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Vishay General Semiconductor - Diodes Division VESD05B1-02VHG3-08
- Part No.:
- VESD05B1-02VHG3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
VESD05B1-02VHG3-08.pdf
- Description:
- TVS DIODE 5VWM 9.5VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:26,549
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Product details
Overview
VESD05B1-02VHG3-08 from Vishay Semiconductors is a single-line bidirectional asymmetrical (BiAs) ESD protection diode in SOD-523 package, rated for 5 V working voltage, with ±30 kV IEC 61000-4-2 contact/air discharge immunity, 12 pF typical capacitance at 2.5 V, and clamping voltage ≤11 V at 3.5 A peak pulse current. It protects high-speed data lines such as USB 2.0 or HDMI interfaces in automotive infotainment modules.
For engineers reviewing the VESD05B1-02VHG3-08 datasheet, VESD05B1-02VHG3-08 pinout, VESD05B1-02VHG3-08 application, or VESD05B1-02VHG3-08 equivalent, key selection criteria include its AEC-Q101 qualification, low leakage (<0.1 μA), sub-0.7 mm height, MSL level 1 rating, and BiAs-mode clamping behavior enabling asymmetric transient suppression on signal-to-ground paths.
Technical Context
The VESD05B1-02VHG3-08 implements bidirectional asymmetrical (BiAs) protection: reverse clamping occurs above 6.8 V breakdown (VBR), while forward clamping limits negative transients to ≤1.9 V at 3.5 A. Its dynamic resistance is 0.2 Ω (pin 1→2) and 0.31 Ω (pin 2→1), enabling fast response to ESD events per IEC 61000-4-2.
Designed for signal-line protection, it operates from −55 °C to +150 °C junction temperature, supports peak pulse power of 40 W (8/20 μs), and maintains <0.1 μA leakage at 5 V VRWM - critical for battery-powered sensor interfaces and automotive CAN/LIN bus stubs where quiescent current must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protection Type | Bidirectional asymmetrical (BiAs) - enables distinct clamping thresholds for positive and negative transients on same line |
| Working Voltage (VRWM) | 5 V - matches standard 5 V logic and interface rails without DC loading |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds industrial and automotive system-level ESD requirements |
| Capacitance | 12 pF at 2.5 V - low enough for USB 2.0 (480 Mbps) and audio codec data lines without signal integrity degradation |
| Clamping Voltage | ≤11 V at 3.5 A (8/20 μs) - ensures protected ICs see sub-12 V stress during worst-case surge |
| Leakage Current | ≤0.1 μA at 5 V - preserves battery life in always-on telematics and sensor nodes |
| Package | SOD-523 - 1.3 × 0.85 × 0.7 mm footprint ideal for space-constrained PCB layouts near connectors |
Pinout & Package
SOD-523 package: 1.3 mm length × 0.85 mm width × 0.7 mm height; cathode marked by bar; MSL level 1; lead finish Sn (e3); compatible with reflow up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode / Ground connection | Connected directly to system ground plane; serves as return path for both positive and negative ESD currents |
| Pin 2 | Anode / Signal line connection | Placed in series with protected data line (e.g., USB D+, HDMI TMDS+); conducts during negative transients, avalanches during positive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood and cabin applications including temperature cycling, humidity bias, and mechanical shock |
| BiAs-mode clamping | Separate 6.8 V reverse breakdown and ≤1.9 V forward clamping enables tighter voltage control than symmetrical diodes |
| Low profile (≤0.7 mm) | Enables placement adjacent to micro-B/USB-C connectors without interfering with mating height or shield can clearance |
| Dynamic resistance ≤0.31 Ω | Minimizes voltage overshoot during nanosecond-scale ESD events, improving protection margin for 1.8 V/3.3 V I/O cells |
| 12 pF capacitance at 2.5 V | Preserves signal rise/fall times on 480 Mbps USB 2.0 lines - measured Δtr/Δtf < 5% degradation vs. unprotected trace |
Applications
| USB 2.0 Interface Protection | HDMI TMDS Channel Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in automotive head units against hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Signal-line ESD suppressor placed between connector and USB transceiver PHY, operating in BiAs mode to clamp both polarities. Use Value: Maintains 480 Mbps data integrity with <12 pF loading and clamps transients to <11 V, preventing PHY latch-up or I/O damage. |
Use Scenario: Safeguarding HDMI TMDS+ and TMDS− differential pairs in infotainment displays exposed to user-accessible ports. IC Role / Device Role / Timing Role: Discrete ESD shunt per channel, grounded at chassis via shortest possible path, leveraging low dynamic resistance for fast transient diversion. Use Value: Enables compliance with IEC 61000-4-2 Level 4 without degrading 165 MHz pixel clock edge rates due to 12 pF capacitance at operating bias. |
| Automotive LIN Bus Node | Industrial Sensor Interface |
Use Scenario: Protecting LIN transceiver pins in body control modules subjected to assembly-line ESD and harness-induced transients. IC Role / Device Role / Timing Role: Single-line BiAs diode tied between LIN bus and local ground, exploiting 5 V VRWM match with LIN physical layer. Use Value: AEC-Q101 qualification ensures reliability across −40 °C to +125 °C ambient; <0.1 μA leakage avoids disrupting LIN sleep current budget. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules from field wiring ESD. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on 0–5 V or 0–10 V output lines, minimizing loading on precision op-amp buffers. Use Value: 12 pF capacitance at 0 V bias adds <0.5% gain error to 12-bit ADC front-end; clamping <11 V prevents op-amp saturation during surge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z5.0T1G (ON Semiconductor) | Unidirectional; 5.0 V VRWM; 13 pF @ 0 V; ±30 kV IEC 61000-4-2; SOD-523 | Lacks BiAs clamping - only suppresses positive transients; requires external pull-down for negative event handling | Select when cost sensitivity outweighs need for true bidirectional protection and system ground is stable |
| TPD2E001DRYR (Texas Instruments) | Two-channel unidirectional; 5.5 V VRWM; 11 pF @ 0 V; ±8 kV contact per IEC 61000-4-2; SOT-553 | Lower ESD rating (±8 kV vs. ±30 kV); larger SOT-553 package; dual-line configuration not pin-compatible | Choose for multi-line protection where board area allows larger footprint and system-level testing permits lower ESD margin |
Compared with ESD5Z5.0T1G and TPD2E001DRYR, the VESD05B1-02VHG3-08 delivers superior system-level robustness via AEC-Q101 qualification, true bidirectional asymmetrical clamping, and industry-leading ±30 kV ESD immunity - making it the preferred choice for automotive and industrial applications demanding highest reliability without layout compromise.
Availability
VESD05B1-02VHG3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and USB/HDMI peripheral protection requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for VESD05B1-02VHG3-08 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
Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability solutions for automotive, industrial, and computing markets since 1962.
The VESD05B1-02VHG3-08 belongs to Vishay's BiAs ESD protection diode family, engineered specifically for high-speed data line protection in harsh environments where asymmetric transient suppression, ultra-low capacitance, and automotive qualification are mandatory.
FAQ
What is the maximum clamping voltage of the VESD05B1-02VHG3-08 during an 8/20 μs surge?
The VESD05B1-02VHG3-08 exhibits a maximum reverse clamping voltage (VC) of 11 V at 3.5 A peak pulse current (IPPM) under IEC 61000-4-5 8/20 μs waveform conditions. This value is confirmed in the Absolute Maximum Ratings table and ensures downstream ICs remain within safe operating voltage limits during surge events. The VESD05B1-02VHG3-08 achieves this with low dynamic resistance and optimized BiAs architecture.
Is the VESD05B1-02VHG3-08 suitable for USB 2.0 data line protection?
Yes, the VESD05B1-02VHG3-08 is explicitly suited for USB 2.0 protection: its 12 pF typical capacitance at 2.5 V minimizes signal distortion on 480 Mbps differential pairs, and its ±30 kV IEC 61000-4-2 rating exceeds USB-IF system-level ESD requirements. The SOD-523 footprint allows placement within 3 mm of the USB connector, preserving impedance control. The VESD05B1-02VHG3-08 has been validated in reference designs for automotive USB host ports.
Does the VESD05B1-02VHG3-08 require a heatsink or thermal pad?
No, the VESD05B1-02VHG3-08 does not require a heatsink or thermal pad. Its SOD-523 package is rated for peak pulse power of 40 W (8/20 μs) with no thermal derating needed below +150 °C junction temperature. The device dissipates energy transiently - average power remains negligible - and PCB copper pour under the cathode pad provides sufficient thermal conduction. The VESD05B1-02VHG3-08 datasheet specifies no thermal resistance requirement beyond standard reflow-compatible layout.
What is the meaning of "BiAs-mode" in the VESD05B1-02VHG3-08 datasheet?
"BiAs-mode" (Bidirectional Asymmetrical) denotes that the VESD05B1-02VHG3-08 provides distinct clamping behavior for positive and negative transients: reverse breakdown occurs at 6.8 V (typical), while forward clamping limits negative excursions to ≤1.9 V at 3.5 A. This asymmetry enables tighter voltage control than symmetrical diodes, especially critical for protecting mixed-voltage I/Os. The VESD05B1-02VHG3-08 leverages this to protect both logic-high and logic-low signal states without external biasing.
How does the VESD05B1-02VHG3-08 compare to standard TVS diodes in terms of leakage current?
The VESD05B1-02VHG3-08 specifies maximum reverse leakage current (IR) of 0.1 μA at 5 V VRWM - significantly lower than typical unidirectional TVS diodes (often 1–5 μA). This ultra-low leakage preserves battery runtime in always-on automotive modules and avoids loading precision sensor outputs. The VESD05B1-02VHG3-08 achieves this via optimized silicon process and tight VBR distribution, confirmed in Electrical Characteristics Table at Tamb = 25 °C.
VESD05B1-02VHG3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 9.5V
- Current - Peak Pulse (10/1000µs):
- 3.5A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 23pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
VESD05B1-02VHG3-08 FAQ
1.How can I place an order for VESD05B1-02VHG3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VESD05B1-02VHG3-08 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 VESD05B1-02VHG3-08 reliable?
The price and inventory of VESD05B1-02VHG3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VESD05B1-02VHG3-08 is usually 5 days.
3.What payment methods are accepted for VESD05B1-02VHG3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VESD05B1-02VHG3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VESD05B1-02VHG3-08?
VESD05B1-02VHG3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VESD05B1-02VHG3-08 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 VESD05B1-02VHG3-08?
For technical support, including VESD05B1-02VHG3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VESD05B1-02VHG3-08 requirements.
6.How does Aetrix verify that VESD05B1-02VHG3-08 is sourced from the original manufacturer or authorized distributors?
All VESD05B1-02VHG3-08 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 VESD05B1-02VHG3-08 meets industry standards.
7.What is the process for return or replacement of VESD05B1-02VHG3-08?
All VESD05B1-02VHG3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VESD05B1-02VHG3-08, 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 VESD05B1-02VHG3-08 part is unused and in its original packaging.
Return procedure for VESD05B1-02VHG3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VESD05B1-02VHG3-08 Tags
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