MUN5112T1G

Overview

The MUN5112T1G is a single Bias Resistor Transistor (BRT) manufactured by onsemi, featuring a PNP silicon configuration. It integrates a monolithic bias network comprising a series base resistor and a base-emitter resistor within an SOT-23 surface-mount package. The device supports a maximum collector-emitter voltage of 50 V and a continuous collector current of -100 mA. Key electrical parameters include a typical input resistance of 4.7 kOhms, a minimum DC current gain (hFE) of 60, and a power dissipation rating of 200 mW. It operates reliably across a temperature range from -55°C to +150°C.

Feature Summary

• Integrates a single transistor with a monolithic bias network consisting of two resistors to replace discrete components.
• Designed to simplify circuit design while reducing overall board space and component count.
• Utilizes an SOT-23 surface-mount package suitable for low-power applications.

Applications

• General-purpose switching circuits requiring simplified biasing networks.
• Low-power surface mount applications where board space is limited.
• Replacement for discrete transistor and external resistor combinations in digital logic interfaces.

Procurement Notes

Verify the specific suffix T1G against the manufacturer's datasheet to confirm packaging details and compliance status. Ensure that the ordering quantity aligns with standard reel sizes if bulk procurement is required. Cross-reference the part number with official distributor catalogs to confirm current availability and lead times before finalizing purchase orders.

Selection Notes

Select this component when a PNP digital transistor with a 4.7 kOhm base resistor is required. Confirm that the 50 V collector-emitter voltage rating meets the circuit's maximum operating conditions. Verify that the SOT-23 package dimensions fit the available PCB footprint and that the thermal dissipation capabilities are sufficient for the intended application environment.

Part Context

This component belongs to the MUN5112 series of Bias Resistor Transistors from onsemi. These devices are engineered to consolidate multiple discrete components into a single package, enhancing reliability and manufacturing efficiency. The series is widely used in consumer electronics and industrial control systems where compact design and simplified assembly processes are prioritized.

Replacement Considerations

Compatible substitutes include the MMUN5112LT1G and NSVMUN5112T1G. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure that any alternative package type matches the physical constraints of the existing design.