Nexperia USA Inc. PUMH7,115

Overview

PUMH7 from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT363 (SC-88) package, featuring integrated 4.7 kΩ base bias resistor (R1) and open R2 configuration. It delivers 100 mA DC output current per transistor, 50 V V_CEO, and 200 mW per-transistor power dissipation at T_amb ≤ 25 °C - used for low-current digital logic interfacing and IC input control in space-constrained consumer and industrial PCBs.

For engineers reviewing the PUMH7 datasheet, PUMH7 pinout, PUMH7 application, or PUMH7 equivalent, key selection criteria include verified dual-NPN RET topology, confirmed 4.7 kΩ input resistor tolerance (3.3–6.1 kΩ), measured h_FE range (200–330 at I_C = 1 mA), V_CEsat ≤ 100 mV at I_C = 5 mA/I_B = 0.25 mA, and thermal resistance R_{th j-a} = 416 K/W per device on FR4 board.

Technical Context

This dual NPN RET integrates two independent NPN transistors sharing no internal connection between bases or emitters - each with its own dedicated 4.7 kΩ pull-up bias resistor (R1) to base and no second resistor (R2 = open). The device operates as a discrete logic-level switch pair, eliminating external bias components for standard TTL/CMOS drive applications.

It supports reflow-only soldering per JEDEC J-STD-020, with absolute maximum ratings including ±50 V V_CBO/V_CEO, ±5 V V_EBO, and 150 °C junction temperature. Thermal performance is specified for single-sided FR4 PCB mounting, with per-device P_tot = 300 mW and R_{th j-a} = 416 K/W.

Key Specifications

Pinout & Package

Package: SOT363 (SC-88), plastic surface-mounted, 6-lead, 2.2 mm × 1.35 mm footprint, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMD6 and PEMH7, PUMH7 offers optimal balance of low-input-resistance drive compatibility, minimal PCB area, and production-proven reliability in consumer-grade SMT assembly - making it preferred for high-volume, space-sensitive digital interface applications.

Availability

PUMH7 is available at Aetrix Electronics and suitable for LED indicator driver, microcontroller GPIO expander, and IC input control applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for PUMH7 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

PUMH7 belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to reduce component count and simplify digital interface circuitry in high-density PCB designs.

FAQ

What is the function of R2 being 'open' in PUMH7?

R2 = open means no internal resistor connects the base to emitter of either transistor. This preserves standard NPN switching behavior - enabling use in active-low configurations where base-emitter shorting would cause unintended conduction or leakage. It avoids compromising V_EBO rating or introducing unpredictable turn-off delays.

Can PUMH7 replace discrete BC847 + base resistors in existing designs?

Yes - PUMH7 directly replaces one BC847 plus its 4.7 kΩ base resistor per channel. Pin mapping differs (e.g., BC847 SOT23 pin 1 = emitter, PUMH7 pin 1 = emitter of TR1), so PCB layout must be updated. Electrical behavior matches closely: h_FE, V_CEsat, and V_CEO are within 10% of BC847B specifications at equivalent test conditions.

Is PUMH7 suitable for analog amplification?

No - PUMH7 is optimized for digital switching, not linear amplification. Its built-in bias resistors fix DC operating points, and h_FE variation (200–330) and lack of emitter degeneration make gain unstable. For amplification, use unbiasd transistors like BC847 or PNP/NPN pairs without integrated resistors.

Does PUMH7 support lead-free reflow soldering?

Yes - PUMH7 is qualified for lead-free reflow per JEDEC J-STD-020. Peak temperature must not exceed 260 °C for ≤ 30 seconds. Reflow is the only recommended soldering method; wave or hand soldering may damage internal resistor elements or delaminate package layers.