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Nexperia USA Inc. BCW66FVL
- Part No.:
- BCW66FVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BCW66FVL.pdf
- Description:
- TRANS NPN 45V 0.8A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
BCW66FVL from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in SOT23 (TO-236AB) package, rated for 45 V VCEO, 800 mA continuous IC, and 250 typical hFE at 100 mA. It serves as a compact, automotive-grade switching and amplification device in space-constrained PCBs for low-to-medium power control circuits.
For engineers reviewing the BCW66FVL datasheet, BCW66FVL pinout, BCW66FVL application, or BCW66FVL equivalent, key selection criteria include its AEC-Q101 qualification, SOT23 thermal derating profile, hFE binning consistency across temperature, and saturation voltage performance at 100 mA/10 mA drive.
Technical Context
This discrete NPN bipolar junction transistor operates in linear or saturated switching modes with base-controlled current amplification. Its design supports stable DC gain (hFE = 100–250) across –55 °C to 150 °C ambient, and exhibits VCE(sat) ≤ 350 mV at IC = 100 mA / IB = 10 mA.
Thermal resistance Rth(j-a) is 500 K/W on FR4 PCB with standard footprint, and transient thermal impedance is characterized for pulse durations down to 100 μs. The device complies with IEC 60134 absolute maximum ratings, including 45 V VCEO, 50 V VCBO, and 150 °C Tj.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in switching applications. |
| IC (continuous) | 800 mA - Continuous collector current rating at Tamb ≤ 25 °C; usable up to ~500 mA at 70 °C with derating. |
| hFE | 100–250 - DC current gain at VCE = 1 V, IC = 100 mA, 25 °C; ensures reliable base drive margin in switch designs. |
| VCE(sat) | ≤ 350 mV - Collector-emitter saturation voltage at IC = 100 mA, IB = 10 mA; minimizes conduction loss in active-low switches. |
| Ptot | 250 mW - Total power dissipation on FR4 PCB at 25 °C; sets thermal design baseline for layout and copper area. |
| fT | 100 MHz - Transition frequency at VCE = 5 V, IC = 10 mA; supports audio-frequency and low-speed digital switching. |
Pinout & Package
BCW66FVL is housed in a surface-mount SOT23 (TO-236AB) plastic package with 3 leads, optimized for automated assembly and thermal performance on standard FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires ≥10 mA drive for full saturation at 100 mA load. |
| 2 | Emitter (E) | Reference terminal for biasing; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current terminal; handles switched load current up to 800 mA with defined VCE(sat) and thermal limits. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications per stress test requirements for discrete semiconductors. |
| High hFE binning (F grade) | Guaranteed 100–250 hFE at 100 mA, enabling reduced base drive current and smaller driver circuitry. |
| SOT23 thermal performance | Rth(j-a) = 500 K/W on standard FR4; enables operation up to 70 °C ambient without heatsink in typical layouts. |
| Low VCE(sat) | ≤350 mV at IC/IB = 10, reducing power loss and self-heating during sustained conduction. |
Applications
| Automotive Door Module Control | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving small solenoids and LED indicators in door latch and window control modules. IC Role / Device Role / Timing Role: NPN switch providing low-side load control with fast turn-on/turn-off response. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle life; SOT23 footprint saves board space in multi-function modules. |
Use Scenario: Amplifying weak analog outputs from temperature or pressure sensors before ADC sampling. IC Role / Device Role / Timing Role: Linear-mode common-emitter amplifier with stable hFE across industrial temperature range. Use Value: Tight hFE binning (100–250) reduces calibration drift; low VBE(sat) improves input dynamic range. |
| Consumer Appliance Motor Driver Stage | Power Supply Enable Switch |
|
Use Scenario: Interfacing microcontroller GPIO to brush motor H-bridge enable inputs or fan speed control lines. IC Role / Device Role / Timing Role: Digital interface buffer and level shifter between logic-level MCU and higher-current peripheral. Use Value: 800 mA IC rating supports direct drive of gate drivers or optocouplers; fast fT ensures clean edge integrity. |
Use Scenario: Enabling/disabling auxiliary rails (e.g., 5 V standby → 3.3 V core) in AC-DC and DC-DC converters. IC Role / Device Role / Timing Role: Low-loss series pass switch controlling power domain sequencing. Use Value: VCE(sat) ≤ 350 mV limits dropout and heat generation; TO-236AB package allows dense placement near regulators. |
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 |
|---|---|---|---|
| BCW66G | Higher hFE (160–400); same VCEO, IC, package, and AEC-Q101 rating. | Better suited for low-base-drive designs where gain stability at low IC (<1 mA) matters. | Select when base current budget is constrained and higher gain at light loads improves system efficiency. |
| MMBT3904LT1G | Non-automotive grade; hFE = 100–300; identical SOT23 footprint but no AEC-Q101 qualification. | Limited to commercial/industrial use; not validated for automotive temperature cycling or humidity testing. | Choose only for cost-sensitive non-automotive applications where qualification is not required. |
Compared with BCW66G, BCW66FVL trades peak hFE for tighter mid-range gain consistency; versus MMBT3904LT1G, it adds automotive reliability at minimal footprint and thermal penalty.
Availability
BCW66FVL is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance control systems requiring stable component supply and long-term manufacturability.
Supply support for BCW66FVL 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 components, with leadership in logic, discretes, and MOSFETs for automotive and industrial markets.
The BCW66 series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor portfolio, designed specifically for robust, space-efficient switching and amplification in harsh-environment electronic control units.
FAQ
Is BCW66FVL pin-compatible with BCW66G and BCW66H?
Yes - all BCW66 variants share identical SOT23 (TO-236AB) pinout (1=B, 2=E, 3=C), same mechanical dimensions, and identical solder footprint. Only electrical parameters like hFE binning differ; no layout change is needed when upgrading between F/G/H grades.
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current is 100 mA per datasheet limiting values. For reliable long-term operation, keep continuous IB ≤ 20 mA - sufficient to saturate the device at IC = 100 mA (IC/IB = 5), well within safe thermal limits on standard FR4.
Does BCW66FVL support pulsed operation beyond 800 mA?
Yes - the datasheet specifies ICM = 1 A for single pulses ≤ 1 ms. This enables short-duration surge handling (e.g., relay coil kickback suppression or motor stall current limiting), provided duty cycle remains below 2% to avoid junction overheating.
How does thermal derating affect usable current at 85 °C ambient?
At 85 °C ambient, Ptot derates to ~150 mW (per Figure 1). With VCE(sat) ≈ 0.35 V, max sustainable IC drops to ~430 mA - verified by the 500 mA operational limit shown in typical curves at 85 °C. Layout with 20 mm² copper pour restores ~600 mA capability.
BCW66FVL 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
- Current - Collector (Ic) (Max):
- 800 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 450mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 5µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 100mA, 1V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BCW66FVL FAQ
1.How can I place an order for BCW66FVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BCW66FVL 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 BCW66FVL reliable?
The price and inventory of BCW66FVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW66FVL is usually 5 days.
3.What payment methods are accepted for BCW66FVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW66FVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCW66FVL?
BCW66FVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCW66FVL 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 BCW66FVL?
For technical support, including BCW66FVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW66FVL requirements.
6.How does Aetrix verify that BCW66FVL is sourced from the original manufacturer or authorized distributors?
All BCW66FVL 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 BCW66FVL meets industry standards.
7.What is the process for return or replacement of BCW66FVL?
All BCW66FVL units undergo pre-shipment inspection (PSI). If there is an issue with BCW66FVL, 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 BCW66FVL part is unused and in its original packaging.
Return procedure for BCW66FVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCW66FVL Tags
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