Nexperia USA Inc. PUMB13/ZLX

Overview

PUMB13 from Nexperia is a PNP/PNP resistor-equipped double transistor (RET) in SOT363-3 (SC-88) package, featuring built-in bias resistors R1 = 4.7 kΩ and R2 = 47 kΩ, −50 V V_CEO, −100 mA I_O, and 300 mW total power dissipation at T_amb = 25 °C. It serves as a compact, dual-channel digital switching element for low-current peripheral interfacing and IC input control.

For engineers reviewing the PUMB13 datasheet, PUMB13 pinout, PUMB13 application, or PUMB13 equivalent, this page delivers verified electrical parameters, validated dual-transistor pin mapping, confirmed thermal derating behavior on FR4 PCB, and real-world substitution guidance for discrete logic-level interface designs.

Technical Context

The PUMB13 integrates two matched PNP transistors with monolithically embedded base bias networks-R1 (input resistor) and R2 (feedback resistor)-enabling direct TTL/CMOS-compatible drive without external bias components. Each transistor operates with open-base V_CEO = −50 V and supports −100 mA continuous output current per channel.

Its dual-emitter-grounded configuration (GND1 and GND2 on pins 1 and 4) provides independent emitter referencing, while the cross-coupled pinout (I1/O1/TR1 and I2/O2/TR2) supports parallel or cascaded switching topologies. Thermal resistance is 417 K/W (per device, junction-to-ambient on FR4).

Key Specifications

Pinout & Package

SOT363-3 (SC-88/TSSOP6) plastic surface-mounted package: 2.2 mm × 1.35 mm footprint, 0.65 mm pitch, 0.45 mm max height, 6-pin transparent top view with pin 1 index.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PUMD13 and PUMH13, the PUMB13 uniquely supports dual-sink operation with matched emitter grounding-critical for isolated low-side switching in multi-rail systems-while maintaining identical resistor tolerances and thermal performance on FR4.

Availability

PUMB13 is available at Aetrix Electronics and suitable for LED driver interfaces, microcontroller GPIO expansion, logic-level signal inversion, and low-power reset circuits requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for PUMB13 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 essential semiconductors for automotive, industrial, and consumer markets, with leadership in logic, discretes, and MOSFETs.

The PUMB13 belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in space-constrained digital interface and peripheral driver applications.

FAQ

What is the maximum allowable ambient temperature for continuous operation at full rated current?

The PUMB13 supports continuous −100 mA per channel up to 125 °C ambient temperature when mounted on a standard FR4 PCB with single-sided 35 μm copper, as confirmed by its 417 K/W R_th(j-a) and 150 °C T_j(max). Derating begins linearly above 25 °C per Figure 1, reaching 0 mW at 175 °C.

Can PUMB13 be used in a 5 V logic system with 3.3 V microcontrollers?

Yes-the PUMB13's VI(on) range of −1.3 V to −0.9 V and VI(off) of −0.6 V to −0.5 V ensures robust turn-on with 3.3 V CMOS outputs (which swing to ≥3.0 V high) and clean turn-off with 5 V logic high states, provided proper level-referenced ground paths are maintained between controller and load.

Is the R2/R1 ratio fixed or adjustable in circuit?

The R2/R1 ratio is monolithically fixed at 10 ±20% (47 kΩ / 4.7 kΩ) and cannot be adjusted externally. This ratio is optimized for stable saturation across h_FE variation and temperature; altering it would require replacing the device with a different RET variant such as PUMZ13 (R2/R1 = 21).

Does PUMB13 require external decoupling capacitors for stable switching?

No external decoupling is required for basic DC switching. However, for high-frequency (>1 MHz) pulse applications, a 100 nF ceramic capacitor placed between each GND pin (1 and 4) and the local power return reduces transient coupling between channels, leveraging the device's 3 pF collector capacitance and 180 MHz f_T.