Nexperia USA Inc. PBSS5112PAP,115

Overview

PBSS5112PAP from Nexperia is a dual PNP low V_CEsat (BISS) transistor in a DFN2020-6 (SOT1118) package, designed for high-efficiency load switching with −120 V V_CEO, −1 A continuous I_C, and 440 mΩ R_CEsat at −500 mA/−50 mA drive. It serves as a compact, thermally enhanced power switch in battery-powered and automotive power management circuits.

For engineers reviewing the PBSS5112PAP datasheet, PBSS5112PAP pinout, PBSS5112PAP application, or PBSS5112PAP equivalent, key selection criteria include its AEC-Q101 qualification, dual-transistor topology enabling independent control of two loads, and ultra-low saturation resistance critical for minimizing conduction loss in 12–48 V systems.

Technical Context

This device integrates two matched PNP BISS transistors on a single die in a thermally optimized DFN2020-6 package, supporting independent emitter-base-collector biasing per channel. Its architecture delivers high h_FE (25 typ. at −500 mA) and fast switching (t_on = 260 ns, t_off = 560 ns) under pulsed conditions with δ ≤ 0.02.

Thermal performance is defined by R_th(j-sp) = 30 K/W to solder point and R_th(j-a) as low as 86 K/W on 4-layer PCBs with 70 µm copper and collector pad enhancement-enabling sustained −1 A operation without forced cooling in space-constrained designs.

Key Specifications

Pinout & Package

DFN2020-6 (SOT1118) is a leadless, thermally enhanced plastic package measuring 2.0 × 2.0 × 0.65 mm with exposed thermal pad. Its ultra-thin profile and symmetric layout support high-density PCB routing and automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual PNP switching applications.

Compared with PBSS4112PANP and ZXTDA9T8, PBSS5112PAP uniquely combines −120 V blocking, AEC-Q101 qualification, and 440 mΩ R_CEsat in a 2 mm² footprint-making it the sole option for dual high-side switching in harsh-environment 48 V systems.

Availability

PBSS5112PAP is available at Aetrix Electronics and suitable for automotive body electronics, USB-C power delivery systems, and industrial battery management requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PBSS5112PAP 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

PBSS5112PAP belongs to Nexperia's BISS transistor product line, engineered specifically for high-current, low-loss switching in space-constrained and thermally demanding applications-including automotive power distribution and portable equipment power management.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The absolute maximum junction temperature (T_j) is 150 °C per the datasheet Limiting Values table. Continuous operation at this temperature requires PCB thermal design achieving R_th(j-a) ≤ 86 K/W (e.g., 4-layer board with 70 µm copper and 1 cm² collector pad), limiting ambient temperature to ≤ 64 °C at full −1 A per channel.

Can PBSS5112PAP replace a mechanical relay in a 24 V DC load application?

Yes-its −120 V V_CEO and −1 A I_C rating exceed typical 24 V relay coil and contact requirements. With R_CEsat = 440 mΩ, conduction loss is just 11 mW at 500 mA, versus relay coil power of 300–600 mW. No bounce, no arcing, and 10× faster switching enable digital control unattainable with electromechanical relays.

Is the DFN2020-6 package compatible with standard reflow profiles?

Yes-the DFN2020-6 (SOT1118) package is qualified for IPC/JEDEC J-STD-020D-compliant lead-free reflow. Peak temperature must not exceed 260 °C for ≤ 30 seconds, with ramp rates ≤ 3 °C/s. The recommended solder paste stencil aperture is 0.49 × 0.49 mm per pad, matching the land pattern in Figure 21 of the datasheet.

How does the dual-transistor structure affect PCB layout compared to two discrete SOT23 devices?

The integrated dual structure eliminates two separate footprints and associated routing congestion. Critical high-current paths (C1/E1 and C2/E2) share the same thermal pad, simplifying thermal relief design. However, base traces (B1/B2) must be kept short and separated to prevent crosstalk, and the exposed pad must be solidly connected to a dedicated internal ground plane layer via ≥4 thermal vias.