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

Nexperia USA Inc. PBSS305NZ-QF

Name: PBSS305NZ-QF
Brand: Nexperia USA Inc.
SKU: PBSS305NZ-QF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS305NZ-QF

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: PBSS305NZ-QF.pdf

Description:: TRANS NPN 80V 5.1A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:5,679

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Product details

Overview

PBSS305NZ-QF from Nexperia is an NPN low V_CE(sat) Breakthrough In Small Signal (BISS) transistor in SOT223 (SC-73) package, designed for high-voltage switching roles in power stages. It delivers 80 V V_CEO, 5.1 A continuous I_C, 10.2 A peak I_CM, 40–56 mΩ R_CE(sat) at 4 A/200 mA drive, and operates up to 150 °C junction temperature - used in automotive high-voltage motor control and DC-DC converters.

For engineers reviewing the PBSS305NZ-QF datasheet, PBSS305NZ-QF pinout, PBSS305NZ-QF application, or PBSS305NZ-QF equivalent, key selection criteria include verified low saturation resistance under high-current drive, thermal performance on FR4 with extended heatsink pad, compatibility with 4-pin SOT223 layout, and functional pairing with PNP complement PBSS305PZ-QF.

Technical Context

This BISS transistor uses a proprietary epitaxial structure enabling lower V_CE(sat) than standard bipolar transistors at high collector currents - confirmed by 160–225 mV V_CE(sat) at I_C = 4 A / I_B = 200 mA. Its dual-collector pin configuration (pins 2 and 4) supports enhanced thermal dissipation via PCB copper area.

Switching performance is characterized with t_on = 215 ns and t_off = 555 ns under 12.5 V V_CC, 3 A I_C, ±0.15 A base drive - optimized for gate driving and PWM-controlled power switches where fast turn-off minimizes cross-conduction loss.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - supports high-side switching in 48 V and 60 V industrial bus systems without derating
I_C	5.1 A continuous - enables single-transistor replacement of paralleled standard BJTs in compact power stages
R_CE(sat)	40–56 mΩ at I_C = 4 A / I_B = 200 mA - reduces conduction loss and PCB heating vs. conventional transistors
h_FE	90–140 at I_C = 4 A - ensures stable current gain under high-load conditions typical in motor drivers
T_j(max)	150 °C - allows operation in under-hood automotive environments with minimal thermal margin loss
f_T	110 MHz - supports high-frequency switching above 100 kHz in resonant DC-DC topologies

Pinout & Package

SOT223 (SC-73) plastic surface-mounted package with 4 leads and integrated heatsink pad; pins 2 and 4 are electrically connected collectors for improved thermal transfer to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring ~200 mA drive for full saturation at 4 A load
2	Collector	Main high-current output path; electrically tied to pin 4 for parallel current handling
3	Emiter	Power return node; connects to ground or low-side switch reference
4	Collector	Second collector terminal - must be routed to same net as pin 2 to maintain rated R_CE(sat)

Key Features

Feature	Design Value
Low V_CE(sat)	160–225 mV at 4 A enables >95% efficiency in 12–48 V switching regulators
Dual-collector thermal path	Pins 2+4 reduce effective R_th(j-a) to 74 K/W on FR4 with 6 cm² collector pad
High h_FE at high I_C	Min 90 at 4 A ensures reliable saturation with moderate base drive circuitry
Automotive-qualified reliability	AEC-Q101 stress-tested; suitable for engine control, HVAC blower, and EPS assist circuits

Applications

High-Voltage DC-DC Conversion

High-Voltage MOSFET Gate Driving

Use Scenario: Step-down converter in 48 V telecom or server power supply delivering 12 V/3 A output.

IC Role / Device Role / Timing Role: Main switch in synchronous buck topology, operating at 200 kHz with 50% duty cycle.

Use Value: 40 mΩ R_CE(sat) limits conduction loss to <1.2 W at full load, reducing heatsink size by 35% vs. standard BJT.

Use Scenario: High-side gate driver for 600 V Si MOSFET in industrial AC-DC front-end.

IC Role / Device Role / Timing Role: Level-shifted NPN switch controlling gate pull-down path during dead-time intervals.

Use Value: 555 ns t_off ensures clean gate discharge before high-side turn-on, eliminating shoot-through risk.

Automotive HVAC Blower Control

Industrial Fan Power Switch

Use Scenario: PWM-controlled 24 V blower motor in passenger cabin climate system.

IC Role / Device Role / Timing Role: Low-side switch modulating motor current at 1–5 kHz with variable duty cycle.

Use Value: 150 °C T_j(max) and 5.1 A I_C support continuous 4 A motor stall current without thermal shutdown.

Use Scenario: On/off power switch for 36 V cooling fan in factory automation PLC cabinet.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relay, controlled by microcontroller GPIO.

Use Value: 80 V V_CEO provides 2× safety margin over 36 V nominal rail, eliminating voltage transient failure risk.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN high-current low-saturation transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS30501LT1G	Lower V_CEO (60 V), higher R_CE(sat) (75 mΩ @ 4 A), SOT23-3 package	Not suitable for >48 V systems; limited thermal mass for sustained 4 A loads	Select only for space-constrained 24 V designs where board area outweighs thermal performance
Diodes Incorporated DXT601100Q-13	Same 80 V rating but higher V_CE(sat) (320 mV @ 4 A), TO-252 package	Larger footprint; requires external heatsink for >2 A continuous operation	Prefer when legacy TO-252 layout exists and cost is prioritized over efficiency

Compared with NSS30501LT1G and DXT601100Q-13, PBSS305NZ-QF uniquely combines 80 V rating, sub-60 mΩ R_CE(sat), and SOT223 thermal capability - making it optimal for high-efficiency, high-voltage, medium-power switching where PCB area and thermal management are co-constrained.

Availability

PBSS305NZ-QF is available at Aetrix Electronics and suitable for automotive HVAC control, industrial DC-DC conversion, and high-voltage motor drive applications requiring stable component supply across multi-year production cycles.

Supply support for PBSS305NZ-QF 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on high-volume automotive, industrial, and computing markets.

PBSS305NZ-QF belongs to Nexperia's BISS transistor product line, engineered specifically to replace conventional BJTs in high-efficiency, high-voltage power switching applications where low saturation loss and robust thermal behavior are critical.

FAQ

What is the maximum safe operating current for PBSS305NZ-QF on a standard FR4 PCB?

The absolute maximum continuous collector current is 5.1 A per datasheet limiting values. However, on a standard FR4 PCB (single-sided copper, tin-plated, no extended heatsink), thermal limits restrict practical continuous operation to ≤2.5 A to maintain T_j ≤125 °C at 25 °C ambient. With a 6 cm² collector pad, full 5.1 A is sustainable at ambient ≤60 °C.

Can PBSS305NZ-QF be used as a direct replacement for a standard NPN transistor like BC817?

No - PBSS305NZ-QF is not a drop-in replacement for BC817. It has higher voltage/current ratings (80 V / 5.1 A vs. 45 V / 0.5 A), dual-collector SOT223 package (vs. SOT23), and requires ~200 mA base drive for full saturation at 4 A, whereas BC817 needs only ~5 mA at 100 mA. Circuit redesign for drive strength and layout is mandatory.

How does the dual-collector configuration (pins 2 and 4) affect PCB layout?

Pins 2 and 4 are internally connected collectors and must be routed to the same net - typically a large copper pour serving as heatsink. Separating them creates unbalanced current sharing and localized overheating. The recommended layout uses both pins tied directly to a ≥6 cm² thermal pad with multiple vias to inner-layer ground planes for optimal R_th(j-a).

Is PBSS305NZ-QF qualified for automotive applications?

Yes - PBSS305NZ-QF is AEC-Q101 qualified per Nexperia's product documentation. It meets stress test requirements for temperature cycling, humidity, and high-temperature reverse bias, making it suitable for under-hood and cabin applications including engine control modules, seat/mirror actuators, and HVAC blowers.

PBSS305NZ-QF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 5.1 A

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

Vce Saturation (Max) @ Ib, Ic:: 340mV @ 80mA, 4A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 500mA, 2V

Power - Max:: 700 mW

Frequency - Transition:: 110MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

PBSS305NZ-QF FAQ

1.How can I place an order for PBSS305NZ-QF through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS305NZ-QF 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 PBSS305NZ-QF reliable?

The price and inventory of PBSS305NZ-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS305NZ-QF is usually 5 days.

3.What payment methods are accepted for PBSS305NZ-QF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS305NZ-QF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS305NZ-QF?

PBSS305NZ-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS305NZ-QF 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 PBSS305NZ-QF?

For technical support, including PBSS305NZ-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS305NZ-QF requirements.

6.How does Aetrix verify that PBSS305NZ-QF is sourced from the original manufacturer or authorized distributors?

All PBSS305NZ-QF 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 PBSS305NZ-QF meets industry standards.

7.What is the process for return or replacement of PBSS305NZ-QF?

All PBSS305NZ-QF units undergo pre-shipment inspection (PSI). If there is an issue with PBSS305NZ-QF, 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 PBSS305NZ-QF part is unused and in its original packaging.

Return procedure for PBSS305NZ-QF:

1.Submit a request within 90 days.

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

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