MUN2133T1

Overview

The MUN2133T1 is a PNP Bias Resistor Transistor (BRT) from onsemi, housed in an SC-59 surface-mount package. It integrates a single transistor with a monolithic bias network consisting of a series base resistor (R1 = 4.7 kΩ) and a base-emitter resistor (R2 = 47 kΩ). Key electrical ratings include a collector-emitter voltage (VCEO) of 50 Vdc, a continuous collector current (IC) of 100 mAdc, and a total device power dissipation (PD) of 230 mW at 25°C. The DC current gain (hFE) has a minimum value of 80 at IC = 5.0 mA and VCE = 10 V. Operating temperature ranges from -55°C to +150°C.

Feature Summary

• Integrates a PNP transistor with a monolithic bias resistor network to replace discrete components.
• Reduces printed circuit board space and component count by combining the transistor and resistors into a single device.
• Designed for low-power surface mount applications using the SC-59 package.

Applications

• Simplifying circuit design by eliminating external biasing resistors.
• Replacing single devices and their external resistor bias networks in digital logic interfaces.
• Low-power surface mount applications requiring compact form factors.

Procurement Notes

Verify the specific ordering suffix and manufacturer documentation when sourcing. Confirm that the component matches the required SC-59 package dimensions and pinout configuration for your PCB layout. Ensure compliance with relevant environmental standards such as RoHS if applicable to your manufacturing process. Cross-reference the part number with official distributor catalogs to confirm availability and authenticity.

Selection Notes

Select this component when a PNP digital transistor with a 4.7 kΩ base resistor and 47 kΩ emitter resistor is required. The 50 V collector-emitter voltage rating suits general-purpose switching applications. Consider the SC-59 package size constraints and the 100 mA current capability against your circuit's load requirements. Verify thermal dissipation needs based on your ambient operating conditions and PCB pad layout.

Part Context

The MUN2133T1 belongs to the MUN21xxT1 series of PNP Bias Resistor Transistors manufactured by onsemi. This series is designed to simplify circuit designs by integrating bias resistors directly with the transistor die. The device utilizes the SC-59 (CASE 318D) plastic surface-mount package, which is suitable for wave or reflow soldering processes.

Replacement Considerations

Direct substitutes within the same series include other MUN21xxT1 variants with different resistor ratios, such as MUN2132T1 or MUN2134T1, provided the resistance values match the circuit requirements. Ensure any replacement maintains the PNP polarity, 50 V voltage rating, and SC-59 package compatibility.