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Diodes Incorporated BAV20WS-7
- Part No.:
- BAV20WS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAV20WS-7.pdf
- Description:
- DIODE GEN PURP 150V 200MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,266
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Product details
Overview
BAV20WS-7 from Diodes Incorporated is a surface-mount high-voltage fast-switching diode in SOD323 package, rated for 200 V repetitive peak reverse voltage (VRRM), 150 V DC blocking voltage (VRWM), and 50 ns reverse recovery time (tRR). It delivers 250 mA forward continuous current and operates across –55 °C to +150 °C, commonly used in flyback snubbers and ESD protection circuits in power supply front-ends.
For engineers reviewing the BAV20WS-7 datasheet, BAV20WS-7 pinout, BAV20WS-7 application, or BAV20WS-7 equivalent, key selection criteria include its 200 V VRRM, 50 ns tRR, 1.25 V VF @ 200 mA, 5.0 pF capacitance at 0 V, and SOD323 thermal resistance of 625 °C/W - all critical for high-speed switching and compact layout designs.
Technical Context
This diode employs a planar epitaxial silicon structure optimized for fast recovery with low stored charge, enabling efficient operation in high-frequency DC-DC converters and clamping circuits. Its 200 V VRRM and 150 V VRWM support use in 100–120 VAC line-derived supplies and automotive 24 V systems with transient margin.
The SOD323 package provides low parasitic inductance and capacitance (5.0 pF at 0 V), while the 50 ns tRR ensures minimal switching loss during turn-off in PWM-controlled topologies. Thermal resistance of 625 °C/W (on FR-4, 2 oz copper, 1-inch² pad) defines its derating behavior under sustained 200 mW dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports 100–120 VAC input rectification with safety margin |
| tRR | 50 ns - enables stable operation up to ~2 MHz switching in snubber/clamp circuits |
| VF @ 200 mA | 1.25 V - limits conduction loss to ≤250 mW in 200 mA paths |
| CT @ 0 V | 5.0 pF - minimizes capacitive loading on high-impedance signal nodes |
| PD | 200 mW - sets maximum steady-state power in ambient-limited PCB layouts |
| RθJA | 625 °C/W - requires ≥1-inch² copper pad for full-rated power at +25 °C ambient |
| IFSM @ 100 µs | 3.0 A - withstands typical MOSFET gate-drive surge transients |
Pinout & Package
Package: SOD323 - ultra-compact 2-pin surface-mount plastic case (1.30 mm × 1.70 mm × 0.90 mm), matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential node in clamp/snubber path; polarity-marked by absence of band |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by cathode band; ties to higher-potential rail or switch node in flyback/boost configurations |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 50 ns tRR enables clean turn-off in 1–2 MHz SMPS auxiliary windings |
| High reverse breakdown voltage | 200 V VRRM accommodates 120 VAC line surges plus 20% margin |
| Surface-mount compatibility | SOD323 footprint allows automated placement and reflow without lead bending |
| Low junction-to-ambient thermal resistance | 625 °C/W on standard FR-4 enables 200 mW dissipation with minimal board area |
| Halogen- and antimony-free "Green" construction | Meets IEC 61249-2-21:2017; <900 ppm Br, <900 ppm Cl, <1000 ppm Sb |
Applications
| Switch-Mode Power Supply Snubber | ESD Protection for Low-Voltage I/O |
|---|---|
Use Scenario: Placed across primary-side MOSFET drain-source in flyback converters to absorb leakage inductance energy. IC Role / Device Role / Timing Role: Fast-recovery clamping diode limiting voltage overshoot during MOSFET turn-off. Use Value: 50 ns tRR and 200 V rating suppress spikes below 250 V, protecting 300 V-rated MOSFETs. | Use Scenario: Connected between USB data lines and ground in portable chargers to shunt ESD pulses. IC Role / Device Role / Timing Role: Low-capacitance (5.0 pF) transient voltage suppressor with fast response. Use Value: Sub-100 nA IR at +100 °C maintains signal integrity; 200 V standoff prevents false triggering. |
| Automotive Load Dump Clamp | Industrial Sensor Signal Conditioning |
Use Scenario: Mounted across 24 V supply rails in telematics modules to clamp ISO 7637-2 pulse 5a transients. IC Role / Device Role / Timing Role: High-voltage transient absorber with robust thermal design. Use Value: 150 °C max operating temperature and 200 mW PD sustain repeated 100 ms load-dump events. | Use Scenario: Used in 4–20 mA loop transmitter front-end to protect ADC inputs from field wiring faults. IC Role / Device Role / Timing Role: Reverse-polarity and overvoltage protection diode. Use Value: 1.25 V VF at 200 mA ensures minimal offset error; SOD323 size fits dense analog PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage fast-switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV21WS-7-F | 250 V VRRM, 200 V VRWM, same tRR and package | Better suited for 230 VAC-derived supplies or higher-transient industrial environments | Select when >200 V standoff is required; otherwise identical layout and thermal behavior |
| 1N4148WS-7-F | 100 V VRRM, 4 ns tRR, same SOD323 package | Optimized for low-voltage, ultra-high-speed logic clamping-not for 120/240 VAC systems | Choose only for sub-75 V circuits where speed outweighs voltage rating |
Compared with BAV21WS-7-F, BAV20WS-7 offers balanced voltage margin for 120 VAC systems; versus 1N4148WS-7-F, it trades 46 ns slower recovery for 100 V higher blocking capability - critical for mains-connected power stages.
Availability
BAV20WS-7 is available at Aetrix Electronics and suitable for switch-mode power supply snubbers, automotive load-dump clamps, ESD protection circuits, and industrial sensor interfaces requiring stable component supply and JEDEC-qualified reliability.
Supply support for BAV20WS-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, manufacturing, and sales operations across Asia, Europe, and North America.
The BAV19WS–BAV21WS series belongs to Diodes' general-purpose high-voltage switching diode product line, engineered for cost-sensitive, space-constrained applications demanding fast recovery and robust thermal performance in consumer, industrial, and automotive power systems.
FAQ
Is BAV20WS-7 suitable for automotive applications?
No - BAV20WS-7 is not AEC-Q101 qualified. Diodes offers the automotive-grade BAV20WSQ-7-F variant with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. Standard BAV20WS-7 meets JEDEC reliability standards but lacks automotive change control and qualification testing.
What is the maximum forward current for continuous operation?
The maximum forward continuous current (IFM) is 250 mA at TA = +25 °C with device mounted on FR-4 PCB using a 1-inch² copper pad. Derating begins above +25 °C per the 625 °C/W RθJA; at +85 °C ambient, usable IFM drops to approximately 160 mA to maintain junction temperature ≤150 °C.
Does BAV20WS-7 have a specified reverse recovery charge (Qrr)?
No - the datasheet does not specify Qrr. Only tRR = 50 ns is provided under defined test conditions (IF = IR = 30 mA, IRR = 0.1 × IR, RL = 100 Ω). Designers requiring Qrr should consult Diodes' application note AN-2001 or characterize the device in-circuit using standard double-pulse methods.
Can BAV20WS-7 replace 1N4148 in high-voltage circuits?
No - 1N4148 has only 100 V VRRM, making it unsafe for circuits exceeding 70 V reverse bias. BAV20WS-7's 200 V rating allows direct substitution only where voltage stress exceeds 100 V; however, its 50 ns tRR is slower than 1N4148's typical 4 ns, so timing-critical logic clamps may require validation.
BAV20WS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 150 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 @ 150 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -65°C ~ 150°C
BAV20WS-7 FAQ
1.How can I place an order for BAV20WS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV20WS-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 BAV20WS-7 reliable?
The price and inventory of BAV20WS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV20WS-7 is usually 5 days.
3.What payment methods are accepted for BAV20WS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV20WS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV20WS-7?
BAV20WS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV20WS-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 BAV20WS-7?
For technical support, including BAV20WS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV20WS-7 requirements.
6.How does Aetrix verify that BAV20WS-7 is sourced from the original manufacturer or authorized distributors?
All BAV20WS-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 BAV20WS-7 meets industry standards.
7.What is the process for return or replacement of BAV20WS-7?
All BAV20WS-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAV20WS-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 BAV20WS-7 part is unused and in its original packaging.
Return procedure for BAV20WS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAV20WS-7 Tags
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BAV21W-7-F
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