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Vishay General Semiconductor - Diodes Division VESD05A1B-02Z-GS08
- Part No.:
- VESD05A1B-02Z-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- SOD-923
- Datasheet:
-
VESD05A1B-02Z-GS08.pdf
- Description:
- TVS DIODE 5VWM 11VC SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:2,370
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Product details
Overview
VESD05A1B-02Z-GS08 from Vishay Semiconductors is a bidirectional asymmetrical ESD-protection diode in SOD-923 package, rated for 5 V reverse standoff voltage, 12 pF typical capacitance at 2.5 V, <0.1 μA leakage at 5 V, and ±30 kV air discharge immunity per IEC 61000-4-2 - deployed on high-speed data lines including USB 2.0 and HDMI interfaces.
For engineers reviewing the VESD05A1B-02Z-GS08 datasheet, VESD05A1B-02Z-GS08 pinout, VESD05A1B-02Z-GS08 application, or VESD05A1B-02Z-GS08 equivalent, key selection criteria include clamping voltage (8.9 V at 3 A), low-profile 0.4 mm height, MSL level 1 solderability, and BiAs protection behavior critical for signal integrity in compact portable electronics.
Technical Context
The VESD05A1B-02Z-GS08 operates in bidirectional asymmetrical (BiAs) bias mode: pin 1 grounded, pin 2 connected to protected signal line. It provides distinct clamping paths - reverse breakdown at 6–7.5 V with 8–11 V clamping at 3 A, and forward conduction with VF ≤1.9 V at 3 A - enabling low-voltage transient suppression near ground.
Its SOD-923 footprint (0.9 × 0.65 mm, 0.4 mm max height) supports high-density PCB layouts. Capacitance varies from 12 pF at VR = 2.5 V to 19–23 pF at VR = 0 V, making it suitable for ≤480 Mbps data channels where insertion loss and signal distortion must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 5 V - maximum continuous operating voltage before conduction begins; sets upper limit for safe signal swing in protected line. |
| Clamping Voltage (VC) | 8.9 V max at 3 A peak pulse - limits transient voltage seen by downstream IC, protecting 5 V logic interfaces. |
| Capacitance (CD) | 12 pF typ. at VR = 2.5 V, 1 MHz - ensures minimal signal loading on USB 2.0 or audio/data lines. |
| Leakage Current (IR) | <0.1 μA at VR = 5 V - avoids DC loading or battery drain in always-on portable circuits. |
| ESD Immunity | ±30 kV air / ±20 kV contact discharge per IEC 61000-4-2 - exceeds Level 4 system-level ESD requirements. |
| Package | SOD-923 - 0.4 mm height, 0.9 × 0.65 mm footprint; enables routing under fine-pitch BGAs and space-constrained mobile modules. |
Pinout & Package
SOD-923 is a 2-terminal surface-mount package with cathode bar marking on pin 1. Total weight is 0.45 mg; molded compound meets UL 94 V-0; MSL level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to system ground; serves as return path for both positive and negative ESD transients. |
| Pin 2 | Anode | Connected to protected signal/data line; conducts forward during negative transients and reverse during positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Asymmetrical (BiAs) Clamping | Enables low-voltage clamping of negative transients (~1.9 V at 3 A) while maintaining higher reverse clamping (8.9 V), optimizing protection for ground-referenced signals. |
| Ultra-Low Profile | 0.4 mm max height allows placement beneath tight-clearance components like camera modules or stacked memory in smartphones. |
| Low Capacitance Variation | 12 pF at 2.5 V bias ensures stable impedance matching across typical data-line DC bias ranges, reducing bit error rate in high-speed links. |
| MSL Level 1 Rating | Permits unlimited floor life and standard reflow without baking, simplifying SMT assembly for high-volume consumer electronics manufacturing. |
Applications
| USB 2.0 Interface Protection | HDMI DDC/CEC Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during cable insertion/removal in tablets and peripherals. IC Role / Device Role / Timing Role: Signal-line transient suppressor placed directly at connector, operating in BiAs mode to clamp both polarity surges without DC blocking. Use Value: Maintains 480 Mbps data integrity with only 12 pF loading and clamps transients below 9 V, preventing PHY latch-up or damage. | Use Scenario: Safeguarding HDMI DDC (I²C) and CEC control lines exposed on external ports in TVs and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance ESD shunt between data line and ground, preserving I²C timing margins (100 kHz/400 kHz) during hot-plug events. Use Value: Sub-0.1 μA leakage avoids pull-up current errors; 5 V VRWM aligns with 3.3–5 V I²C bus voltage range. |
| Smartphone Antenna Switch Control Lines | Automotive Infotainment Display Flex Cables |
Use Scenario: Protecting GPIO-controlled RF antenna switch enable lines subject to handling ESD in handheld assembly and field use. IC Role / Device Role / Timing Role: Transient voltage suppressor on low-current digital control path, leveraging BiAs behavior to avoid forward-bias disruption of logic levels. Use Value: 1.9 V forward clamping prevents false toggling of CMOS inputs; 0.4 mm height fits within narrow flex-circuit routing zones. | Use Scenario: Shielding LVDS or RGB signal pairs in display flex cables connecting head units to dash displays against assembly and service ESD. IC Role / Device Role / Timing Role: Per-line ESD clamp on each differential pair, minimizing skew impact via matched 12 pF capacitance and symmetric layout. Use Value: 19–23 pF max capacitance at 0 V ensures <0.5% signal rise-time degradation on 100 MHz pixel clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD-protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9X5.0ST5G | Single-line, SOD-923, 5 V VRWM, 13 pF typ., 9.5 V VC at 3 A, RoHS-compliant. | Higher clamping voltage (9.5 V vs. 8.9 V); identical footprint and leakage. | Preferred when margin for 5 V rail overshoot is >0.5 V; otherwise VESD05A1B-02Z-GS08 offers tighter clamping. |
| TPD2E001DRYR | Dual-line, X2SON-0.64×0.64 mm, 5 V VRWM, 11 pF typ., 12 V VC at 3 A, integrated 100 Ω series resistor. | Includes series resistance for ringing suppression but doubles capacitance load per line; not pin-compatible. | Select when board space permits dual-line integration and ringing mitigation is prioritized over absolute lowest capacitance. |
Compared with ESD9X5.0ST5G and TPD2E001DRYR, the VESD05A1B-02Z-GS08 delivers the lowest clamping voltage (8.9 V) in its SOD-923 class and maintains the strictest capacitance stability across bias, making it optimal for noise-sensitive, high-speed single-line protection where voltage margin is constrained.
Availability
VESD05A1B-02Z-GS08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control-line safeguarding, and smartphone antenna switch control requiring stable component supply across consumer, industrial, and automotive infotainment programs.
Supply support for VESD05A1B-02Z-GS08 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 Semiconductors is a global leader in discrete semiconductors, specializing in power MOSFETs, diodes, optoelectronics, and protection devices with emphasis on reliability and precision.
The VESD05A1B-02Z-GS08 belongs to Vishay's BiAs ESD protection family, engineered specifically for high-speed data-line protection in space-constrained portable and automotive electronics where low capacitance and asymmetrical clamping are essential.
FAQ
What is the clamping voltage of the VESD05A1B-02Z-GS08 at 3 A peak pulse current?
The VESD05A1B-02Z-GS08 has a maximum clamping voltage of 11 V at 3 A peak pulse current in reverse direction, with a typical value of 8.9 V under the same IEC 61000-4-5 8/20 µs waveform. This performance ensures downstream 5 V logic interfaces remain within safe operating voltage limits during surge events. The VESD05A1B-02Z-GS08 datasheet specifies this parameter in the Electrical Characteristics table under "Reverse Clamping voltage".
Does the VESD05A1B-02Z-GS08 support bidirectional ESD protection?
Yes, the VESD05A1B-02Z-GS08 provides bidirectional asymmetrical (BiAs) protection: it clamps positive transients in reverse breakdown (6–7.5 V VBR) and negative transients in forward conduction (VF ≤1.9 V at 3 A). This behavior is inherent to its internal structure and confirmed in the Bias-Mode description of the VESD05A1B-02Z-GS08 datasheet.
What is the typical capacitance of the VESD05A1B-02Z-GS08 at 2.5 V reverse bias?
The VESD05A1B-02Z-GS08 exhibits a typical capacitance of 12 pF at 2.5 V reverse bias and 1 MHz frequency, as specified in the Electrical Characteristics table. This low, bias-stable value minimizes signal distortion on high-speed lines such as USB 2.0 and HDMI DDC, and is a key differentiator versus alternatives with higher or more voltage-sensitive capacitance.
Is the VESD05A1B-02Z-GS08 compliant with RoHS and halogen-free standards?
Yes, the VESD05A1B-02Z-GS08 is compliant with the RoHS Directive 2002/95/EC and conforms to WEEE 2002/96/EC. Its molding compound meets UL 94 V-0 flammability rating, and full material compliance details are documented in Vishay's Material Category Policy (document #99902), referenced in the VESD05A1B-02Z-GS08 datasheet.
What is the maximum operating temperature range for the VESD05A1B-02Z-GS08?
The VESD05A1B-02Z-GS08 supports a junction operating temperature range of −40 °C to +125 °C, as stated in the Absolute Maximum Ratings table. This range enables reliable deployment in automotive cabin environments, industrial edge controllers, and thermally demanding portable electronics where ambient temperatures exceed 85 °C.
VESD05A1B-02Z-GS08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- SOD-923
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 33W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 19pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
VESD05A1B-02Z-GS08 FAQ
1.How can I place an order for VESD05A1B-02Z-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VESD05A1B-02Z-GS08 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 VESD05A1B-02Z-GS08 reliable?
The price and inventory of VESD05A1B-02Z-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VESD05A1B-02Z-GS08 is usually 5 days.
3.What payment methods are accepted for VESD05A1B-02Z-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VESD05A1B-02Z-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VESD05A1B-02Z-GS08?
VESD05A1B-02Z-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VESD05A1B-02Z-GS08 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 VESD05A1B-02Z-GS08?
For technical support, including VESD05A1B-02Z-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VESD05A1B-02Z-GS08 requirements.
6.How does Aetrix verify that VESD05A1B-02Z-GS08 is sourced from the original manufacturer or authorized distributors?
All VESD05A1B-02Z-GS08 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 VESD05A1B-02Z-GS08 meets industry standards.
7.What is the process for return or replacement of VESD05A1B-02Z-GS08?
All VESD05A1B-02Z-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with VESD05A1B-02Z-GS08, 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 VESD05A1B-02Z-GS08 part is unused and in its original packaging.
Return procedure for VESD05A1B-02Z-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VESD05A1B-02Z-GS08 Tags
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