Nexperia USA Inc. PHPT61003PYX

Overview

PHPT61003PYX from Nexperia is a PNP high-power bipolar transistor in LFPAK56 (SOT669) package, rated for −100 V V_CEO, −3 A continuous collector current, and 25 W power dissipation on FR4 PCB with optimized thermal pad. It delivers 110–180 mΩ R_CEsat at −2 A/−200 mA drive and operates up to 175 °C junction temperature. It serves as a robust load switch in automotive body control modules requiring AEC-Q101 qualification and high-temperature reliability.

For engineers reviewing the PHPT61003PYX datasheet, PHPT61003PYX pinout, PHPT61003PYX application, or PHPT61003PYX equivalent, key selection criteria include its −100 V blocking capability, low saturation resistance under pulsed conditions, AEC-Q101 qualification, thermal performance on standard FR4, and compatibility with high-current linear-mode voltage regulation.

Technical Context

This PNP transistor uses epitaxial base technology to achieve stable DC current gain (h_FE = 10–40 at −3 A) and fast switching (t_on = 200 ns, t_off = 570 ns) under −12.5 V V_CC and −1 A I_C. Its low V_BEsat (−1.02 to −1.2 V at −2 A) enables efficient base drive in high-side configurations.

The device features three emitter terminals (Pins 1–3) and a single base (Pin 4), with the mounting base (Pin mb) electrically connected to the collector-enabling direct thermal coupling to heatsink planes. Its transient thermal impedance (Z_th(j-a)) supports pulsed operation up to 8 A peak with 0.02 duty cycle.

Key Specifications

Pinout & Package

Package: LFPAK56 (SOT669), plastic surface-mounted power package with exposed copper mounting base for enhanced thermal transfer. Dimensions: 4.41 × 3.62 × 1.20 mm (L × W × H), with 4 signal leads plus integral collector mounting base.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-power switching applications.

Compared with PHPT61003PYX, PHPT61003NY offers matched thermal and electrical specs in NPN form for complementary designs, while DMT6009LPS trades bipolar simplicity and linear-mode stability for lower R_DS(on) and zero gate current-but demands careful gate drive design and lacks AEC-Q101 validation.

Availability

PHPT61003PYX is available at Aetrix Electronics and suitable for automotive body control modules, industrial linear regulators, LED backlight power stages, and high-temperature load switches requiring stable component supply and long-term lifecycle support.

Supply support for PHPT61003PYX 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 specializing in high-performance, reliable discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.

PHPT61003PYX belongs to Nexperia's LFPAK high-power bipolar transistor product line, engineered specifically for space-constrained, thermally demanding automotive and industrial power switching applications where AEC-Q101 compliance and robust linear-mode operation are essential.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current (I_B) is −0.5 A per datasheet limiting values. For reliable continuous operation, base current should be limited to −200 mA-matching the test condition used for R_CEsat specification and ensuring thermal stability within the SOT669 package's dissipation limits.

Can PHPT61003PYX be used in linear (active) mode for voltage regulation?

Yes-its specified V_CE = −10 V, I_C = −3 A linear-mode characteristics, 175 °C T_j rating, and stable h_FE make it suitable for series pass regulation. Thermal design must account for P_tot = V_CE × I_C, with PCB copper area sized per Figure 1 derating curves for ceramic or FR4 substrates.

How does the triple-emitter configuration affect PCB layout?

The three emitter pins (1–3) must be routed with equal-length, low-inductance traces to a common node-typically a solid internal ground plane-to ensure balanced current sharing and minimize parasitic oscillation. Unequal trace lengths can cause current imbalance and localized heating, degrading reliability.

Is the mounting base (mb) electrically isolated from other terminals?

No-the mounting base is internally connected to the collector terminal. It must be treated as a live high-current node and soldered only to a dedicated collector copper pour. Any connection to chassis ground or other potentials will cause short-circuit failure unless explicitly designed as part of the collector return path.