Nexperia USA Inc. PBSS4041NZ,115

Overview

PBSS4041NZ from Nexperia is an AEC-Q101-qualified NPN low V_CEsat transistor in SOT223 (SC-73) package, rated for 60 V V_CEO, 7 A continuous collector current, and 17.5 mΩ typical R_CEsat at 6 A/600 mA drive - deployed as a high-efficiency load switch in automotive power management circuits.

For engineers reviewing the PBSS4041NZ datasheet, PBSS4041NZ pinout, PBSS4041NZ application, or PBSS4041NZ equivalent, this device is selected for low-loss DC switching where thermal performance on FR4 PCBs, precise saturation voltage control, and automotive-grade reliability are critical design requirements.

Technical Context

This NPN transistor uses epitaxial planar die construction optimized for low-saturation operation under high-current pulsed and DC conditions. Its base-emitter junction supports robust 1 A peak base current, enabling fast turn-on with 105 ns t_on and 1220 ns t_off at I_C = 1 A, while maintaining h_FE ≥ 50 at 7 A.

The device achieves 17.5 mΩ typical R_CEsat by minimizing bulk and contact resistances, with thermal resistance R_th(j-a) as low as 50 K/W on ceramic PCB - directly enabling compact, fanless power stage designs in battery-driven motor and charging applications.

Key Specifications

Pinout & Package

SOT223 (SC-73) plastic surface-mount package with 4 leads, 2.3 mm pitch, 6.5 mm × 3.5 mm × 1.65 mm body, and integrated heatsink pad on lead 2 and 4 (collector terminals).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN low-V_CEsat transistor applications.

Compared with NSS40401MZ4T1G and DXT6011000000000, PBSS4041NZ uniquely delivers 60 V/7 A capability with AEC-Q101 certification and best-in-class 17.5 mΩ R_CEsat, making it the only option qualified for high-current automotive load switching without derating or parallel devices.

Availability

PBSS4041NZ is available at Aetrix Electronics and suitable for automotive load switching, battery-powered motor control, and USB-C PD charging circuits requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for PBSS4041NZ 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 discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

PBSS4041NZ belongs to Nexperia's low V_CEsat bipolar transistor product line, engineered specifically for high-current, thermally constrained DC switching applications where minimizing conduction loss and ensuring automotive-grade reliability are primary design goals.

FAQ

What is the maximum continuous collector current for PBSS4041NZ at 85 °C ambient?

At T_amb = 85 °C, PBSS4041NZ delivers 4.5 A continuous collector current when mounted on a 4-layer FR4 PCB with standard footprint (R_th(j-a) = 80 K/W). Derating follows the curve in Figure 1, where P_tot drops linearly from 2.6 W at 25 °C to 1.2 W at 85 °C.

Can PBSS4041NZ be used in high-frequency PWM applications above 100 kHz?

Yes - with t_on = 105 ns and t_off = 1220 ns, PBSS4041NZ supports PWM frequencies up to 300 kHz in hard-switched configurations. For optimal efficiency, use −50 mA reverse base drive to minimize storage time (t_s = 1125 ns) and reduce switching losses.

Is the SOT223 package thermally enhanced, and how should the collector pads be routed?

Yes - Pins 2 and 4 are both collector terminals connected to an internal thermal pad. Route them to ≥6 cm² of 35 µm copper on a single-layer FR4 PCB, or to inner-layer planes on 4-layer boards, to achieve R_th(j-a) ≤ 75 K/W and sustain full 7 A current without exceeding 150 °C junction temperature.

Does PBSS4041NZ have a PNP complement, and is it pin-compatible?

Yes - PBSS4041PZ is the designated PNP complement, sharing identical SOT223 package, pinout (B-C-E-C), and thermal characteristics. Both devices use the same PCB footprint and mounting guidelines, enabling symmetrical high-side/low-side switch design in H-bridge and dual-rail power stages.