Nexperia USA Inc. PUMD9,135

Overview

PUMD9 from Nexperia is an NPN/PNP resistor-equipped double transistor (RET) in SOT363-3 (SC-88) package, integrating two complementary transistors with built-in bias resistors R1 = 10 kΩ and R2 = 47 kΩ. It supports 50 V V_CEO, 100 mA output current per transistor, and operates across –65 °C to +150 °C ambient temperature - used for digital switching and IC input control in automotive and industrial PCBs.

For engineers reviewing the PUMD9 datasheet, PUMD9 pinout, PUMD9 application, or PUMD9 equivalent, this device serves as a space- and BOM-optimized replacement for discrete BC847/BC857 pairs in level-shifting, load switching, and logic interface circuits where bias network integration reduces layout complexity and assembly cost.

Technical Context

The PUMD9 integrates one NPN (TR1) and one PNP (TR2) transistor on a single die, each with dedicated base bias networks: TR1 uses R1 = 10 kΩ and R2 = 47 kΩ for current-limited drive; TR2 shares identical resistor values but configured for negative-polarity operation. Both transistors are rated for 50 V breakdown and exhibit h_FE ≥ 100 at I_C = 5 mA.

It delivers 100 mA continuous output per transistor with V_CE(sat) ≤ 100 mV at I_C = 5 mA / I_B = 0.25 mA (TR1) and comparable saturation performance for TR2 under symmetric negative conditions. Thermal resistance is 417 K/W (per device, FR4 PCB), enabling stable operation up to 150 °C junction temperature.

Key Specifications

Pinout & Package

SOT363-3 (SC-88/TSSOP6) plastic surface-mounted package: 2.2 mm × 1.35 mm footprint, 0.65 mm pitch, 0.95 mm max height, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMH9 and PUMB9, the PUMD9 uniquely integrates matched NPN and PNP elements with shared resistor tolerances, enabling true complementary operation in a single footprint - essential for compact, low-component-count digital interface designs requiring both sourcing and sinking capability.

Availability

PUMD9 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer appliance power sequencing requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.

Supply support for PUMD9 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 headquartered in Nijmegen, Netherlands, specializing in high-performance, energy-efficient logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.

The PUMD9 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in digital switching applications - prioritizing miniaturization, assembly efficiency, and thermal robustness in space-constrained designs.

FAQ

What is the maximum operating voltage for each transistor in the PUMD9?

The PUMD9 specifies V_CEO = 50 V for both the NPN (TR1) and PNP (TR2) transistors under open-base conditions. This rating applies individually to each transistor and is validated per IEC 60134 absolute maximum limits. Operation above 50 V risks permanent breakdown, especially at elevated temperatures or with fast transients.

Can the PUMD9 replace BC847 and BC857 transistors in existing designs?

Yes - the PUMD9 is explicitly positioned as a cost-saving alternative to BC847/BC857 pairs in digital applications. Its integrated R1/R2 network replicates typical biasing configurations, and its SOT363-3 footprint aligns with common dual-transistor layouts. Layout adaptation is minimal, primarily involving removal of four external resistors and verification of pin mapping per Table 2.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 ratio of 4.7 determines the internal feedback strength from collector to base, improving turn-off speed and reducing storage time compared to single-resistor RETs. This ratio stabilizes the operating point across h_FE variance and temperature drift, ensuring consistent saturation and faster recovery during high-frequency digital toggling up to ~1 MHz.

Is the PUMD9 qualified for automotive applications?

The PUMD9 is not AEC-Q200 qualified per its official Nexperia documentation. While it operates across –65 °C to +150 °C and is used in automotive body electronics, it lacks formal automotive qualification testing. For safety-critical or ASIL-relevant systems, engineers must perform full application-level validation and consult Nexperia's latest status at https://www.nexperia.com.