Nexperia USA Inc. PUMD2-QX

Overview

PUMD2-QX from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP silicon bipolar junction transistor in a single SOT363-3 (SC-88) package, with built-in bias resistors R1 = 22 kΩ and R2 = 22 kΩ per channel, rated for 50 V V_CEO and 100 mA output current per transistor, commonly used in low-current digital interface buffering and automotive signal conditioning circuits.

For engineers reviewing the PUMD2-QX datasheet, PUMD2-QX pinout, PUMD2-QX application, or PUMD2-QX equivalent, this device serves as a space- and BOM-optimized replacement for discrete NPN+PNP pairs in level-shifting, logic interfacing, and peripheral driver stages where AEC-Q101 qualification and thermal robustness up to 150 °C junction temperature are required.

Technical Context

This dual RET implements complementary NPN/PNP switching with integrated base bias networks-R1 connects input to base, R2 connects base to emitter-enabling direct TTL/CMOS-level drive without external resistors. Each transistor operates independently with separate collector, base (via R1), and emitter (GND) terminals.

The device supports bidirectional logic translation: TR1 (NPN) sinks current when driven high (VI(on) = 1.7–2.5 V), while TR2 (PNP) sources current when driven low (VI(off) ≤ 0.8 V). Thermal resistance is 417 K/W (per device, FR4 PCB), supporting continuous operation at ambient temperatures up to +150 °C with derated power dissipation.

Key Specifications

Pinout & Package

SOT363-3 (SC-88/TSSOP6) surface-mount plastic package with 6 leads, 0.65 mm pitch, 2.2 × 1.35 mm footprint, and exposed pad not present; JEDEC-compliant for reflow and wave soldering per Figures 18–19.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMH1-Q and PUMB1-Q, PUMD2-QX uniquely delivers true complementary drive in one package-enabling compact push-pull outputs, bidirectional level translation, and reduced layout complexity where both sourcing and sinking are required per signal path.

Availability

PUMD2-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input modules, and USB-C power management systems requiring stable component supply, AEC-Q101 traceability, and long-term production continuity.

Supply support for PUMD2-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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PUMD2-QX belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to reduce system-level component count and improve reliability in digital interface and signal conditioning applications across harsh-environment electronics.

FAQ

What is the maximum operating temperature for PUMD2-QX?

The PUMD2-QX has a maximum junction temperature (T_j) of 150 °C and an ambient operating range of −55 °C to +150 °C. When mounted on a standard FR4 PCB, its thermal resistance is 417 K/W, allowing full 100 mA output current up to 85 °C ambient; above that, power must be derated per Figure 1 in the datasheet.

Can PUMD2-QX replace two separate SOT23 transistors?

Yes-PUMD2-QX replaces one NPN and one PNP transistor plus four external bias resistors in a single SOT363-3 package. Its pinout (I1/O1/GND1 and I2/O2/GND2) maps directly to discrete implementations, reducing PCB area by ~40% and eliminating placement and soldering steps for four passive components.

Is the R1/R2 ratio truly 1:1, and why does it matter?

Yes-the R2/R1 ratio is specified as 0.8–1.2 (typical 1.0), meaning both resistors are tightly matched at 22 kΩ ±30%. This matching ensures consistent input threshold behavior between NPN and PNP sections, critical for balanced switching in push-pull or differential logic interfaces where skew must be minimized.

Does PUMD2-QX support 1.8 V logic input drive?

No-PUMD2-QX requires minimum VI(on) = 1.7 V (TR1) and maximum VI(off) = 1.1 V (TR2) for reliable switching, making it unsuitable for direct 1.8 V logic drive. It is optimized for 3.3 V and 5 V systems; for 1.8 V interfaces, a level shifter or logic buffer must precede the RET inputs.