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

Nexperia USA Inc. PBSS5250XZ

Name: PBSS5250XZ
Brand: Nexperia USA Inc.
SKU: PBSS5250XZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS5250XZ

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBSS5250XZ.pdf

Description:: TRANS PNP 50V 2A SOT-89

Quantity:: RFQ Add To RFQ list

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Inventory:5,441

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Product details

Overview

PBSS5250XZ from Nexperia is a PNP low V_CE(sat) transistor in SOT89 package, rated for −50 V V_CEO, −2 A continuous collector current, and −380 mV V_CE(sat) at I_C = −2 A / I_B = −100 mA. It serves as a high-efficiency switching element in low-voltage power control circuits such as DC/DC converters and LED backlight drivers.

For engineers reviewing the PBSS5250XZ datasheet, PBSS5250XZ pinout, PBSS5250XZ application, or PBSS5250XZ equivalent, key selection criteria include verified V_CE(sat) performance at 2 A, thermal resistance under PCB-mount conditions (R_th(j-sp) = 16 K/W), automotive qualification per AEC-Q101, and SOT89 footprint compatibility with standard reflow soldering profiles.

Technical Context

This PNP bipolar junction transistor operates in saturation-switching mode with guaranteed V_CE(sat) ≤ −380 mV at I_C = −2 A and I_B = −100 mA, enabling minimal conduction loss in high-current, low-voltage load switching. Its h_FE ≥ 100 at I_C = −2 A ensures robust base drive margin under pulsed operation.

The device features AEC-Q101 qualification for automotive use, absolute maximum ratings including −50 V V_CEO, −5 A I_CM, and 150 °C T_j, with thermal performance characterized across three PCB mounting configurations (standard, 1 cm², and 6 cm² collector pad).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe collector-emitter voltage with open base; defines off-state blocking capability in supply-line switching.
I_C	−2 A - Continuous DC collector current rating; supports sustained 2 A load switching without derating at T_amb ≤ 25 °C.
V_CE(sat)	−380 mV - Measured at I_C = −2 A, I_B = −100 mA; enables <0.76 W conduction loss, reducing heatsink requirements.
h_FE	≥100 - Minimum DC current gain at I_C = −2 A, ensuring reliable saturation with modest base drive current.
R_th(j-sp)	16 K/W - Junction-to-solder-point thermal resistance on FR4 PCB; enables direct thermal path to copper pour for high-pulse reliability.
AEC-Q101	Qualified - Validated for automotive applications per Stress Test Qualification for Discrete Semiconductors.

Pinout & Package

SOT89 (SC-62) flat-lead surface-mount plastic package: 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, single-sided FR4 mounting with collector tab thermally connected to PCB copper area.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit terminal; internally bonded to emitter region; requires low-impedance connection to ground or negative rail.
2	Collector	Main current input terminal; electrically and thermally connected to exposed metal tab for enhanced heat dissipation.
3	Base	Control terminal; accepts −100 mA drive to achieve full saturation at −2 A collector current.

Key Features

Feature	Design Value
Low V_CE(sat)	−380 mV at −2 A ensures <0.76 W conduction loss, minimizing self-heating in battery-powered systems.
High I_C capability	−2 A continuous rating supports direct driving of relays, motors, and LED strings without external amplification.
Automotive qualification	AEC-Q101 compliance confirms reliability for under-hood and infotainment power stages operating up to 150 °C junction temperature.
Thermal optimization	16 K/W R_th(j-sp) enables efficient heat transfer from junction to solder point, supporting high-duty-cycle pulse operation.

Applications

DC/DC Converter Switching

Battery Charger Control

Use Scenario: High-efficiency synchronous rectifier or pre-regulator switch in 5–12 V buck converters.

IC Role / Device Role / Timing Role: PNP low-side switch controlling output current path during PWM off-phase.

Use Value: −380 mV V_CE(sat) reduces conduction loss by >40% vs. standard PNP transistors, improving converter efficiency above 85% at 1 A load.

Use Scenario: Constant-current charge control stage for Li-ion or NiMH battery packs.

IC Role / Device Role / Timing Role: Precision current-sinking element regulated via base voltage feedback loop.

Use Value: Tight h_FE consistency (≥100 at −2 A) enables stable ±3% current regulation without trimming resistors.

LCD Backlight Driver

Inductive Load Interface

Use Scenario: Current-regulated LED string driver in automotive instrument clusters and center displays.

IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink for 2–4 white LEDs in series.

Use Value: −320 mV typical V_CE(sat) at −1 A allows >90% luminous efficiency retention at 3.3 V supply with 12 V headroom.

Use Scenario: Relay or buzzer driver in vehicle body control modules (BCM) and HVAC actuators.

IC Role / Device Role / Timing Role: Flyback-suppressed switching element with integrated base resistor network support.

Use Value: −50 V V_CEO withstands >40 V inductive kickback; 150 °C T_j rating ensures operation during extended engine-off cabin heating cycles.

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 NSS5250F	Same SOT89 package; V_CE(sat) = −400 mV at −2 A; h_FE min = 85; no AEC-Q101 certification.	Valid for industrial DC/DC but not qualified for automotive ECU or BCM deployment.	Select when cost sensitivity outweighs automotive qualification requirement and −20 mV higher V_CE(sat) is acceptable.
Diodes Incorporated DXT5250P	V_CE(sat) = −420 mV at −2 A; I_C = −1.5 A continuous; R_th(j-a) = 225 K/W (standard FR4); AEC-Q101 qualified.	Lower current rating limits use in >1.5 A relay drivers; higher thermal resistance increases board-level temperature rise.	Prefer where AEC-Q101 is mandatory but peak current demand remains ≤1.5 A and thermal budget permits higher ambient rise.

Compared with NSS5250F and DXT5250P, PBSS5250XZ delivers the lowest V_CE(sat) (−380 mV), highest continuous I_C (−2 A), and best thermal performance (R_th(j-sp) = 16 K/W), making it optimal for space-constrained automotive power switches requiring minimal conduction loss and robust thermal management.

Availability

PBSS5250XZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and portable medical device power management requiring stable component supply and long-term lifecycle assurance.

Supply support for PBSS5250XZ 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 solutions.

PBSS5250XZ belongs to Nexperia's Low V_CE(sat) Transistor product line, engineered specifically for high-efficiency, high-current switching in automotive and industrial power management systems where thermal performance and AEC-Q101 compliance are critical.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current is −0.5 A per datasheet limiting values. However, for reliable saturation at −2 A collector current, −100 mA base drive is sufficient and recommended to avoid excessive base power dissipation (P_B ≤ 110 mW). Exceeding −200 mA does not improve V_CE(sat) and risks localized heating at the base contact.

Can PBSS5250XZ replace an NPN transistor in existing designs?

No - PBSS5250XZ is a PNP device with inverted polarity: emitter connects to higher potential, collector to load ground side. Direct replacement requires circuit topology revision, including inversion of control signal logic and adjustment of bias networks. Its NPN complement is PBSS4250X, not a drop-in substitute.

Is the SOT89 package lead-free and RoHS compliant?

Yes - PBSS5250XZ uses lead-free terminations and complies with EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for standard reflow. The package marking "%1L" includes site code placeholder and conforms to Nexperia's Pb-free manufacturing standard.

How does thermal performance change with different PCB copper areas?

R_th(j-a) improves from 225 K/W (standard footprint) to 90 K/W (6 cm² collector pad) on FR4, while R_th(j-sp) remains fixed at 16 K/W. Larger copper pads reduce ambient-to-solder-point resistance but do not affect junction-to-solder-point conduction; optimal layout uses ≥1 cm² collector pad for automotive-grade thermal stability.

PBSS5250XZ 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):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 380mV @ 100mA, 2A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 1A, 2V

Power - Max:: 550 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBSS5250XZ FAQ

1.How can I place an order for PBSS5250XZ through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS5250XZ 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 PBSS5250XZ reliable?

The price and inventory of PBSS5250XZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS5250XZ is usually 5 days.

3.What payment methods are accepted for PBSS5250XZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS5250XZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS5250XZ?

PBSS5250XZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS5250XZ 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 PBSS5250XZ?

For technical support, including PBSS5250XZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS5250XZ requirements.

6.How does Aetrix verify that PBSS5250XZ is sourced from the original manufacturer or authorized distributors?

All PBSS5250XZ 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 PBSS5250XZ meets industry standards.

7.What is the process for return or replacement of PBSS5250XZ?

All PBSS5250XZ units undergo pre-shipment inspection (PSI). If there is an issue with PBSS5250XZ, 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 PBSS5250XZ part is unused and in its original packaging.

Return procedure for PBSS5250XZ:

1.Submit a request within 90 days.

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

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