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Product Detailed Parameters
- Description：TRANS BRT PNP 50V SOT-23
- Series：-
- Mfr：onsemi
- Package：Bulk
- Resistors Included：-
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Resistor - Base (R1)：-
- Resistor - Emitter Base (R2)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- Frequency - Transition：-
- Power - Max：-
- Grade：-
- Qualification：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The MMUN2132LT1 is a PNP Bias Resistor Transistor (BRT) from onsemi, designed to replace discrete transistors and external bias networks. It integrates a single transistor with a monolithic bias network consisting of two resistors: a series base resistor and a base-emitter resistor. The device is housed in an SOT-23 package suitable for low power surface mount applications. Key electrical parameters include a collector-emitter voltage (VCEO) of 50 Vdc, a continuous collector current (IC) of 100 mAdc, and a total device dissipation (PD) of 246 mW at 25°C. The typical input resistance values are 4.7 kOhms for both R1 and R2.
Feature Summary
- Integrates a single PNP transistor with a monolithic bias network containing a series base resistor and a base-emitter resistor.
- Reduces system cost and board space by eliminating individual discrete components required for biasing.
- SOT-23 package features modified gull-winged leads that absorb thermal stress during wave or reflow soldering.
Applications
- General purpose switching circuits requiring simplified biasing.
- Low power surface mount applications where board space is limited.
- Replacement for discrete transistor and resistor networks in digital logic interfaces.
Procurement Notes
Verify the specific ordering suffix when sourcing this component. The base part number MMUN2132LT1 may be available with different packaging options such as tape and reel quantities. Confirm RoHS compliance status and lead-free availability through official manufacturer documentation or authorized distributors before procurement.
Selection Notes
Select this component for applications requiring a PNP digital transistor with equal internal bias resistors. Ensure the circuit design accommodates the 50 V collector-emitter voltage rating and 100 mA current limit. Consider the thermal characteristics and derating curves provided in the datasheet for high ambient temperature environments.
Part Context
This component belongs to the MMUN21xxLT1 series of Bias Resistor Transistors manufactured by onsemi. The series includes various PNP configurations with different internal resistor ratios to suit diverse circuit requirements. All devices in this family share the same SOT-23 package and fundamental BRT architecture.
Replacement Considerations
Publicly confirmed substitute part numbers for MMUN2132LT1 are not identified in the provided source material. Verify compatibility with existing designs by comparing pinout configurations, electrical ratings, and internal resistor values against potential alternatives.
