Nexperia USA Inc. PBSS4240Y,115

Overview

PBSS4240Y,115 from NXP Semiconductors is a 40 V low V_CE(sat) NPN transistor in SOT363 (SC-88) package, rated for 2 A DC collector current and 3 A peak current, with typical V_CE(sat) of 70 mV at I_C = 500 mA / I_B = 50 mA, used in battery-powered motor drivers and DC/DC converter switching stages.

For engineers reviewing the PBSS4240Y,115 datasheet, PBSS4240Y,115 pinout, PBSS4240Y,115 application, or PBSS4240Y,115 equivalent, this device serves as a high-current, low-saturation-voltage switch optimized for thermal efficiency in compact portable power systems where heat dissipation and board space are critical constraints.

Technical Context

This NPN transistor employs a low-saturation-voltage silicon die architecture enabling R_CE(sat) < 200 mΩ at I_C = 500 mA, reducing conduction losses in high-duty-cycle switching applications. Its h_FE ranges from 300–470 across 100 mA–2 A collector currents, supporting stable current gain under varying load conditions.

The SOT363 package integrates four collector terminals (pins 1,2,5,6), one base (pin 3), and one emitter (pin 4), delivering enhanced thermal performance via multiple collector pads and low thermal resistance (R_{th j-a} = 291 K/W with 1 cm² copper pad), suitable for high-power-density PCB layouts.

Key Specifications

Pinout & Package

SOT363 (SC-88) plastic surface-mount package with six leads, featuring four parallel collector terminals (pins 1, 2, 5, 6) for reduced bond-wire resistance and improved current sharing, plus dedicated base (pin 3) and emitter (pin 4) connections.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low V_CE(sat) NPN transistor applications.

Compared with NSS40201MR6T1G and DXTN20010P5-7, PBSS4240Y,115 delivers the lowest V_CE(sat) and highest f_T, making it optimal for thermally constrained, medium-frequency switching where conduction loss and dynamic response are prioritized.

Availability

PBSS4240Y,115 is available at Aetrix Electronics and suitable for battery management systems, DC/DC converters, and motor driver circuits requiring stable component supply with consistent parametric performance across production batches.

Supply support for PBSS4240Y,115 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

PBSS4240Y,115 belongs to NXP's low V_CE(sat) bipolar transistor product line, engineered specifically for high-efficiency, space-constrained power switching in portable and battery-operated equipment.

FAQ

What is the maximum allowable junction temperature for PBSS4240Y,115?

The absolute maximum junction temperature (T_j) is 150 °C, as specified in the Limiting Values table. Operation above this temperature risks permanent degradation of the silicon die and bond wires. Derating is required above 25 °C ambient, especially when using the standard footprint (R_{th j-a} = 463 K/W).

Can PBSS4240Y,115 replace a SOT223 transistor directly on the same PCB?

No - PBSS4240Y,115 uses SOT363 (SC-88), a 6-pin 2×3 mm package, whereas SOT223 is a 4-pin 6.7×3.7 mm package with different pad layout and thermal pad requirements. Mechanical replacement requires PCB redesign, though functional equivalence exists in switching performance.

What is the recommended base resistor value for driving PBSS4240Y,115 at 1 A collector current?

At I_C = 1 A and minimum h_FE = 300, required I_B ≥ 3.3 mA. With V_BE(sat) ≈ 1.1 V and 3.3 V GPIO, R_B = (3.3 V − 1.1 V) / 3.3 mA ≈ 670 Ω. A standard 680 Ω resistor ensures full saturation while limiting base power dissipation to <2.5 mW.

Is there a PNP complement available for PBSS4240Y,115?

Yes - PBSS5240Y is the designated PNP complement, sharing identical SOT363 package, 40 V rating, and matched low V_CE(sat) performance. It features symmetric pinout (emitter on pin 3, base on pin 4) and is qualified for complementary pair use in H-bridge and dual-rail switching designs.