Nexperia USA Inc. PUMH1,115

Overview

PUMH1 from Nexperia is an NPN/NPN resistor-equipped double transistor (RET) in SOT363-3 (SC-88) package, integrating two matched transistors with built-in 22 kΩ input bias resistors (R1 = R2 = 22 kΩ) and R2/R1 ratio of 1.0. It delivers 100 mA per transistor output current, supports 50 V V_CEO, and operates across –55 °C to +150 °C ambient range - used for compact digital logic interfacing and low-current peripheral driving in space-constrained PCBs.

For engineers reviewing the PUMH1 datasheet, PUMH1 pinout, PUMH1 application, or PUMH1 equivalent, this page provides verified pin functions, thermal derating curves, DC current gain (h_FE ≥ 60 at I_C = 5 mA), saturation voltage (V_CE(sat) ≤ 150 mV), and on/off-state input voltage thresholds critical for level-shifting and bus-driving designs.

Technical Context

The PUMH1 integrates two independent NPN transistors with monolithically embedded base bias networks - each featuring a 22 kΩ input resistor (R1) and a matched 22 kΩ feedback resistor (R2), yielding a precise R2/R1 ratio of 1.0 (±20%). This configuration enables direct TTL/CMOS-compatible switching without external base resistors.

Its dual-transistor topology supports cross-coupled or parallel driver configurations; thermal resistance is 417 K/W (per device, FR4 PCB), and transition frequency f_T reaches 230 MHz at I_C = 10 mA - confirming suitability for high-speed digital signal conditioning up to ~10 MHz toggle rates.

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) plastic surface-mounted package: 1.3 mm × 2.2 mm footprint, 0.65 mm pitch, 0.95 mm max height, FR4-compatible reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSVD2001MUTAG and EMX11T2R, the PUMH1 uniquely offers matched dual-NPN topology with 100 mA per channel and 22 kΩ bias resistors - optimizing for non-inverting, high-current digital buffering where channel independence and thermal efficiency are prioritized.

Availability

PUMH1 is available at Aetrix Electronics and suitable for LED display drivers, microcontroller I/O expansion, optocoupler interface circuits, and industrial sensor signal conditioning requiring stable component supply and long-term obsolescence management.

Supply support for PUMH1 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, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The PUMH1 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to reduce design complexity and PCB area in digital interface and peripheral driver applications through integrated bias networks and compact packaging.

FAQ

What is the maximum operating temperature for PUMH1?

The PUMH1 is rated for continuous operation from –55 °C to +150 °C ambient temperature, with a maximum junction temperature of 150 °C. Its thermal resistance (R_th(j-a)) is 417 K/W when mounted on a standard FR4 PCB, enabling reliable performance in industrial control cabinets and under-hood automotive auxiliary modules without forced cooling.

Can PUMH1 replace discrete transistor + resistor combinations?

Yes - the PUMH1 replaces two NPN transistors plus four external bias resistors (two per channel). Its integrated R1 = R2 = 22 kΩ network provides predictable turn-on behavior, eliminates resistor placement errors, and reduces pick-and-place steps. Verified h_FE ≥ 60 and V_CE(sat) ≤ 150 mV ensure functional equivalence in 3.3 V/5 V logic-driven switching applications.

Is PUMH1 suitable for 24 V industrial I/O applications?

Yes - with V_CEO = 50 V and V_CBO = 50 V, the PUMH1 safely handles 24 V supply rails and transient spikes common in PLC and sensor interface circuits. Its –55 °C to +150 °C rating, 300 mW total power dissipation, and robust ESD tolerance (per AEC-Q101 stress testing methodology) make it appropriate for DIN-rail mounted industrial controllers.

How does the R2/R1 ratio affect circuit behavior?

The R2/R1 ratio of 1.0 ±20% sets the internal feedback factor that stabilizes base current and improves switching consistency across temperature and process variation. A ratio near unity ensures symmetrical turn-on characteristics between the two transistors, critical for matched timing in dual-channel drivers and prevents unintended latch-up in cascaded logic stages.