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

Nexperia USA Inc. PBSS4480XZ

Name: PBSS4480XZ
Brand: Nexperia USA Inc.
SKU: PBSS4480XZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS4480XZ

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PBSS4480XZ.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PBSS4480XZ from Nexperia is an AEC-Q101-qualified NPN low V_CE(sat) transistor in SOT89 package, designed for medium-power switching applications requiring high current (I_C = 4 A), low saturation resistance (R_CE(sat) = 40–54 mΩ at I_C = 5 A), and robust 80 V V_CEO rating - used in DC-DC converters, motor drivers, and battery chargers.

For engineers reviewing the PBSS4480XZ datasheet, PBSS4480XZ pinout, PBSS4480XZ application, or PBSS4480XZ equivalent, this page delivers verified electrical parameters, thermal derating behavior, junction-to-solder-point resistance (16 K/W), and validated automotive-grade reliability data - all critical for thermal design, layout planning, and functional safety validation.

Technical Context

This device operates as a medium-power NPN bipolar junction transistor with optimized base drive efficiency: h_FE ranges from 80 to 140 at I_C = 4 A, enabling low base current (200 mA) for full saturation. Its low V_CE(sat) (170–230 mV) and R_CE(sat) minimize conduction losses in pulsed-switching topologies.

Thermal performance is defined by mounting-dependent R_th(j-a): 50 K/W on standard FR4, 90 K/W with 1 cm² collector pad, and 80 K/W on ceramic PCB - supporting stable operation up to T_j = 150 °C. It is qualified per AEC-Q101 for automotive ambient temperature range (−65 °C to +150 °C).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - supports 24 V and 48 V bus systems with margin for transients and inductive kickback
I_C (max)	4 A continuous - enables direct driving of small fans, solenoids, and LED strings without external driver stages
R_CE(sat)	40–54 mΩ at I_C = 5 A - reduces power loss to ≤270 mW under full load, easing thermal management
h_FE	80–140 at I_C = 4 A - allows efficient base drive with low-current microcontrollers or logic-level signals
V_BE(sat)	0.95–1.05 V at I_C = 4 A / I_B = 400 mA - ensures predictable base voltage drop for accurate current mirror or bias network design
f_T	120–150 MHz - sufficient for PWM switching up to ~1 MHz with minimal gain roll-off in linear or quasi-resonant modes
T_j(max)	150 °C - enables operation in under-hood automotive environments and sealed industrial enclosures

Pinout & Package

SOT89 (SC-62) plastic surface-mount package: 3-lead, 1.5 mm pitch, 4.5 mm × 2.5 mm × 1.5 mm body; collector tab thermally and electrically connected to Pin 2 for PCB heat spreading.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current return path; tied to ground or low-side reference; requires low-inductance trace routing for fast switching
2	Collector	Main power output node; electrically and thermally connected to exposed copper pad; must be routed to high-current traces
3	Base	Control input; driven with ≥200 mA peak for full saturation; requires series resistor to limit drive current and prevent oscillation

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive use including temperature cycling, HTRB, and ESD testing - eliminates requalification effort for Tier 1 designs
Low R_CE(sat) (40 mΩ typ.)	Reduces conduction loss by >40% vs. standard BJT alternatives at 4 A - directly lowers heatsink requirements and improves system efficiency
High h_FE at high current	Enables direct MCU GPIO drive without buffer stage - simplifies bill-of-materials and board space in space-constrained modules
Thermally enhanced SOT89	Exposed collector pad achieves R_th(j-sp) = 16 K/W - enables reliable 4 A operation on 6 cm² FR4 copper without forced air cooling
Robust transient ratings	I_CM = 10 A (1 ms pulse) and V_CBO = 80 V - withstands inductive turn-off spikes in relay and motor control circuits

Applications

Motor & Fan Drivers

Strobe Flash Units

Use Scenario: Driving 12 V/24 V DC brushless fans or small PMDC motors in automotive HVAC or industrial cooling systems.

IC Role / Device Role: Low-side switch controlling motor current path with fast turn-on/turn-off and minimal voltage drop.

Use Value: 170–230 mV V_CE(sat) limits power dissipation to <270 mW at 4 A, eliminating need for heatsinks in compact enclosures.

Use Scenario: High-current flash charging and discharge control in DSLR cameras and mobile phone camera modules.

IC Role / Device Role: Primary switch in capacitor discharge circuit delivering 3–5 A pulses for <10 ms exposure bursts.

Use Value: 10 A I_CM rating and 54 mΩ R_CE(sat) ensure consistent light intensity across battery voltage range (3.0–4.2 V).

Inverter for TFT Displays

LAN/ADSL Power Switch

Use Scenario: Generating high-voltage AC for LCD backlight inverters in automotive infotainment displays.

IC Role / Device Role: Half-bridge low-side switch operating at 20–100 kHz with controlled dI/dt to reduce EMI.

Use Value: f_T ≥120 MHz and low C_c (35–50 pF) support clean square-wave switching with minimal ringing and gate drive loss.

Use Scenario: Enabling/disabling auxiliary power rails in Ethernet PHY and ADSL line interface units.

IC Role / Device Role: Hot-swap protection and sequencing switch for 5 V/12 V isolated supplies feeding analog front-end ICs.

Use Value: 80 V V_CEO provides 3× margin over 24 V PoE injectors; AEC-Q101 qualification ensures long-term reliability in telecom infrastructure.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium-power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS40501MR6T1G	Lower V_CEO (60 V), higher R_CE(sat) (65 mΩ), same SOT89 package and I_C rating	Not rated for automotive; limited to industrial/commercial 24 V systems with lower surge immunity	Select when cost sensitivity outweighs automotive qualification and 80 V headroom
Diodes Incorporated DXTN4030Z	Higher V_CEO (100 V), slightly higher R_CE(sat) (58 mΩ), same AEC-Q101 grade and SOT89 footprint	Supports 48 V battery architectures and higher-voltage inverters; wider safe operating area at elevated T_j	Select for 48 V EV subsystems or applications requiring >80 V transient tolerance

Compared with NSS40501MR6T1G, PBSS4480XZ offers 20 V higher blocking voltage and 15 mΩ lower R_CE(sat), improving surge resilience and thermal margin; versus DXTN4030Z, it trades 20 V headroom for 4 mΩ lower saturation resistance and tighter V_BE(sat) tolerance - favoring efficiency-critical 24 V automotive modules.

Availability

PBSS4480XZ is available at Aetrix Electronics and suitable for automotive power management, industrial motor control, and consumer imaging systems requiring stable component supply, AEC-Q101 compliance, and repeatable thermal performance across production batches.

Supply support for PBSS4480XZ 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.

PBSS4480XZ belongs to Nexperia's "Low V_CE(sat) Transistor" product line - engineered specifically for high-efficiency, medium-power switching in automotive and industrial applications where thermal density and drive simplicity are critical.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current (I_B) is 1 A per datasheet Table 5. However, for reliable continuous operation at I_C = 4 A, the recommended base drive is 200 mA (I_C/I_B = 20), ensuring full saturation while maintaining thermal stability and avoiding secondary breakdown. Peak base current may reach 2 A for ≤300 µs pulses.

Can PBSS4480XZ replace a MOSFET in low-side switching applications?

Yes - but only where gate drive voltage is limited (e.g., 3.3 V/5 V logic) and switching frequency is ≤500 kHz. Its low V_CE(sat) and high h_FE enable efficient BJT-based switching without level-shifting, though MOSFETs remain superior above 1 MHz due to zero gate current and lower Q_g.

How does thermal performance change with different PCB copper areas?

R_th(j-a) drops from 225 K/W (standard FR4 footprint) to 90 K/W (1 cm² collector pad) and further to 80 K/W (ceramic PCB). On 6 cm² FR4 copper, R_th(j-a) is 50 K/W - enabling 4 A continuous operation at T_amb = 85 °C without exceeding T_j = 150 °C.

Is PBSS4480XZ pin-compatible with its PNP complement PBSS5480X?

Yes - both share identical SOT89 pinning (Emitter–Collector–Base), allowing symmetrical layout in complementary emitter-follower or push-pull configurations. However, their electrical characteristics differ significantly: PBSS5480X has matching V_CEO (80 V) and I_C (4 A) but inverted polarity and distinct h_FE/V_CE(sat) curves.

PBSS4480XZ 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 A

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

Vce Saturation (Max) @ Ib, Ic:: 270mV @ 500mA, 5A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 1A, 2V

Power - Max:: 550 mW

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

PBSS4480XZ FAQ

1.How can I place an order for PBSS4480XZ through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS4480XZ 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 PBSS4480XZ reliable?

The price and inventory of PBSS4480XZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS4480XZ is usually 5 days.

3.What payment methods are accepted for PBSS4480XZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS4480XZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS4480XZ?

PBSS4480XZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS4480XZ 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 PBSS4480XZ?

For technical support, including PBSS4480XZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS4480XZ requirements.

6.How does Aetrix verify that PBSS4480XZ is sourced from the original manufacturer or authorized distributors?

All PBSS4480XZ 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 PBSS4480XZ meets industry standards.

7.What is the process for return or replacement of PBSS4480XZ?

All PBSS4480XZ units undergo pre-shipment inspection (PSI). If there is an issue with PBSS4480XZ, 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 PBSS4480XZ part is unused and in its original packaging.

Return procedure for PBSS4480XZ:

1.Submit a request within 90 days.

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

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