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

Nexperia USA Inc. PBSS301PX-QX

Name: PBSS301PX-QX
Brand: Nexperia USA Inc.
SKU: PBSS301PX-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS301PX-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBSS301PX-QX.pdf

Description:: TRANS PNP 12V 5.3A SOT-89

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBSS301PX-QX from Nexperia is a PNP low V_CE(sat) transistor in SOT89 package, rated for −12 V V_CEO, −5.3 A I_C, and 28 mΩ R_CE(sat) at −4 A/−200 mA drive, designed as a high-efficiency power switch in automotive DC-DC converters and motor control stages.

For engineers reviewing the PBSS301PX-QX datasheet, PBSS301PX-QX pinout, PBSS301PX-QX application, or PBSS301PX-QX equivalent, this device supports high-current switching with minimal conduction loss, thermal robustness on FR4 PCBs, AEC-Q101 qualification, and direct replacement analysis against NPN complement PBSS301NX-Q and alternative low-saturation PNP transistors.

Technical Context

This PNP bipolar junction transistor operates in saturation mode for switching applications, with verified V_CE(sat) ≤ 210 mV at −5.3 A/−265 mA and h_FE = 130–200 at −6 A. Its design targets low-loss power path control where base-driven current gain and thermal resistance (R_th(j-a) = 208 K/W on standard FR4) are critical.

It features AEC-Q101 qualification, −65 °C to +150 °C operating range, and transient thermal impedance curves validated for pulsed operation (tp ≤ 300 µs, δ ≤ 0.02). The SOT89 package enables compact layout while supporting 2.1 W dissipation on ceramic substrate.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−12 V - Maximum safe collector-emitter voltage with base open; defines maximum blocking capability in high-side switch configurations.
I_C	−5.3 A - Continuous collector current rating; supports sustained load switching in fan/motor drivers without derating at 25 °C ambient.
R_CE(sat)	28 mΩ (typ) at −4 A/−200 mA - Low saturation resistance directly reduces I²R conduction loss and heat generation in power paths.
h_FE	130–200 at −6 A - High DC current gain ensures reliable saturation with moderate base drive, reducing driver circuit complexity.
T_j max	+150 °C - Junction temperature limit enabling operation in under-hood automotive environments with appropriate PCB thermal design.
Q101 Qualified	AEC-Q101 compliant - Validated for automotive use including stress testing for temperature cycling, HTRB, and ESD per discrete semiconductor standard.

Pinout & Package

SOT89 (SC-62/TO-243) plastic surface-mount package: 3-pin, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body, with exposed collector tab for thermal conduction.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit node; connected to system ground or low-side return path in high-side switch topologies.
2	Collector	Main power output terminal; electrically and thermally tied to large copper pour for heat dissipation and current routing.
3	Base	Control input; requires negative current injection (−200 mA typical) to saturate; compatible with standard logic-level or dedicated PNP drivers.

Key Features

Feature	Design Value
Low V_CE(sat)	≤210 mV at −5.3 A/−265 mA - Enables >95% efficiency in 12 V power switches by minimizing voltage drop across active device.
High I_C capability	−5.3 A continuous / −10.6 A peak - Supports demanding loads like automotive radiator fans and BLDC gate drivers without external paralleling.
Thermal performance	R_th(j-sp) = 20 K/W - Enables rapid heat transfer from junction to solder point, critical for reliability in confined automotive enclosures.
AEC-Q101 qualification	Qualified per Stress Test Standard - Confirms suitability for automotive power modules, body control units, and ADAS subsystems requiring zero-failure field performance.

Applications

Automotive DC-DC Converters

MOSFET Gate Driving

Use Scenario: Step-down conversion from 12 V battery to 5 V/3.3 V rails in infotainment and telematics ECUs.

IC Role / Device Role / Timing Role: High-side synchronous rectifier or pre-regulator switch controlling power stage duty cycle.

Use Value: 28 mΩ R_CE(sat) cuts conduction loss by >40% vs. conventional PNP transistors, reducing thermal load on small-form-factor PCBs.

Use Scenario: Driving high-capacitance gates of N-channel MOSFETs in motor inverters and power supplies.

IC Role / Device Role / Timing Role: Fast-turning PNP pull-down switch providing controlled gate discharge during turn-off transitions.

Use Value: 325 ns t_off and −1.05 V V_BE(sat) ensure sub-microsecond gate discharge, minimizing shoot-through risk in half-bridge configurations.

Automotive Motor Control

Charging Circuits

Use Scenario: PWM-controlled actuation of HVAC blower motors and power seat actuators in passenger vehicles.

IC Role / Device Role / Timing Role: Low-side or high-side current switch interfacing microcontroller GPIO to motor winding.

Use Value: −5.3 A I_C and AEC-Q101 qualification support continuous 10 A peak surge handling with 150 °C junction survival during stall conditions.

Use Scenario: Current regulation and reverse-polarity protection in USB-C PD and 12 V accessory charging modules.

IC Role / Device Role / Timing Role: Precision current-sense switch in linear or switching charger feedback loops.

Use Value: Tight V_CE(sat) tolerance (±25%) and stable h_FE over −40 °C to +125 °C enable ±2% current accuracy without calibration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP low-V_CE(sat) transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS30100PZT1G	−12 V V_CEO, −3.5 A I_C, 45 mΩ R_CE(sat) - Lower current rating and higher saturation resistance.	Best suited for lower-power loads (<2 A); less suitable for motor/fan drivers requiring >4 A continuous.	Select when footprint compatibility with SOT-23 is required and thermal budget allows higher conduction loss.
Diodes Incorporated DMMT3010W-7-F	−12 V V_CEO, −3.2 A I_C, 50 mΩ R_CE(sat), SOT-323 package - Smaller package, lower power handling, no AEC-Q101 certification.	Targeted at consumer-grade portable electronics; not qualified for automotive under-hood deployment.	Choose only for non-automotive cost-sensitive designs where space constraints outweigh thermal and reliability requirements.

Compared with NSS30100PZT1G and DMMT3010W-7-F, PBSS301PX-QX delivers 51% higher continuous current, 38% lower R_CE(sat), and certified automotive reliability-making it the sole option for AEC-compliant 5 A switching in engine bay or chassis-mounted modules.

Availability

PBSS301PX-QX is available at Aetrix Electronics and suitable for automotive DC-DC converters, motor control modules, and charging circuits requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.

Supply support for PBSS301PX-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 essential semiconductors for automotive, industrial, and mobile markets.

PBSS301PX-QX belongs to Nexperia's Automotive-qualified PNP low V_CE(sat) transistor family, engineered specifically for efficient, robust power switching in harsh-environment automotive subsystems.

FAQ

What is the maximum allowable base current for continuous operation?

The datasheet specifies I_B = −265 mA at I_C = −5.3 A for V_CE(sat) validation. Absolute maximum I_B is not explicitly defined, but continuous base current must remain within the package's thermal limits-typically ≤−300 mA with adequate PCB copper area. Derating is required above 25 °C ambient per Fig. 1 power curves.

Can PBSS301PX-QX replace an NPN transistor in the same circuit?

No-PBSS301PX-QX is a PNP device requiring inverted drive polarity: base must be pulled below emitter to conduct. Direct NPN substitution would require full schematic redesign, including signal inversion and supply rail reconfiguration. Its NPN complement is PBSS301NX-Q, not a drop-in replacement.

Is the SOT89 package lead-free and RoHS compliant?

Yes-Nexperia confirms PBSS301PX-QX meets RoHS Directive 2011/65/EU and REACH SVHC requirements. The SOT89 package uses lead-free matte tin plating, and the device is halogen-free per IEC 61249-2-21. Full compliance documentation is available via Nexperia's product portal.

How does thermal performance differ between FR4 and ceramic PCB mounting?

On standard FR4, R_th(j-a) = 208 K/W limits continuous power to ~0.6 W at 25 °C ambient; with 6 cm² collector pad, it improves to 76 K/W (1.65 W). On Al₂O₃ ceramic, R_th(j-a) drops to 60 K/W, enabling 2.1 W dissipation-critical for sustained 5 A switching in sealed automotive enclosures.

PBSS301PX-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):: 5.3 A

Voltage - Collector Emitter Breakdown (Max):: 12 V

Vce Saturation (Max) @ Ib, Ic:: 240mV @ 40mA, 4A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 1A, 2V

Power - Max:: 600 mW

Frequency - Transition:: 140MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBSS301PX-QX FAQ

1.How can I place an order for PBSS301PX-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS301PX-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 PBSS301PX-QX reliable?

The price and inventory of PBSS301PX-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS301PX-QX is usually 5 days.

3.What payment methods are accepted for PBSS301PX-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS301PX-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS301PX-QX?

PBSS301PX-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS301PX-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 PBSS301PX-QX?

For technical support, including PBSS301PX-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS301PX-QX requirements.

6.How does Aetrix verify that PBSS301PX-QX is sourced from the original manufacturer or authorized distributors?

All PBSS301PX-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 PBSS301PX-QX meets industry standards.

7.What is the process for return or replacement of PBSS301PX-QX?

All PBSS301PX-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS301PX-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 PBSS301PX-QX part is unused and in its original packaging.

Return procedure for PBSS301PX-QX:

1.Submit a request within 90 days.

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

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