MUN5111T1G

Overview

The onsemi MUN5111T1G is a single PNP Bias Resistor Transistor (BRT) housed in an SC-70/SOT-323 package. It integrates a transistor with a monolithic bias network consisting of a series base resistor and a base-emitter resistor. Key electrical parameters include a maximum collector-emitter voltage of 50 Vdc, continuous collector current of 100 mAdc, and typical input resistors R1 and R2 both at 10 kOhms with a ratio of 1.0. The device operates within a junction temperature range of -55°C to +150°C.

Feature Summary

• Integrates a single PNP transistor with a monolithic bias network containing two resistors to replace discrete components.
• Designed to simplify circuit design by reducing board space and component count.
• Manufactured using lead-free, halogen-free, and brominated flame retardant-free processes compliant with RoHS standards.

Applications

• General-purpose switching applications requiring simplified biasing networks.
• Replacement for discrete transistor and external resistor combinations in compact designs.
• Digital logic interface circuits utilizing pre-biased configurations.

Procurement Notes

Verify the specific ordering suffix 'T1G' corresponds to the standard tape and reel packaging configuration. Confirm that the SC-70/SOT-323 package dimensions align with the target PCB footprint requirements. Ensure compliance with Pb-Free and RoHS directives if required by the end-use environment. Cross-reference the marking code '6A' for identification during assembly.

Selection Notes

Select this component when a single PNP BRT with equal base and base-emitter resistors is required. The 10 kOhm resistor values are suitable for standard logic level driving. Consider the thermal dissipation limits of the SC-70 package for high-current switching scenarios. Verify that the 50V breakdown voltage meets the circuit's maximum operating voltage constraints.

Part Context

This part belongs to the DTA114E/D digital transistor family, which includes variants like MUN2111 and MUN5111. These devices share the same internal circuit topology but differ in packaging and shipping options. The MUN5111T1G specifically utilizes the SC-70 form factor, distinguishing it from SOT-23 or SC-59 versions within the same product line.

Replacement Considerations

Direct functional equivalents include other single PNP BRTs with 10k/10k resistor ratios such as the SMUN5111T1G. Alternative packages like MMUN2111LT1G (SOT-23) offer identical electrical characteristics but require different footprints. Verify pinout compatibility before substituting with devices from other manufacturers.