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

Nexperia USA Inc. PBSS305NZ,135

Name: PBSS305NZ,135
Brand: Nexperia USA Inc.
SKU: PBSS305NZ,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PBSS305NZ,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: PBSS305NZ,135.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:23,223

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Product details

Overview

PBSS305NZ,135 from Nexperia is an NPN low V_CEsat Breakthrough In Small Signal (BISS) transistor in SOT223 (SC-73) package, designed for high-voltage switching roles with 80 V V_CEO, 5.1 A continuous I_C, and 40–56 mΩ R_CEsat at 4 A/200 mA drive. It serves as a high-efficiency power switch in DC-DC converters, MOSFET gate drivers, and automotive motor control circuits.

For engineers reviewing the PBSS305NZ,135 datasheet, PBSS305NZ,135 pinout, PBSS305NZ,135 application, or PBSS305NZ,135 equivalent, key selection criteria include verified V_CEsat performance at high current, thermal resistance under FR4 PCB mounting, dual-collector thermal path design, and compatibility with 8 mm tape-and-reel automated assembly.

Technical Context

This BISS transistor uses a proprietary epitaxial structure to achieve low saturation voltage without sacrificing gain or switching speed. Its dual-collector configuration (Pins 2 & 4) enables enhanced thermal dissipation through extended copper land connection on PCBs.

It delivers h_FE = 90–140 at 4 A/2 V, supports fast switching with t_on = 215 ns and t_off = 555 ns under 12.5 V/3 A test conditions, and maintains stable V_BEsat ≤ 1.05 V up to 4 A collector current with 400 mA base drive.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - Maximum blocking voltage in common-emitter configuration, enabling use in 48 V and higher DC bus systems.
I_C	5.1 A - Continuous collector current rating, supporting sustained load switching in motor and power supply applications.
R_CEsat	40–56 mΩ - Low saturation resistance at 4 A/200 mA drive, reducing conduction loss and heat generation vs. standard bipolar transistors.
h_FE	90–140 @ 4 A - High DC current gain at high current, allowing efficient base drive with modest gate-driver IC output capability.
t_off	555 ns - Verified turn-off time under 12.5 V/3 A conditions, enabling operation up to ~300 kHz in hard-switched topologies.
T_j max	150 °C - Maximum junction temperature, permitting reliable operation in under-hood automotive environments with proper PCB heatsinking.

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with integrated heatsink pad; 4-terminal layout optimized for thermal performance on FR4 PCBs. Dual collector terminals (Pins 2 & 4) share internal die connection and must be soldered to the same copper pour.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring ~200 mA peak drive for full saturation at 4 A; low V_BEsat (≤1.05 V) eases driver selection.
2	Collector	Main high-current output terminal; electrically identical to Pin 4 and intended for primary thermal pad connection.
3	Emiter	Reference node for switching; tied to ground or low-side return path; requires low-inductance layout for fast switching.
4	Collector	Secondary collector terminal; must be connected to same PCB copper area as Pin 2 to maintain rated R_th(j-sp) = 15 K/W.

Key Features

Feature	Design Value
Low V_CEsat	160–225 mV @ 4 A/200 mA - Reduces power loss by >50% vs. conventional bipolar transistors at same current, lowering thermal stress.
Dual-collector thermal path	15 K/W R_th(j-sp) - Enables direct junction-to-solder-point heat transfer, improving reliability over single-collector SOT223 devices.
High h_FE at high I_C	90–140 @ 4 A - Maintains strong current amplification under load, minimizing required base drive power and driver complexity.
FR4-compatible power rating	1.7 W P_tot with 6 cm² collector pad - Delivers usable power handling on standard PCBs without ceramic substrates or external heatsinks.

Applications

High-Voltage DC-DC Conversion

Automotive Motor Control

Use Scenario: Step-down converter in 48 V–12 V automotive power distribution module.

IC Role / Device Role / Timing Role: Primary high-side switch operating at 200 kHz with synchronous rectification.

Use Value: 40 mΩ R_CEsat reduces conduction loss to <1.2 W at 4 A, eliminating need for active cooling in compact enclosure.

Use Scenario: Fan speed controller in engine bay HVAC system with ambient up to 105 °C.

IC Role / Device Role / Timing Role: Low-side driver for brushed DC blower motor, PWM-controlled at 10–25 kHz.

Use Value: 150 °C T_j max and stable h_FE at 100 °C enable uninterrupted operation without derating in sealed housing.

High-Voltage MOSFET Gate Driving

Industrial Power Switching

Use Scenario: Totem-pole driver stage for 600 V Si MOSFET in industrial AC-DC front-end.

IC Role / Device Role / Timing Role: Active pull-down element in gate driver output stage, sinking 2 A peak gate current.

Use Value: 555 ns t_off ensures clean gate discharge, preventing shoot-through during high dv/dt transitions.

Use Scenario: Solid-state relay replacement in programmable logic controller (PLC) output module.

IC Role / Device Role / Timing Role: Main load switch controlling 24 V/3 A solenoid or indicator lamp bank.

Use Value: 80 V V_CEO withstands 2× supply voltage transients per IEC 61000-4-4, meeting industrial surge immunity requirements.

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
ZXTN2012Z	60 V V_CEO, 4 A I_C, 65 mΩ R_CEsat - Lower voltage rating and higher saturation resistance.	Not suitable for 48 V+ DC-DC or automotive 60 V load dump scenarios due to reduced blocking margin.	Select only if operating below 40 V and thermal budget allows +30% conduction loss.
MMBT3904DW	40 V V_CEO, 200 mA I_C, no dual-collector thermal path - Standard small-signal transistor, not BISS architecture.	Cannot replace PBSS305NZ,135 in any high-current (>500 mA) or high-voltage (>20 V) application.	Use only for signal-level biasing or logic interfacing; not a functional alternative for power switching.

Compared with ZXTN2012Z and MMBT3904DW, PBSS305NZ,135 uniquely combines 80 V blocking, 5.1 A current, and dual-collector thermal design-making it the only option among the three qualified for automotive-grade 48 V power switching with minimal heatsinking.

Availability

PBSS305NZ,135 is available at Aetrix Electronics and suitable for high-voltage DC-DC conversion, automotive motor control, and industrial power switching requiring stable component supply across production lifecycles.

Supply support for PBSS305NZ,135 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, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.

PBSS305NZ,135 belongs to Nexperia's BISS transistor product line, engineered specifically for high-efficiency, high-current switching in space-constrained power applications where thermal performance and low V_CEsat are critical.

FAQ

What is the maximum safe operating current for PBSS305NZ,135 on a standard FR4 PCB?

The device is rated for 5.1 A continuous collector current when mounted on an FR4 PCB with a 6 cm² collector pad (P_tot = 1.7 W). Without the extended pad, derating to ≤0.7 W limits I_C to approximately 2.2 A at 25 °C ambient. Thermal simulation using R_th(j-a) = 74 K/W is recommended for precise layout validation.

Can Pins 2 and 4 be used independently in circuit design?

No-Pins 2 and 4 are internally shorted collector terminals and must be connected to the same PCB copper area. Using them separately violates the thermal and electrical design intent, risks exceeding R_th(j-sp) specification, and may cause premature failure due to uneven current sharing and localized heating.

How does PBSS305NZ,135 differ from standard bipolar transistors like BC817?

Unlike BC817, PBSS305NZ,135 uses Breakthrough In Small Signal (BISS) technology to achieve 40–56 mΩ R_CEsat at 4 A-roughly 1/3 the saturation resistance of BC817 at comparable current. It also features dual-collector packaging for improved thermal resistance (15 K/W vs. >200 K/W for BC817 in SOT23), enabling higher power density.

Is PBSS305NZ,135 suitable for automotive AEC-Q101 qualification?

Yes-PBSS305NZ,135 is AEC-Q101 qualified per Nexperia's official product documentation. It meets stress testing requirements including HTOL, temperature cycling, and ESD (HBM ≥ 8 kV), making it approved for under-hood and body-control module applications in passenger vehicles and commercial fleets.

PBSS305NZ,135 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:: 270mV @ 255mA, 5.1A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 180 @ 2A, 2V

Power - Max:: 2 W

Frequency - Transition:: 110MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

PBSS305NZ,135 FAQ

1.How can I place an order for PBSS305NZ,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for PBSS305NZ,135 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,135 reliable?

The price and inventory of PBSS305NZ,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBSS305NZ,135 is usually 5 days.

3.What payment methods are accepted for PBSS305NZ,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBSS305NZ,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PBSS305NZ,135?

PBSS305NZ,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PBSS305NZ,135 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,135?

For technical support, including PBSS305NZ,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBSS305NZ,135 requirements.

6.How does Aetrix verify that PBSS305NZ,135 is sourced from the original manufacturer or authorized distributors?

All PBSS305NZ,135 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,135 meets industry standards.

7.What is the process for return or replacement of PBSS305NZ,135?

All PBSS305NZ,135 units undergo pre-shipment inspection (PSI). If there is an issue with PBSS305NZ,135, 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,135 part is unused and in its original packaging.

Return procedure for PBSS305NZ,135:

1.Submit a request within 90 days.

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

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