MUN5234DW1T1

Overview

The MUN5234DW1T1 is an NPN Silicon Surface Mount Transistor with a monolithic bias resistor network, housed in the SOT-363 package. It contains two BRT devices within one unit. Maximum ratings include a collector-emitter voltage of 50 Vdc and a continuous collector current of 100 mAdc. The device features a typical input resistor (R1) of 22 kOhms and a base-emitter resistor (R2) of 47 kOhms. Thermal characteristics specify a total device dissipation of 187 mW at 25°C for one junction heated. Operating temperature ranges from -55 to +150 °C.

Feature Summary

• Integrates a single transistor with a monolithic bias network consisting of series base and base-emitter resistors.
• Designed to replace individual discrete devices and external resistor bias networks.
• Dual configuration provides two BRT devices within a compact SOT-363 surface mount package.

Applications

• Low power surface mount applications where board space is limited.
• Circuit designs requiring simplified component count and reduced board space.
• Digital switching circuits utilizing pre-biased transistor arrays.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance status. Ensure that the selected variant matches the required thermal and electrical specifications for the target application environment. Cross-reference the manufacturer's latest datasheet revision to confirm availability and any potential design changes or obsolescence notices prior to final procurement decisions.

Selection Notes

Select this component when a dual NPN digital transistor with specific 22k/47k resistor ratios is required. Verify that the 50V collector-emitter voltage and 100mA current limits meet the circuit requirements. Consider the SOT-363 package dimensions for PCB layout constraints. Confirm that the thermal dissipation capabilities are sufficient for the intended operating conditions and ambient temperatures.

Part Context

This part belongs to the MUN5211DW1T1 Series of Dual Bias Resistor Transistors manufactured by onsemi. The series includes various configurations with different resistor values to suit diverse circuit needs. All devices in this series share the same SOT-363 package and fundamental NPN silicon construction, differing primarily in their internal resistor network values.

Replacement Considerations

Direct replacement options within the same series include other MUN52xxDW1T1 variants with compatible pinouts but different resistor values. Verify that the substitute part's R1 and R2 values align with the original circuit design requirements to ensure proper biasing and switching performance.

FAQ

What are the specific resistor values for the MUN5234DW1T1?

The MUN5234DW1T1 features a typical series base resistor (R1) of 22 kOhms and a base-emitter resistor (R2) of 47 kOhms.

What is the maximum collector-emitter voltage for this device?

The maximum collector-emitter voltage (VCEO) for the MUN5234DW1T1 is 50 Vdc.

How many transistors are contained within the SOT-363 package?

The SOT-363 package houses two Bias Resistor Transistor (BRT) devices.