Nexperia USA Inc. PBHV9040Z-QX

Overview

PBHV9040Z-QX from Nexperia is a PNP high-voltage low-V_CEsat transistor in SOT223 (SC-73) package, rated for −500 V V_CESM, −0.25 A I_C, and −110 mV typical V_CEsat at I_C = −100 mA / I_B = −20 mA. It serves as a robust switching element in automotive motor management and high-intensity discharge (HID) front lighting circuits where high breakdown voltage and low conduction loss are critical.

For engineers reviewing the PBHV9040Z-QX datasheet, PBHV9040Z-QX pinout, PBHV9040Z-QX application, or PBHV9040Z-QX equivalent, this device is selected for high-voltage PNP switching with AEC-Q101 qualification, thermal performance on FR4 PCBs, and verified low saturation voltage under automotive ambient conditions (−55 °C to 150 °C).

Technical Context

This PNP bipolar junction transistor employs epitaxial base technology optimized for high-voltage blocking and low saturation voltage. Its V_CEO = −400 V and V_CESM = −500 V support operation in flyback and inductive load switching topologies with substantial voltage transients.

The device delivers h_FE = 100–200 at I_C = −50 mA and maintains usable gain down to I_C = −250 mA (h_FE ≥ 10), enabling stable current control in LED chain drivers and electronic ballasts. Thermal resistance R_th(j-sp) = 20 K/W (with 6 cm² collector pad) supports sustained 1.4 W dissipation at T_amb ≤ 25 °C.

Key Specifications

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with 4 leads, 2.3 mm pitch, and integrated heatsink tab (lead 4 is electrically connected to lead 2, both collectors). Dimensions: 6.5 mm × 3.5 mm × 1.65 mm body; mounting pad recommended for collector (6 cm²) to achieve full 1.4 W P_tot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PBHV8540Z-Q and PHPT60303SQ, PBHV9040Z-QX uniquely combines AEC-Q101 qualification, −500 V blocking, and −110 mV V_CEsat in a single PNP BJT-making it irreplaceable in high-voltage automotive and industrial high-side switching where bipolar drive simplicity and voltage margin are essential.

Availability

PBHV9040Z-QX is available at Aetrix Electronics and suitable for automotive motor management, HID front lighting, and electronic ballast applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.

Supply support for PBHV9040Z-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.

PBHV9040Z-QX belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for automotive and industrial switching applications demanding robust voltage tolerance, low conduction loss, and extended temperature operation.

FAQ

Is PBHV9040Z-QX pin-compatible with standard SOT223 PNP transistors?

Yes-PBHV9040Z-QX uses the standard SC-73 (SOT223) footprint with pins 1 (B), 2 (C), 3 (E), and 4 (C), matching JEDEC MO-178AB. Pin 2 and pin 4 are internally connected collectors, so PCB layout must accommodate dual-collector thermal bonding and avoid isolation between them.

What is the maximum safe operating frequency for PBHV9040Z-QX in switching applications?

Based on t_off = 1800 ns and t_on = 1819 ns, the device supports reliable operation up to approximately 250 kHz in hard-switched topologies. For higher frequencies, consider gate-drive optimization and thermal derating, especially above 85 °C ambient.

Does PBHV9040Z-QX require a base resistor when driven by a 3.3 V microcontroller GPIO?

Yes-a series base resistor is required to limit I_B. With V_BEsat ≈ −1.05 V and target I_B = −20 mA for optimal V_CEsat, a 110 Ω resistor is recommended when sinking from a 3.3 V GPIO (assuming 0.2 V saturation drop on the MCU output).

How does the thermal performance change if the 6 cm² collector pad is not implemented?

Without the 6 cm² copper pad, R_th(j-a) degrades from 89 K/W to 175 K/W (standard FR4 footprint), reducing maximum allowable P_tot from 1.4 W to ~0.7 W at 25 °C ambient-requiring significant derating or forced-air cooling above 350 mW dissipation.