BCX70JLT1

Overview

The onsemi BCX70JLT1 is an NPN general-purpose amplification transistor housed in a SOT-23 (TO-236AB) surface-mount package. It features a collector-emitter voltage rating of 45 V and a maximum continuous collector current of 200 mA. The device supports a power dissipation of 200 mW and operates within a temperature range of -55°C to +150°C. It is RoHS compliant and lead-free, designed for low-voltage, low-current switching and amplification applications.

Feature Summary

• NPN silicon planar epitaxial structure
• Low voltage operation capability
• Surface-mount SOT-23 packaging

Applications

• General purpose switching
• General purpose amplification

Procurement Notes

Verify the manufacturer source document directly, as the provided knowledge base lists the BCX70K as not recommended for new designs. Confirm the specific suffix LT1 availability and current production status through official onsemi channels or authorized distributors before finalizing procurement plans.

Selection Notes

Select this component for low-voltage signal processing tasks requiring small form factors. Ensure the design accounts for the 200 mW power dissipation limit and verify that the 45 V collector-emitter voltage meets the circuit requirements. Compare against similar NPN transistors if higher current ratings are needed.

Part Context

This part belongs to the family of small-signal NPN transistors intended for consumer and industrial electronics. It serves as a compact alternative to larger through-hole packages while maintaining standard electrical characteristics suitable for basic analog and digital control circuits.

Replacement Considerations

The BCX70K is listed as a similar level replacement with the same pinout and package but is marked as not recommended for new designs. Verify compatibility with other generic SOT-23 NPN transistors if supply constraints exist.