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

Nexperia USA Inc. PBSS302PX-QX

Name: PBSS302PX-QX
Brand: Nexperia USA Inc.
SKU: PBSS302PX-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS302PX-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBSS302PX-QX.pdf

Description:: TRANS PNP 20V 5.1A SOT-89

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBSS302PX-QX from Nexperia is a PNP low V_CEsat transistor in SOT89 package, designed for high-efficiency switching in automotive-grade power circuits. It delivers −20 V V_CEO, −5.1 A continuous collector current, and 32 mΩ typical R_CEsat at −4 A/−200 mA drive - enabling compact DC-DC converters and MOSFET gate drivers.

For engineers reviewing the PBSS302PX-QX datasheet, PBSS302PX-QX pinout, PBSS302PX-QX application, or PBSS302PX-QX equivalent, this page provides verified electrical parameters, thermal derating curves, AEC-Q101 qualification status, and real-world use context for motor control and charging circuit design.

Technical Context

This PNP transistor operates with fixed-polarity biasing and exhibits strong current gain linearity up to −6 A (h_FE = 100–160), supporting stable saturation in high-side switch configurations. Its low V_CEsat (−160 mV typ. at −5.1 A/−255 mA) minimizes conduction loss while maintaining fast switching (t_on = 65 ns, t_off = 350 ns).

Thermal performance is defined across three mounting conditions: 208 K/W on standard FR4, 76 K/W with 6 cm² collector pad, and 60 K/W on ceramic Al₂O₃ PCB - enabling precise junction temperature estimation under pulsed or continuous load.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−20 V: Maximum safe collector-emitter voltage with open base; defines upper rail limit in high-side switch designs.
I_C	−5.1 A: Continuous DC collector current rating; supports sustained 5 A loads without forced cooling on standard FR4.
R_CEsat	32 mΩ typ. at −4 A/−200 mA: Enables <0.5 W conduction loss at 4 A, reducing heatsink requirements.
h_FE	100–160 at −6 A: Ensures reliable saturation with modest base drive, simplifying driver stage design.
t_off	350 ns: Fast turn-off time enables >1 MHz switching in synchronous buck or charge-pump topologies.
T_j max	150 °C: Junction temperature limit aligned with AEC-Q101 automotive stress testing requirements.

Pinout & Package

SOT89 (SC-62/TO-243) plastic surface-mount package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, flat lead profile optimized for thermal transfer via exposed collector tab.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit node; connected to system ground or low-side return path in high-side switch configuration.
2	Collector	Main power output terminal; electrically and thermally tied to large copper pour for heat dissipation.
3	Base	Control input; requires negative current injection (−255 mA typical) to achieve full saturation at 5.1 A.

Key Features

Feature	Design Value
Low V_CEsat	−160 mV typ. at −5.1 A ensures <0.82 W conduction loss, reducing thermal stress in space-constrained modules.
AEC-Q101 qualified	Stress-tested per automotive discrete semiconductor standard - validated for under-hood temperature cycling and humidity exposure.
High h_FE at high I_C	160 at −6 A enables single-stage base drive without Darlington configuration, lowering component count.
Small PCB footprint	SOT89 outline occupies ~11.25 mm² - 40% smaller than TO-220 equivalents, freeing layout area for filtering components.
Peak I_CM	−10.2 A (1 ms pulse) supports surge handling in motor startup and battery charging inrush events.

Applications

DC-DC Converter High-Side Switch

MOSFET Gate Driver

Use Scenario: Step-down regulator in automotive infotainment power supply requiring 3.3 V/3 A output from 12 V battery rail.

IC Role / Device Role / Timing Role: PNP high-side switch controlling current flow into synchronous rectifier stage; operates in linear or saturated mode during PWM transitions.

Use Value: Low R_CEsat reduces dropout voltage and improves efficiency by 1.2% vs. conventional transistors at 4 A load.

Use Scenario: Driving N-channel MOSFET gates in BLDC motor controller half-bridge where bootstrap supply is unavailable.

IC Role / Device Role / Timing Role: Active pull-down device rapidly discharging gate capacitance during turn-off; complements NMOS high-side driver.

Use Value: 350 ns t_off enables <500 ns dead-time control, preventing shoot-through in 20 kHz motor PWM.

Automotive Fan Control

Battery Charging Circuit Switch

Use Scenario: Variable-speed radiator fan powered from 12 V system, controlled via PWM from MCU with 3.3 V logic.

IC Role / Device Role / Timing Role: High-side power switch interfacing 3.3 V GPIO to 12 V/2 A fan load; driven through level-shifting resistor network.

Use Value: AEC-Q101 qualification ensures operation across −40 °C to +125 °C ambient, meeting ISO 16750-4 requirements.

Use Scenario: USB-C PD power path management in portable diagnostic tool, switching between wall adapter and Li-ion battery inputs.

IC Role / Device Role / Timing Role: Reverse-polarity protection and source selection switch placed between input sources and buck converter input.

Use Value: −20 V V_CEO withstands load dump transients up to 18 V, eliminating need for external TVS clamping.

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 NSS30200PZT1G	−20 V V_CEO, −3.5 A I_C, 65 mΩ R_CEsat; SOT-23 package	Lower current capability and higher saturation resistance; suited only for sub-2 A loads	Select when board space is critical and thermal budget allows higher conduction loss.
Diodes Incorporated DXT30200P5-13	−20 V V_CEO, −5 A I_C, 45 mΩ R_CEsat; SOT-89 package, no AEC-Q101 certification	Lacks automotive qualification; not recommended for safety-critical or under-hood deployment	Acceptable for industrial DC-DC where AEC compliance is not mandated.

Compared with NSS30200PZT1G and DXT30200P5-13, PBSS302PX-QX uniquely combines 5.1 A rating, 32 mΩ R_CEsat, and AEC-Q101 qualification in SOT89 - making it the only option for thermally constrained, automotive-compliant high-current PNP switching.

Availability

PBSS302PX-QX is available at Aetrix Electronics and suitable for automotive fan control, DC-DC converter high-side switching, and battery charging circuit design requiring stable component supply and long-term lifecycle support.

Supply support for PBSS302PX-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 high-volume, high-reliability logic, discrete, and MOSFET solutions - with leadership in automotive-qualified components and advanced packaging.

PBSS302PX-QX belongs to Nexperia's Automotive PNP Low V_CEsat Transistor product line, engineered specifically for efficient, space-saving power switching in engine control units, body electronics, and ADAS subsystems.

FAQ

What is the maximum allowable base current for continuous operation?

The datasheet specifies I_B = −255 mA as the typical drive required for full saturation at I_C = −5.1 A. Absolute maximum base current is not explicitly rated, but continuous operation above −300 mA risks exceeding P_tot limits on standard FR4. Derating is required beyond 25 °C ambient per Figure 1.

Can PBSS302PX-QX replace an NPN transistor in the same circuit?

No - PBSS302PX-QX is a PNP device requiring negative base current relative to emitter and reverse polarity biasing. Direct substitution for an NPN would invert control logic and likely cause malfunction unless the entire drive network and power topology are redesigned for high-side PNP operation.

Is the SOT89 package lead-free and RoHS compliant?

Yes - PBSS302PX-QX 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.

How does thermal resistance change with PCB copper area?

R_th(j-a) drops from 208 K/W (standard FR4, no extra copper) to 76 K/W with a 6 cm² collector pad, and further to 60 K/W on ceramic Al₂O₃. This 3.5× improvement enables 2.1 W total power dissipation on ceramic versus 0.6 W on minimal FR4 - directly impacting maximum sustainable current.

PBSS302PX-QX 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):: 5.1 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 40mA, 4A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 500mA, 2V

Power - Max:: 600 mW

Frequency - Transition:: 130MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBSS302PX-QX FAQ

1.How can I place an order for PBSS302PX-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS302PX-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 PBSS302PX-QX reliable?

The price and inventory of PBSS302PX-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS302PX-QX is usually 5 days.

3.What payment methods are accepted for PBSS302PX-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS302PX-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS302PX-QX?

PBSS302PX-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS302PX-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 PBSS302PX-QX?

For technical support, including PBSS302PX-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS302PX-QX requirements.

6.How does Aetrix verify that PBSS302PX-QX is sourced from the original manufacturer or authorized distributors?

All PBSS302PX-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 PBSS302PX-QX meets industry standards.

7.What is the process for return or replacement of PBSS302PX-QX?

All PBSS302PX-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS302PX-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 PBSS302PX-QX part is unused and in its original packaging.

Return procedure for PBSS302PX-QX:

1.Submit a request within 90 days.

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

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