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Diodes Incorporated BAV19WS-7
- Part No.:
- BAV19WS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BAV19WS-7.pdf
- Description:
- DIODE GEN PURP 100V 200MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,592
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Product details
Overview
BAV19WS-7 from Diodes Incorporated is a surface-mount high-voltage fast-switching diode in SOD323 package, rated for 120 V repetitive peak reverse voltage (VRRM), 1.25 V forward voltage at 200 mA, and 50 ns reverse recovery time (tRR). It serves as a general-purpose switching diode in DC-DC converter flyback snubbers, signal clamping, and low-power rectification circuits.
For engineers reviewing the BAV19WS-7 datasheet, BAV19WS-7 pinout, BAV19WS-7 application, or BAV19WS-7 equivalent, key selection criteria include its 120 V VRRM, 200 mW power dissipation, 50 ns tRR, SOD323 footprint compatibility, and automotive-grade qualification path via Q-suffix variants.
Technical Context
This diode employs a planar epitaxial silicon structure optimized for fast recovery and high reverse breakdown integrity. Its 50 ns tRR enables efficient operation in 100–500 kHz switching topologies, while the 120 V VRRM supports use in 48 V and 100 V rail protection and clamp networks.
The device exhibits low junction-to-ambient thermal resistance (625 °C/W) on FR-4 with 1-inch² copper pad, enabling stable 200 mA continuous forward current (IF) at +25°C ambient. Total capacitance remains ≤5.0 pF at 0 V bias, supporting high-frequency signal routing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - Withstands repetitive reverse transients up to 120 V without breakdown in clamp or snubber circuits. |
| tRR | 50 ns - Enables clean commutation in sub-1 µs switching intervals, minimizing switching loss in flyback and boost converters. |
| VF @ 200 mA | 1.25 V - Low forward drop reduces conduction loss in low-current rectification paths (e.g., auxiliary bias supplies). |
| IF (continuous) | 250 mA - Supports sustained current handling in signal-level switching and low-power DC-DC feedback paths. |
| CT @ 0 V | 5.0 pF - Minimal junction capacitance preserves signal edge fidelity in RF detector and high-speed logic interface applications. |
| RθJA | 625 °C/W - Thermal performance defined on standard FR-4 PCB; derating required above +25°C ambient per Fig. 1. |
Pinout & Package
Package: SOD323 - 2-pin surface-mount plastic package (1.30 × 1.70 × 0.95 mm), cathode marked by band on top surface; terminals are matte tin over Alloy 42 leadframe, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node in forward-biased configuration; unmarked end of SOD323 body. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to higher-potential node during reverse bias; critical for polarity-sensitive clamp placement. |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 50 ns tRR enables reliable operation in 200–500 kHz power stages without excessive ringing or shoot-through risk. |
| High reverse breakdown voltage | 120 V VRRM provides margin for 48 V system transients and allows use in 100 V bus monitoring clamps. |
| SOD323 surface-mount package | 0.004 g weight and JEDEC-compliant footprint support high-density automated assembly and reflow compatibility. |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900 ppm Br/Cl and <1000 ppm Sb; qualified to IATF 16949 manufacturing standards. |
Applications
| DC-DC Converter Snubber | Signal-Level Clamping |
|---|---|
Use Scenario: Suppresses voltage spikes across MOSFET drains in 48 V input flyback converters operating at 250 kHz. IC Role / Device Role: Fast-recovery clamp diode in RCD snubber network. Use Value: 50 ns tRR and 120 V VRRM ensure rapid energy dissipation without reverse recovery overshoot. |
Use Scenario: Limits analog sensor output swing to microcontroller ADC input range (0–3.3 V). IC Role / Device Role: Bidirectional ESD/overvoltage clamp at signal line interface. Use Value: Low 5.0 pF CT avoids signal attenuation; 1.25 V VF sets precise clamping threshold. |
| Low-Power Rectification | Logic-Level Voltage Translation |
Use Scenario: Rectifies 12 V AC auxiliary winding output in isolated gate driver power supply. IC Role / Device Role: Output rectifier in low-current (<200 mA), high-efficiency linear post-regulator stage. Use Value: 200 mW PD and 250 mA IF rating match typical bias supply loads without heatsinking. |
Use Scenario: Isolates 5 V logic domain from 3.3 V MCU GPIO while preserving signal directionality. IC Role / Device Role: Unidirectional level-shifting diode in open-drain pull-up configuration. Use Value: 1.25 V VF ensures predictable voltage offset; SOD323 size fits tight board spacing near BGA packages. |
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 |
|---|---|---|---|
| BAV20WS-7-F | 200 V VRRM, same tRR (50 ns), identical SOD323 package and pinout | Supports higher bus voltages (e.g., 100 V industrial systems); otherwise functionally interchangeable | Select when design requires >120 V reverse standoff with no layout change. |
| 1N4148WS-7-F | 100 V VRRM, 4 ns tRR, same SOD323 package but faster recovery and lower voltage rating | Better suited for >1 MHz digital signal steering; insufficient for 120 V transient suppression | Choose only for high-frequency signal routing where VRRM margin is not required. |
Compared with BAV20WS-7-F and 1N4148WS-7-F, the BAV19WS-7 offers optimal balance of 120 V robustness and 50 ns speed for mid-voltage power conversion, whereas BAV20WS-7-F extends voltage headroom and 1N4148WS-7-F trades voltage for ultrafast response in signal domains.
Availability
BAV19WS-7 is available at Aetrix Electronics and suitable for DC-DC converter snubbers, signal-level clamping, and low-power rectification requiring stable component supply and JEDEC-qualified reliability.
Supply support for BAV19WS-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-7 belongs to Diodes' high-voltage fast-switching diode product line, engineered for robust transient suppression and efficient energy transfer in power supply and interface protection circuits.
FAQ
Is BAV19WS-7 suitable for automotive applications?
BAV19WS-7 itself is not AEC-Q200 qualified, but Diodes offers automotive-grade equivalents with Q-suffix (e.g., BAV19WSQ-7-F) manufactured in IATF 16949-certified facilities and PPAP-capable. These variants meet AEC-Q200 stress testing requirements for passive components and are intended for automotive use cases requiring controlled change management.
What is the maximum allowable junction temperature for continuous operation?
The BAV19WS-7 has an operating junction temperature range of –55°C to +150°C. At +25°C ambient, it can dissipate 200 mW continuously; derating follows the curve in Figure 1-power must be reduced linearly to zero at +150°C ambient, yielding ~125 mW max at +100°C ambient on standard FR-4 with 1-inch² copper pad.
Does BAV19WS-7 have a specified leakage current at elevated temperature?
Yes: peak reverse current (IR) is specified as ≤100 nA at 25°C and ≤15 µA at +100°C under rated DC blocking voltage (100 V). This temperature-dependent leakage is critical for low-power standby circuits where quiescent current must remain below 1 µA.
Can BAV19WS-7 replace 1N4148 in existing designs?
Only if reverse voltage requirements are ≤100 V. BAV19WS-7 has higher VRRM (120 V vs. 100 V) and slower tRR (50 ns vs. 4 ns), making it unsuitable for >1 MHz digital signal routing. However, it is a direct replacement in 48–100 V snubber and clamp applications where faster recovery is unnecessary and higher voltage margin is beneficial.
BAV19WS-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):
- 100 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 @ 100 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
BAV19WS-7 FAQ
1.How can I place an order for BAV19WS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV19WS-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 BAV19WS-7 reliable?
The price and inventory of BAV19WS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV19WS-7 is usually 5 days.
3.What payment methods are accepted for BAV19WS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV19WS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV19WS-7?
BAV19WS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV19WS-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 BAV19WS-7?
For technical support, including BAV19WS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV19WS-7 requirements.
6.How does Aetrix verify that BAV19WS-7 is sourced from the original manufacturer or authorized distributors?
All BAV19WS-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 BAV19WS-7 meets industry standards.
7.What is the process for return or replacement of BAV19WS-7?
All BAV19WS-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAV19WS-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 BAV19WS-7 part is unused and in its original packaging.
Return procedure for BAV19WS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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