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

Nexperia USA Inc. PBSS4032NXF

Name: PBSS4032NXF
Brand: Nexperia USA Inc.
SKU: PBSS4032NXF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS4032NXF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBSS4032NXF.pdf

Description:: TRANS NPN 30V 4.7A SOT-89

Quantity:: RFQ Add To RFQ list

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Inventory:4,000

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Product details

Overview

PBSS4032NXF from Nexperia is an NPN low V_CE(sat) transistor in SOT89 (SC-62) package, designed for high-efficiency switching in power management circuits. It delivers 4.7 A continuous collector current, 30 V V_CEO, and a typical R_CE(sat) of 45 mΩ at I_C = 4 A / I_B = 400 mA - enabling compact, thermally efficient battery-powered motor drives and charging switches.

For engineers reviewing the PBSS4032NXF datasheet, PBSS4032NXF pinout, PBSS4032NXF application, or PBSS4032NXF equivalent, key selection criteria include its ultra-low saturation resistance, fast switching times (t_on = 65 ns, t_off = 215 ns), thermal performance on FR4 (R_th(j-a) = 210 K/W standard footprint), and compatibility with space-constrained PCB layouts requiring <4.5 mm × 2.5 mm footprint.

Technical Context

This device operates as a medium-power NPN bipolar junction transistor optimized for saturated-switching mode. Its architecture emphasizes minimal conduction loss via low V_CE(sat) (200–350 mV across 2–4 A) and high h_FE (90–275) at high collector currents, reducing base drive requirements.

Thermal design is supported by three distinct mounting configurations: standard FR4 (2500 mW max at T_amb ≤ 25 °C), enhanced FR4 with 6 cm² collector pad (1650 mW), and ceramic Al₂O₃ substrate (600 mW), enabling scalable thermal management across cost and performance tiers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum safe collector-emitter voltage with open base; defines maximum supply rail compatibility in DC-DC and load-switch designs.
I_C	4.7 A - Continuous DC collector current rating; supports sustained operation in fan/motor drivers without forced cooling.
R_CE(sat)	45 mΩ (typ.) - Low saturation resistance at I_C = 4 A / I_B = 400 mA; reduces conduction loss to ≤720 mW, minimizing heatsink needs.
t_on/t_off	65 ns / 215 ns - Fast turn-on/turn-off times under 12.5 V V_CC, 1 A I_C; enables >1 MHz PWM operation in synchronous rectifiers and SMPS.
h_FE	275 (typ. at I_C = 6 A) - High DC current gain at high current ensures stable saturation with modest base drive (e.g., 22 mA for 6 A output).
T_j(max)	150 °C - Maximum junction temperature; allows reliable operation in sealed enclosures up to 105 °C ambient with proper derating.

Pinout & Package

Package: SOT89 (SC-62), surface-mount plastic package, 4.5 mm × 2.5 mm × 1.5 mm body, 1.5 mm lead pitch, standardized for reflow and wave soldering per Figures 16–17.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter (E)	Current return path; electrically connected to internal die substrate; requires low-impedance PCB trace for stable switching reference.
2	Collector (C)	Main power output terminal; largest thermal pad area (pin 2 tab) - must be routed to ≥6 cm² copper pour for optimal heat dissipation on FR4.
3	Base (B)	Control input; driven with 400 mA peak for full saturation at 4 A; requires series resistor to limit drive current and prevent oscillation.

Key Features

Feature	Design Value
Ultra-low V_CE(sat)	200–350 mV across 2–4 A load range - cuts conduction losses by >50% vs. conventional transistors, improving battery runtime in portable devices.
High h_FE at high I_C	150–275 at I_C = 2–6 A - reduces required base drive current, easing microcontroller GPIO or driver IC loading.
Optimized switching speed	t_d = 35 ns, t_r = 30 ns, t_s = 150 ns - minimizes overlap loss during transition, critical for high-frequency DC-DC converters.
Thermally robust SOT89	R_th(j-sp) = 20 K/W - low junction-to-solder-point resistance enables direct thermal coupling to PCB ground plane for passive cooling.

Applications

USB-C Power Delivery Switch

Portable Fan Motor Driver

Use Scenario: Bidirectional 20 V/3 A power path control in USB-C PD sink applications with reverse-current blocking.

IC Role / Device Role / Timing Role: NPN switch controlling VBUS discharge path and load disconnect; operates in hard-saturation mode with <100 ns response to fault signals.

Use Value: 45 mΩ R_CE(sat) limits voltage drop to ≤135 mV at 3 A, preserving PD negotiation margin while eliminating need for external heatsink.

Use Scenario: 12 V brushed DC fan control in handheld medical instruments requiring silent, low-EMI operation.

IC Role / Device Role / Timing Role: Low-side switching element driven by MCU PWM; configured for soft-start via base current ramping.

Use Value: High h_FE (≥125 at 1 A) enables direct GPIO drive (3.3 V, 20 mA), removing gate driver IC and saving 2.5 mm² PCB area.

Lithium-Ion Battery Charger FET

Industrial LED String Switch

Use Scenario: Charge path MOSFET replacement in single-cell Li-ion linear charger modules where cost and size are critical.

IC Role / Device Role / Timing Role: Precision current-limited switch regulating charge current via base current feedback loop.

Use Value: Tight V_CE(sat) tolerance (±15%) and stable h_FE over −40 to +85 °C ensure ±3% charge current accuracy without calibration.

Use Scenario: On/off control of 24 V, 2 A LED strings in smart building lighting nodes with DALI interface.

IC Role / Device Role / Timing Role: High-current DC switch interfacing DALI transceiver output to LED load; handles repetitive 100 ms on/off cycles.

Use Value: 10 A I_CM peak rating absorbs inrush current surges from cold LED strings, preventing false overcurrent shutdowns.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS40301MZ4T1G	V_CEO = 30 V, I_C = 4 A, R_CE(sat) = 55 mΩ (typ.), SOT-89 package	Higher R_CE(sat) increases conduction loss by ~22% at 4 A; lower h_FE (100 typ.) demands stronger base drive.	Preferred where legacy ON Semi BOM alignment is required; verify base drive capability before substitution.
Diodes Incorporated DXTN3020P5-13	V_CEO = 30 V, I_C = 4.5 A, R_CE(sat) = 48 mΩ (typ.), SOT-89 package	Slightly higher R_CE(sat) and lower f_T (100 MHz vs. 145 MHz); identical thermal footprint but no ceramic PCB derating data published.	Valid for cost-sensitive industrial controls where 5% efficiency loss is acceptable and RF immunity is not critical.

Compared with PBSS4032NXF, NSS40301MZ4T1G requires ~25% more base current for equivalent saturation, while DXTN3020P5-13 trades marginal R_CE(sat) increase for broader distributor availability - both lack the documented 150 °C T_j guarantee and ceramic PCB thermal curves of the Nexperia part.

Availability

PBSS4032NXF is available at Aetrix Electronics and suitable for battery-driven devices, power management subsystems, and charging circuits requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.

Supply support for PBSS4032NXF 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 - including logic, discretes, MOSFETs, and ESD protection devices - serving automotive, industrial, and consumer markets.

PBSS4032NXF belongs to Nexperia's "Low V_CE(sat) Transistor" product line, engineered specifically for energy-efficient power switching in space-constrained, thermally demanding applications such as portable chargers and motor controllers.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum base current is 1 A per datasheet Table 5. However, for continuous DC operation, the recommended I_B is limited by thermal constraints: at I_C = 4.7 A and h_FE = 125 (min), I_B ≈ 38 mA is sufficient for saturation. Exceeding 400 mA continuously risks localized heating at the base-emitter junction and accelerated degradation.

Can PBSS4032NXF replace a MOSFET in 12 V motor drive applications?

Yes - when gate drive voltage is limited (e.g., 3.3 V MCU outputs) or when cost and board space outweigh the need for near-zero gate charge. Its 45 mΩ R_CE(sat) yields similar conduction loss to a 45 mΩ MOSFET at 4 A, but it lacks MOSFET-level switching efficiency above 500 kHz due to minority-carrier storage delay.

Is PBSS4032NXF qualified for automotive applications?

No - per Revision History (Section 14), this part was explicitly changed to non-automotive qualification in the September 2025 revision. Automotive-grade alternatives include the PBSS4032NX-Q series, which undergo AEC-Q101 stress testing and include extended temperature screening and failure analysis reports.

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

On standard FR4 (single-sided, tin-plated), R_th(j-a) = 210 K/W limits P_tot to 600 mW at 25 °C ambient. With a 6 cm² collector pad, R_th(j-a) drops to 75 K/W, raising P_tot to 1650 mW. On ceramic Al₂O₃, R_th(j-a) = 50 K/W supports 2500 mW - enabling full 4.7 A operation without active cooling in high-reliability industrial modules.

PBSS4032NXF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 4.7 A

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 375mV @ 40mA, 4A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 1A, 2V

Power - Max:: 600 mW

Frequency - Transition:: 145MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBSS4032NXF FAQ

1.How can I place an order for PBSS4032NXF through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS4032NXF 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 PBSS4032NXF reliable?

The price and inventory of PBSS4032NXF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4032NXF is usually 5 days.

3.What payment methods are accepted for PBSS4032NXF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4032NXF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS4032NXF?

PBSS4032NXF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS4032NXF 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 PBSS4032NXF?

For technical support, including PBSS4032NXF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4032NXF requirements.

6.How does Aetrix verify that PBSS4032NXF is sourced from the original manufacturer or authorized distributors?

All PBSS4032NXF 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 PBSS4032NXF meets industry standards.

7.What is the process for return or replacement of PBSS4032NXF?

All PBSS4032NXF units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4032NXF, 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 PBSS4032NXF part is unused and in its original packaging.

Return procedure for PBSS4032NXF:

1.Submit a request within 90 days.

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

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