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Nexperia USA Inc. BF820-QVL
- Part No.:
- BF820-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BF820-QVL.pdf
- Description:
- TRANS NPN 300V 0.05A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,434
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Product details
Overview
BF820-QVL from Nexperia is an NPN high-voltage transistor in SOT23 package, rated for 300 V VCBO/VCEO, 50 mA IC, and 60 MHz fT, with AEC-Q101 qualification for automotive signal switching in telephony and professional comms equipment.
For engineers reviewing the BF820-QVL datasheet, BF820-QVL pinout, BF820-QVL application, or BF820-QVL equivalent, key selection criteria include high-voltage blocking capability (300 V), low-current switching (≤50 mA), thermal resistance (500 K/W on FR4), and automotive-grade reliability per AEC-Q101.
Technical Context
This device operates as a high-voltage, low-current NPN switching transistor with open-base collector-emitter breakdown at 300 V and base-emitter voltage limit of 5 V. Its DC current gain (hFE ≥ 50 at VCE = 20 V, IC = 25 mA) supports stable biasing in linear or saturated switching modes.
The 60 MHz transition frequency (fT) and 1.6 pF feedback capacitance (Cre) indicate suitability for medium-frequency analog amplification and fast-switching applications up to ~10–20 MHz, while its 250 mW power dissipation (at Tamb ≤ 25 °C) constrains continuous operation to low-duty-cycle or pulsed use cases.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO / VCEO | 300 V - supports isolation and switching in 200–250 V rail systems without breakdown |
| IC (max) | 50 mA - defines maximum continuous collector current for reliable thermal operation |
| hFE (min) | 50 - ensures sufficient DC gain for base-driven switching with predictable saturation |
| fT | 60 MHz - enables small-signal amplification and switching up to mid-VHF range |
| Cre | 1.6 pF - limits Miller effect, supporting stable high-frequency gain and reduced oscillation risk |
| Rth(j-a) | 500 K/W - indicates thermal performance on standard FR4 PCB; requires layout derating above 25 °C ambient |
| VEBO | 5 V - restricts allowable base drive swing; mandates current-limited or clamped base bias |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), optimized for automated assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; requires current-limited drive due to 5 V VEBO rating |
| 2 | Emitter (E) | Reference node for bias and current return; connected to ground or low-side reference |
| 3 | Collector (C) | High-voltage output node; handles up to 300 V with ≤50 mA continuous current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive temperature cycling, humidity, and mechanical stress per discrete semiconductor standard |
| 300 V high-voltage rating | Enables direct interface with off-line or PoE-derived 100–250 VDC rails without external snubbing |
| SOT23 footprint compatibility | Supports drop-in replacement with industry-standard pick-and-place and reflow processes |
| Low leakage (ICBO ≤ 10 nA @ 200 V) | Minimizes standby power loss in always-on telecom line interface circuits |
Applications
| Telephony Line Interface | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Isolation and ringing detection in analog telephone line cards handling -48 V DC and 90 VAC ring signals. IC Role / Device Role / Timing Role: NPN high-voltage switch controlling relay drivers or optocoupler inputs during ring detection. Use Value: 300 V rating safely withstands peak ring voltages; low ICBO prevents false triggering during idle state. | Use Scenario: Level-shifting and signal inversion for Hall-effect or inductive sensor outputs in engine control modules. IC Role / Device Role / Timing Role: Discrete NPN inverter stage translating 5 V logic to 12 V/24 V automotive bus-compatible levels. Use Value: AEC-Q101 qualification ensures reliability across -40 °C to 150 °C junction range; SOT23 allows dense placement near sensors. |
| Professional Audio Coupling | Industrial PLC Input Isolation |
Use Scenario: DC-blocking and signal coupling in microphone preamplifier stages requiring high-voltage headroom. IC Role / Device Role / Timing Role: Active coupling element in cascode or emitter-follower configurations for impedance matching. Use Value: 60 MHz fT and 1.6 pF Cre preserve audio bandwidth up to 20 kHz with minimal phase shift and distortion. | Use Scenario: Optocoupler driver in 24 V DC industrial input modules interfacing with field switches. IC Role / Device Role / Timing Role: Low-current, high-voltage switch driving LED anode of isolation optocoupler. Use Value: 50 mA IC rating matches typical opto-LED forward current; 300 V C–B rating prevents breakdown during ESD transients on field wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BF821-Q | PNP complement; identical voltage/current ratings but opposite polarity | Used where high-side sourcing or complementary push-pull topology is required | Select when circuit topology demands PNP configuration with matched specs |
| ZTX653 | Higher IC (1 A), lower VCEO (100 V), TO-92 package, no AEC-Q101 | Not suitable for automotive or >100 V applications; better for general-purpose medium-current switching | Choose only for non-automotive, lower-voltage, higher-current designs where SOT23 size is not mandatory |
Compared with BF820-QVL, BF821-Q provides polarity-matched functionality in identical packaging, while ZTX653 trades voltage capability and qualification for higher current and legacy through-hole mounting-making BF820-QVL uniquely suited for space-constrained, high-voltage, automotive-compliant switching.
Availability
BF820-QVL is available at Aetrix Electronics and suitable for telephony line interface, automotive sensor conditioning, professional audio coupling, and industrial PLC input isolation requiring stable component supply and AEC-Q101 compliance.
Supply support for BF820-QVL 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 markets.
The BF820-QVL belongs to Nexperia's AEC-Q101-qualified high-voltage discrete transistor family, designed specifically for robust signal switching in harsh-environment communication and automotive subsystems.
FAQ
Is BF820-QVL pin-compatible with standard SOT23 NPN transistors?
Yes, BF820-QVL uses standard SOT23 pinout (1=Base, 2=Emitter, 3=Collector) and matches JEDEC MO-215 mechanical dimensions. It is mechanically compatible with other SOT23 transistors, though electrical parameters-including 300 V rating and AEC-Q101 qualification-are specific to this device.
What is the maximum safe operating temperature for BF820-QVL?
The absolute maximum junction temperature is 150 °C, with storage and ambient ranges from –65 °C to +150 °C. At 25 °C ambient, full 50 mA current is allowed; derating is required above 25 °C using Rth(j-a) = 500 K/W, reaching zero current at ~125 °C ambient on FR4.
Can BF820-QVL be used in linear amplifier configurations?
Yes-its hFE ≥ 50 at VCE = 20 V and fT = 60 MHz support stable small-signal amplification up to ~10 MHz. However, limited 250 mW power dissipation and thermal resistance require careful bias design and heatsinking for sustained linear operation.
Does BF820-QVL have built-in ESD protection?
No-BF820-QVL does not integrate ESD protection diodes. External TVS or series resistors are recommended for I/O lines exposed to human contact or cable interfaces, especially in telephony or industrial field wiring where ±8 kV HBM transients may occur.
BF820-QVL 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):
- 50 mA
- Voltage - Collector Emitter Breakdown (Max):
- 300 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 30mA
- Current - Collector Cutoff (Max):
- 10nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 50 @ 25mA, 20V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 60MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BF820-QVL FAQ
1.How can I place an order for BF820-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BF820-QVL 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 BF820-QVL reliable?
The price and inventory of BF820-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF820-QVL is usually 5 days.
3.What payment methods are accepted for BF820-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF820-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BF820-QVL?
BF820-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BF820-QVL 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 BF820-QVL?
For technical support, including BF820-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF820-QVL requirements.
6.How does Aetrix verify that BF820-QVL is sourced from the original manufacturer or authorized distributors?
All BF820-QVL 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 BF820-QVL meets industry standards.
7.What is the process for return or replacement of BF820-QVL?
All BF820-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BF820-QVL, 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 BF820-QVL part is unused and in its original packaging.
Return procedure for BF820-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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