MUN2133T1G

Overview

The MUN2133T1G is a single PNP Digital Transistor (BRT) manufactured by onsemi, housed in an SC-59 (SOT-23-3) surface-mount package. It integrates a monolithic bias network consisting of a series base resistor and a base-emitter resistor to simplify circuit design. Key electrical specifications include a maximum collector-emitter voltage (VCEO) of 50 V and a continuous collector current (IC) of 100 mA. The device features a typical input resistance (R1) of 4.7 kOhms with a typical resistor ratio of 1. Minimum DC current gain (hFE) is specified at 80. Power dissipation reaches 338 mW, with an operating temperature range from -55°C to +150°C.

Feature Summary

• Integrates a single PNP transistor with a monolithic bias resistor network to replace discrete components.
• Reduces board space and component count by combining the transistor and bias resistors into one package.
• Designed for simplified circuit design in digital switching applications.

Applications

• General-purpose digital switching circuits
• Logic interface and level shifting
• Driver circuits for low-power loads

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pinout configuration and internal resistor values. Ensure the selected variant matches the required polarity and resistance ratios for the target application. Cross-reference the part number with the latest RoHS compliance documentation to meet environmental standards. Confirm availability through authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a PNP digital transistor with a 4.7 kOhm base resistor is required. Compare the 50 V voltage rating and 100 mA current capacity against circuit demands. Consider the SC-59 package size for space-constrained designs. Evaluate the thermal performance within the specified temperature range. Verify compatibility with existing logic levels before integration.

Part Context

This part belongs to the MUN2133 series of Bipolar Transistors with Built-in Bias Resistors. It is functionally related to other devices in the M(M)UN21xx/L family, such as the MMUN2133LT1G, which shares similar electrical characteristics but may differ in packaging or automotive qualification status. The series is designed to streamline the implementation of pre-biased transistor networks in modern electronics.

Replacement Considerations

Direct substitutes include the MMUN2133LT1G, which offers identical electrical specifications. Other compatible parts within the same family should be verified for matching resistor ratios and voltage ratings. Always consult the official datasheet to ensure pinout compatibility and functional equivalence before substitution.