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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. PBHV9540X-QF

Name: PBHV9540X-QF
Brand: Nexperia USA Inc.
SKU: PBHV9540X-QF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBHV9540X-QF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBHV9540X-QF.pdf

Description:: TRANS PNP 400V 0.5A SOT-89

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Product details

Overview

PBHV9540X-QF from Nexperia is a PNP high-voltage low-V_CEsat transistor in SOT89 package, rated for −400 V V_CEO, −0.5 A continuous I_C, and −250 mV typical V_CEsat at I_C = −200 mA / I_B = −40 mA. It serves as a robust switching element in high-voltage DC-DC stages, LED chain drivers, and automotive motor control circuits where low conduction loss and AEC-Q101 reliability are required.

For engineers reviewing the PBHV9540X-QF datasheet, PBHV9540X-QF pinout, PBHV9540X-QF application, or PBHV9540X-QF equivalent, this device is selected for high-voltage PNP switching with verified thermal performance on FR4 PCBs, confirmed AEC-Q101 qualification, and documented R_CEsat ≤ 2000 mΩ under pulsed conditions - critical for efficiency-critical ballast and HID lighting designs.

Technical Context

This PNP bipolar junction transistor operates with open-base collector-emitter breakdown of −400 V and supports peak pulsed current up to −1 A (t_p ≤ 1 ms). Its DC current gain (h_FE) ranges 140–450 at −20 mA I_C, maintaining ≥140 even at −100 mA I_C under pulsed conditions.

Thermal design is enabled by two defined mounting configurations: R_th(j-a) = 240 K/W on standard footprint and 83 K/W with 6 cm² collector pad - directly supporting power derating per Fig. 1. Switching performance includes t_on = 3710 ns and t_off = 1710 ns under specified test conditions (V_CC = −6.2 V, I_Bon = −10 mA, I_Boff = 20 mA).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−400 V - maximum safe blocking voltage with base open; enables use in 350 V DC bus applications with margin.
I_C	−0.5 A continuous - supports steady-state loads such as LED string current regulation or relay drivers.
V_CEsat	−250 mV typ. at I_C = −200 mA / I_B = −40 mA - reduces conduction loss to < 50 mW in saturated switch operation.
h_FE	140–450 at V_CE = −5 V, I_C = −20 mA - ensures reliable base drive design across temperature (−55 °C to 150 °C).
R_CEsat	≤ 2000 mΩ - defines on-resistance behavior for precision current-sense or low-loss switching in pulsed mode.
T_j max	150 °C - junction temperature limit aligned with AEC-Q101 automotive stress testing requirements.
P_tot	1.5 W with 6 cm² collector pad - enables >1 W dissipation in compact SOT89 layout without forced cooling.

Pinout & Package

SOT89 (SC-62) medium-power surface-mount plastic package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, flat leads optimized for thermal transfer via collector pad.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit terminal; connected to high-side rail or load return in high-side switch configurations.
2	Collector	Main current input; electrically and thermally tied to large copper pad for heat dissipation and low-inductance routing.
3	Base	Control input; requires negative bias relative to emitter to turn on; compatible with standard CMOS/TTL logic via level-shifting.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards.
Low V_CEsat	−250 mV typical enables < 50 mW conduction loss at 200 mA - critical for thermal management in enclosed lighting modules.
High V_CEO	−400 V rating supports direct interface with 350 V rectified AC lines or boost converter outputs without series stacking.
High h_FE at high I_C	h_FE ≥ 140 at −100 mA ensures stable saturation with modest base drive, reducing gate-driver complexity in discrete BJT solutions.
Thermally enhanced SOT89	83 K/W R_th(j-sp) with 6 cm² collector pad allows >1 W continuous operation - exceeds standard SOT89 limits by 2×.

Applications

Electronic Ballast for Fluorescent Lighting

LED Driver for LED Chain Module

Use Scenario: High-frequency resonant switching in magnetic or electronic ballasts driving T5/T8 lamps.

IC Role / Device Role / Timing Role: PNP high-side switch controlling lamp current path during half-cycle conduction.

Use Value: −400 V V_CEO withstands flyback spikes; low V_CEsat minimizes heating in sealed fixture environments.

Use Scenario: Constant-current switching regulator for 20–50 V LED chains in commercial signage or architectural lighting.

IC Role / Device Role / Timing Role: Saturated PNP pass element in linear or quasi-resonant current sink topology.

Use Value: R_CEsat ≤ 2000 mΩ ensures < 40 mW loss at 150 mA - extends thermal lifetime in thermally constrained PCB layouts.

LCD Backlighting (CCFL/LED)

Automotive Motor Management

Use Scenario: Inverter-stage switching for cold cathode fluorescent lamp (CCFL) backlighting in industrial displays.

IC Role / Device Role / Timing Role: High-voltage PNP switch in Royer or push-pull oscillator driving step-up transformer primary.

Use Value: f_T = 65 MHz supports clean square-wave generation up to 100 kHz; −7 V V_EBO prevents base-emitter breakdown during transformer ringing.

Use Scenario: Load switching for radiator fan, HVAC blower, or window lift motors in 12 V/24 V vehicle systems.

IC Role / Device Role / Timing Role: AEC-Q101-qualified PNP driver in high-side configuration for PWM-controlled motor current.

Use Value: T_j = 150 °C rating and −55 °C to +150 °C ambient range ensure operation across engine bay thermal extremes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
PBHV9560X-Q	Higher V_CEO (−600 V), same SOT89 package, slightly lower h_FE (120–400)	Better suited for 480 V AC-input SMPS or industrial HV DC links where extra voltage margin is mandatory	Select when system transients exceed −400 V or long-term reliability at >90% V_CEO rating is required
PHPT60603PX	PNP MOSFET (not BJT); −60 V V_DSS, 3 A I_D, logic-level gate; TO-252 package	Replaces BJT in low-voltage, high-current motor drives where gate drive simplicity and zero gate current are prioritized	Choose only if voltage requirement drops below −100 V and higher current capability (>0.5 A) is needed with reduced drive complexity

Compared with PBHV9540X-QF, PBHV9560X-Q trades minor h_FE reduction for 50% higher voltage headroom, while PHPT60603PX abandons bipolar architecture entirely for MOSFET advantages - making PBHV9540X-QF the optimal balance of voltage, thermal, and drive compatibility in 400 V-class PNP switching.

Availability

PBHV9540X-QF is available at Aetrix Electronics and suitable for electronic ballast, LED chain driver, and automotive motor management applications requiring stable component supply, AEC-Q101 compliance, and validated thermal performance on FR4 PCBs.

Supply support for PBHV9540X-QF 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 semiconductors - high-performance, reliable components for automotive, industrial, and consumer markets.

PBHV9540X-QF belongs to Nexperia's AEC-Q101-qualified high-voltage BJT portfolio, engineered specifically for robust, thermally efficient switching in lighting, power conversion, and automotive subsystems where bipolar performance and proven reliability are critical.

FAQ

Is PBHV9540X-QF pin-compatible with its NPN complement PBHV8540X-Q?

No - PBHV9540X-QF is PNP and PBHV8540X-Q is NPN, so their pin functions are inverted: Pin 1 is emitter for both, but collector and base roles reverse polarity. Circuit redesign is required for substitution; they are functional complements, not pin-for-pin replacements.

What is the recommended PCB layout for thermal performance?

Use the wave soldering footprint (Fig. 16) with 6 cm² copper area connected to Pin 2 (collector), tin-plated, single-sided FR4. Thermal resistance drops from 240 K/W to 83 K/W with this pad - enabling 1.5 W dissipation. Avoid thermal relief on collector pad traces.

Does PBHV9540X-QF support 100% duty cycle operation?

Yes, but only within derated power limits: at Tamb = 25 °C, P_tot = 1.5 W with 6 cm² pad; above 25 °C, power must be linearly reduced per Fig. 1. Continuous 0.5 A at −250 mV V_CEsat yields 125 mW - well within safe operating area at full ambient range.

Can PBHV9540X-QF be used in linear amplifier mode?

No - it is characterized and qualified exclusively for switching operation. The datasheet provides no linearity specs (e.g., distortion, bandwidth in common-emitter mode), and h_FE variation vs. I_C (Fig. 4) shows strong nonlinearity above −50 mA, making it unsuitable for analog amplification.

PBHV9540X-QF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 400 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 20mA, 100mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 20mA, 5V

Power - Max:: 520 mW

Frequency - Transition:: 65MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBHV9540X-QF FAQ

1.How can I place an order for PBHV9540X-QF through Aetrix?

Please submit a Request for Quotation (RFQ) for PBHV9540X-QF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PBHV9540X-QF reliable?

The price and inventory of PBHV9540X-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBHV9540X-QF is usually 5 days.

3.What payment methods are accepted for PBHV9540X-QF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBHV9540X-QF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBHV9540X-QF?

PBHV9540X-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBHV9540X-QF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PBHV9540X-QF?

For technical support, including PBHV9540X-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBHV9540X-QF requirements.

6.How does Aetrix verify that PBHV9540X-QF is sourced from the original manufacturer or authorized distributors?

All PBHV9540X-QF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PBHV9540X-QF meets industry standards.

7.What is the process for return or replacement of PBHV9540X-QF?

All PBHV9540X-QF units undergo pre-shipment inspection (PSI). If there is an issue with PBHV9540X-QF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PBHV9540X-QF part is unused and in its original packaging.

Return procedure for PBHV9540X-QF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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