UNR31AMG0L

Overview

The UNR31AMG0L is a PNP pre-biased bipolar junction transistor (BJT) manufactured by Panasonic Industry. It integrates internal bias resistors R1 and R2 within an SSSMini3-F1 surface-mount package, which corresponds to the SOT-723 form factor. The device features a collector-emitter breakdown voltage of 50 V and a maximum continuous collector current of 80 mA. Key electrical specifications include a DC current gain (hFE) of at least 80 at Ic=5mA and Vce=10V, with a saturation voltage of 250 mV max at Ib=300µA and Ic=10mA. Internal resistances are fixed at 2.2 kOhms for the base resistor (R1) and 47 kOhms for the emitter-base resistor (R2). The component has a maximum power dissipation of 100 mW and a transition frequency of 80 MHz.

Feature Summary

• Integrated dual bias resistors simplify circuit design by reducing component count and board space requirements.
• Compact SSSMini3-F1 surface-mount package enables high-density mounting on printed circuit boards.
• Pre-biased configuration ensures stable switching performance with consistent turn-on and turn-off characteristics.

Applications

• Switching applications in portable electronic devices requiring compact discrete solutions.
• Driver circuits for low-power loads where integrated biasing reduces layout complexity.
• Signal processing stages in consumer electronics utilizing small-signal PNP transistors.

Procurement Notes

Verify part status as obsolete before procurement planning. Confirm exact suffix compatibility if substituting from inventory. Request official datasheets to validate resistor values and thermal limits. Ensure supply chain sources provide genuine Panasonic Industry components to avoid counterfeit risks. Check for alternative active parts if long-term availability is required.

Selection Notes

Select this component when a PNP pre-biased transistor with 50V rating and 80mA current capacity is needed. The integrated 2.2k/47k resistor network suits applications requiring specific bias ratios without external components. Consider the SSSMini3-F1 package constraints for PCB footprint. Evaluate thermal dissipation limits of 100mW against expected operating conditions.

Part Context

The UNR31AMG0L belongs to the UNR31 series of pre-biased transistors from Panasonic Industry. This series offers various configurations of NPN and PNP types with different resistor combinations. The AMG0L variant specifically denotes the PNP type with defined internal resistance values. It is part of Panasonic's portfolio of small signal discrete semiconductors designed for modern electronic equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalents with matching Vceo, Ic, hFE, and package dimensions. Ensure internal resistor values align with original design requirements when considering cross-brand alternatives.