Nexperia USA Inc. PUMH9-QZ

Overview

PUMH9-QZ from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT363-3 (TSSOP6) package, rated for 50 V V_CEO, 100 mA per transistor output current, with integrated bias resistors R1 = 10 kΩ and R2 = 47 kΩ. It functions as a compact, AEC-Q101-qualified digital switching pair for automotive signal conditioning and load control.

For engineers reviewing the PUMH9-QZ datasheet, PUMH9-QZ pinout, PUMH9-QZ application, or PUMH9-QZ equivalent, this device serves as a drop-in alternative to BC847-Q series transistors in space-constrained digital logic interfaces, offering reduced BOM count and simplified base-drive design without external resistors.

Technical Context

The PUMH9-QZ integrates two matched NPN transistors with monolithically embedded bias networks-R1 connects each base to input, R2 bridges base to emitter-enabling direct TTL/CMOS-level drive with defined VI(on)/VI(off) thresholds (0.8–1.4 V on, 0.5–0.7 V off). Each transistor operates independently with isolated emitters (GND1/GND2), supporting dual-channel switching without crosstalk.

Its thermal resistance R_th(j-a) is 417 K/W per device on FR4 PCB, and it sustains 300 mW total power dissipation at T_amb ≤ 25 °C. The built-in f_T of 230 MHz (V_CE = 5 V, I_C = 10 mA) supports fast digital switching up to ~10 MHz edge rates while maintaining low V_CE(sat) ≤ 100 mV at I_C/I_B = 20.

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) plastic surface-mount package: 1.3 mm × 2.2 mm footprint, 0.65 mm pitch, 0.95 mm max height; optimized for automated placement and reflow soldering on FR4 PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NPN switching applications.

Compared with BC847B-Q and PUMB9-Q, the PUMH9-QZ uniquely delivers dual NPN sinking functionality with factory-matched bias networks in one SOT363-3 package-reducing design complexity, validation effort, and production risk for automotive and industrial digital I/O.

Availability

PUMH9-QZ is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input modules, LED indicator drivers, and smart sensor interface hubs requiring stable component supply and AEC-Q101 compliance.

Supply support for PUMH9-QZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The PUMH9-QZ belongs to Nexperia's Resistor-Equipped Transistor (RET) product line-designed specifically to replace discrete transistor-resistor combinations in digital switching applications while meeting stringent automotive reliability standards.

FAQ

What is the maximum operating temperature for continuous operation?

The PUMH9-QZ has a junction temperature limit of 150 °C and an ambient operating range of −55 °C to +150 °C. At 25 °C ambient, it supports 300 mW total power dissipation; derating begins linearly above 25 °C at 0.72 mW/°C based on its 417 K/W thermal resistance.

Can the two transistors share a common emitter connection?

No-the PUMH9-QZ features physically separate emitter terminals (GND1 and GND2) with no internal connection. This isolation prevents current sharing or unintended interaction between channels and supports independent grounding, essential for noise-sensitive or mixed-voltage applications.

Is the R1/R2 ratio fixed or adjustable?

The R2/R1 ratio is fixed at 4.7 (typical), with R1 = 10 kΩ and R2 = 47 kΩ as monolithic thin-film resistors fabricated during wafer processing. These values are not user-adjustable and are guaranteed within ±30% tolerance per the datasheet's limiting values table.

Does PUMH9-QZ support 5 V logic-level input directly?

Yes-its VI(on) is specified at 0.8–1.4 V (typical 1.0 V) and VI(off) at 0.5–0.7 V (typical 0.6 V), making it fully compatible with standard 5 V TTL and 3.3 V CMOS logic outputs without level-shifting. A 5 V input applied to I1 or I2 will reliably saturate the corresponding transistor.