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

Nexperia USA Inc. BCV47-QR

Name: BCV47-QR
Brand: Nexperia USA Inc.
SKU: BCV47-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCV47-QR

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCV47-QR.pdf

Description:: TRANS NPN DARL 60V 0.5A TO-236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCV47-QR from Nexperia is an NPN Darlington transistor in SOT23 (TO-236AB) package, rated for 60 V V_CE, 500 mA continuous collector current, and minimum DC current gain of 2000 at I_C = 500 mA. It is AEC-Q101 qualified and designed for automotive preamplifier input amplification stages requiring high current gain with low base drive.

For engineers reviewing the BCV47-QR datasheet, BCV47-QR pinout, BCV47-QR application, or BCV47-QR equivalent, this device supports low-power analog signal amplification where high h_FE, compact SMD footprint, and automotive-grade reliability are critical - especially in sensor interface and control circuitry with limited drive capability.

Technical Context

The BCV47-QR integrates two cascaded NPN transistors in a monolithic Darlington configuration, delivering ultra-high DC current gain (≥2000 at 500 mA) while maintaining V_CE(sat) ≤ 1 V at I_C = 100 mA / I_B = 1 mA. Its breakdown ratings include V_CBO = 80 V and V_EBO = 10 V, supporting robust operation in noisy automotive environments.

Thermal design is constrained by R_th(j-a) = 500 K/W on FR4 PCB, limiting continuous power dissipation to 250 mW at T_amb ≤ 25 °C. The device operates across T_amb = −65 °C to +150 °C and is qualified per AEC-Q101 for automotive under-hood and body-control applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CE(sat)	≤ 1 V at I_C = 100 mA, I_B = 1 mA - enables low-loss switching and efficient biasing in low-voltage preamp stages
h_FE	≥ 2000 at V_CE = 5 V, I_C = 500 mA - reduces required base drive current by >99% vs. single transistor
V_CES	60 V - supports operation in 12 V/24 V automotive systems with transient margin
I_C	500 mA continuous - sufficient for driving small relays, LEDs, or sensor buffers
P_tot	250 mW at T_amb ≤ 25 °C - defines thermal derating envelope on standard FR4 PCB
T_j max	150 °C - ensures reliability in under-hood ambient conditions up to 125 °C

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body. Designed for reflow and wave soldering per IPC-7095 guidelines.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Input control terminal; requires minimal drive current due to Darlington gain architecture
2	Emitter (E)	Common emitter node; connected to ground or low-side return path in amplifier/switch configurations
3	Collector (C)	Output current terminal; sinks load current up to 500 mA with low saturation voltage

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive use per stress test requirements - eliminates need for customer-level qualification effort
h_FE ≥ 2000 at full rated I_C	Enables direct drive from microcontroller GPIOs without external base resistors or buffer stages
V_CE(sat) ≤ 1 V @ 100 mA	Minimizes power loss and self-heating in linear and switching modes
V_EBO = 10 V	Supports reverse-bias protection in bidirectional signal paths and level-shifting interfaces

Applications

Automotive Sensor Interface

Low-Voltage Relay Driver

Use Scenario: Amplifying weak signals from temperature, pressure, or position sensors in engine control units.

IC Role / Device Role / Timing Role: NPN Darlington preamplifier stage providing high-gain, low-noise signal conditioning before ADC input.

Use Value: Enables direct connection of high-impedance sensors to MCU inputs without op-amp buffering, reducing BOM count and board space.

Use Scenario: Driving 12 V automotive relays (e.g., HVAC fan, lighting control) from low-current MCU outputs.

IC Role / Device Role / Timing Role: High-gain switch replacing discrete transistor pairs or dedicated driver ICs.

Use Value: Eliminates need for external base resistor networks and reduces PCB footprint versus dual-transistor solutions.

Body Control Module Input Buffer

Industrial Pushbutton Interface

Use Scenario: Conditioning mechanical switch inputs (door latch, seatbelt, trunk release) in body control modules.

IC Role / Device Role / Timing Role: Debounced, ESD-hardened input amplifier isolating noisy switch contacts from MCU GPIOs.

Use Value: Provides inherent noise immunity and current gain to tolerate long harness runs and contact bounce without firmware debouncing overhead.

Use Scenario: Interfacing momentary pushbuttons in industrial HMI panels operating from 24 V supply rails.

IC Role / Device Role / Timing Role: Level-shifting and current-amplifying interface between 24 V field side and 3.3 V logic side.

Use Value: Allows direct MCU GPIO control of higher-voltage inputs while meeting IEC 61000-4-2 ESD immunity requirements via internal junction design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCV46-Q	PNP complement; identical package and AEC-Q101 rating but opposite polarity	Used in complementary output stages or high-side switching where PNP topology is required	Select when sourcing matched NPN/PNP pairs for push-pull drivers or differential amplifiers
BC817-40-Q	Single NPN transistor; h_FE = 250–630 (not Darlington); same SOT23 package	Lacks Darlington gain - requires higher base drive current and external biasing components	Choose only if lower V_CE(sat) (<0.7 V) and faster switching are prioritized over gain and drive simplicity

Compared with BCV46-Q and BC817-40-Q, the BCV47-QR uniquely delivers automotive-qualified Darlington gain in SOT23, enabling single-device preamplification and relay driving without added passive components - a trade-off in speed and saturation voltage for extreme current gain and system simplification.

Availability

BCV47-QR is available at Aetrix Electronics and suitable for automotive sensor interface, body control module input buffering, and low-voltage relay driving requiring stable component supply and AEC-Q101 compliance.

Supply support for BCV47-QR 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 semiconductor expert focused on high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer applications.

The BCV47-QR belongs to Nexperia's AEC-Q101-qualified discrete transistor portfolio, engineered specifically for automotive signal amplification and interface functions where high DC gain and compact SMD packaging are mandatory.

FAQ

Is BCV47-QR pin-compatible with BCV47?

Yes, BCV47-QR shares identical SOT23 pinout (Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector) and electrical specifications with BCV47, differing only in enhanced AEC-Q101 qualification and tighter process controls for automotive use. No layout or schematic changes are needed for drop-in replacement in qualified designs.

What is the maximum safe continuous collector current at 85 °C ambient?

At T_amb = 85 °C, derating applies: P_tot drops to ~125 mW (50% of 250 mW), limiting I_C to approximately 250 mA assuming V_CE(sat) ≈ 0.9 V. This is confirmed by thermal resistance R_th(j-a) = 500 K/W and T_j limit of 150 °C.

Can BCV47-QR be used in linear amplifier mode with V_CE = 5 V?

Yes - the datasheet specifies h_FE = 10,000 at V_CE = 5 V and I_C = 100 mA, confirming stable linear operation. However, power dissipation must remain within P_tot limits: at 5 V × 100 mA = 500 mW, active cooling or reduced current is required to avoid thermal runaway.

Does BCV47-QR have built-in ESD protection?

No integrated ESD protection diodes are specified in the datasheet. The device relies on junction-level robustness (V_EBO = 10 V, V_CE = 60 V) and qualifies to AEC-Q101 HBM Class 2 (≥2 kV), but external TVS or RC filtering is recommended for I/O lines exposed to connectors or long traces in automotive harnesses.

BCV47-QR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN - Darlington

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

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 1mA, 100mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 10000 @ 100mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BCV47-QR FAQ

1.How can I place an order for BCV47-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for BCV47-QR 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 BCV47-QR reliable?

The price and inventory of BCV47-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCV47-QR is usually 5 days.

3.What payment methods are accepted for BCV47-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCV47-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCV47-QR?

BCV47-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCV47-QR 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 BCV47-QR?

For technical support, including BCV47-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCV47-QR requirements.

6.How does Aetrix verify that BCV47-QR is sourced from the original manufacturer or authorized distributors?

All BCV47-QR 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 BCV47-QR meets industry standards.

7.What is the process for return or replacement of BCV47-QR?

All BCV47-QR units undergo pre-shipment inspection (PSI). If there is an issue with BCV47-QR, 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 BCV47-QR part is unused and in its original packaging.

Return procedure for BCV47-QR:

1.Submit a request within 90 days.

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

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