MUN2233T1G

Overview

The MUN2233T1G is an NPN Bias Resistor Transistor (BRT) from onsemi, housed in a SC-59 package. It integrates a single transistor with a monolithic bias network consisting of a series base resistor (R1 = 4.7 kOhms typical) and a base-emitter resistor (R2 = 47 kOhms typical). The device supports a continuous collector current of 100 mA and withstands a collector-emitter voltage of 50 Vdc. Electrical characteristics include a minimum DC current gain (hFE) of 80 at 5.0 mA and 10 V. Power dissipation reaches 338 mW at 25°C ambient temperature, with an operating temperature range spanning -55°C to +150°C.

Feature Summary

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

Applications

• Replacing discrete single devices and external resistor bias networks in low power surface mount applications.
• General purpose switching circuits requiring simplified input drive configurations.
• Automotive and industrial applications where AEC-Q101 qualification and PPAP capability are required.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the correct package type and shipping quantity. The standard T1G suffix indicates the SC-59 package shipped in tape and reel format. Confirm that the required variant matches the intended mechanical footprint and thermal performance for the target application before finalizing procurement orders.

Selection Notes

Select this component when a compact NPN solution with integrated biasing is needed to minimize layout area. Ensure the required base resistance values align with the fixed R1 and R2 ratios provided in the datasheet. Verify that the maximum ratings for collector current and voltage exceed the peak operational demands of the specific circuit design.

Part Context

This part belongs to the DTC143Z digital transistor family, which includes variants like MMUN2233LT1G and MUN5233T1G. These devices share identical electrical characteristics but differ in physical packaging, such as SOT-23 or SC-70. The family is designed to offer consistent performance across different form factors for flexible PCB layout options.

Replacement Considerations

Direct functional equivalents within the same family include MMUN2233LT1G (SOT-23 package) and MUN5233T1G (SC-70/SOT-323 package). Cross-brand replacements must be verified against the specific R1/R2 ratio and pinout configuration to ensure compatibility without redesigning the surrounding circuitry.

FAQ

What is the internal resistor configuration for the MUN2233T1G?

The device contains a series base resistor (R1) of 4.7 kOhms and a base-emitter resistor (R2) of 47 kOhms.

Is the MUN2233T1G suitable for automotive applications?

Yes, versions with the 'S' or 'NSV' prefix are AEC-Q101 qualified and PPAP capable for automotive use.

What is the maximum collector-emitter voltage rating?

The maximum collector-emitter voltage (VCEO) is rated at 50 Vdc.