Nexperia USA Inc. PUMD20,115

Overview

PUMD20 from Nexperia is an AEC-Q101-qualified NPN/PNP resistor-equipped double transistor (RET) in SOT363-3 (SC-88) package, rated for 50 V V_CEO, 100 mA output current per transistor, with integrated 2.2 kΩ input bias resistors (R1 = R2), used for compact digital logic interfacing and low-current peripheral control in automotive and industrial PCBs.

For engineers reviewing the PUMD20 datasheet, PUMD20 pinout, PUMD20 application, or PUMD20 equivalent, this device serves as a space-optimized, bias-resistor-integrated replacement for discrete NPN+PNP pairs in level-shifting, I/O buffering, and IC input driving where reduced BOM count and AEC-Q101 compliance are required.

Technical Context

The PUMD20 integrates two complementary silicon transistors - TR1 (NPN) and TR2 (PNP) - each with monolithically embedded base bias resistors (R1 = 2.2 kΩ, R2 = 2.2 kΩ) and matched R2/R1 ratio (0.8–1.2). It operates with V_CEO = 50 V and I_O = 100 mA per channel under T_amb ≤ 25 °C, supporting bidirectional signal conditioning without external bias networks.

Its thermal resistance is 416 K/W (per device, FR4 PCB), junction temperature rated to 150 °C, and features VI(on) = 1.6 V (typ) and VI(off) = 1.2 V (typ) at 25 °C - enabling reliable TTL/CMOS-compatible switching across −40 °C to +150 °C ambient range.

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) plastic surface-mounted 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 resistor-equipped transistor applications.

Compared with PUMH20 and PUMB20, the PUMD20 uniquely provides mixed-polarity switching in one package - enabling true complementary output stages without inter-channel timing mismatch or layout asymmetry, critical for clean signal transitions in bidirectional interfaces.

Availability

PUMD20 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input modules, and USB-C power delivery subsystems requiring stable component supply, AEC-Q101 assurance, and SMT-compatible miniaturization.

Supply support for PUMD20 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 PUMD20 belongs to Nexperia's Resistor-Equipped Transistor (RET) family, engineered specifically to replace legacy discrete transistor-resistor combinations in space-constrained, high-reliability digital interface applications.

FAQ

What is the maximum continuous power dissipation for PUMD20?

The PUMD20 has a per-device total power dissipation limit of 300 mW at T_amb ≤ 25 °C on FR4 PCB with single-sided copper. Derating begins linearly above 25 °C at 0.72 mW/°C, reaching zero dissipation at 150 °C ambient - consistent with its 150 °C junction rating and 416 K/W thermal resistance.

Can PUMD20 be used in 5 V logic systems with 3.3 V microcontrollers?

Yes. With VI(on) = 1.6 V (typ) and VI(off) = 1.2 V (typ), the PUMD20 reliably switches with 3.3 V CMOS outputs. Its 2.2 kΩ input resistors provide appropriate base current for full saturation at I_C ≤ 100 mA, and V_CE(sat) remains ≤150 mV - ensuring clean logic-level translation without external level shifters.

Is the R2/R1 ratio fixed or adjustable?

The R2/R1 ratio is fixed at 1.0 ±20% (0.8–1.2) per device, as confirmed in Table 1 and Table 7. This ratio is process-controlled during fabrication and not user-adjustable; it ensures matched biasing for both transistors and stable switching thresholds across temperature and voltage.

How does PUMD20 differ from standard dual transistors like BC847BDW?

Unlike BC847BDW - which requires four external bias resistors - the PUMD20 integrates R1 and R2 internally, reducing component count, PCB area, and assembly cost. It also carries AEC-Q101 qualification, whereas BC847BDW is commercial-grade only, and offers tighter VI(on)/VI(off) specs optimized for digital interface rather than analog amplification.