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

Nexperia USA Inc. PBSS5240ZF

Name: PBSS5240ZF
Brand: Nexperia USA Inc.
SKU: PBSS5240ZF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS5240ZF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: PBSS5240ZF.pdf

Description:: TRANS PNP 40V 2A SOT-223

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBSS5240ZF from Nexperia is a PNP low V_CEsat (BISS) transistor in SOT223 package, designed for high-efficiency switching in low-voltage power paths. It delivers −40 V V_CEO, −2 A continuous I_C, 320 mΩ R_CEsat at −1 A/−100 mA drive, and AEC-Q101 qualification - enabling robust operation in automotive-grade DC-DC converters and inductive load drivers.

For engineers reviewing the PBSS5240ZF datasheet, PBSS5240ZF pinout, PBSS5240ZF application, or PBSS5240ZF equivalent, key selection criteria include its low saturation resistance under pulsed conditions, thermal performance on FR4 PCBs with extended collector pad, and compatibility with 7 V max V_EBO bias networks in battery-fed systems.

Technical Context

This PNP BISS transistor uses optimized epitaxial base design to achieve low V_CEsat without compromising f_T (150 MHz) or h_FE linearity across −1 mA to −2 A. Its dual-collector pin configuration (pins 2 and 4) supports enhanced thermal dissipation via large copper area routing.

The device operates with V_BEsat = −1.2 V at −1 A/−100 mA and maintains R_CEsat ≤ 320 mΩ up to T_j = 150 °C, enabling stable performance in thermally constrained LED backlight and relay driver circuits where base drive current must remain below −300 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−40 V - Maximum safe blocking voltage in open-base configuration for supply-line switching
I_C	−2 A continuous - Supports sustained load currents in battery charger output stages
R_CEsat	320 mΩ at −1 A/−100 mA - Enables <0.32 V drop at 1 A, reducing conduction loss vs. standard PNP
f_T	150 MHz - Sufficient bandwidth for PWM frequencies up to ~10 MHz in fast-switching DC-DC control
V_EBO	−7 V - Limits base-emitter reverse bias in low-side gate-drive or level-shifted logic interfaces
P_tot	1.35 W with 6 cm² collector pad - Allows >1 W dissipation on standard FR4 without heatsink
AEC-Q101	Qualified - Meets stress test requirements for automotive under-hood and infotainment applications

Pinout & Package

SOT223 (SC-73) plastic surface-mounted package with 4 leads and integrated heatsink pad; pins 2 and 4 are internally connected to the collector for improved thermal transfer to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring −100 mA drive for full saturation at −1 A load
2	Collector	Main high-current output node; electrically tied to pin 4 for parallel current handling
3	Emitter	Common return path; connects to system ground or positive rail in high-side switch topology
4	Collector	Secondary collector terminal enabling dual-copper-area routing to maximize heat spreading

Key Features

Feature	Design Value
Low V_CEsat	−320 mV at −1 A/−100 mA enables >95% efficiency in 5 V supply-line switches
Dual-collector SOT223	Pins 2 + 4 reduce thermal resistance to 93 K/W (6 cm² pad), supporting 1.35 W dissipation
AEC-Q101 qualification	Validated for automotive temperature range (−40 °C to +150 °C) and humidity exposure
High h_FE	Min 55 at −2 A ensures reliable saturation with modest base drive in cost-sensitive designs
Low C_c	12 pF at −10 V V_CB minimizes switching losses in 100 kHz–1 MHz PWM applications

Applications

DC-to-DC Conversion

Battery Charger Control

Use Scenario: Step-down converter in automotive body control module supplying 3.3 V to microcontroller from 12 V battery.

IC Role / Device Role / Timing Role: PNP high-side switch in synchronous rectifier or linear pass element for low-noise LDO pre-regulator.

Use Value: 320 mΩ R_CEsat limits dropout to 320 mV at 1 A, preserving regulation margin under cold-crank conditions.

Use Scenario: Constant-current charge control for 2-cell Li-ion pack in portable medical device.

IC Role / Device Role / Timing Role: Precision current-sink transistor regulating charge current via feedback loop.

Use Value: Stable h_FE (55–140) across −100 mA to −2 A enables accurate current mirroring without external sense resistor.

LCD Backlight Driver

Inductive Load Switching

Use Scenario: PWM-driven white LED string (12 V, 350 mA) in industrial HMI display.

IC Role / Device Role / Timing Role: Low-loss PNP switch controlling cathode-side current path.

Use Value: −1.2 V V_BEsat allows direct drive from 3.3 V GPIO with 2.2 kΩ base resistor, eliminating level shifter.

Use Scenario: 12 V relay coil driver in HVAC control board with flyback protection.

IC Role / Device Role / Timing Role: High-current saturated switch turning relay on/off with <1 µs delay.

Use Value: −3 A I_CM withstands relay turn-on surge; 150 MHz f_T ensures clean edge integrity during fast PWM cycling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP low-V_CEsat transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS40501MR6T1G	V_CEO = −40 V, I_C = −1.5 A, R_CEsat = 450 mΩ - higher saturation resistance, lower current rating	Less suitable for 2 A continuous loads; requires larger base drive for same V_CEsat	Select when footprint compatibility with SOT-23 is required and peak current stays below 1.5 A.
Diodes Incorporated DXT5240Z-13	V_CEO = −40 V, I_C = −2 A, R_CEsat = 350 mΩ - slightly higher R_CEsat, same package	Acceptable for most PBSS5240ZF use cases but exhibits 10% higher conduction loss at 1 A	Choose if dual-source procurement is mandated and 30 mΩ R_CEsat penalty is acceptable.

Compared with NSS40501MR6T1G and DXT5240Z-13, PBSS5240ZF offers the lowest R_CEsat (320 mΩ) and highest I_C rating (−2 A) in SOT223, making it optimal for thermally demanding 1–2 A switching nodes where efficiency and junction temperature margin are critical.

Availability

PBSS5240ZF is available at Aetrix Electronics and suitable for automotive DC-DC conversion, battery charger control, and LCD backlighting requiring stable component supply across production lifecycles.

Supply support for PBSS5240ZF 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 energy-efficient power transistors.

PBSS5240ZF belongs to Nexperia's BISS transistor family, engineered specifically for high-efficiency, medium-power switching in automotive and industrial power management where low V_CEsat and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current (I_B) is −300 mA per datasheet Table 5. For reliable long-term operation, keep continuous I_B ≤ −200 mA when driving −1 A collector current, as validated by thermal derating curves showing 1.35 W total power dissipation at 25 °C ambient with 6 cm² collector pad.

Can PBSS5240ZF replace an NPN transistor in the same circuit?

No - PBSS5240ZF is a PNP device with opposite polarity and complementary functionality to NPN transistors like PBSS4240Z. Direct substitution would invert logic and bias requirements; circuit redesign including signal inversion and supply rail reconfiguration is required for functional equivalence.

How does the dual-collector configuration affect PCB layout?

Pins 2 and 4 are internally shorted to the collector, so both must be routed to the same high-current copper pour. This doubles effective thermal pad area and reduces R_th(j-sp) to 16 K/W, but requires symmetric trace width and solder mask clearance to avoid current crowding or uneven thermal expansion.

Is PBSS5240ZF suitable for linear regulator applications?

Yes - its low R_CEsat and stable h_FE support use as a pass transistor in adjustable linear regulators. However, power dissipation must be limited to ≤1.35 W with adequate PCB copper area, and V_CE must stay within −40 V to avoid breakdown during transient overvoltage events.

PBSS5240ZF 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:: PNP

Current - Collector (Ic) (Max):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 650mV @ 200mA, 2A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 1mA, 5V

Power - Max:: 650 mW

Frequency - Transition:: 150MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

PBSS5240ZF FAQ

1.How can I place an order for PBSS5240ZF through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS5240ZF 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 PBSS5240ZF reliable?

The price and inventory of PBSS5240ZF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS5240ZF is usually 5 days.

3.What payment methods are accepted for PBSS5240ZF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS5240ZF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS5240ZF?

PBSS5240ZF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS5240ZF 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 PBSS5240ZF?

For technical support, including PBSS5240ZF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS5240ZF requirements.

6.How does Aetrix verify that PBSS5240ZF is sourced from the original manufacturer or authorized distributors?

All PBSS5240ZF 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 PBSS5240ZF meets industry standards.

7.What is the process for return or replacement of PBSS5240ZF?

All PBSS5240ZF units undergo pre-shipment inspection (PSI). If there is an issue with PBSS5240ZF, 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 PBSS5240ZF part is unused and in its original packaging.

Return procedure for PBSS5240ZF:

1.Submit a request within 90 days.

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

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