Nexperia USA Inc. PUMH9/ZLH

Overview

PUMH9 from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT363-3 (TSSOP6) package, integrating two matched NPN transistors with built-in bias resistors R1 = 10 kΩ and R2 = 47 kΩ. It delivers 100 mA per transistor, supports 50 V V_CEO, and is optimized for digital switching in space-constrained automotive and industrial control circuits.

For engineers reviewing the PUMH9 datasheet, PUMH9 pinout, PUMH9 application, or PUMH9 equivalent, this device serves as a drop-in replacement for discrete BC847-based driver stages-reducing PCB area, eliminating external base resistors, and simplifying load-switching and IC input control designs.

Technical Context

The PUMH9 integrates two independent NPN transistors on a single die, each with dedicated internal base bias networks (R1 to base, R2 from base to emitter). Its architecture eliminates external resistor placement while preserving full DC current gain (h_FE ≥ 100 at I_C = 5 mA) and low saturation voltage (V_CEsat ≤ 100 mV).

It operates across –55 °C to +150 °C ambient, with per-transistor power dissipation limited to 200 mW and per-device total of 300 mW on FR4 PCB. Thermal resistance is 625 K/W (per transistor) and 417 K/W (per device), enabling reliable operation in thermally constrained embedded modules.

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) is a 6-pin, surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.95 mm, with 0.65 mm pitch and gull-wing leads. Designed for reflow soldering on FR4 PCBs with standard footprint per Figure 12.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-NPN resistor-equipped transistor applications.

Compared with BC847BPDW1T3G, PUMH9 reduces bill-of-materials and assembly steps at the cost of fixed biasing; compared with PUMB9, it provides native NPN logic-level switching without polarity inversion or redesign.

Availability

PUMH9 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input conditioning, and IoT sensor node power management requiring stable component supply and long-term lifecycle assurance.

Supply support for PUMH9 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 high-volume, high-reliability essential semiconductors-including logic, discretes, MOSFETs, and ESD protection devices.

The PUMH9 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in digital interface and load-switching applications across automotive and industrial markets.

FAQ

What is the maximum continuous current per transistor in the PUMH9?

The PUMH9 supports 100 mA continuous output current per transistor under rated conditions (T_amb ≤ 25 °C, FR4 PCB). Derating applies above 25 °C ambient-power dissipation drops linearly to zero at 150 °C junction temperature, per the 417 K/W per-device thermal resistance specification.

Can PUMH9 be used in place of two separate BC847 transistors?

Yes-PUMH9 replaces two BC847 transistors plus four external bias resistors (two 10 kΩ and two 47 kΩ) in digital switching applications. Pin compatibility differs (SOT363-3 vs. SOT23), so layout revision is required, but functional equivalence is confirmed for V_CEO = 50 V, I_O = 100 mA, and h_FE ≥ 100 use cases.

Does PUMH9 support 3.3 V microcontroller GPIO direct drive?

Yes-its VI(on) is 0.8 V (typ.) and VI(off) is 0.7 V (typ.) at 25 °C, ensuring reliable turn-on with 3.3 V logic high and turn-off with logic low. The integrated R1 = 10 kΩ draws ~330 µA from a 3.3 V GPIO, well within standard MCU output capability.

Is there a lead-free and RoHS-compliant version of PUMH9?

Yes-PUMH9 is manufactured in full compliance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. All variants carry "PUMH9" ordering code with lead-free matte-tin termination and halogen-free molding compound, verified per Nexperia's material declarations.