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Diodes Incorporated BAV21HWF-7
- Part No.:
- BAV21HWF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
BAV21HWF-7.pdf
- Description:
- DIODE GP 200V 200MA SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,002
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Product details
Overview
BAV21HWF-7 from Diodes Incorporated is a surface-mount high-voltage switching diode in SOD123F package, rated for 250 V peak repetitive reverse voltage, 50 ns reverse recovery time, and 400 mA peak forward current. It serves as a fast-recovery rectifier in power supply front-ends and signal clamping circuits of automotive and portable electronics.
For engineers reviewing the BAV21HWF-7 datasheet, BAV21HWF-7 pinout, BAV21HWF-7 application, or BAV21HWF-7 equivalent, key selection criteria include reverse breakdown stability at 150°C, low 100 nA leakage at 200 V, thermal resistance of 70°C/W to solder point, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This diode employs a planar epitaxial silicon structure optimized for high-voltage blocking with minimal minority-carrier storage, enabling 50 ns trr under 30 mA IF/IR conditions and 0.1×IR tail current. Its flat leadframe design enhances thermal transfer from junction to PCB, supporting continuous operation up to +150°C ambient.
The SOD123F package features matte tin-plated copper alloy leads, UL 94V-0 molding compound, and cathode-bar polarity marking. Thermal resistance junction-to-solder point (RθJSP = 70°C/W) is specified with recommended FR-4 pad layout per AP02001.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 250 V - Withstands transient surges up to this DC-blocking voltage without avalanche conduction |
| trr | 50 ns - Enables efficient high-frequency switching in SMPS and snubber circuits |
| IR @ 200 V, 25°C | 100 nA - Ensures minimal leakage in high-impedance bias networks |
| VF @ 100 mA | 1.0 V max - Limits forward conduction loss in low-duty-cycle clamp applications |
| RθJSP | 70 °C/W - Delivers predictable thermal performance when soldered to standard PCB copper area |
| IFRM | 625 mA - Supports short-duration surge handling in input protection stages |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic modules |
Pinout & Package
SOD123F surface-mount package with molded green plastic case (UL 94V-0), flat leadframe, and cathode identification via molded bar on top surface. Weight: 0.018 g. Moisture sensitivity level: J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential node in rectification or clamping path |
| Cathode (bar-marked) | Forward current exit / reverse blocking terminal | Must be routed to higher-potential node; polarity critical for ESD-safe layout |
Key Features
| Feature | Design Value |
|---|---|
| High reverse breakdown voltage | 250 V VRRM enables use in 24 V–48 V industrial and 12 V automotive systems with margin against load-dump transients |
| Flat leadframe thermal design | Reduces RθJSP to 70°C/W-improves power handling over standard SOD-123 by ~25% |
| Low 100 nA IR at 200 V | Maintains signal integrity in high-impedance sensor biasing and precision reference paths |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, and ESD per automotive reliability standards |
| Halogen- and antimony-free "Green" construction | Meets <900 ppm Br/Cl and <1000 ppm Sb limits-compliant with IPC-1752A material declarations |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Reverse polarity and load-dump protection in 12 V BCM power rails. IC Role / Device Role / Timing Role: High-voltage clamp diode placed across input filter capacitor. Use Value: 250 V VRRM withstands ISO 7637-2 Pulse 5a (±100 V surge); 50 ns trr prevents latch-up during fast transients. | Use Scenario: Overvoltage clamping on CC1/CC2 lines in USB-C receptacles. IC Role / Device Role / Timing Role: Signal-line transient suppressor with minimal capacitance. Use Value: 5.0 pF CT at 0 V ensures <0.1% signal distortion at 100 MHz; 100 nA IR avoids pull-up current errors. |
| Portable Medical Sensor Bias | Industrial PLC Input Protection |
Use Scenario: Precision bias network protection for analog front-end amplifiers in handheld diagnostics. IC Role / Device Role / Timing Role: Low-leakage blocking diode in high-Z voltage divider. Use Value: 100 nA IR at 200 V prevents >1 mV offset error in 10 MΩ networks; AEC-Q101 ensures field longevity. | Use Scenario: Input stage protection for 24 V digital I/O modules exposed to inductive kickback. IC Role / Device Role / Timing Role: Fast-recovery flyback path for relay coils and solenoids. Use Value: 50 ns trr limits energy dissipation during 10 kHz switching; 625 mA IFRM handles 10 ms surges without degradation. |
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 die, SOD-123 (not SOD123F); RθJSP = 100°C/W; no AEC-Q101 qualification | Limited to commercial-temp consumer products; unsuitable for under-hood automotive | Select only if cost-sensitive non-automotive designs accept higher thermal resistance |
| 1N4148W-7-F | 100 V VRRM; 4 ns trr; 300 mA IFRM; not AEC-Q101 qualified | Optimized for signal-speed logic clamping-not high-voltage transient suppression | Use only where reverse voltage ≤75 V and sub-10 ns switching is required |
Compared with BAV21W-7-F and 1N4148W-7-F, the BAV21HWF-7 uniquely combines 250 V blocking, 50 ns recovery, and AEC-Q101 qualification-making it the sole choice for thermally constrained, high-reliability automotive clamping where both voltage margin and qualification matter.
Availability
BAV21HWF-7 is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery interfaces, portable medical sensors, and industrial PLC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAV21HWF-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The BAV21HWF-7 belongs to Diodes' high-voltage switching diode product line, engineered specifically for automotive and industrial applications demanding robust transient immunity, low leakage, and AEC-Q101 reliability certification.
FAQ
What is the maximum operating temperature for BAV21HWF-7?
The BAV21HWF-7 has an operating junction temperature range of –65°C to +150°C, with derated power dissipation above +25°C ambient per Figure 1. At +100°C ambient, maximum continuous power drops to ~180 mW due to RθJA = 330°C/W on FR-4 board.
Is BAV21HWF-7 suitable for high-frequency rectification above 1 MHz?
Yes-its 50 ns reverse recovery time and 5.0 pF junction capacitance enable reliable operation up to 2 MHz in flyback and boost converter outputs. Performance remains stable up to +125°C, though VF increases ~1.5 mV/°C above 25°C.
Does BAV21HWF-7 require special PCB layout considerations?
Yes-use the recommended pad layout from AP02001 to achieve RθJSP = 70°C/W. Avoid thermal relief on cathode/anode pads; maintain ≥0.3 mm clearance to adjacent copper; and orient the cathode bar toward heat-sinking planes for optimal thermal transfer.
How does the SOD123F package differ from standard SOD-123?
SOD123F uses a flat leadframe (vs. bent leads in SOD-123), reducing profile height to 0.9 mm max and improving thermal resistance to solder point (70°C/W vs. 100°C/W). It also features tighter dimensional tolerances and enhanced moisture resistance (J-STD-020 Level 1).
BAV21HWF-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):
- 200 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
BAV21HWF-7 FAQ
1.How can I place an order for BAV21HWF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV21HWF-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 BAV21HWF-7 reliable?
The price and inventory of BAV21HWF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV21HWF-7 is usually 5 days.
3.What payment methods are accepted for BAV21HWF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV21HWF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV21HWF-7?
BAV21HWF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV21HWF-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 BAV21HWF-7?
For technical support, including BAV21HWF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV21HWF-7 requirements.
6.How does Aetrix verify that BAV21HWF-7 is sourced from the original manufacturer or authorized distributors?
All BAV21HWF-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 BAV21HWF-7 meets industry standards.
7.What is the process for return or replacement of BAV21HWF-7?
All BAV21HWF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAV21HWF-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 BAV21HWF-7 part is unused and in its original packaging.
Return procedure for BAV21HWF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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