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

onsemi NSS1C301CTWG

Name: NSS1C301CTWG
Brand: onsemi
SKU: NSS1C301CTWG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NSS1C301CTWG

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: SOT-1023, 4-LFPAK

Datasheet:: NSS1C301CTWG.pdf

Description:: TRANS NPN 100V 3A LFPAK4

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NSS1C301CTWG from onsemi is an NPN bipolar power transistor in the e2PowerEdge family, rated for 100 V V_CEO, 3.0 A continuous collector current, and ultra-low 0.115 V typical V_CE(sat) at 3.0 A/0.3 A drive-designed for high-efficiency, space-constrained DC-DC converters in portable battery-powered devices.

For engineers reviewing the NSS1C301CTWG datasheet, pinout, applications, or equivalent options, key selection criteria include its LFPAK4 5×6 wettable-flank package, AEC-Q101 qualification, 120 MHz f_T, and verified performance under pulsed switching conditions up to 6.0 A peak current.

Technical Context

This device operates as a low-saturation-voltage switching transistor with DC current gain (h_FE) ranging from 80 to 500 across 0.1–3.0 A collector currents at V_CE = 2.0 V, enabling precise base-drive optimization in synchronous rectifier and load-switching topologies.

Its thermal resistance R_JA is 40 °C/W on a 1″² FR-4 copper pad, and it supports safe operating area (SOA) compliance up to 100 V and 3 A in single-pulse mode-critical for transient-heavy automotive powertrain and airbag control unit designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Maximum blocking voltage before breakdown at I_C = 10 mA, enabling use in 48 V and 60 V system rails.
I_C (continuous)	3.0 A - Sustained collector current capability with thermal derating above 25 °C ambient.
V_CE(sat) (typ)	0.115 V at I_C = 3.0 A / I_B = 0.3 A - Reduces conduction loss by >70% vs. standard BJT alternatives in high-current switching nodes.
f_T	120 MHz - Supports stable operation in PWM frequencies up to ~10–20 MHz with adequate gain margin.
R_JA	40 °C/W - Achievable junction-to-ambient thermal resistance with standard 1″² FR-4 copper pad layout.
AEC-Q101	Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC specification.

Pinout & Package

Package: LFPAK4 5×6 mm (Case 760AB), ultra-slim surface-mount package with wettable flanks for automated optical inspection (AOI) in automotive assembly lines.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3 (Emitter)	Emitter connection	Three parallel emitter terminals reduce bond-wire inductance and improve current sharing during fast switching transitions.
4 (Base)	Control input	Single-base terminal optimized for low-inductance gate drive routing; requires ≤1.0 V V_BE(on) at 1.0 A I_C.
5 (Collector)	High-current output	Exposed collector pad forms primary thermal path to PCB; enables direct mounting to large copper pour for thermal management.

Key Features

Feature	Design Value
Ultra-low V_CE(sat)	0.015 V typ at 0.1 A - Enables <10 mW conduction loss in standby-mode power switches.
LFPAK4 wettable flanks	Full-side solder fillet visibility - Meets IPC-A-610 Class 3 AOI requirements for automotive safety-critical modules.
High h_FE at low I_C	500 min at I_C = 0.1 A - Allows minimal base drive current (<200 µA) in low-power sensing or bias circuits.
Pb-free, RoHS-compliant	Halogen-free/BFR-free construction - Complies with EU Directive 2011/65/EU and automotive ELV requirements.

Applications

DC-DC Converter Switch	Automotive Airbag Control Unit
Use Scenario: High-frequency synchronous buck converter in USB-C PD power adapters delivering 20–65 W. IC Role / Device Role / Timing Role: Main switching transistor handling 3 A peak inductor current at 500 kHz–1 MHz PWM. Use Value: 0.115 V V_CE(sat) reduces conduction loss by 450 mW vs. legacy 0.25 V BJT, improving full-load efficiency by ≥1.2%.	Use Scenario: Primary power switch for pyrotechnic squib firing circuit in front-passenger airbag module. IC Role / Device Role / Timing Role: Fast-turn-on, low-loss switch triggered by MCU-controlled pulse within <100 µs safety window. Use Value: 120 MHz f_T and 0.080 V V_CE(sat) at 2 A ensure reliable squib activation with <5 µs delay and minimal energy waste.
Portable Device Power Management	Industrial Motor Driver Stage
Use Scenario: Load switch for main battery rail in digital camera or Bluetooth speaker with 3.7 V Li-ion supply. IC Role / Device Role / Timing Role: Low-R_DS(on) replacement for MOSFET in cost-sensitive, low-voltage systems where gate drive complexity must be avoided. Use Value: 0.045 V V_CE(sat) at 1 A yields <45 mW loss-comparable to logic-level MOSFETs but with simpler drive and no body diode reverse recovery.	Use Scenario: Half-bridge high-side switch in 24 V brushless DC motor driver for HVAC blower fan. IC Role / Device Role / Timing Role: Robust, thermally stable switching element rated for 100 V bus transients and 3 A continuous phase current. Use Value: 150 °C max T_J rating and 40 °C/W R_JA allow operation at 85 °C ambient without forced cooling in sealed enclosures.

DC-DC Converter Switch

Automotive Airbag Control Unit

Use Scenario: High-frequency synchronous buck converter in USB-C PD power adapters delivering 20–65 W.

IC Role / Device Role / Timing Role: Main switching transistor handling 3 A peak inductor current at 500 kHz–1 MHz PWM.

Use Value: 0.115 V V_CE(sat) reduces conduction loss by 450 mW vs. legacy 0.25 V BJT, improving full-load efficiency by ≥1.2%.

Use Scenario: Primary power switch for pyrotechnic squib firing circuit in front-passenger airbag module.

IC Role / Device Role / Timing Role: Fast-turn-on, low-loss switch triggered by MCU-controlled pulse within <100 µs safety window.

Use Value: 120 MHz f_T and 0.080 V V_CE(sat) at 2 A ensure reliable squib activation with <5 µs delay and minimal energy waste.

Portable Device Power Management

Industrial Motor Driver Stage

Use Scenario: Load switch for main battery rail in digital camera or Bluetooth speaker with 3.7 V Li-ion supply.

IC Role / Device Role / Timing Role: Low-R_DS(on) replacement for MOSFET in cost-sensitive, low-voltage systems where gate drive complexity must be avoided.

Use Value: 0.045 V V_CE(sat) at 1 A yields <45 mW loss-comparable to logic-level MOSFETs but with simpler drive and no body diode reverse recovery.

Use Scenario: Half-bridge high-side switch in 24 V brushless DC motor driver for HVAC blower fan.

IC Role / Device Role / Timing Role: Robust, thermally stable switching element rated for 100 V bus transients and 3 A continuous phase current.

Use Value: 150 °C max T_J rating and 40 °C/W R_JA allow operation at 85 °C ambient without forced cooling in sealed enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NSV1C300CTWG	Complementary PNP device in same LFPAK4 package; V_CEO = 100 V, I_C = 3.0 A, V_CE(sat) = 0.125 V typ at 3 A.	Used in complementary push-pull or H-bridge configurations-not a drop-in replacement for NSS1C301CTWG.	Select only when building symmetrical output stages requiring matched NPN/PNP pairs with identical thermal and footprint characteristics.
DMT3006LPS-13	60 V, 3.5 A N-channel MOSFET in PowerDI5060; R_DS(on) = 22 mΩ @ V_GS = 10 V; no gate charge requirement.	Requires 10 V gate drive; lacks inherent current gain-unsuitable for low-voltage MCU GPIO direct drive.	Prefer for higher-frequency (>500 kHz), lower-V_DS applications where gate driver ICs are available and board space allows larger package.

Compared with NSV1C300CTWG and DMT3006LPS-13, NSS1C301CTWG uniquely delivers NPN bipolar switching with ultra-low saturation voltage, AEC-Q101 qualification, and wettable-flank LFPAK4 packaging-making it optimal for automotive and portable power stages where drive simplicity, thermal reliability, and optical inspection compliance are mandatory.

Availability

NSS1C301CTWG is available at Aetrix Electronics and suitable for DC-DC converters, automotive airbag control units, and portable device power management requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for NSS1C301CTWG 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

onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The e2PowerEdge family-including NSS1C301CTWG-is engineered specifically for high-efficiency, high-reliability switching in space-constrained, thermally demanding environments such as automotive powertrain modules and portable consumer electronics.

FAQ

What is the maximum continuous collector current rating for NSS1C301CTWG?

The NSS1C301CTWG is rated for 3.0 A continuous collector current (I_C) at T_C = 25 °C. Derating applies above this temperature-per the datasheet, I_C drops linearly to zero at 150 °C junction temperature. This rating assumes proper PCB copper area (1″² collector pad) and natural convection cooling. The device also supports 6.0 A peak collector current under pulsed conditions (duty cycle ≤ 2%, pulse width ≤ 300 µs).

Is NSS1C301CTWG qualified for automotive applications?

Yes, NSS1C301CTWG is AEC-Q101 qualified and PPAP capable. It meets the stress test requirements for automotive-grade discrete transistors-including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD)-and is manufactured in onsemi's certified automotive production sites. Its LFPAK4 package features wettable flanks required for AOI in safety-critical modules like airbag controllers and instrument clusters.

What is the typical V_CE(sat) of NSS1C301CTWG at full load?

The typical V_CE(sat) of NSS1C301CTWG is 0.115 V at I_C = 3.0 A and I_B = 0.3 A, measured at T_A = 25 °C. This value is confirmed in the Electrical Characteristics table (page 2 of the datasheet) under "ON CHARACTERISTICS." At lower currents-such as 1.0 A with 0.1 A base drive-the typical V_CE(sat) drops to 0.080 V, supporting highly efficient operation across its rated current range.

Does NSS1C301CTWG require a heatsink in standard PCB layouts?

No external heatsink is required for NSS1C301CTWG when mounted on a standard FR-4 PCB with a 1″² (645 mm²) copper collector pad, which achieves R_JA = 40 °C/W. Under these conditions and at 3.0 A continuous current with 0.115 V V_CE(sat), power dissipation is ~345 mW, resulting in ~14 °C junction-to-ambient rise-well within the –55 °C to +150 °C operating range. Smaller pads increase thermal resistance and may necessitate layout optimization.

What package type does NSS1C301CTWG use, and why is it significant?

NSS1C301CTWG uses the LFPAK4 5×6 mm package (Case 760AB), an ultra-slim surface-mount outline with exposed collector pad and wettable flanks. This package enables superior thermal performance versus SO-8 or TO-252, while supporting automated optical inspection in automotive manufacturing. Its 1.15 mm height and 4.90 × 4.15 mm footprint make it ideal for ultra-thin portable electronics where board space and profile are constrained.

NSS1C301CTWG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SOT-1023, 4-LFPAK

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 300mA, 3A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 500mA, 2V

Power - Max:: 1 W

Frequency - Transition:: 120MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: LFPAK4 (5x6)

NSS1C301CTWG FAQ

1.How can I place an order for NSS1C301CTWG through Aetrix?

Please submit a Request for Quotation (RFQ) for NSS1C301CTWG 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 NSS1C301CTWG reliable?

The price and inventory of NSS1C301CTWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSS1C301CTWG is usually 5 days.

3.What payment methods are accepted for NSS1C301CTWG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSS1C301CTWG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NSS1C301CTWG?

NSS1C301CTWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NSS1C301CTWG 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 NSS1C301CTWG?

For technical support, including NSS1C301CTWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSS1C301CTWG requirements.

6.How does Aetrix verify that NSS1C301CTWG is sourced from the original manufacturer or authorized distributors?

All NSS1C301CTWG 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 NSS1C301CTWG meets industry standards.

7.What is the process for return or replacement of NSS1C301CTWG?

All NSS1C301CTWG units undergo pre-shipment inspection (PSI). If there is an issue with NSS1C301CTWG, 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 NSS1C301CTWG part is unused and in its original packaging.

Return procedure for NSS1C301CTWG:

1.Submit a request within 90 days.

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

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