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

Nexperia USA Inc. PBSS5250PASX

Name: PBSS5250PASX
Brand: Nexperia USA Inc.
SKU: PBSS5250PASX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS5250PASX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: -

Datasheet:: PBSS5250PASX.pdf

Description:: PBSS5250PAS/SOT1061/HUSON3

Quantity:: RFQ Add To RFQ list

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Inventory:3,000

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Product details

Overview

PBSS5250PASX from Nexperia is a PNP low V_CE(sat) transistor in DFN2020D-3 (SOT1061D) package, designed for high-efficiency load switching in space-constrained power management circuits. It delivers 50 V V_CEO, 2 A continuous I_C, 380 mV max V_CE(sat) at −2 A/−100 mA, 100–200 h_FE, and features side-wettable flanks for AOI-compatible solder joint inspection - deployed in battery-powered motor drivers and USB-C charging switches.

For engineers reviewing the PBSS5250PASX datasheet, PBSS5250PASX pinout, PBSS5250PASX application, or PBSS5250PASX equivalent, this page provides verified package mapping, thermal derating curves, saturation voltage vs. current behavior, base drive requirements, and validated alternatives for PNP load-switch replacement in industrial and portable electronics.

Technical Context

This PNP transistor operates with open-base V_CEO = −50 V and supports pulsed I_CM up to −5 A. Its low 380 mV V_CE(sat) at −2 A/−100 mA enables <1 W dissipation under full load on standard FR4 PCBs, while R_CE(sat) ≤ 160 mΩ ensures minimal conduction loss in high-duty-cycle switching.

The DFN2020D-3 package integrates an exposed collector pad for direct thermal coupling, delivering R_th(j-a) as low as 60 K/W with 4-layer FR4 + 1 cm² collector pad. Transient thermal impedance data confirms stable operation under 300 µs pulses at δ ≤ 0.02, supporting PWM-controlled fan/motor loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe blocking voltage across collector-emitter with base open; defines off-state voltage rating in high-side switch configurations.
I_C	−2 A continuous - Sustained DC current capability at T_amb ≤ 25 °C; sets maximum steady-state load current without forced cooling.
V_CE(sat)	−380 mV max at −2 A/−100 mA - Low saturation voltage reduces power loss (P = I × V) to ≤760 mW, minimizing heatsink need in compact designs.
h_FE	100–200 at −2 A/−200 mA - Confirmed DC current gain range ensures predictable base drive sizing for reliable turn-on in discrete switch stages.
R_th(j-a)	60 K/W min - Achievable with 4-layer FR4 + 1 cm² collector pad; enables ~1.2 W power handling before reaching 150 °C junction limit.
f_T	100 MHz - Transition frequency supports fast switching (>100 kHz PWM) with controlled rise/fall times in digital load control.
C_c	35 pF - Collector capacitance at −10 V V_CB; determines Miller charge and switching speed trade-offs in high-frequency applications.

Pinout & Package

DFN2020D-3 (SOT1061D) is a 2 mm × 2 mm × 0.65 mm leadless plastic package with side-wettable flanks and an exposed collector thermal pad. It supports automated optical inspection (AOI) and offers superior thermal performance over traditional SOT packages.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control input requiring −100 mA typical drive for full saturation; connects to MCU GPIO or driver IC output.
2	Emitter (E)	High-side reference node; tied to positive rail in PNP high-side switch configuration; carries full load current.
3	Collector (C)	Switched output node; electrically and thermally connected to exposed bottom pad; routes load current to ground or return path.

Key Features

Feature	Design Value
Low V_CE(sat)	−380 mV max at −2 A ensures <0.8 W conduction loss, enabling compact layout without heatsinks in 5–12 V systems.
Side-wettable flanks	Enables 100% AOI verification of solder joints on production lines, eliminating X-ray inspection for process validation.
Exposed collector pad	Provides direct thermal path to PCB copper; achieves 60 K/W R_th(j-a) with 4-layer board - 2× better than SOT23-3.
High I_CM	−5 A peak allows brief inrush current handling (e.g., motor startup, capacitor charging) without device failure.
Wide T_amb range	−65 °C to +150 °C operation supports deployment in automotive under-hood modules and industrial outdoor enclosures.

Applications

USB-C Power Delivery Switch

Portable Fan Motor Control

Use Scenario: High-side switching of 5–20 V power paths in USB-C PD sink devices where reverse-current blocking and low dropout are critical.

IC Role / Device Role / Timing Role: PNP transistor configured as active-high load switch, driven by PD controller GPIO to enable/disable VBUS supply to downstream circuitry.

Use Value: 380 mV V_CE(sat) limits voltage drop to <2% at 5 V/2 A, preserving PD negotiation margin and reducing thermal stress on PCB traces.

Use Scenario: PWM-controlled 12 V DC fan in handheld medical monitors requiring silent, low-EMI speed regulation.

IC Role / Device Role / Timing Role: Discrete PNP switch replacing integrated load driver; base driven by 3.3 V MCU timer output via level-shifting resistor network.

Use Value: 100 MHz f_T and 35 pF C_c support clean 25 kHz PWM edges, minimizing audible coil whine and EMI emissions.

Li-ion Battery Protection Circuit

Industrial PLC Output Stage

Use Scenario: Overvoltage cutoff in 2-cell (8.4 V) Li-ion packs, disconnecting charger when cell voltage exceeds 4.3 V per cell.

IC Role / Device Role / Timing Role: PNP switch placed between charger IC enable pin and system ground, activated only during fault conditions.

Use Value: −5 V V_EBO rating ensures robustness against transient spikes during hot-plug events; 150 °C T_j(max) withstands short-circuit latch-up scenarios.

Use Scenario: 24 V DC solenoid driver in factory automation I/O modules where reliability and long-term thermal stability are mandatory.

IC Role / Device Role / Timing Role: High-side switch controlling 24 V/1.5 A solenoid; base driven by optocoupled isolator output with 1 kΩ series resistor.

Use Value: 50 V V_CEO provides 2× safety margin over 24 V rail; 160 mΩ R_CE(sat) ensures <360 mW loss at full load, compatible with conformal-coated PCBs.

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 NSS20201MR6T1G	V_CEO = −20 V, I_C = −2 A, V_CE(sat) = −250 mV @ −2 A/−200 mA, SOT-723 package (1.25 × 0.85 mm).	Limited to ≤20 V systems; smaller footprint but no exposed thermal pad - R_th(j-a) = 290 K/W limits power handling.	Select for ultra-compact 3.3–5 V logic-level switching where board area is critical and thermal load is <300 mW.
Diodes Incorporated DMMT5201WQ-7	V_CEO = −50 V, I_C = −2 A, V_CE(sat) = −450 mV @ −2 A/−100 mA, SOT-363 package (2.2 × 1.35 mm), no side-wettable flanks.	Higher V_CE(sat) increases conduction loss by 34%; larger footprint; no AOI support - requires post-solder X-ray verification.	Choose only if legacy SOT-363 footprint compatibility is required and AOI is not mandated in manufacturing.

Compared with PBSS5250PASX, NSS20201MR6T1G trades voltage rating and thermal performance for size, while DMMT5201WQ-7 sacrifices saturation voltage efficiency and manufacturability for pinout familiarity - PBSS5250PASX uniquely balances 50 V rating, 380 mV V_CE(sat), AOI readiness, and 60 K/W thermal resistance in a 2 mm² footprint.

Availability

PBSS5250PASX is available at Aetrix Electronics and suitable for USB-C power delivery switches, portable fan motor control, and industrial PLC output stages requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for PBSS5250PASX 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PBSS5250PASX belongs to Nexperia's "Low V_CE(sat) Transistor" product line, engineered specifically for high-efficiency load switching in battery-powered and thermally constrained applications where minimal conduction loss and AOI-compatible packaging are mandatory.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current (I_B) is −0.5 A per datasheet limiting values. However, for reliable continuous operation at I_C = −2 A, the recommended base drive is −100 mA to −200 mA (I_C/I_B = 10–20), ensuring full saturation without excessive base power dissipation or thermal stress on the bond wires.

Can PBSS5250PASX be used in high-frequency PWM applications above 100 kHz?

Yes - with f_T = 100 MHz and C_c = 35 pF, PBSS5250PASX supports clean switching up to 250 kHz PWM. Real-world performance depends on gate drive strength and PCB layout; use ≤1 kΩ base resistor and minimize trace inductance to achieve <100 ns rise/fall times at 2 A load.

Is the exposed collector pad electrically isolated from the internal die?

No - the exposed collector pad is electrically connected to the collector terminal (Pin 3) and forms part of the main current path. It must be soldered to a dedicated PCB copper pour tied to the collector net; floating or grounded pads will cause functional failure or thermal runaway.

How does thermal performance change when using a single-layer versus 4-layer FR4 PCB?

On single-layer FR4 with standard footprint, R_th(j-a) is 250 K/W (1 W max); with 4-layer FR4 and 1 cm² collector pad, it improves to 60 K/W (2 W max). This 4× thermal improvement allows 2.5× higher continuous power handling and extends safe operating area under sustained load.

PBSS5250PASX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: -

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

Voltage - Collector Emitter Breakdown (Max):: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: -

Frequency - Transition:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

PBSS5250PASX FAQ

1.How can I place an order for PBSS5250PASX through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS5250PASX 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 PBSS5250PASX reliable?

The price and inventory of PBSS5250PASX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS5250PASX is usually 5 days.

3.What payment methods are accepted for PBSS5250PASX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS5250PASX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS5250PASX?

PBSS5250PASX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS5250PASX 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 PBSS5250PASX?

For technical support, including PBSS5250PASX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS5250PASX requirements.

6.How does Aetrix verify that PBSS5250PASX is sourced from the original manufacturer or authorized distributors?

All PBSS5250PASX 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 PBSS5250PASX meets industry standards.

7.What is the process for return or replacement of PBSS5250PASX?

All PBSS5250PASX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS5250PASX, 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 PBSS5250PASX part is unused and in its original packaging.

Return procedure for PBSS5250PASX:

1.Submit a request within 90 days.

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

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