Nexperia USA Inc. PUMH2-QX

Overview

PUMH2-QX from Nexperia is a dual NPN resistor-equipped transistor (RET) in SOT363-3 (SC-88) package, rated for 50 V V_CEO, 100 mA per transistor output current, with integrated 47 kΩ input bias resistors (R1 = R2 = 47 kΩ) and AEC-Q101 qualification. It functions as a compact, pre-biased logic-level switch pair for digital signal routing and IC input control in space-constrained automotive and industrial PCBs.

For engineers reviewing the PUMH2-QX datasheet, PUMH2-QX pinout, PUMH2-QX application, or PUMH2-QX equivalent, this device is selected for low-component-count digital switching where built-in biasing eliminates external resistors, reduces layout area, and supports automotive-grade reliability without discrete bias network design.

Technical Context

This double RET integrates two matched NPN transistors with identical on-chip base bias networks-each featuring R1 = 47 kΩ (input resistor) and R2 = 47 kΩ (base-emitter feedback resistor), yielding an R2/R1 ratio of 1.0 (typ). The structure enables direct TTL/CMOS-compatible drive with VI(on) = 1.6 V (typ) at IC = 2 mA and VI(off) = 1.2 V (typ) at IC = 100 µA.

Each transistor delivers h_FE ≥ 80 at V_CE = 5 V, I_C = 5 mA, and maintains V_CE(sat) ≤ 150 mV at I_C = 10 mA / I_B = 0.5 mA. Thermal resistance is 417 K/W (per device, FR4 PCB), supporting operation up to T_j = 150 °C with 300 mW total power dissipation at T_amb = 25 °C.

Key Specifications

Pinout & Package

SOT363-3 (SC-88/TSSOP6) plastic surface-mount package: 2.2 mm × 1.35 mm footprint, 0.65 mm pitch, 0.95 mm max height, designed for reflow soldering on FR4 PCBs with standard 0.5 mm pad width.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSVD2001MW6T1G and EMH2T2R, PUMH2-QX uniquely combines AEC-Q101 qualification, matched 47 kΩ biasing, and ≤150 mV V_CE(sat)-making it the only option among the three qualified for automotive body control units requiring both reliability and low-loss switching.

Availability

PUMH2-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O conditioning, LED driver modules, and microcontroller GPIO expansion requiring stable component supply across multi-year production cycles.

Supply support for PUMH2-QX 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-enhancing components-MOSFETs, diodes, bipolar transistors, ESD protection, and logic devices-with manufacturing rooted in process technology and application-driven design.

PUMH2-QX belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in automotive and industrial digital interface circuits while ensuring AEC-Q101 compliance and board-space savings.

FAQ

Is PUMH2-QX pin-compatible with PUMH2,115?

Yes-PUMH2-QX uses the same SOT363-3 (TSSOP6) package and identical pin assignment (GND1-I1-O2-GND2-I2-O1) as PUMH2,115. Both share identical marking layout and thermal footprint, enabling drop-in replacement in existing designs without layout changes.

What is the maximum operating temperature for continuous use?

PUMH2-QX supports continuous operation up to T_amb = 125 °C when mounted on a standard FR4 PCB with single-sided 35 μm copper, based on its 150 °C junction limit and 417 K/W per-device R_th(j-a). Derating begins above 25 °C ambient at 3.6 mW/°C.

Can PUMH2-QX drive a 5 V relay coil directly?

No-it is rated for 100 mA per channel and 50 V V_CEO, but typical 5 V relay coils draw 70–120 mA with inrush peaks exceeding 200 mA. Use only with relays specifying ≤80 mA hold current and include flyback diode protection externally.

Does the R2/R1 ratio affect switching speed?

Yes-the 1.0 R2/R1 ratio provides optimal balance between turn-on speed and leakage suppression. Lower ratios increase base current and reduce propagation delay but raise off-state leakage; PUMH2-QX's 1.0 ratio yields t_on ≈ 35 ns and t_off ≈ 120 ns at I_C = 10 mA, per Nexperia characterization data.