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

Nexperia USA Inc. PBHV9540XF

Name: PBHV9540XF
Brand: Nexperia USA Inc.
SKU: PBHV9540XF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBHV9540XF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBHV9540XF.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:1,474

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Product details

Overview

PBHV9540XF from Nexperia is a PNP high-voltage bipolar junction transistor (BJT) optimized for switching in high-voltage DC-DC and AC-DC power stages. It delivers 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, enabling efficient operation in LED driver and electronic ballast circuits.

For engineers reviewing the PBHV9540XF datasheet, PBHV9540XF pinout, PBHV9540XF application, or PBHV9540XF equivalent, key selection criteria include verified high-voltage blocking capability, low saturation voltage under pulsed base drive, thermal resistance to ambient (83 K/W with 6 cm² collector pad), and SOT89 package compatibility with medium-power PCB layouts.

Technical Context

This PNP BJT operates as a high-side switch in off-line power topologies where robust V_CEO = −400 V and low R_CEsat ≤ 2000 mΩ support stable conduction during transient overloads. Its h_FE of 140–450 at I_C = −20 mA enables reliable base-driven switching without excessive drive current.

Designed for pulsed operation (tp ≤ 300 µs, duty ≤ 0.02), it exhibits fast turn-off (t_off = 1710 ns) and low storage time (t_s = 810 ns), critical for high-frequency SMPS and HID lighting control where switching losses must be minimized.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−400 V - Withstands full mains-referenced DC bus voltages in non-isolated flyback and buck-derived LED drivers.
I_C (continuous)	−0.5 A - Supports sustained current in fluorescent ballast preheat and LCD backlight boost stages.
V_CEsat	−400 mV @ I_C = −200 mA, I_B = −40 mA - Reduces conduction loss to <100 mW, easing thermal design on FR4 PCBs.
h_FE	140–450 @ V_CE = −5 V, I_C = −20 mA - Ensures predictable base current scaling across temperature (−55 °C to 150 °C).
R_th(j-sp)	20 K/W - Junction-to-solder-point thermal resistance enables direct thermal coupling to copper pour for >1 W dissipation.
f_T	65 MHz - Sufficient gain-bandwidth for stable feedback in analog-controlled dimming circuits.

Pinout & Package

SOT89 (SC-62) plastic surface-mounted package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body; collector tab thermally enhanced for PCB mounting.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink node; connected to high-side rail or return path in PNP switch configuration.
2	Collector	Main power output terminal; soldered to large copper area for thermal management and current handling.
3	Base	Control input; requires negative-going drive relative to emitter to enable conduction.

Key Features

Feature	Design Value
High-voltage blocking	V_CEO = −400 V supports direct connection to rectified 230 VAC mains without external snubbing in cost-sensitive ballasts.
Low saturation resistance	R_CEsat ≤ 2000 mΩ ensures <100 mW conduction loss at 200 mA, reducing heatsink requirements in space-constrained modules.
High-current gain at load	h_FE ≥ 140 at I_C = −100 mA enables use of low-power microcontroller GPIOs for base drive via simple resistor network.
Fast switching recovery	t_s = 810 ns and t_off = 1710 ns minimize dead-time losses in high-frequency (>50 kHz) SMPS designs.

Applications

Electronic Ballast

LED Chain Driver

Use Scenario: High-frequency resonant starter for T5/T8 fluorescent lamps with integrated preheat and run phases.

IC Role / Device Role / Timing Role: Main PNP switch controlling lamp current in half-bridge auxiliary winding drive.

Use Value: −400 V rating withstands lamp open-circuit transients; low V_CEsat maintains efficiency during 25–50 kHz switching.

Use Scenario: Constant-current switch in multi-string LED driver for commercial signage with 350–700 mA per string.

IC Role / Device Role / Timing Role: Series-pass element regulating current through LED chains powered from 300 V DC bus.

Use Value: Stable h_FE across temperature ensures consistent current regulation without active feedback compensation.

LCD Backlighting

HID Front Lighting

Use Scenario: Boost converter switch in CCFL or edge-lit LED backlight for industrial displays operating from 12–24 V DC input.

IC Role / Device Role / Timing Role: Primary switching transistor in discontinuous conduction mode (DCM) boost stage driving 600–1000 V loads.

Use Value: Low R_CEsat reduces thermal stress during extended brightness cycles; SOT89 footprint simplifies layout in narrow bezel designs.

Use Scenario: Ignition pulse generator and run-mode switch in automotive-grade HID headlamp ballasts (non-automotive qualified variant used in industrial test fixtures).

IC Role / Device Role / Timing Role: High-voltage switch triggering 20 kV ignition pulses and sustaining 85 V/3.5 A arc current.

Use Value: Robust V_CESM = −400 V prevents breakdown during repetitive ignition surges; fast t_off enables precise arc current shaping.

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
PHPT60303XK	V_CEO = −300 V, I_C = −0.3 A, V_CEsat = −350 mV - Lower voltage rating and current capacity.	Suitable only for ≤265 VAC-derived rails; not recommended for HID or 400 V bus applications.	Select when board space is constrained and voltage stress remains below 300 V.
BCP53-16	V_CEO = −45 V, I_C = −1.0 A, V_CEsat = −500 mV - Higher current but insufficient voltage rating for off-line use.	Limited to low-voltage DC-DC converters and automotive 12 V systems; cannot replace in mains-connected designs.	Choose only for 48 V or lower isolated power stages where higher I_C justifies reduced voltage margin.

Compared with PHPT60303XK and BCP53-16, PBHV9540XF uniquely balances 400 V blocking, 0.5 A current, and sub-400 mV saturation in a thermally optimized SOT89 package-making it the only viable option for compact, high-efficiency fluorescent/LED ballasts operating directly from rectified AC lines.

Availability

PBHV9540XF is available at Aetrix Electronics and suitable for electronic ballasts, LED chain drivers, LCD backlighting, and HID front lighting requiring stable component supply across industrial production cycles.

Supply support for PBHV9540XF 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness for power and signal applications.

PBHV9540XF belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for energy-efficient switching in lighting and power conversion where high V_CEO, low V_CEsat, and thermal resilience are critical.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current is −250 mA per datasheet limiting values. However, for reliable long-term operation with thermal margin, base current should be limited to ≤−40 mA under pulsed conditions (tp ≤ 300 µs, duty ≤ 0.02) to avoid localized heating at the bond wire interface and maintain h_FE stability.

Can PBHV9540XF be used in linear regulator configurations?

No-it is not characterized or rated for linear operation. The device lacks guaranteed safe operating area (SOA) data beyond pulsed switching conditions, and its R_th(j-a) of 240 K/W in free air makes it unsuitable for sustained power dissipation above ~200 mW without aggressive heatsinking, which contradicts its SOT89 form factor intent.

Is the SOT89 package lead-free and RoHS compliant?

Yes-PBHV9540XF is manufactured using lead-free solderable terminations and complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in Nexperia's official compliance documentation dated October 2024.

How does ambient temperature affect its maximum collector current?

I_C derates linearly above 25 °C ambient: at 100 °C, maximum continuous I_C drops to approximately −0.3 A due to junction temperature limits (T_j ≤ 150 °C) and thermal resistance constraints. Full derating curve is provided in Figure 1 of the datasheet.

PBHV9540XF 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

PBHV9540XF FAQ

1.How can I place an order for PBHV9540XF through Aetrix?

Please submit a Request for Quotation (RFQ) for PBHV9540XF 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 PBHV9540XF reliable?

The price and inventory of PBHV9540XF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBHV9540XF is usually 5 days.

3.What payment methods are accepted for PBHV9540XF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBHV9540XF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBHV9540XF?

PBHV9540XF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBHV9540XF 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 PBHV9540XF?

For technical support, including PBHV9540XF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBHV9540XF requirements.

6.How does Aetrix verify that PBHV9540XF is sourced from the original manufacturer or authorized distributors?

All PBHV9540XF 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 PBHV9540XF meets industry standards.

7.What is the process for return or replacement of PBHV9540XF?

All PBHV9540XF units undergo pre-shipment inspection (PSI). If there is an issue with PBHV9540XF, 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 PBHV9540XF part is unused and in its original packaging.

Return procedure for PBHV9540XF:

1.Submit a request within 90 days.

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

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