Mje340 SGS – Manual (PDF)

Erik from ManualsPlus — Thu, 25 Dec 2025 17:15:34 +0000

The manual for the MJE340 and MJE350 complementary silicon power transistors covers their use in medium power linear and switching applications, providing details on their electrical characteristics, thermal data, and mechanical dimensions. It also includes information on absolute maximum ratings and safe operating area derating curves to assist with setup, operation, and troubleshooting.

Brand: Manuals
Model: SGS
Type: manual
File size: 339.9 KB

Manual Overview

The manual for the MJE340 and MJE350 complementary silicon power transistors provides detailed specifications and operational guidelines for these components, which are used in medium power linear and switching applications. The MJE340 is an NPN transistor, while the MJE350 is its PNP counterpart. Both are housed in SOT-32 packages. Key parameters include a collector-emitter voltage of 300 V, a collector current of 0.5 A, and a total power dissipation of 20.8 W at a case temperature below 25 °C. The manual outlines the absolute maximum ratings, thermal resistance, and electrical characteristics, such as collector cut-off current and DC current gain. It also includes graphs for safe operating areas, DC current gain, and collector-emitter saturation voltage. The document provides mechanical dimensions for the SOT-32 package and emphasizes that the transistors should not be used as critical components in life support devices without explicit approval from STMicroelectronics. No specific troubleshooting flow, error codes, or calibration procedures are detailed in the manual.

Quick Issues Covered

Diagnose collector-emitter voltage issues in MJE340/MJE350 transistors.
Identify error codes related to cut-off current failures.
Trace circuit schematics for complementary PNP-NPN device configurations.

Overview

The MJE340 and MJE350 are complementary silicon power transistors manufactured by STMicroelectronics. The MJE340 is an NPN transistor designed for medium power linear and switching applications, while the MJE350 is its complementary PNP counterpart. Both are mounted in a SOT-32 package and are used in industrial equipment. The manual provides details on their absolute maximum ratings, thermal data, and electrical characteristics.