MUN2140T1G

Overview

The MUN2140T1G is a PNP Bias Resistor Transistor (BRT) from onsemi, integrating a single transistor with a monolithic bias network consisting of a series base resistor and a base-emitter resistor. It replaces discrete devices and external resistors to reduce board space and system cost. The device operates within a collector-emitter voltage range of 50 Vdc and supports continuous collector currents up to 100 mAdc. Electrical characteristics include a minimum DC current gain (hFE) of 120 at 5.0 mA and 10 V, and an input resistor (R1) typical value of 47 kOhms. It is housed in a SC-59 package and functions reliably across a junction temperature range of -55°C to +150°C.

Feature Summary

• Integrates a single PNP transistor with a monolithic bias network comprising two resistors to eliminate external components.
• Designed to simplify circuit design by replacing individual transistors and associated bias resistor networks.
• Reduces overall board space and component count in electronic systems.

Applications

• General-purpose switching applications requiring simplified biasing.
• Driver circuits for logic interfaces where discrete resistor networks are typically used.
• Power management circuits utilizing pre-biased transistor configurations.

Procurement Notes

Verify the specific ordering suffix 'T1G' corresponds to the SC-59 package and tape & reel shipping configuration as documented in the official datasheet. Confirm that the component meets Pb-Free, Halogen Free, and RoHS compliance requirements if environmental standards are critical for the intended application.

Selection Notes

Select this component when a PNP digital transistor with a 47 kOhm base resistor is required. Ensure the operating voltage does not exceed the 50 Vdc collector-emitter rating and that the thermal dissipation capabilities of the SC-59 package align with the expected power load in the target design.

Part Context

This part belongs to the DTA144T/D family of Digital Transistors (BRT). It shares electrical specifications with other variants such as MMUN2140LT1G and MUN5140T1G, differing primarily in the physical package style and pinout configuration while maintaining identical internal circuit topology and performance metrics.

Replacement Considerations

Direct functional equivalents include MMUN2140LT1G (SOT-23), MUN5140T1G (SC-70/SOT-323), and DTA114TE (SC-75). Verify pin compatibility and package dimensions before substitution to ensure mechanical fit on the printed circuit board.

FAQ

What is the typical value of the integrated base resistor R1?

The typical value for the input resistor R1 is 47 kOhms, with a minimum of 32.9 kOhms and a maximum of 61.1 kOhms.

What is the minimum DC current gain (hFE) specified for this device?

The minimum DC current gain (hFE) is 120, measured under conditions of IC = 5.0 mA and VCE = 10 V.

Does the 'T1G' suffix indicate a change in the internal circuit function?

No, the 'T1G' suffix indicates the packaging type (Tape & Reel) and Pb-Free status; it does not alter the electrical characteristics or internal circuit topology compared to other suffixes in the same family.