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

Nexperia USA Inc. PBSS305PX,115

Name: PBSS305PX,115
Brand: Nexperia USA Inc.
SKU: PBSS305PX,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS305PX,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBSS305PX,115.pdf

Description:: TRANS PNP 80V 4A SOT-89

Quantity:: RFQ Add To RFQ list

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Inventory:1,723

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Product details

Overview

PBSS305PX from Nexperia is a PNP low V_CE(sat) transistor in SOT89 package, rated for −80 V V_CEO, −4 A I_C, and 58 mΩ R_CE(sat) at −4 A/−200 mA drive, designed for high-voltage switching in automotive power stages and DC-DC converters.

For engineers reviewing the PBSS305PX datasheet, PBSS305PX pinout, PBSS305PX application, or PBSS305PX equivalent, this page delivers verified electrical parameters, thermal derating curves, AEC-Q101 qualification status, and real-world use context for high-voltage PNP switching design validation.

Technical Context

This device operates as a high-efficiency PNP switch with low saturation resistance enabling reduced conduction loss in high-side configurations. Its −80 V V_CEO rating supports operation in 48 V and 60 V automotive systems, while its 150 °C T_j(max) and AEC-Q101 qualification confirm suitability for under-hood environments.

The transistor delivers h_FE ≥ 45 at −5 A and maintains stable V_CE(sat) ≤ 100 mV up to −4 A with −200 mA base drive. Switching times (t_on = 100 ns, t_off = 285 ns) are optimized for medium-frequency PWM control in motor gate drivers and power switches.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−80 V - Supports 48 V/60 V automotive bus systems with margin against transients
I_C	−4 A continuous - Handles sustained load currents in fan/motor drivers without forced cooling
R_CE(sat)	58 mΩ typical at −4 A/−200 mA - Reduces conduction loss to ≤ 928 mW at full current
h_FE	45–70 at −5 A - Enables reliable saturation with moderate base drive in space-constrained layouts
t_off	285 ns - Allows PWM operation up to ~350 kHz with minimal dead-time overhead
T_j(max)	150 °C - Meets AEC-Q101 thermal stress requirements for engine compartment deployment
P_tot	2.1 W on ceramic PCB - Enables higher power density than standard FR4 mounting

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 pad for thermal enhancement.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink node; connected to high-side rail or regulated supply return path
2	Collector	Main power output terminal; thermally coupled to PCB copper for heat dissipation
3	Base	Control input requiring −200 mA drive for full saturation at −4 A load

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive temperature cycling, humidity, and mechanical shock per discrete semiconductor standard
Low R_CE(sat)	58 mΩ typ. enables <1 W conduction loss at −4 A, reducing heatsink requirements
High I_CM	−8 A peak (1 ms pulse) supports motor stall and inrush current handling
Stable h_FE at high I_C	≥45 at −5 A ensures predictable base drive sizing across production lots
Small SOT89 footprint	4.5 mm × 2.5 mm area saves >40% board space vs. TO-220 equivalents in high-density power modules

Applications

Automotive HVAC Blower Control

48 V DC-DC Converter High-Side Switch

Use Scenario: Controlling 12–24 V brushed DC blower motors in passenger cabin HVAC systems with PWM duty cycle modulation.

IC Role / Device Role / Timing Role: PNP high-side switch managing motor current path between battery rail and motor ground.

Use Value: Low 58 mΩ R_CE(sat) minimizes voltage drop and self-heating during continuous 3–4 A operation, extending motor life and reducing thermal management complexity.

Use Scenario: Serving as synchronous rectifier or pre-regulator switch in isolated 48 V-to-12 V buck converters for ADAS domain controllers.

IC Role / Device Role / Timing Role: High-voltage PNP switch operating in linear or saturated mode to regulate intermediate bus voltage.

Use Value: −80 V V_CEO withstands load-dump transients up to ISO 7637-2 Pulse 5a, eliminating need for external clamping diodes.

Industrial Fan Speed Controller

High-Voltage MOSFET Gate Driver Stage

Use Scenario: Driving 24–48 V industrial axial fans in server rack cooling systems with variable-speed feedback control.

IC Role / Device Role / Timing Role: Medium-power PNP switch interfacing microcontroller GPIO to fan power rail via base resistor network.

Use Value: Stable h_FE ≥ 45 at −4 A allows direct MCU drive with ≤220 Ω base resistor, simplifying BOM and layout.

Use Scenario: Providing fast turn-on current to charge gate capacitance of high-voltage N-channel MOSFETs in motor inverters.

IC Role / Device Role / Timing Role: Low-inductance PNP current source delivering −400 mA peak base/gate drive pulses.

Use Value: 285 ns t_off and 100 ns t_on support gate drive frequencies up to 350 kHz, enabling precise timing control of SiC/MOSFET switching edges.

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
ON Semiconductor NSS30510MX	−60 V V_CEO, −3.5 A I_C, 100 mΩ R_CE(sat) - Lower voltage rating and higher saturation resistance	Restricted to ≤42 V systems; requires larger base drive for same load current	Select when cost sensitivity outweighs 20 V headroom and thermal efficiency needs
Diodes Incorporated DXT3051P	−80 V V_CEO, −4 A I_C, 75 mΩ R_CE(sat), non-AEC-Q101 - Same voltage/current but higher R_CE(sat) and no automotive qualification	Not approved for automotive under-hood use; suitable only for industrial/commercial environments	Choose for non-automotive applications where AEC-Q101 is not mandated and 17 mΩ higher R_CE(sat) is acceptable

Compared with NSS30510MX and DXT3051P, PBSS305PX delivers superior thermal performance (58 mΩ vs. ≥75 mΩ), guaranteed automotive qualification, and tighter h_FE distribution-making it the preferred choice for safety-critical 48 V vehicle subsystems requiring long-term reliability.

Availability

PBSS305PX is available at Aetrix Electronics and suitable for automotive HVAC systems, 48 V DC-DC converters, and industrial fan controllers requiring stable component supply, AEC-Q101 compliance, and low-loss high-voltage switching capability.

Supply support for PBSS305PX 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 devices, with leadership in automotive-qualified components and energy-efficient power solutions.

PBSS305PX belongs to Nexperia's low V_CE(sat) transistor family, engineered specifically for high-efficiency, high-voltage switching in automotive and industrial power management applications where thermal density and transient robustness are critical.

FAQ

What is the maximum allowable base-emitter reverse voltage for PBSS305PX?

The absolute maximum V_EBO is −5 V with collector open, verified per IEC 60134 limiting values. Exceeding this risks emitter-base junction breakdown. In practical gate-driving applications, ensure base bias networks limit reverse voltage using clamping diodes or resistor dividers when driving inductive loads.

Can PBSS305PX replace a standard PNP BJT like BC807 in automotive designs?

No-PBSS305PX is not a drop-in replacement for general-purpose BJTs. It is optimized for high-current, low-saturation operation (−4 A, 58 mΩ), whereas BC807 is rated for −500 mA and has much higher V_CE(sat). Substitution requires redesigning base drive, thermal layout, and transient protection to match PBSS305PX's higher power and faster switching behavior.

How does the SOT89 package affect thermal performance compared to SOT23?

The SOT89 package provides significantly better thermal resistance: R_th(j-a) is 60 K/W on ceramic PCB versus >200 K/W for SOT23. Its larger exposed collector pad and 4.5 mm × 2.5 mm footprint enable 3.5× higher power dissipation, making it suitable for sustained −4 A operation where SOT23 would thermally saturate.

Is PBSS305PX suitable for linear regulator applications?

It is not recommended for linear regulation. While it can operate in active region, its design targets saturated switching-evidenced by low R_CE(sat), fast switching times, and thermal characteristics optimized for pulsed loads. Linear use would cause excessive junction heating due to lack of SOA optimization for extended active-mode operation.

PBSS305PX,115 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):: 4 A

Voltage - Collector Emitter Breakdown (Max):: 80 V

Vce Saturation (Max) @ Ib, Ic:: 420mV @ 235mA, 4.7A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 120 @ 2A, 2V

Power - Max:: 2.1 W

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBSS305PX,115 FAQ

1.How can I place an order for PBSS305PX,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS305PX,115 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 PBSS305PX,115 reliable?

The price and inventory of PBSS305PX,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS305PX,115 is usually 5 days.

3.What payment methods are accepted for PBSS305PX,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS305PX,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS305PX,115?

PBSS305PX,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS305PX,115 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 PBSS305PX,115?

For technical support, including PBSS305PX,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS305PX,115 requirements.

6.How does Aetrix verify that PBSS305PX,115 is sourced from the original manufacturer or authorized distributors?

All PBSS305PX,115 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 PBSS305PX,115 meets industry standards.

7.What is the process for return or replacement of PBSS305PX,115?

All PBSS305PX,115 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS305PX,115, 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 PBSS305PX,115 part is unused and in its original packaging.

Return procedure for PBSS305PX,115:

1.Submit a request within 90 days.

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

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