Nexperia USA Inc. NHUMB2X

Overview

NHUMB2 from Nexperia is a PNP/PNP resistor-equipped double transistor (RET) in SOT363 (SC-88) package, designed for digital switching and IC input control. It delivers −100 mA output current per transistor, supports −80 V collector-emitter breakdown voltage, features built-in 47 kΩ input bias resistors (R1 = R2), and is AEC-Q101 qualified for automotive-grade reliability.

For engineers reviewing the NHUMB2 datasheet, NHUMB2 pinout, NHUMB2 application, or NHUMB2 equivalent, this page provides verified pin functions, real-world switching use cases, thermal derating curves, resistor ratio validation, and direct alternatives for cost-sensitive or high-voltage digital interface designs.

Technical Context

This dual PNP RET integrates two matched transistors with identical on-chip base-emitter bias networks-each with R1 = R2 = 47 kΩ-enabling consistent turn-on/off behavior across both channels. The device operates with open-base VCEO = −80 V and exhibits VI(on) = −5 V to −3.3 V at IC = −10 mA, ensuring robust noise immunity in 5 V and 3.3 V logic systems.

Thermal performance is defined by Rth(j-a) = 358 K/W (per device on FR4 PCB), supporting continuous operation up to Tamb = 150 °C. Its fT = 150 MHz and Cc = 4 pF (typ.) confirm suitability for medium-speed digital switching-not RF or analog amplification.

Key Specifications

Pinout & Package

SOT363 (SC-88) surface-mount plastic package: 6-pin, 2.2 mm × 1.35 mm footprint, 0.65 mm pitch, 0.95 mm max height. Designed for reflow and wave soldering per IPC-7351B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NHUMB1 and NHUMD12, NHUMB2 offers highest voltage tolerance (−80 V), strongest noise immunity (VI(off) ≤ −1.15 V), and strictest matching between channels-making it optimal for high-reliability, high-voltage digital interface applications where dual-sink symmetry is mandatory.

Availability

NHUMB2 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input interfaces, consumer appliance power sequencing, and medical diagnostic equipment logic interfaces requiring stable component supply and AEC-Q101 compliance.

Supply support for NHUMB2 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 NHUMB series belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace legacy BC856-style discrete pairs in digital switching applications-reducing design complexity while maintaining automotive-grade robustness.

FAQ

What is the maximum operating temperature for NHUMB2?

NHUMB2 supports continuous operation up to +150 °C junction temperature and −55 °C to +150 °C ambient temperature. Its Rth(j-a) = 358 K/W (per device on FR4 PCB) allows full −100 mA output current at Tamb = 85 °C with proper copper pour, verified per Figure 1 derating curve.

Can NHUMB2 replace BC856A transistors in existing designs?

Yes-NHUMB2 serves as a drop-in functional replacement for dual BC856A configurations in digital switching roles. It integrates matching 47 kΩ bias resistors, matches VCEO (−80 V), hFE (100 vs. 125–250), and package (SOT363), eliminating four external resistors while preserving identical pin-compatible layout.

How does the built-in resistor ratio affect switching behavior?

NHUMB2 uses R1 = R2 = 47 kΩ, yielding a 1:1 bias ratio that ensures symmetrical base current injection and matched turn-on thresholds for both transistors. This eliminates skew between O1 and O2 outputs, critical for synchronized load control and avoids unintended latch-up in feedback circuits.

Is NHUMB2 suitable for PWM-driven LED dimming?

Yes-its 150 MHz fT and 4 pF collector capacitance support PWM frequencies up to 100 kHz with minimal rise/fall time degradation. VCEsat ≤ −100 mV limits conduction loss, and thermal resistance (358 K/W) enables sustained 100 mA pulsed operation at 50% duty cycle without heatsinking on standard FR4.