PUMB9/ZLX

Overview

The PUMB9/ZLX is a dual pre-biased NPN transistor array manufactured by Nexperia USA Inc. It integrates two NPN transistors with built-in biasing resistors in a compact 6-TSSOP surface-mount package. The device features a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA. Internal resistor values are specified as R1 = 10 kΩ and R2 = 47 kΩ. Key electrical characteristics include a transition frequency (fT) of 180MHz, a DC current gain (hFE) minimum of 100 at 5mA/5V, and a saturation voltage of 100mV at specific test conditions. The component is rated for a power dissipation of 300mW and complies with AEC-Q100 automotive standards.

Feature Summary

• Integrated biasing resistors simplify circuit design by reducing external component count
• Automotive-grade qualification ensures reliability in demanding environments
• Compact SOT-363 compatible packaging supports high-density board layouts

Applications

• Automotive logic level shifting and switching applications
• General-purpose signal processing circuits requiring integrated biasing
• High-density consumer electronics where space optimization is critical

Procurement Notes

Verify the exact suffix designation during procurement, as standard distributors typically list the base part number PUMB9 or PUMB9,125. Confirm that the ZLX suffix corresponds to the intended tape-and-reel configuration or specific manufacturing batch requirements. Cross-reference the ordering code with official Nexperia documentation to ensure compatibility with automated assembly processes and avoid discrepancies in packaging specifications.

Selection Notes

Select this component when a dual NPN configuration with fixed internal biasing is required for simplified driver circuits. The 10kΩ base resistor value suits moderate drive currents, while the 47kΩ emitter resistor provides stability. Ensure the application operates within the 50V voltage limit and 100mA current constraints. Consider the 180MHz bandwidth for high-speed switching needs and verify thermal management capabilities given the 300mW power dissipation rating in the small TSSOP package.

Part Context

This component belongs to the PUM series of resistor-equipped double transistors from Nexperia. It serves as the NPN counterpart to the PNP PUMB9 variant and complements mixed-type options like the PUMD9. These devices are designed to replace multiple discrete components, offering a space-saving solution for analog and digital switching applications in modern electronic systems.

Replacement Considerations

Direct functional substitutes include the PUMH9 (NPN/NPN) and PUMD9 (NPN/PNP). Verify pinout compatibility and resistor tolerance specifications before substitution. Check if alternative packages such as SC-88 or SOT-363 variants meet the physical footprint requirements of the existing design.