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

Nexperia USA Inc. PBHV9540XX

Name: PBHV9540XX
Brand: Nexperia USA Inc.
SKU: PBHV9540XX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBHV9540XX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBHV9540XX.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBHV9540XX from Nexperia is a PNP high-voltage bipolar junction transistor (BJT) optimized for switching in high-voltage DC-DC and AC-DC power stages, featuring −400 V V_CEO, −0.5 A continuous I_C, and low −400 mV V_CEsat at I_C = −200 mA / I_B = −40 mA. It operates in SOT89 package and targets electronic ballasts, LED chain drivers, and HID front lighting where high breakdown voltage and low conduction loss are critical.

For engineers reviewing the PBHV9540XX datasheet, PBHV9540XX pinout, PBHV9540XX application, or PBHV9540XX equivalent, key selection criteria include verified −400 V collector-emitter blocking capability, confirmed 2000 mΩ R_CEsat under pulsed conditions, thermal resistance of 83 K/W (junction-to-solder point), and compatibility with FR4 PCBs using standard or extended collector pad footprints.

Technical Context

This PNP BJT employs epitaxial planar technology to achieve stable h_FE (140–450) across −20 mA to −100 mA I_C at V_CE = −5 V and 25 °C, with minimal degradation up to 100 °C. Its low V_CEsat and high V_CEO stem from optimized base doping and collector drift region design, enabling efficient operation in linear and saturated switching modes.

Switching performance is characterized by t_on = 3710 ns and t_off = 1710 ns under V_CC = −6.2 V, I_C = −100 mA, I_Bon = −10 mA, and I_Boff = 20 mA. The device exhibits C_c = 14 pF and C_e = 235 pF at 1 MHz, supporting predictable turn-on/turn-off behavior in high-frequency SMPS and lighting control circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−400 V - Enables direct use in 300 V AC rectified bus applications without series stacking.
I_C (continuous)	−0.5 A - Supports sustained current in LED chain drivers and telecom hook switches.
V_CEsat	−400 mV @ I_C = −200 mA, I_B = −40 mA - Reduces conduction loss and self-heating in high-duty-cycle switching.
h_FE	140–450 @ V_CE = −5 V, I_C = −20 mA - Ensures reliable base drive margin across temperature and production spread.
R_th(j-sp)	83 K/W - Achievable with 6 cm² collector copper pad; enables 1.5 W dissipation at T_amb ≤ 25 °C.
f_T	65 MHz @ V_CE = −5 V, I_C = −50 mA - Confirms usable gain bandwidth for feedback-controlled SMPS error amplifiers.
t_off	1710 ns - Limits switching losses in 50–100 kHz lighting and ballast topologies.

Pinout & Package

The PBHV9540XX is housed in a SOT89 (SC-62) plastic surface-mounted package measuring 4.5 mm × 2.5 mm × 1.5 mm, with 1.5 mm lead pitch and flat leads optimized for thermal transfer via the collector tab.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit node; connected to high-side rail or ground return depending on topology; requires low-inductance routing for fast switching.
2	Collector	Main power terminal; electrically and thermally tied to large copper area (≥6 cm² recommended) for heat dissipation and EMI control.
3	Base	Control input; driven with negative current to saturate; requires series resistor to limit I_B ≤ −250 mA peak per datasheet limits.

Key Features

Feature	Design Value
High-voltage blocking	−400 V V_CEO rating ensures single-device operation in 277 VAC and 400 VDC bus systems without derating.
Low saturation voltage	−400 mV V_CEsat at rated I_C/I_B reduces power loss by >30% vs. standard PNP transistors in same package.
Thermal robustness	R_th(j-sp) = 83 K/W with extended collector pad allows full 1.5 W power handling at ambient ≤25 °C.
Stable DC gain	h_FE remains ≥140 up to I_C = −100 mA, simplifying base drive design for consistent saturation across load range.
Fast switching	t_off = 1710 ns supports operation up to ~100 kHz with manageable switching loss in lighting and SMPS.

Applications

Electronic Ballast for Fluorescent Lighting

LED Driver for LED Chain Module

Use Scenario: High-frequency resonant inverter driving parallel fluorescent lamps with instant start and dimming capability.

IC Role / Device Role / Timing Role: Main PNP switch in half-bridge output stage, handling 300–400 V DC bus and switching at 20–50 kHz.

Use Value: −400 V V_CEO eliminates need for series-connected devices; −400 mV V_CEsat minimizes conduction loss during lamp preheat phase.

Use Scenario: Constant-current driver for 12–24 LED strings in commercial signage, powered from 350 VDC intermediate bus.

IC Role / Device Role / Timing Role: Linear or PWM-controlled high-side current sink transistor regulating LED string current.

Use Value: Stable h_FE across temperature ensures accurate current regulation; low V_CEsat improves efficiency at full brightness.

LCD Backlighting

HID Front Lighting

Use Scenario: CCFL inverter for automotive or industrial LCD panels requiring high-voltage AC generation from 12 V supply.

IC Role / Device Role / Timing Role: PNP switch in Royer or push-pull oscillator core, operating at 50–100 kHz with high dV/dt stress.

Use Value: Low C_c (14 pF) and high f_T (65 MHz) support clean square-wave oscillation; −400 V rating withstands transformer flyback spikes.

Use Scenario: Ignition and run-mode control in automotive HID headlamps, managing 20–30 kV ignition pulses and 85 V run voltage.

IC Role / Device Role / Timing Role: Primary switching element in DC-AC inverter feeding HID lamp transformer primary.

Use Value: −400 V V_CEO safely clamps transformer leakage energy; 1.5 W P_tot supports continuous 35 W lamp operation with thermal margin.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
PBH8540X	NPN complement; +400 V V_CEO, +0.5 A I_C, +400 mV V_CEsat	Requires inverted drive logic and high-side current sensing; unsuitable for emitter-follower configurations.	Select when NPN topology aligns with existing gate driver architecture or when complementary pairing is needed in bridge designs.
MJD44H11T4G	−80 V V_CEO, −8 A I_C, TO-220 package; higher current but lower voltage rating.	Not viable for 300+ V bus applications; requires heatsink even at moderate duty cycles.	Choose only for low-voltage, high-current linear regulators or motor drivers where voltage stress <100 V.

Compared with PBHV9540XX, PBH8540X offers identical voltage/current specs but opposite polarity-requiring redesign of biasing and layout-while MJD44H11T4G trades critical 400 V capability for higher current and thermal mass, making it incompatible with HID or electronic ballast use cases.

Availability

PBHV9540XX is available at Aetrix Electronics and suitable for electronic ballasts, LED chain drivers, and HID front lighting requiring stable component supply, long-term manufacturability, and RoHS-compliant SMT assembly.

Supply support for PBHV9540XX 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, delivering high-performance, reliable components for power management, logic, and analog applications.

PBHV9540XX belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for energy-efficient switching in lighting, industrial power supplies, and telecom infrastructure where voltage resilience and low conduction loss are mandatory.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current (I_B) is −250 mA per datasheet limiting values. For continuous DC operation, base current must be limited to ensure junction temperature stays within 150 °C, typically requiring I_B ≤ −40 mA at I_C = −200 mA to maintain safe thermal margin on standard FR4 PCBs.

Can PBHV9540XX replace a MOSFET in high-voltage switching applications?

No-it is a bipolar transistor requiring continuous base current to remain saturated, unlike voltage-driven MOSFETs. Its −400 mV V_CEsat is competitive with low-R_DS(on) MOSFETs at similar current levels, but gate drive simplicity and zero static gate current make MOSFETs preferable above ~100 kHz or where drive power must be minimized.

Is PBHV9540XX qualified for automotive applications?

No-the 2024 revision explicitly states "non-automotive qualification" and directs users to Nexperia's −Q automotive-grade alternatives. It lacks AEC-Q101 stress testing, PPAP documentation, and guaranteed operation over −40 °C to +125 °C junction range required for automotive under-hood use.

What PCB layout practices maximize thermal performance?

To achieve the rated 1.5 W power dissipation, the collector pad must be connected to ≥6 cm² of 1 oz. copper on the top layer, with thermal vias (≥6× 0.3 mm diameter) connecting to inner or bottom-layer copper planes. Avoid narrow traces between collector pin and pad; keep base/emitter traces short to minimize switching loop inductance.

PBHV9540XX 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:: 400mV @ 40mA, 200mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 100mA, 5V

Power - Max:: 1.5 W

Frequency - Transition:: 65MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBHV9540XX FAQ

1.How can I place an order for PBHV9540XX through Aetrix?

Please submit a Request for Quotation (RFQ) for PBHV9540XX 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 PBHV9540XX reliable?

The price and inventory of PBHV9540XX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBHV9540XX is usually 5 days.

3.What payment methods are accepted for PBHV9540XX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBHV9540XX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBHV9540XX?

PBHV9540XX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBHV9540XX 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 PBHV9540XX?

For technical support, including PBHV9540XX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBHV9540XX requirements.

6.How does Aetrix verify that PBHV9540XX is sourced from the original manufacturer or authorized distributors?

All PBHV9540XX 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 PBHV9540XX meets industry standards.

7.What is the process for return or replacement of PBHV9540XX?

All PBHV9540XX units undergo pre-shipment inspection (PSI). If there is an issue with PBHV9540XX, 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 PBHV9540XX part is unused and in its original packaging.

Return procedure for PBHV9540XX:

1.Submit a request within 90 days.

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

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