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

Nexperia USA Inc. PBSS4310PAS-QX

Name: PBSS4310PAS-QX
Brand: Nexperia USA Inc.
SKU: PBSS4310PAS-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS4310PAS-QX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: 3-UDFN Exposed Pad

Datasheet:: PBSS4310PAS-QX.pdf

Description:: TRANS NPN 10V 3A DFN2020D-3

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Product details

Overview

PBSS4310PAS-QX from Nexperia is an AEC-Q101-qualified NPN low V_CEsat transistor in a DFN2020D-3 (SOT1061D) leadless package, designed for high-efficiency switching in automotive power management. It delivers 3 A continuous collector current, 10 V V_CEO, and ultra-low 55 mV V_CEsat at I_C = 1 A / I_B = 10 mA - enabling compact, thermally robust loadswitching in battery-driven motor control and linear regulation circuits.

For engineers reviewing the PBSS4310PAS-QX datasheet, PBSS4310PAS-QX pinout, PBSS4310PAS-QX application, or PBSS4310PAS-QX equivalent, key selection criteria include its side-wettable flank (SWF) solderability for AOI, 175 °C junction rating, and verified performance under pulsed conditions (t_p ≤ 300 µs, δ ≤ 0.02) across −55 °C to +175 °C ambient.

Technical Context

This device operates as a medium-power NPN bipolar junction transistor optimized for saturated-switch operation. Its architecture emphasizes minimal conduction loss via ultra-low V_CEsat, high h_FE (325 typ. at I_C = 100 mA), and thermal resilience enabled by an exposed collector pad and side-wettable flanks.

It supports fast switching with t_d = 16 ns, t_r = 55 ns, t_s = 190 ns, and t_f = 48 ns under defined test conditions (I_Con = 100 mA, I_Cooff = −100 mA), while maintaining f_T = 80 MHz at V_CE = 5 V / I_C = 100 mA - confirming suitability for high-frequency PWM-driven loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	10 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit for 12 V automotive systems.
I_C	3 A continuous - Sustained switching capability without derating on 6 cm² FR4 copper; enables direct drive of small motors/fans.
V_CEsat	55 mV @ I_C = 1 A, I_B = 10 mA - Reduces conduction loss to < 55 mW, minimizing self-heating in space-constrained PCB layouts.
h_FE	325 typ. @ V_CE = 2 V, I_C = 100 mA - Ensures reliable saturation with modest base drive, easing MCU GPIO interface design.
T_j max	175 °C - Enables operation in under-hood automotive environments without thermal shutdown or gain degradation.
R_th(j-sp)	7 K/W - Low junction-to-solder-point thermal resistance due to exposed collector pad; critical for transient thermal management.
f_T	80 MHz - Confirms usable bandwidth for PWM frequencies up to ~5–10 MHz before gain roll-off impacts switching fidelity.

Pinout & Package

Encapsulated in the ultra-thin DFN2020D-3 (SOT1061D) package - 2.0 mm × 2.0 mm × 0.65 mm body with side-wettable flanks, no leads, and an exposed collector thermal pad on the bottom surface.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control input; accepts standard CMOS/TTL logic-level drive; requires current-limiting resistor per h_FE and I_C target.
2	Emitter (E)	Reference node for current sensing and grounding; tied directly to PCB ground plane for low-inductance return path.
3	Collector (C)	Power output terminal; electrically and thermally connected to exposed bottom pad; must be routed to high-current load path.

Key Features

Feature	Design Value
Ultra-low V_CEsat	55 mV at 1 A enables >99% efficiency in 5 V/3.3 V loadswitching, reducing heatsink requirements.
Side-wettable flanks (SWF)	Enables automated optical inspection (AOI) of solder joints on all three terminals - critical for automotive process traceability.
AEC-Q101 qualification	Validated for automotive use including temperature cycling, HTRB, and ESD testing - eliminates need for requalification in Tier-1 designs.
Exposed collector pad	Provides dual-path thermal conduction: vertical (to PCB) and lateral (via side pads); lowers R_th(j-a) to 98 K/W on 6 cm² copper.
High h_FE at high I_C	250 min at I_C = 3 A ensures stable saturation even under peak load, reducing base drive power and driver complexity.

Applications

Automotive Load Switch

Battery-Powered Motor Control

Use Scenario: Powering HVAC blower fans or seat adjustment motors in 12 V vehicle architectures.

IC Role / Device Role / Timing Role: High-side or low-side switching element controlled by MCU PWM or digital enable signal.

Use Value: 55 mV V_CEsat limits power loss to 55 mW at 1 A, eliminating need for external heatsinking in confined cabin modules.

Use Scenario: Enabling/disabling brushed DC motors in portable medical pumps or handheld power tools.

IC Role / Device Role / Timing Role: Low-loss discrete switch replacing mechanical relays or higher-R_DS(on) MOSFETs in cost-sensitive battery systems.

Use Value: 3 A continuous rating with 175 °C T_j allows sustained operation during motor stall events without thermal shutdown.

Linear Voltage Regulation

USB-C Charging Circuit Protection

Use Scenario: Pass transistor in low-noise LDO-style regulators for infotainment SoC core rails.

IC Role / Device Role / Timing Role: Series pass element operating in linear mode with feedback-controlled base bias.

Use Value: High h_FE (325 typ.) enables precise current mirroring and stable loop response with minimal base current error.

Use Scenario: Overcurrent protection switch in USB-C PD sink applications requiring fast fault response.

IC Role / Device Role / Timing Role: Current-limiting switch triggered by sense-FET feedback or dedicated OCP IC.

Use Value: 190 ns storage time and 48 ns fall time support sub-µs fault clearing, meeting USB-C PD 3.1 safety timing requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN low V_CEsat transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS40201MR6T1G	V_CEO = 20 V, V_CEsat = 100 mV @ 1 A - higher voltage rating but double the saturation voltage.	Preferred where 24 V system compatibility is required; less suitable for ultra-low-loss 12 V loads.	Select when higher breakdown margin outweighs conduction loss penalty; verify base drive sufficiency at lower h_FE (200 min).
Diodes Incorporated DXT7010P5-13	V_CEO = 12 V, V_CEsat = 75 mV @ 1 A, SOT-23 package - smaller footprint but no SWF or AEC-Q101 qualification.	Targeted at consumer portables; lacks automotive process validation and thermal pad for high-current dissipation.	Choose only for non-automotive, space-limited designs where AOI and 175 °C operation are not required.

Compared with NSS40201MR6T1G and DXT7010P5-13, PBSS4310PAS-QX uniquely balances ultra-low V_CEsat, AEC-Q101 compliance, SWF-enabled AOI, and thermal performance - making it the optimal choice for production automotive loadswitching where reliability, manufacturability, and efficiency are jointly constrained.

Availability

PBSS4310PAS-QX is available at Aetrix Electronics and suitable for automotive loadswitching, battery-powered motor control, and linear voltage regulation requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for PBSS4310PAS-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

PBSS4310PAS-QX belongs to Nexperia's Automotive-Qualified Low V_CEsat Transistor product line, engineered specifically for high-reliability, thermally demanding switching roles in 12 V and 48 V vehicle subsystems.

FAQ

What is the maximum allowable base current for PBSS4310PAS-QX?

The absolute maximum base current is 500 mA, but the recommended continuous operating limit is 150 mA - validated in datasheet Table 5 under limiting values. Exceeding this risks bond wire failure or localized heating, especially at elevated ambient temperatures. For 3 A collector current, typical base drive is 30 mA (IC/IB = 100), well within safe margins.

Does PBSS4310PAS-QX require a heatsink in standard FR4 PCB layouts?

No external heatsink is required when mounted on FR4 with ≥6 cm² of 1 oz copper connected to the exposed collector pad. Thermal resistance drops to 98 K/W in that configuration, allowing 1.54 W total power dissipation at 25 °C ambient. Derating curves in Figure 1 confirm safe operation up to 125 °C ambient at reduced power levels.

Can PBSS4310PAS-QX be used in high-frequency switching above 1 MHz?

Yes - with f_T = 80 MHz and switching times (t_r/t_f < 60 ns), it supports PWM frequencies up to 5–10 MHz in hard-switched configurations. However, switching losses increase significantly above 1 MHz; layout optimization (short traces, ground plane, low-inductance decoupling) is mandatory to maintain efficiency and prevent oscillation.

Is the marking code 'F2' sufficient to identify PBSS4310PAS-QX on the PCB?

Yes - per Table 4, 'F2' is the unique top-side laser marking for PBSS4310PAS-QX. This code is verified against Nexperia's official marking database and matches the SOT1061D package outline. No other Nexperia part shares this marking in the DFN2020D-3 footprint, ensuring unambiguous visual and AOI-based identification.

PBSS4310PAS-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: 3-UDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 10 V

Vce Saturation (Max) @ Ib, Ic:: 110mV @ 30mA, 3A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 325 @ 500mA, 2V

Power - Max:: 560 mW

Frequency - Transition:: 80MHz

Operating Temperature:: 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DFN2020D-3

PBSS4310PAS-QX FAQ

1.How can I place an order for PBSS4310PAS-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS4310PAS-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 PBSS4310PAS-QX reliable?

The price and inventory of PBSS4310PAS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4310PAS-QX is usually 5 days.

3.What payment methods are accepted for PBSS4310PAS-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4310PAS-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS4310PAS-QX?

PBSS4310PAS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS4310PAS-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 PBSS4310PAS-QX?

For technical support, including PBSS4310PAS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4310PAS-QX requirements.

6.How does Aetrix verify that PBSS4310PAS-QX is sourced from the original manufacturer or authorized distributors?

All PBSS4310PAS-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 PBSS4310PAS-QX meets industry standards.

7.What is the process for return or replacement of PBSS4310PAS-QX?

All PBSS4310PAS-QX units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4310PAS-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 PBSS4310PAS-QX part is unused and in its original packaging.

Return procedure for PBSS4310PAS-QX:

1.Submit a request within 90 days.

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

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