Nexperia USA Inc. PUMB4,115

Overview

PUMB4 from Nexperia is a dual PNP resistor-equipped transistor (RET) in SOT363 (SC-88) package, configured as two independent PNP transistors with integrated 10 kΩ base bias resistors (R1) and open R2 terminals. It delivers −50 V VCEO, −100 mA IO per transistor, and −150 mV VCEsat at IC = −10 mA/IB = −0.5 mA, enabling compact digital logic interface and low-current peripheral driving in space-constrained PCBs.

For engineers reviewing the PUMB4 datasheet, PUMB4 pinout, PUMB4 application, or PUMB4 equivalent, this device serves as a drop-in replacement for discrete PNP pairs in level-shifting, bus buffering, and microcontroller I/O conditioning-where simplified BOM, reduced placement steps, and guaranteed bias network matching are critical selection criteria.

Technical Context

The PUMB4 integrates two isolated PNP transistors sharing no internal connection between collector-emitter paths; each has its own dedicated 10 kΩ input resistor (R1) tied to base, while R2 remains unconnected (open). This architecture eliminates external bias components and ensures consistent turn-on behavior across temperature.

It operates within −65 °C to +150 °C ambient range, supports reflow-only soldering, and exhibits 416 K/W junction-to-ambient thermal resistance per device on FR4 PCB-enabling reliable operation in thermally dense industrial control modules and automotive body electronics without forced cooling.

Key Specifications

Pinout & Package

Package: SOT363 (SC-88), plastic surface-mounted, 6-lead, 2.2 mm × 1.8 mm footprint, 0.65 mm pitch, 0.1 mm max height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSVDU2D143XZT1G and EMB12P, PUMB4 uniquely balances dual-channel integration, 0.65 mm pitch compatibility, −150 mV VCEsat, and 416 K/W thermal resistance-making it optimal for high-density industrial I/O modules where channel pairing and thermal margin are co-critical.

Availability

PUMB4 is available at Aetrix Electronics and suitable for industrial I/O expansion, automotive body control modules, and consumer appliance logic interfacing requiring stable component supply and long-term manufacturing continuity.

Supply support for PUMB4 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 leader in high-volume production of discrete semiconductors, specializing in automotive-grade reliability, AEC-Q101 qualified devices, and scalable packaging for industrial and consumer markets.

PUMB4 belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in digital interface circuits-reducing assembly cost and improving functional consistency across production batches.

FAQ

What is the maximum operating temperature for PUMB4?

The PUMB4 supports junction temperatures up to 150 °C and ambient operating temperatures from −65 °C to +150 °C. Its thermal resistance is 416 K/W per device on standard FR4, so at 25 °C ambient, full 300 mW dissipation is permissible without exceeding Tj = 150 °C.

Can PUMB4 be used as a high-side switch for 12 V loads?

Yes-each PNP transistor supports −50 V VCEO and −100 mA continuous current, making it suitable for 12 V high-side switching with appropriate base drive. The integrated 10 kΩ R1 resistor requires ~1.2 mA base current from a 3.3 V logic source to ensure saturation, which is within typical MCU GPIO sink limits.

Is there a complementary NPN/NPN version of PUMB4?

Yes-the PUMD4 is the NPN/NPN complement in the same SOT363 package, with identical R1 = 10 kΩ bias resistors and matching pinout. It shares the same thermal and electrical specifications except polarity, enabling symmetrical design of push-pull or differential interface stages.

Does PUMB4 require external decoupling capacitors?

No-PUMB4 does not integrate any active circuitry requiring bypassing. However, for high-speed switching (>1 MHz), a 100 nF ceramic capacitor placed near the VCC connection point of the driven load improves transient response and reduces ground bounce in shared PCB return paths.