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Diodes Incorporated BAV21HWFQ-7
- Part No.:
- BAV21HWFQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
BAV21HWFQ-7.pdf
- Description:
- DIODE GP 250V 200MA SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:311
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Product details
Overview
BAV21HWFQ-7 from Diodes Incorporated is a surface-mount high-voltage switching diode with 250 V peak repetitive reverse voltage, 100 nA reverse leakage at 200 V, and 50 ns reverse recovery time, optimized for fast transient response in power supply clamp and signal routing circuits in automotive and portable electronics.
For engineers reviewing the BAV21HWFQ-7 datasheet, BAV21HWFQ-7 pinout, BAV21HWFQ-7 application, or BAV21HWFQ-7 equivalent, key selection criteria include reverse breakdown margin, thermal performance in SOD123F package, trr stability across temperature, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This diode employs a planar epitaxial silicon structure to achieve stable 250 V VRRM with low capacitance (5.0 pF at 0 V) and controlled minority-carrier lifetime for consistent 50 ns trr under IF = IR = 30 mA, Irr = 0.1 × IR test conditions. Its flat leadframe design enhances thermal transfer from junction to PCB.
Rated for operation from –65°C to +150°C, it delivers 400 mA peak forward current and maintains <100 nA IR up to +150°C at VR = 200 V, supporting robust performance in thermally constrained automotive cabin and engine-control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 250 V - Withstands repetitive reverse transients up to this voltage without breakdown |
| trr | 50 ns - Enables use in >1 MHz switching power supplies and high-speed signal clamping |
| IR @ 200 V, 25°C | 100 nA - Ensures minimal leakage-induced error in precision bias and sensing paths |
| VF @ 100 mA | 1.0–1.25 V - Low forward drop reduces conduction loss in flyback snubbers and OR-ing circuits |
| RθJA | 330 °C/W - Thermal resistance measured on FR-4 PCB with recommended pad layout |
| PD | 375 mW - Maximum steady-state power dissipation at TA = 25°C |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronic components |
Pinout & Package
Package: SOD123F - Molded plastic case with flat leadframe, UL 94V-0 rating, moisture sensitivity level 1, matte tin-plated copper alloy terminals, cathode indicated by bar marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node in rectification or clamping path |
| Cathode (bar-marked) | Forward current exit / reverse-blocking terminal | Terminal where reverse voltage is applied; polarity-sensitive for ESD protection and flyback diode orientation |
Key Features
| Feature | Design Value |
|---|---|
| High reverse-breakdown voltage | 250 V VRRM provides 2× margin over common 12 V/24 V automotive rail transients |
| Flat leadframe thermal design | Reduces RθJA by ~25% vs. standard SOD-123, improving power handling in dense layouts |
| Totally lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900 ppm Br/Cl and <1000 ppm Sb |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, HTGB, and ESD per automotive reliability standards |
| SOD123F mechanical footprint | 0.018 g weight and 2.7 mm × 1.8 mm outline enable space-constrained portable designs |
Applications
| Automotive Cabin Control | USB Power Switching |
|---|---|
Use Scenario: Reverse-polarity protection and load-dump clamping in HVAC control modules and infotainment power rails. IC Role / Device Role: High-voltage clamp diode placed across 12 V input to absorb ISO 7637-2 pulse 5a transients. Use Value: 250 V VRRM withstands 150 V load-dump spikes; 50 ns trr prevents oscillation during fast edge clamping. | Use Scenario: OR-ing diode in dual-input USB-C PD power paths for portable medical monitors. IC Role / Device Role: Prevents backfeed between primary and backup 5 V sources while minimizing forward loss. Use Value: 1.0–1.25 V VF at 100 mA enables >97% efficiency; SOD123F allows placement adjacent to USB connector. |
| Smartphone Charger IC Protection | Industrial Sensor Signal Conditioning |
Use Scenario: Input transient suppression for buck controller ICs in compact wall adapters. IC Role / Device Role: Fast-recovery diode shunting ESD and surge events before they reach sensitive DC-DC IC inputs. Use Value: 100 nA IR ensures no DC offset in feedback networks; 5.0 pF CT avoids RF coupling into control loops. | Use Scenario: Overvoltage clamp on analog front-end inputs of 4–20 mA loop-powered sensors. IC Role / Device Role: Limits input voltage to ±25 V during field-wiring faults or lightning-induced surges. Use Value: Stable 250 V V(BR)R across –55°C to +150°C ensures consistent protection in outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV21W-7-F | Same VRRM (250 V), but trr = 50 ns (identical), IR = 100 nA (identical); SOD-123 (not SOD123F) package | Lacks AEC-Q101 qualification and flat leadframe thermal enhancement | Select when automotive qualification is not required and cost is prioritized over thermal margin |
| 1N4148W-7-F | Lower VRRM (100 V), faster trr (4 ns), higher IR (25 nA @ 20 V); same SOD-123F footprint | Not suitable for >100 V transient suppression; limited to signal-level clamping | Select only for low-voltage, ultra-high-speed logic clamping where 250 V margin is unnecessary |
Compared with BAV21W-7-F and 1N4148W-7-F, the BAV21HWFQ-7 uniquely combines AEC-Q101 qualification, 250 V capability, and enhanced thermal performance in SOD123F-making it the sole choice for automotive-grade high-voltage switching where reliability and thermal headroom are critical.
Availability
BAV21HWFQ-7 is available at Aetrix Electronics and suitable for automotive cabin control systems, USB power switching architectures, smartphone charger IC protection, and industrial sensor signal conditioning requiring stable component supply and full AEC-Q101 compliance.
Supply support for BAV21HWFQ-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.
The BAV21HWFQ-7 belongs to Diodes' AEC-Q101-qualified high-voltage switching diode product line, engineered specifically for automotive and industrial applications demanding robust transient immunity and long-term thermal stability.
FAQ
What is the maximum operating temperature for BAV21HWFQ-7?
The BAV21HWFQ-7 is rated for junction and storage temperatures from –65°C to +150°C. Its thermal resistance (RθJA = 330°C/W) and power derating curve confirm continuous operation at +150°C ambient when mounted on FR-4 with the recommended pad layout, provided power dissipation remains within the derated limit.
Is BAV21HWFQ-7 suitable for reverse polarity protection in 24 V automotive systems?
Yes. With 250 V VRRM and AEC-Q101 qualification, the BAV21HWFQ-7 safely handles ISO 7637-2 load-dump pulses up to 150 V in 24 V systems. Its 100 nA IR at 200 V ensures negligible leakage in always-on monitoring circuits, and its SOD123F package supports reliable solder joint integrity under thermal cycling.
How does the SOD123F package differ from standard SOD-123?
The SOD123F features a flat leadframe design that improves thermal transfer versus standard SOD-123, reducing RθJA by approximately 25%. It retains identical PCB footprint dimensions but uses annealed matte tin plating over copper alloy for superior solderability and intermetallic durability in automotive reflow profiles.
Does BAV21HWFQ-7 meet halogen-free and antimony-free "Green" requirements?
Yes. The BAV21HWFQ-7 is certified halogen- and antimony-free per Diodes Incorporated's definition: <900 ppm bromine, <900 ppm chlorine (<1500 ppm total Br + Cl), and <1000 ppm antimony compounds. It is fully RoHS 3 compliant (2015/863/EU) with no purposely added lead.
BAV21HWFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 250 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 200 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -65°C ~ 150°C
BAV21HWFQ-7 FAQ
1.How can I place an order for BAV21HWFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV21HWFQ-7 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 BAV21HWFQ-7 reliable?
The price and inventory of BAV21HWFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV21HWFQ-7 is usually 5 days.
3.What payment methods are accepted for BAV21HWFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV21HWFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV21HWFQ-7?
BAV21HWFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV21HWFQ-7 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 BAV21HWFQ-7?
For technical support, including BAV21HWFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV21HWFQ-7 requirements.
6.How does Aetrix verify that BAV21HWFQ-7 is sourced from the original manufacturer or authorized distributors?
All BAV21HWFQ-7 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 BAV21HWFQ-7 meets industry standards.
7.What is the process for return or replacement of BAV21HWFQ-7?
All BAV21HWFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAV21HWFQ-7, 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 BAV21HWFQ-7 part is unused and in its original packaging.
Return procedure for BAV21HWFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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