Nexperia USA Inc. PBHV9414Z-QX

Overview

PBHV9414Z-QX from Nexperia is a PNP high-voltage low V_CEsat transistor in SOT223 (SC-73) package, rated for −140 V V_CEO, −4 A continuous I_C, and 100–150 mΩ R_CEsat. It delivers high h_FE (35–50 at −4 A) and −420 to −550 mV V_CEsat at −4 A/−400 mA drive, enabling efficient switching in automotive LED drivers and SMPS output stages.

For engineers reviewing the PBHV9414Z-QX datasheet, PBHV9414Z-QX pinout, PBHV9414Z-QX application, or PBHV9414Z-QX equivalent, key selection criteria include verified −140 V blocking capability, low saturation resistance under high-current pulsed conditions, AEC-Q101 qualification, and thermal performance on FR4 PCBs with 6 cm² collector pad.

Technical Context

This device operates as a medium-power PNP switching transistor optimized for high-voltage DC-DC conversion and load switching where low conduction loss and robust avalanche margin are required. Its −180 V V_CBO rating and −100 nA I_CBO at −150 V ensure stable operation in noisy automotive environments.

The transistor features symmetric dual-collector terminals (Pins 2 & 4) for enhanced current handling and thermal spreading, and its R_th(j-sp) of 16 K/W enables direct solder-point thermal coupling to PCB copper. Pulse-tested V_CEsat and h_FE data are specified at δ ≤ 0.02 and t_p ≤ 300 µs, confirming suitability for PWM-driven applications.

Key Specifications

Pinout & Package

SOT223 (SC-73) plastic surface-mount package with 4 leads, 2.3 mm pitch, and integrated heatsink tab (Pin 2 & Pin 4 both connected to collector). Dimensions: 6.5 mm × 3.5 mm × 1.65 mm body; thermal pad optimized for soldering to ≥1 cm² copper area.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PHPT60303SQ and BCP56-16Q, PBHV9414Z-QX provides 75% higher blocking voltage and 3× higher continuous current in the same footprint, making it the sole option among these three qualified for 24 V commercial vehicle SMPS and high-brightness LED drivers.

Availability

PBHV9414Z-QX is available at Aetrix Electronics and suitable for automotive LED drivers, LCD backlighting modules, and 24 V SMPS designs requiring stable component supply, AEC-Q101 compliance, and proven thermal performance on FR4 PCBs.

Supply support for PBHV9414Z-QX 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 consumer markets.

PBHV9414Z-QX belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for automotive-grade power switching applications demanding robustness, low conduction loss, and seamless integration into thermally constrained PCB layouts.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current is −500 mA per datasheet Table 5. However, for continuous DC operation at −4 A collector current, the recommended base drive is −400 mA (IC/IB = 10) to maintain saturation while avoiding excessive base power dissipation. Exceeding −400 mA does not improve V_CEsat meaningfully but increases thermal stress on the base region.

Can PBHV9414Z-QX be used in linear regulator applications?

Yes - its −140 V V_CEO and 1.35 W P_tot (with 6 cm² copper) support linear regulation from 24 V down to 5 V at up to 1 A. However, thermal design must account for worst-case power dissipation (e.g., 19 W at 24 V→5 V/1 A), requiring substantial heatsinking beyond the SOT223 pad alone.

Is the SOT223 thermal pad electrically isolated?

No - the metal tab (connected to Pins 2 and 4) is electrically tied to the collector. It must be routed to collector potential on the PCB and cannot be grounded or floated. This design maximizes thermal transfer but requires careful layout to avoid shorting to adjacent traces or planes.

How does PBHV9414Z-QX perform under transient thermal conditions?

At 1 ms pulse width and 2% duty cycle, Z_th(j-a) drops to ~125 K/W (Fig. 3), enabling −10 A peak current without exceeding T_j = 150 °C when mounted on 1 cm² copper. This makes it suitable for short-duration motor startup surges or LED strobe pulses without thermal runaway.