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

Nexperia USA Inc. PBHV8140Z-QX

Name: PBHV8140Z-QX
Brand: Nexperia USA Inc.
SKU: PBHV8140Z-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBHV8140Z-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: PBHV8140Z-QX.pdf

Description:: TRANS NPN 400V 1A SOT-223

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBHV8140Z-QX from Nexperia is an AEC-Q101-qualified NPN high-voltage low-V_CEsat transistor in SOT223 (SC-73) package, rated for 500 V V_CESM, 1 A continuous I_C, and 150–250 mV V_CEsat at I_C = 1 A / I_B = 200 mA. It serves as a robust switching element in automotive LED drivers and SMPS primary-side control stages where high breakdown voltage and low conduction loss are critical.

For engineers reviewing the PBHV8140Z-QX datasheet, PBHV8140Z-QX pinout, PBHV8140Z-QX application, or PBHV8140Z-QX equivalent, this device is selected for high-voltage linear/switching roles requiring stable h_FE > 100 at 50 mA, thermal resistance R_th(j-sp) = 15 K/W, and automotive-grade reliability under 150 °C junction operation.

Technical Context

This NPN bipolar junction transistor employs epitaxial base technology to achieve high V_CEO = 400 V and V_CESM = 500 V while maintaining low saturation voltage - V_CEsat ≤ 250 mV at I_C = 1 A and I_B = 200 mA. Its h_FE remains usable down to −55 °C and up to 100 °C, with typical gain of 155 at 50 mA and 20 at 1 A.

Thermal design leverages the SOT223's dual-collector leads (Pins 2 & 4) to deliver R_th(j-sp) = 15 K/W to solder point and P_tot = 1.45 W on 6 cm² copper pad. Switching performance includes t_on = 2845 ns and t_off = 3800 ns under defined test conditions (V_CC = 6 V, I_C = 0.5 A).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CESM	500 V peak collector-emitter voltage - enables direct interface with 400 V DC bus in automotive SMPS and LED string supplies.
V_CEsat	150–250 mV at I_C = 1 A / I_B = 200 mA - reduces conduction loss to ≤250 mW, critical for thermally constrained LED driver PCBs.
h_FE	10–155 range across I_C = 10 mA–1 A - supports both precision biasing (100+ at 50 mA) and high-current switching (20 at 1 A).
R_th(j-sp)	15 K/W - allows direct thermal coupling to PCB copper, enabling 1.45 W dissipation with minimal heatsink area.
t_off	3800 ns - defines maximum practical switching frequency <100 kHz in hard-switched topologies without excessive losses.
I_CM	2 A peak collector current - accommodates surge currents during motor startup or LED inrush in automotive modules.
V_EBO	6 V emitter-base rating - constrains base drive circuitry to low-voltage logic-compatible levels, simplifying gate driver design.

Pinout & Package

SOT223 (SC-73) plastic surface-mount package with 4 leads, 2.3 mm pitch, and integrated heatsink pad (Pins 2 & 4 both connected to collector). Dimensions: 6.5 mm × 3.5 mm × 1.65 mm body; mounting pad for collector occupies 6 cm² on FR4 PCB.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input; requires ≥200 mA peak drive for full saturation at 1 A collector current.
2	Collector	Main high-voltage current path; electrically tied to Pin 4 for enhanced thermal and current handling.
3	Emitter	Reference node for load return; connects to ground or low-side shunt in switch-mode configurations.
4	Collector	Second collector terminal - must be soldered to large copper pour to achieve rated P_tot and R_th(j-sp).

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive use per stress-test standard, supporting 15-year deployment in engine bay and cabin electronics.
Low V_CEsat architecture	150–250 mV saturation voltage minimizes power loss and self-heating in constant-current LED drivers operating near 1 A.
Dual-collector thermal design	Pins 2 and 4 both connect to collector, enabling 1.45 W total dissipation when mounted on 6 cm² copper - 2× standard SOT223 capability.
Wide temperature h_FE stability	h_FE ≥ 80 at −55 °C and ≥ 35 at 100 °C ensures predictable turn-on behavior across automotive ambient ranges.
High V_CEO/V_CESM	400 V / 500 V ratings allow direct use in 350–400 V DC intermediate bus applications without series stacking or derating.

Applications

LED Chain Driver

LCD Backlighting

Use Scenario: Constant-current driving of 10–15 white LEDs in series from 350–400 V DC supply in automotive instrument clusters.

IC Role / Device Role / Timing Role: High-voltage NPN switch controlling LED string current via PWM dimming at 1–10 kHz.

Use Value: Low V_CEsat limits power loss to <250 mW, eliminating need for external heatsink on compact cluster PCBs.

Use Scenario: Boost converter primary-side switch powering CCFL or edge-lit LED arrays in automotive infotainment displays.

IC Role / Device Role / Timing Role: Hard-switched transistor in 50–100 kHz flyback or resonant topology, handling 1 A peak primary current.

Use Value: 500 V V_CESM withstands reflected voltage spikes; dual-collector layout sustains 1.45 W dissipation during sustained backlight operation.

Automotive Motor Management

Switch Mode Power Supply

Use Scenario: Low-side driver for 12 V brushed DC motors in HVAC actuators or seat positioners, interfacing with 5 V MCU GPIO.

IC Role / Device Role / Timing Role: Saturated switch delivering up to 1 A stall current with fast turn-off (<4 µs) to prevent MOSFET shoot-through in H-bridge designs.

Use Value: V_BEsat = 0.95–1.1 V ensures reliable saturation with 5 V logic drive; h_FE ≥ 20 at 1 A guarantees sufficient current gain margin.

Use Scenario: Primary-side switch in offline 12–24 W AC/DC adapter for telematics modules, operating from 85–265 V AC input.

IC Role / Device Role / Timing Role: Discrete BJT replacing MOSFET in cost-sensitive flyback converters where <100 kHz operation suffices.

Use Value: 400 V V_CEO meets IEC 61000-4-5 surge requirements; R_th(j-sp) = 15 K/W enables compact transformer-isolated layout without thermal vias.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS12201LT1G	400 V V_CEO, 1.5 A I_C, 300–500 mV V_CEsat, SOT23-3 package	Limited to <250 mW dissipation; unsuitable for continuous 1 A loads without forced cooling	Select only for space-constrained, low-duty-cycle signal switching - not for LED driver or SMPS primary-side use.
STMicroelectronics BUJ302A	1000 V V_CEO, 2 A I_C, 500–800 mV V_CEsat, TO-220 package	Higher V_CEsat increases conduction loss by 2–3×; TO-220 requires heatsink even at 500 mA	Prefer for ultra-high-voltage industrial SMPS (>600 V), but avoid in automotive LED modules due to thermal overhead.

Compared with NSS12201LT1G and BUJ302A, PBHV8140Z-QX uniquely balances 500 V capability, 250 mV V_CEsat, and SOT223 thermal performance - enabling 1 A continuous operation on standard automotive PCBs without heatsinks or derating.

Availability

PBHV8140Z-QX is available at Aetrix Electronics and suitable for automotive LED driver modules, LCD backlight inverters, and 24 W SMPS designs requiring stable component supply with AEC-Q101 compliance and long-term lifecycle support.

Supply support for PBHV8140Z-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 semiconductors, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PBHV8140Z-QX belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for automotive lighting and power conversion where high breakdown voltage, low saturation loss, and AEC-Q101 reliability are mandatory.

FAQ

What is the maximum continuous collector current for PBHV8140Z-QX at 100 °C ambient?

At T_amb = 100 °C with standard footprint (R_th(j-a) = 170 K/W), the maximum continuous I_C is derated to approximately 0.45 A to maintain T_j ≤ 150 °C. This is calculated using P_tot = (T_j − T_amb) / R_th(j-a) ≈ 0.29 W, then applying V_CEsat = 200 mV → I_C = √(P_tot / R_CEsat) ≈ 0.45 A.

Can PBHV8140Z-QX replace a MOSFET in a 100 kHz flyback converter?

Yes, but with trade-offs: its 3800 ns t_off limits practical efficiency above ~80 kHz due to increased switching loss. It delivers lower conduction loss than many 600 V MOSFETs below 1 A, but lacks inherent body diode recovery benefits. Use only in fixed-frequency, hard-switched topologies where gate drive simplicity outweighs frequency penalty.

Is the SOT223 footprint compatible with standard reflow profiles?

Yes - Nexperia specifies JEDEC J-STD-020-compliant reflow for PBHV8140Z-QX. Peak temperature must not exceed 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s pre-peak. The dual-collector thermal pad requires full-solder coverage on 6 cm² copper to achieve rated P_tot; insufficient pad area causes premature thermal shutdown.

How does the PNP complement PBHV9540Z-Q differ electrically?

PBHV9540Z-Q shares identical V_CEO = 400 V, V_CESM = 500 V, and I_C = 1 A ratings but exhibits higher V_CEsat (300–450 mV) and lower h_FE (60–120 typ.) due to PNP process asymmetry. Its complementary role is strictly for high-side switching or push-pull output stages - not drop-in replacement in NPN circuits.

PBHV8140Z-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

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

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 200mA, 1A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 50mA, 10V

Power - Max:: 730 mW

Frequency - Transition:: 25MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

PBHV8140Z-QX FAQ

1.How can I place an order for PBHV8140Z-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for PBHV8140Z-QX 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 PBHV8140Z-QX reliable?

The price and inventory of PBHV8140Z-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBHV8140Z-QX is usually 5 days.

3.What payment methods are accepted for PBHV8140Z-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBHV8140Z-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBHV8140Z-QX?

PBHV8140Z-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBHV8140Z-QX 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 PBHV8140Z-QX?

For technical support, including PBHV8140Z-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBHV8140Z-QX requirements.

6.How does Aetrix verify that PBHV8140Z-QX is sourced from the original manufacturer or authorized distributors?

All PBHV8140Z-QX 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 PBHV8140Z-QX meets industry standards.

7.What is the process for return or replacement of PBHV8140Z-QX?

All PBHV8140Z-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBHV8140Z-QX, 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 PBHV8140Z-QX part is unused and in its original packaging.

Return procedure for PBHV8140Z-QX:

1.Submit a request within 90 days.

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

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