Nexperia USA Inc. PBSS4580PA,115

Overview

PBSS4580PA from Nexperia is an NPN low V_CEsat Breakthrough In Small Signal (BISS) transistor in a leadless SOT1061 (HUSON3) package, rated for 80 V V_CEO, 5.6 A continuous collector current, and 40–57 mΩ R_CEsat at I_C = 5.6 A / I_B = 280 mA. It serves as a high-efficiency power switch in battery-driven load-switching circuits with minimal PCB footprint and enhanced thermal dissipation via exposed collector pad.

For engineers reviewing the PBSS4580PA datasheet, PBSS4580PA pinout, PBSS4580PA application, or PBSS4580PA equivalent, this device is selected for high-current, low-saturation-voltage switching where thermal performance on FR4 PCBs and compact 2 × 2 × 0.65 mm packaging are critical design constraints.

Technical Context

This BISS transistor uses a proprietary low-saturation structure optimized for high DC current gain (h_FE = 240–425 at I_C = 0.5–1 A) and fast switching (t_on = 183 ns, t_off = 925 ns), enabling efficient operation in pulse-width modulated power control. Its exposed collector terminal provides direct thermal path to PCB copper, supporting up to 2.1 W total power dissipation with 6 cm² mounting pad on FR4.

The device operates across −55 °C to +150 °C ambient, with absolute maximum ratings including 80 V V_CEO/V_CBO, 7 A peak collector current (t_p ≤ 1 ms), and 600 mA base current - all validated under IEC 60134 limiting values framework.

Key Specifications

Pinout & Package

Package: SOT1061 (HUSON3), ultra-thin 2.0 × 2.0 × 0.65 mm leadless plastic package with exposed collector pad for thermal and electrical conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PBSS4580PA, DMT3005LPS-13 offers MOSFET-level efficiency but sacrifices 30 V blocking margin, while PBSS4041PAS,115 maintains identical packaging and BISS topology at reduced voltage-current capability - making it a direct drop-in for less demanding 24 V applications.

Availability

PBSS4580PA is available at Aetrix Electronics and suitable for load switching, battery management, and motor control applications requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for PBSS4580PA 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 discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.

PBSS4580PA belongs to Nexperia's BISS transistor product line, engineered specifically for high-efficiency, medium-power switching in space-constrained battery-operated and power-management systems.

FAQ

What is the maximum allowable junction temperature for PBSS4580PA?

The absolute maximum junction temperature (T_j) is 150 °C, as defined in IEC 60134 limiting values. Operation above this threshold risks permanent degradation of h_FE and R_CEsat. Thermal design must ensure T_j remains ≤150 °C under worst-case ambient and power dissipation conditions, using appropriate PCB copper area per Table 6 thermal characteristics.

Can PBSS4580PA be used in high-frequency PWM applications above 50 kHz?

Yes - with measured t_on = 183 ns and t_off = 925 ns, PBSS4580PA supports clean switching up to ~100 kHz PWM in motor control and DC-DC pre-regulator stages. However, switching losses increase significantly above 50 kHz due to minority-carrier storage time; gate-driven MOSFETs may be preferred for >200 kHz operation.

Is PBSS4580PA automotive qualified?

No - PBSS4580PA is not AEC-Q101 qualified. The datasheet explicitly states it is "non-automotive qualified" and unsuitable for safety-critical automotive applications. For automotive use, Nexperia's AEC-Q101-certified BISS transistors (e.g., PBSS4041PAS-Q) must be selected instead.

How does the exposed collector pad affect PCB layout and soldering?

The exposed collector (Pin 3) must be soldered to a dedicated thermal pad on the PCB, sized per datasheet recommendations (1–6 cm²). Reflow soldering is mandatory; hand-soldering risks insufficient thermal bond. Solder mask opening must match pad dimensions exactly to ensure full copper contact and avoid voiding that degrades thermal resistance.