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Product Detailed Parameters
- Description：TRANS BRT NPN 50V SC59
- 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 onsemi MUN2237T1G is an NPN Bias Resistor Transistor (BRT) housed in the SC-59 surface-mount package. It integrates a single transistor with a monolithic bias network consisting of a series base resistor and a base-emitter resistor. The device features a collector-emitter voltage rating of 50 Vdc, a continuous collector current of 100 mAdc, and a total power dissipation of 230 mW at 25°C. Typical internal resistors are 47 kOhms for R1 and 22 kOhms for R2, yielding a ratio of 2.15. Minimum DC current gain (hFE) is specified at 80.
Feature Summary
- Integrates a single NPN transistor with a monolithic bias resistor network to replace discrete components
- Designed for low-power surface mount applications using the SC-59 package
- Eliminates external biasing components to reduce board space and system cost
Applications
- Level shifting between 12V or 24V circuits and logic levels
- Open collector inverter configurations
- Unregulated current source implementations
Procurement Notes
Verify the specific ordering suffix when sourcing this component. The 'G' suffix indicates a lead-free package compliant with RoHS standards. Confirm that the required shipping format matches the standard 3000-unit tape and reel configuration provided by the manufacturer.
Selection Notes
Select this BRT variant based on its specific 47k/22k resistor ratio and 50V voltage rating. Ensure the application requires an NPN configuration with a minimum hFE of 80. Verify that the SC-59 package dimensions fit the available PCB footprint constraints.
Part Context
This component belongs to the MUN2211T1 Series of digital transistors from onsemi. The series provides various combinations of integrated bias resistors to suit different drive requirements while maintaining a consistent physical form factor and electrical interface across the family.
Replacement Considerations
MUN2237T1G
FAQ
What is the pinout configuration for the SC-59 package?
Pin 1 is the Emitter (Ground), Pin 2 is the Base (Input), and Pin 3 is the Collector (Output).
How does the BRT simplify circuit design compared to discrete components?
It eliminates the need for individual external resistors by integrating them into a single monolithic device, thereby reducing component count and board space.
