Nexperia USA Inc. PUMD2,165

Overview

PUMD2 from Nexperia is a resistor-equipped double transistor (RET) integrating one NPN and one PNP silicon bipolar transistor with built-in 22 kΩ input bias resistors (R1 = R2) in a single SOT363-3 (SC-88) package. It delivers 100 mA per transistor, supports ±50 V collector-emitter voltage, and serves as a compact logic-level interface driver in space-constrained digital control circuits.

For engineers reviewing the PUMD2 datasheet, PUMD2 pinout, PUMD2 application, or PUMD2 equivalent, this device is selected for low-current peripheral interfacing where reduced component count, simplified base-drive design, and dual-polarity switching capability are critical - especially in I/O expansion, level translation, and discrete logic replacement.

Technical Context

The PUMD2 implements two monolithically integrated bipolar transistors - TR1 (NPN) and TR2 (PNP) - each with dedicated on-chip base bias resistors (R1 = R2 = 22 kΩ, tolerance ±30%). Its complementary topology enables push-pull or dual-signal control without external resistors, reducing PCB footprint and assembly cost.

Each transistor operates independently with verified DC current gain (hFE ≥ 60 at IC = 5 mA), saturation voltage ≤ 150 mV (IC = 10 mA, IB = 0.5 mA), and transition frequencies of 230 MHz (NPN) and 180 MHz (PNP), supporting high-speed digital switching up to ~10 MHz in buffered gate drive or signal routing applications.

Key Specifications

Pinout & Package

SOT363-3 (SC-88) 6-pin surface-mount plastic package with 0.65 mm pitch, 2.2 mm × 1.35 mm body size, and thermal resistance R_th(j-a) = 417 K/W (per device on FR4 PCB).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMD2, PUMH1 and PUMB1 offer polarity-specific duplication but lack the NPN/PNP complementarity essential for push-pull, bidirectional, or mixed-sourcing/sinking tasks - making PUMD2 uniquely suited for interface consolidation where both output polarities are required in one footprint.

Availability

PUMD2 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller I/O expansion, logic-level translation, and discrete gate drive applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for PUMD2 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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The PUMD2 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, designed specifically to replace general-purpose transistors in digital interface circuits by integrating biasing networks and optimizing for PCB area reduction and assembly efficiency.

FAQ

What is the maximum operating temperature for PUMD2?

The PUMD2 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 (single-sided, 35 µm copper), its total power dissipation is rated at 300 mW at T_amb ≤ 25 °C, derating linearly above that per the published curve.

Can PUMD2 be used with 1.8 V logic inputs?

No - the VI(on) threshold is specified at 1.7 V (typical) for TR1 (NPN) and −1.7 V (typical) for TR2 (PNP), but guaranteed operation requires ≥2.5 V (NPN) or ≤−2.5 V (PNP) for reliable turn-on. At 1.8 V, h_FE drops significantly and V_CE(sat) increases, risking incomplete saturation and excessive power dissipation.

Is PUMD2 automotive qualified?

No - the PUMD2 is not AEC-Q101 qualified and is designated for industrial and consumer applications only. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are unsuitable for safety-critical, life-support, or automotive systems without additional validation by the customer.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 ratio is tightly controlled at 0.8–1.2 (typical = 1.0), ensuring matched base current injection between TR1 and TR2. This balance maintains symmetrical turn-on characteristics and prevents latch-up or shoot-through in push-pull configurations where both transistors may briefly conduct simultaneously during signal transitions.