PUMH9/ZLF

Overview

The PUMH9/ZLF is a dual NPN pre-biased transistor array manufactured by Nexperia USA Inc. It integrates two independent NPN transistors with built-in bias resistors in a compact SOT-363 (SC-88) surface-mount package. The device supports a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA, with a total power dissipation rating of 300mW. Internal resistor values are specified as 10kΩ for the base (R1) and 47kΩ for the emitter (R2). Key electrical characteristics include a DC current gain (hFE) of at least 100 at 5mA/5V and a saturation voltage of 100mV max at 250µA base current. The component complies with RoHS 3 standards and carries an MSL rating of 1.

Feature Summary

• Integrates dual NPN transistors with fixed internal biasing resistors to simplify circuit design.
• Provides high-density packaging in a small outline thin plastic package for space-constrained applications.
• Ensures consistent switching performance through matched internal resistor ratios.

Applications

• General-purpose switching circuits requiring simplified bias networks.
• Low-voltage logic interface applications.
• Signal conditioning stages in consumer electronics.

Procurement Notes

Verify the specific suffix designation during procurement, as standard listings often use PUMH9,115 or similar variants. Confirm that the ZLF suffix strictly indicates lead-free compliance without altering the electrical pinout or functional parameters relative to the standard datasheet specifications. Ensure the ordering code matches the required tape-and-reel or cut-tape packaging format for automated assembly processes.

Selection Notes

Select this component when a dual NPN configuration with integrated biasing is required to reduce external component count. The 10kΩ base resistor value suits moderate drive currents, while the 47kΩ emitter resistor provides stability. Verify that the 50V breakdown voltage and 100mA current limits align with the target application's operational requirements before finalizing the design.

Part Context

The PUMH9 series belongs to Nexperia's portfolio of pre-biased transistor arrays designed to replace discrete resistor-transistor combinations. These devices streamline PCB layout by consolidating multiple components into a single surface-mount package. The family typically includes various resistor ratio options to accommodate different drive requirements across diverse electronic systems.

Replacement Considerations

Direct substitutes include other Nexperia PUMH9 variants such as PUMH9,115, PUMH9,125, and PUMH9,135, which share identical pinouts but may differ in internal resistor values or packaging quantities. Cross-brand replacements require verification of matching hFE, Vceo, and R1/R2 ratios to ensure circuit compatibility.