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

onsemi NSVBCH817-40LT1G

Name: NSVBCH817-40LT1G
Brand: onsemi
SKU: NSVBCH817-40LT1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NSVBCH817-40LT1G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: NSVBCH817-40LT1G.pdf

Description:: TRANS NPN 45V 0.5A SOT23-3

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Product details

Overview

NSVBCH817-40LT1G from onsemi is an AEC-Q101 qualified NPN silicon general-purpose transistor in SOT-23 package, rated for 45 V V_CEO, 500 mA I_C, and 175 °C T_J(max). It delivers h_FE = 250–600 at I_C = 500 mA / V_CE = 1.0 V and V_CE(sat) ≤ 0.7 V under same conditions-optimized for automotive load switching and industrial signal amplification.

For engineers reviewing the NSVBCH817-40LT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its high-temperature operation (−55 °C to +175 °C), AEC-Q101 qualification, Pb-free RoHS-compliant SOT-23 footprint, and guaranteed DC current gain range across production lots.

Technical Context

This NPN bipolar junction transistor operates in linear or saturation mode with a f_T of 100 MHz at I_C = 10 mA / V_CE = 5.0 V, supporting medium-speed switching up to ~10 MHz in practical designs. Its low V_BE(on) ≤ 1.2 V at I_C = 500 mA enables efficient drive from 3.3 V or 5 V logic sources.

Thermal design is enabled by R_JA = 330 °C/W on alumina substrate and 400 °C/W on FR-5 board, with derating of 1.8 mW/°C (alumina) or 1.3 mW/°C (FR-5). The device sustains 1 A peak collector current and maintains safe operating area integrity up to 100 ms pulses per Figure 24.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum voltage sustainable between collector and emitter with base open; defines maximum supply rail compatibility in switch applications.
I_C (continuous)	500 mA - Continuous DC collector current rating; sets upper bound for steady-state load driving capability without thermal runaway.
h_FE	250–600 - Guaranteed DC current gain range at I_C = 500 mA / V_CE = 1.0 V; ensures predictable base drive requirements across temperature and lot variation.
V_CE(sat)	≤ 0.7 V - Maximum saturation voltage at I_C = 500 mA / I_B = 50 mA; directly determines conduction loss and heat generation in switching use cases.
T_J(max)	+175 °C - Maximum junction temperature rating; enables deployment in under-hood automotive, motor control, and high-ambient industrial environments.
f_T	100 MHz - Current-gain bandwidth product at I_C = 10 mA / V_CE = 5.0 V; indicates usable small-signal amplification or switching speed ceiling.
C_obo	10 pF - Output capacitance at V_CB = 10 V / f = 1 MHz; impacts high-frequency switching transitions and EMI behavior in PWM circuits.

Pinout & Package

SOT-23 (TO-236) package, 2.90 × 1.30 × 1.00 mm, 3-pin surface-mount outline (Case 318, Style 6). Marking "6X" identifies NSVBCH817-40LT1G on top surface.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires ≥50 mA base drive for full saturation at 500 mA collector load.
2	Emitter	Common reference terminal; tied to ground or low-side return path in most switching configurations.
3	Collector	High-current output node; connects to load (e.g., relay coil, LED string, MOSFET gate) and supply rail.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including HTOL, TC, HAST, and ESD testing-enables use in engine control, body electronics, and ADAS subsystems.
175 °C T_J(max)	Supports operation in high-ambient environments without derating below rated current, reducing need for heatsinking in space-constrained modules.
Pb-free, Halogen-free, RoHS compliant	Meets global environmental compliance mandates and eliminates hazardous substance risks in manufacturing and end-of-life handling.
h_FE binning (40 variant)	Guaranteed minimum h_FE = 250 at I_C = 500 mA ensures consistent base drive sizing across production batches-reducing design margin uncertainty.
SOT-23 footprint	Standardized 3-pin package compatible with automated pick-and-place and reflow processes; enables high-density PCB layouts and cost-effective assembly.

Applications

Automotive Load Switching	Industrial Signal Amplification
Use Scenario: Driving 12 V solenoid valves or fuel injector coils in engine management systems. IC Role / Device Role / Timing Role: NPN switch controlling high-side or low-side loads via microcontroller GPIO. Use Value: Low V_CE(sat) ≤ 0.7 V minimizes power loss and self-heating during continuous 500 mA operation at 125 °C ambient.	Use Scenario: Level-shifting and current boosting for analog sensor outputs in PLC I/O modules. IC Role / Device Role / Timing Role: Linear amplifier stage providing gain and drive strength to interface with ADC inputs. Use Value: Stable h_FE over −40 °C to +125 °C ensures consistent signal fidelity across industrial temperature ranges.
LED Driver Circuitry	Motor Control Feedback Stage
Use Scenario: Constant-current switching for indicator LEDs and backlight strings in dashboard displays. IC Role / Device Role / Timing Role: Saturated switch regulating LED current through series resistor or sense feedback. Use Value: Tight V_BE(on) ≤ 1.2 V allows direct drive from 3.3 V MCU pins without level translation, simplifying BOM.	Use Scenario: Isolating and conditioning Hall-effect sensor signals in BLDC motor controllers. IC Role / Device Role / Timing Role: Active buffer amplifying low-amplitude sensor pulses before digital capture. Use Value: 100 MHz f_T supports clean amplification of fast edge transitions (<100 ns rise time) without distortion.

Automotive Load Switching

Industrial Signal Amplification

Use Scenario: Driving 12 V solenoid valves or fuel injector coils in engine management systems.

IC Role / Device Role / Timing Role: NPN switch controlling high-side or low-side loads via microcontroller GPIO.

Use Value: Low V_CE(sat) ≤ 0.7 V minimizes power loss and self-heating during continuous 500 mA operation at 125 °C ambient.

Use Scenario: Level-shifting and current boosting for analog sensor outputs in PLC I/O modules.

IC Role / Device Role / Timing Role: Linear amplifier stage providing gain and drive strength to interface with ADC inputs.

Use Value: Stable h_FE over −40 °C to +125 °C ensures consistent signal fidelity across industrial temperature ranges.

LED Driver Circuitry

Motor Control Feedback Stage

Use Scenario: Constant-current switching for indicator LEDs and backlight strings in dashboard displays.

IC Role / Device Role / Timing Role: Saturated switch regulating LED current through series resistor or sense feedback.

Use Value: Tight V_BE(on) ≤ 1.2 V allows direct drive from 3.3 V MCU pins without level translation, simplifying BOM.

Use Scenario: Isolating and conditioning Hall-effect sensor signals in BLDC motor controllers.

IC Role / Device Role / Timing Role: Active buffer amplifying low-amplitude sensor pulses before digital capture.

Use Value: 100 MHz f_T supports clean amplification of fast edge transitions (<100 ns rise time) without distortion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC817-40LT1G	Non-automotive grade; identical electrical specs but lacks AEC-Q101 qualification and NSV prefix traceability.	Not suitable for automotive safety-critical or PPAP-controlled programs; acceptable for commercial/industrial use.	Select BC817-40LT1G only when AEC-Q101 compliance is not required and cost optimization is prioritized.
MMBT4401LT1G	Higher V_CEO = 40 V (vs. 45 V), lower h_FE min = 100 at I_C = 150 mA, and no AEC-Q101 certification.	Less margin for 45 V transients; requires higher base drive for same collector current due to lower gain.	Choose MMBT4401LT1G only if legacy design reuse or second-source availability outweighs gain and voltage margin needs.

Compared with BC817-40LT1G and MMBT4401LT1G, NSVBCH817-40LT1G provides verified automotive qualification, tighter h_FE binning, and higher V_CEO-making it the sole choice for new AEC-Q101-compliant designs requiring guaranteed 500 mA switching at 45 V.

Availability

NSVBCH817-40LT1G is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controllers, and consumer appliance motor drivers requiring stable component supply and long-term lifecycle support.

Supply support for NSVBCH817-40LT1G 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.

NSVBCH817-40LT1G belongs to onsemi's automotive-qualified general-purpose transistor family, engineered for robustness in harsh environments and designed to meet stringent AEC-Q101 reliability standards for mission-critical electronics.

FAQ

What is the maximum continuous collector current rating for NSVBCH817-40LT1G?

The NSVBCH817-40LT1G has a maximum continuous collector current (I_C) rating of 500 mA at T_A = 25 °C. This rating decreases with rising ambient temperature, derating at 1.3 mW/°C on FR-5 board or 1.8 mW/°C on alumina substrate. At full 500 mA load, NSVBCH817-40LT1G must be operated within its safe operating area (SOA) limits shown in Figure 24 of the datasheet to avoid thermal failure.

Is NSVBCH817-40LT1G pin-compatible with BC817-40LT1G?

Yes, NSVBCH817-40LT1G shares identical SOT-23 pinout (Style 6: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector), mechanical dimensions, and solder footprint with BC817-40LT1G. However, NSVBCH817-40LT1G adds AEC-Q101 qualification, enhanced process controls, and NSV-prefix traceability-making it functionally interchangeable in layout but not substitutable without qualification in automotive programs.

What does the "NSV" prefix indicate on NSVBCH817-40LT1G?

The "NSV" prefix on NSVBCH817-40LT1G denotes onsemi's automotive and mission-critical product line, signifying AEC-Q101 qualification, PPAP capability, unique site and change control, and extended temperature validation (−55 °C to +175 °C). It distinguishes NSVBCH817-40LT1G from commercial-grade variants like BC817-40LT1G and confirms compliance with automotive supply chain requirements.

Can NSVBCH817-40LT1G be used in linear amplifier configurations?

Yes, NSVBCH817-40LT1G supports linear operation with verified h_FE stability across I_C = 1 mA to 500 mA and temperature range −55 °C to +175 °C. Its f_T = 100 MHz and low C_obo = 10 pF enable usable bandwidth in low-noise preamplifier or driver stages, though thermal management must account for dissipation in Class-A biasing.

What is the guaranteed DC current gain (h_FE) range for NSVBCH817-40LT1G at 500 mA collector current?

At I_C = 500 mA and V_CE = 1.0 V, NSVBCH817-40LT1G guarantees h_FE ≥ 250 (minimum), with typical values reaching 400–600. This binning ('40' suffix) ensures predictable base drive requirements-e.g., 50 mA I_B suffices for full saturation-critical for deterministic design in automotive and industrial control systems.

NSVBCH817-40LT1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 700mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 250 @ 100mA, 1V

Power - Max:: 225 mW

Frequency - Transition:: 100MHz

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3 (TO-236)

NSVBCH817-40LT1G FAQ

1.How can I place an order for NSVBCH817-40LT1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NSVBCH817-40LT1G 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 NSVBCH817-40LT1G reliable?

The price and inventory of NSVBCH817-40LT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSVBCH817-40LT1G is usually 5 days.

3.What payment methods are accepted for NSVBCH817-40LT1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSVBCH817-40LT1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NSVBCH817-40LT1G?

NSVBCH817-40LT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NSVBCH817-40LT1G 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 NSVBCH817-40LT1G?

For technical support, including NSVBCH817-40LT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSVBCH817-40LT1G requirements.

6.How does Aetrix verify that NSVBCH817-40LT1G is sourced from the original manufacturer or authorized distributors?

All NSVBCH817-40LT1G 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 NSVBCH817-40LT1G meets industry standards.

7.What is the process for return or replacement of NSVBCH817-40LT1G?

All NSVBCH817-40LT1G units undergo pre-shipment inspection (PSI). If there is an issue with NSVBCH817-40LT1G, 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 NSVBCH817-40LT1G part is unused and in its original packaging.

Return procedure for NSVBCH817-40LT1G:

1.Submit a request within 90 days.

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

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