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

onsemi NSVMMBT4401WT1G

Name: NSVMMBT4401WT1G
Brand: onsemi
SKU: NSVMMBT4401WT1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NSVMMBT4401WT1G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: NSVMMBT4401WT1G.pdf

Description:: TRANS NPN 40V 0.6A SC70-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NSVMMBT4401WT1G from onsemi is an automotive-grade NPN silicon switching transistor in SC−70 (SOT−323) package, rated for V_CEO = 40 V, I_C = 600 mA, and f_T = 250 MHz, with AEC−Q101 qualification and 4 kV HBM ESD rating - used in low-power load switching and digital logic interface circuits.

For engineers reviewing the NSVMMBT4401WT1G datasheet, pinout, applications, or equivalent options, key selection criteria include saturation voltage at 150 mA/15 mA drive, DC current gain across 0.1–500 mA, thermal resistance of 833°C/W on FR−5 board, and SC−70 footprint compatibility in space-constrained PCB designs.

Technical Context

This device operates as a general-purpose NPN bipolar junction transistor optimized for fast switching in automotive and industrial control applications. Its design supports V_CE(sat) ≤ 0.4 V at I_C = 150 mA / I_B = 15 mA and t_s ≤ 225 ns under V_CC = 30 V, IC/IB = 10 conditions.

It delivers h_FE = 40–300 across collector currents from 0.1 mA to 500 mA, with C_cb ≤ 6.5 pF and C_eb ≤ 30 pF at specified bias points, enabling stable performance in high-frequency signal routing and pulse-width modulation drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - maximum safe collector-emitter voltage before breakdown in common-emitter configuration
I_C (continuous)	600 mA - continuous collector current handling capacity at T_A = 25°C
V_CE(sat)	0.4 V @ I_C = 150 mA, I_B = 15 mA - low saturation voltage enables efficient switching with minimal power loss
f_T	250 MHz - transition frequency defines usable bandwidth for small-signal amplification or RF switching
R_JA	833°C/W - thermal resistance from junction to ambient on FR−5 board, critical for derating in compact layouts
ESD Rating	4 kV HBM - meets automotive-level electrostatic discharge immunity per AEC−Q101
Package	SC−70 (SOT−323) - 3-pin surface-mount package with 1.25 mm × 2.1 mm footprint for high-density routing

Pinout & Package

NSVMMBT4401WT1G uses the SC−70 (SOT−323) plastic surface-mount package with gull-wing leads and moisture sensitivity level 1. The case outline matches ON Semiconductor's CASE 419, STYLE 3.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal for forward-biased base-emitter junction; requires ~0.75–0.95 V to saturate transistor
2	Emitter	Current return path; connected to ground or low-side reference in common-emitter switch configurations
3	Collector	Output terminal carrying switched load current; rated for up to 40 V and 600 mA continuous

Key Features

Feature	Design Value
AEC−Q101 qualified	Validated for automotive electronics use with PPAP capability and controlled manufacturing site requirements
Pb−Free, RoHS compliant	Meets EU RoHS Directive 2011/65/EU and halogen-free/BFR-free material specifications
Low V_CE(sat)	0.4 V typical at I_C/I_B = 10 ensures minimal conduction loss in 3.3 V/5 V logic-driven loads
Fast switching	t_s ≤ 225 ns and t_f ≤ 30 ns enable reliable operation in PWM frequencies up to ~1 MHz
High f_T	250 MHz allows use in RF pre-driver stages and broadband signal conditioning circuits

Applications

Automotive LED Headlamp Control	Industrial PLC Digital Output Module
Use Scenario: Driving high-brightness LED strings in adaptive front-lighting systems with PWM dimming. IC Role / Device Role / Timing Role: NPN switch controlling LED current path between supply rail and ground, synchronized to MCU PWM signals. Use Value: V_CE(sat) ≤ 0.4 V minimizes heat generation during 100% duty cycle operation; AEC−Q101 qualification ensures reliability over vehicle lifetime.	Use Scenario: Isolating microcontroller GPIO pins from 24 V industrial solenoid loads in programmable logic controllers. IC Role / Device Role / Timing Role: Low-side switch interfacing 3.3 V logic to 24 V field devices via optocoupler-isolated base drive. Use Value: 600 mA I_C rating supports direct drive of small solenoids; SC−70 footprint saves PCB area in multi-channel output modules.
Consumer Appliance Motor Driver Stage	Medical Infusion Pump Valve Actuation
Use Scenario: Controlling brushed DC fan motors in smart HVAC systems using microcontroller-generated PWM. IC Role / Device Role / Timing Role: High-speed switching element in half-bridge auxiliary stage, managing motor coil current direction and magnitude. Use Value: 250 MHz f_T and <20 ns rise time support clean edge transitions at 20 kHz PWM, reducing audible noise and EMI.	Use Scenario: Precisely timing pneumatic valve actuation in battery-powered infusion pumps requiring fail-safe current limiting. IC Role / Device Role / Timing Role: Current-limited switch enabling calibrated fluid flow by modulating valve open duration with µs-level accuracy. Use Value: Tight h_FE distribution (40–300) and stable V_BE(sat) ensure repeatable timing across temperature range (−55°C to +150°C).

Automotive LED Headlamp Control

Industrial PLC Digital Output Module

Use Scenario: Driving high-brightness LED strings in adaptive front-lighting systems with PWM dimming.

IC Role / Device Role / Timing Role: NPN switch controlling LED current path between supply rail and ground, synchronized to MCU PWM signals.

Use Value: V_CE(sat) ≤ 0.4 V minimizes heat generation during 100% duty cycle operation; AEC−Q101 qualification ensures reliability over vehicle lifetime.

Use Scenario: Isolating microcontroller GPIO pins from 24 V industrial solenoid loads in programmable logic controllers.

IC Role / Device Role / Timing Role: Low-side switch interfacing 3.3 V logic to 24 V field devices via optocoupler-isolated base drive.

Use Value: 600 mA I_C rating supports direct drive of small solenoids; SC−70 footprint saves PCB area in multi-channel output modules.

Consumer Appliance Motor Driver Stage

Medical Infusion Pump Valve Actuation

Use Scenario: Controlling brushed DC fan motors in smart HVAC systems using microcontroller-generated PWM.

IC Role / Device Role / Timing Role: High-speed switching element in half-bridge auxiliary stage, managing motor coil current direction and magnitude.

Use Value: 250 MHz f_T and <20 ns rise time support clean edge transitions at 20 kHz PWM, reducing audible noise and EMI.

Use Scenario: Precisely timing pneumatic valve actuation in battery-powered infusion pumps requiring fail-safe current limiting.

IC Role / Device Role / Timing Role: Current-limited switch enabling calibrated fluid flow by modulating valve open duration with µs-level accuracy.

Use Value: Tight h_FE distribution (40–300) and stable V_BE(sat) ensure repeatable timing across temperature range (−55°C to +150°C).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT4401LT1G	Same die, but in SOT−23 package (larger footprint, higher R_JA = 400°C/W)	Suitable for non-space-constrained boards where thermal margin >2× is required	Select when board layout allows larger package and higher power dissipation is needed
NSVMMBT2222ALT1G	Higher V_CEO = 60 V, lower f_T = 250 MHz (same), h_FE min = 100 @ I_C = 150 mA	Better suited for 48 V industrial bus interfaces requiring higher voltage margin	Choose when system voltage exceeds 40 V or tighter h_FE consistency is required at mid-current range

Compared with MMBT4401LT1G, NSVMMBT4401WT1G offers superior board-area efficiency and automotive qualification; versus NSVMMBT2222ALT1G, it trades voltage headroom for smaller size and identical RF performance - making it optimal for 12–24 V automotive body electronics with strict PCB real estate limits.

Availability

NSVMMBT4401WT1G is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC outputs, consumer appliance motor drives, and medical infusion pump actuation requiring stable component supply and AEC−Q101 compliance.

Supply support for NSVMMBT4401WT1G 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.

The NSVMMBT4401WT1G belongs to onsemi's automotive-qualified discrete transistor portfolio, designed specifically for robust, high-reliability switching in harsh-environment electronic control units.

FAQ

What is the maximum operating temperature for NSVMMBT4401WT1G?

The NSVMMBT4401WT1G has a junction and storage temperature range of −55°C to +150°C. Its thermal resistance R_JA is 833°C/W on FR−5 board, so maximum continuous power dissipation at 25°C ambient is 150 mW - derating is required above 25°C per the datasheet's thermal curve. Always verify actual board-level thermal performance in final NSVMMBT4401WT1G layout.

Is NSVMMBT4401WT1G pin-compatible with standard MMBT4401 variants?

No - NSVMMBT4401WT1G uses the SC−70 (SOT−323) package with pin 1 = Base, pin 2 = Emitter, pin 3 = Collector. Standard MMBT4401 variants like MMBT4401LT1G use SOT−23 (pin 1 = Emitter, pin 2 = Base, pin 3 = Collector), so PCB layout and schematic symbols must be updated when substituting NSVMMBT4401WT1G.

Does NSVMMBT4401WT1G support 5 V logic-level drive?

Yes - NSVMMBT4401WT1G achieves full saturation with I_B = 15 mA at I_C = 150 mA, corresponding to ~0.75–0.95 V V_BE(sat). When driven by a 5 V GPIO through a 220 Ω base resistor, it delivers ~18 mA base current, ensuring robust turn-on. For 3.3 V logic, a 100 Ω resistor is recommended to maintain sufficient I_B margin in NSVMMBT4401WT1G designs.

What does the "NSV" prefix indicate on NSVMMBT4401WT1G?

"NSV" denotes onsemi's automotive and high-reliability product line, signifying unique site and process control, AEC−Q101 qualification, PPAP capability, and enhanced traceability - distinguishing NSVMMBT4401WT1G from commercial-grade MMBT4401WT1G parts that lack automotive validation and change control rigor.

Can NSVMMBT4401WT1G replace a MOSFET in low-side switching applications?

NSVMMBT4401WT1G can replace discrete MOSFETs only in low-current (<600 mA), low-voltage (<40 V), and cost-sensitive applications where gate drive simplicity and BJT saturation characteristics are acceptable. Unlike MOSFETs, it requires continuous base current and exhibits higher conduction loss - so NSVMMBT4401WT1G is best for legacy designs or where gate-drive complexity must be avoided, not for high-efficiency or high-frequency SMPS.

NSVMMBT4401WT1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 600 mA

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 750mV @ 50mA, 500mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 1V

Power - Max:: 150 mW

Frequency - Transition:: 250MHz

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-3 (SOT323)

NSVMMBT4401WT1G FAQ

1.How can I place an order for NSVMMBT4401WT1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NSVMMBT4401WT1G 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 NSVMMBT4401WT1G reliable?

The price and inventory of NSVMMBT4401WT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSVMMBT4401WT1G is usually 5 days.

3.What payment methods are accepted for NSVMMBT4401WT1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSVMMBT4401WT1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NSVMMBT4401WT1G?

NSVMMBT4401WT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NSVMMBT4401WT1G 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 NSVMMBT4401WT1G?

For technical support, including NSVMMBT4401WT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSVMMBT4401WT1G requirements.

6.How does Aetrix verify that NSVMMBT4401WT1G is sourced from the original manufacturer or authorized distributors?

All NSVMMBT4401WT1G 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 NSVMMBT4401WT1G meets industry standards.

7.What is the process for return or replacement of NSVMMBT4401WT1G?

All NSVMMBT4401WT1G units undergo pre-shipment inspection (PSI). If there is an issue with NSVMMBT4401WT1G, 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 NSVMMBT4401WT1G part is unused and in its original packaging.

Return procedure for NSVMMBT4401WT1G:

1.Submit a request within 90 days.

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

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