipolar Transistors Part Context

This part belongs to the AC857 series of PNP bipolar junction transistors. It serves as the complementary counterpart to the AC847 NPN type. The series is engineered to meet stringent automotive industry standards, ensuring reliability in demanding environments. The product line includes variants differentiated by current gain characteristics.

Single Bipolar Transistors Replacement Considerations

The AC857CQ-7 is a direct alternative within the same series offering different gain characteristics. For NPN functionality, the AC847BQ-7 or AC847CQ-7 are the complementary options. Ensure any substitute maintains the SOT23 footprint and meets the required voltage and current ratings.