Nexperia USA Inc. PUMD3-QH

Overview

PUMD3-QH from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP bipolar junction transistor in a single SOT363-3 (TSSOP6) package, with built-in bias resistors R1 = 10 kΩ and R2 = 10 kΩ, rated for 50 V V_CEO, 100 mA output current per transistor, and qualified to AEC-Q101 for automotive digital switching applications such as IC input control and load switching.

For engineers reviewing the PUMD3-QH datasheet, PUMD3-QH pinout, PUMD3-QH application, or PUMD3-QH equivalent, this device serves as a space- and cost-optimized alternative to discrete BC847-Q/BC857-Q pairs in automotive and industrial digital logic interface circuits where simplified biasing and reduced component count are critical.

Technical Context

The PUMD3-QH integrates two complementary transistors-TR1 (NPN) and TR2 (PNP)-each with monolithically embedded base bias resistors (R1 and R2), enabling direct logic-level drive without external resistors. Its dual-transistor topology supports push-pull, level-shifting, and complementary switching functions in compact PCB layouts.

Each transistor operates independently with verified DC current gain (h_FE ≥ 30 at I_C = 5 mA, V_CE = 5 V), low V_CE(sat) ≤ 100 mV at I_C = 10 mA/I_B = 0.5 mA (NPN), and matched R1/R2 ratio of 0.8–1.2, ensuring consistent turn-on behavior across temperature (−40 °C to +150 °C).

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) surface-mount plastic package with 0.65 mm lead pitch, 2.2 mm × 1.35 mm body size, and exposed pad-compatible footprint for thermal management on standard FR4 PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMH11-Q and PUMB11-Q, the PUMD3-QH uniquely provides mixed-polarity switching in one package-enabling true complementary output stages without board-level routing compromises or additional discrete components.

Availability

PUMD3-QH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer appliance control boards requiring stable component supply, AEC-Q101 compliance, and compact dual-transistor integration.

Supply support for PUMD3-QH 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.

The PUMD3-QH belongs to Nexperia's Precision Resistor-Equipped Transistor (RET) product line, designed specifically for space-constrained digital interface and load-switching applications in automotive and industrial environments where AEC-Q101 reliability and BOM simplification are mandatory.

FAQ

What is the maximum operating temperature for PUMD3-QH?

The PUMD3-QH has a maximum junction temperature (T_j) of 150 °C and an ambient operating range of −65 °C to +150 °C. Its thermal resistance is 417 K/W (junction-to-ambient, per device on FR4), allowing continuous operation at full 100 mA load up to approximately +100 °C ambient when mounted per standard footprint.

Can PUMD3-QH replace BC847-Q and BC857-Q simultaneously?

Yes-PUMD3-QH replaces one BC847-Q (NPN) and one BC857-Q (PNP) plus their four external base resistors. It matches their V_CEO (50 V), I_O (100 mA), and AEC-Q101 qualification while integrating R1/R2 = 10 kΩ resistors, reducing PCB area by >40% and eliminating placement and soldering steps for discrete bias components.

Is the R1/R2 ratio matched between the NPN and PNP sections?

Yes-the datasheet specifies R2/R1 = 1.0 ± 0.2 (0.8–1.2) for both transistors, verified under standardized test conditions (I₁ = 350 µA, I₂ = 450 µA for TR1; I₃ = −350 µA, I₄ = −450 µA for TR2). This ensures symmetrical turn-on thresholds and consistent switching behavior across polarity transitions.

Does PUMD3-QH support 3.3 V logic-level drive?

Yes-its VI(on) is 1.8–2.5 V (NPN) and −1.8 to −2.5 V (PNP) at I_C = 10 mA, fully compatible with 3.3 V CMOS logic outputs. VI(off) is 0.8–1.1 V (NPN) and −0.8 to −1.1 V (PNP), providing robust noise margin against false triggering in noisy automotive environments.