MUN2211T3

Overview

The MUN2211T3G is an NPN silicon Bias Resistor Transistor (BRT) from onsemi, housed in a surface-mount SC-59 package. It integrates a single transistor with a monolithic bias network consisting of two resistors: a series base resistor and a base-emitter resistor. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 Vdc, a continuous collector current (IC) of 100 mAdc, and a total device power dissipation (PD) of 230 mW at 25°C. The typical input resistance (R1) is 10 kOhms, with a resistor ratio (R1/R2) of 1. The minimum DC current gain (hFE) is 35 at IC = 5.0 mA and VCE = 10 V.

Feature Summary

• Integrates a single NPN transistor with a monolithic bias network containing a series base resistor and a base-emitter resistor to replace discrete components.
• Designed for low-power surface mount applications using the SC-59 package with modified gull-wing leads that absorb thermal stress during soldering.
• Features Moisture Sensitivity Level 1 classification and ESD protection rated at Class 1 for the Human Body Model and Class B for the Machine Model.

Applications

• Level shifting circuits connecting 12 or 24 Volt logic to lower voltage systems
• Open collector inverter configurations for signal inversion
• Unregulated current source implementations

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm shipping quantities and packaging formats. Confirm RoHS compliance status and Pb-free availability through manufacturer datasheets. Ensure the SC-59 package dimensions align with PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when circuit design requires simplification by reducing board space and component count. Verify that the 10 kOhm typical input resistance and 1:1 resistor ratio meet the specific biasing requirements. Ensure the 50 V collector-emitter voltage rating accommodates the maximum operating voltage of the application.

Part Context

This part belongs to the MUN2211T1 Series of preferred devices manufactured by onsemi. The series includes various NPN BRTs with different integrated resistor values. The 'T3' suffix indicates a specific shipping quantity configuration compared to other series variants like 'T1'.

Replacement Considerations

MUN2211T3G serves as the lead-free equivalent to the MUN2211T3. Both share identical electrical characteristics and pinouts within the SC-59 package. Verify marking codes and shipping specifications when substituting between these variants.

FAQ

What is the internal resistor configuration of the MUN2211T3?

The device contains a monolithic bias network consisting of a series base resistor (R1) and a base-emitter resistor (R2).

How does the SC-59 package handle thermal stress during assembly?

The SC-59 package features modified gull-wing leads designed to absorb thermal stress during soldering, eliminating the possibility of damage to the die.

What are the ESD protection ratings for this component?

The component has an ESD rating of Class 1 for the Human Body Model and Class B for the Machine Model.