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Vishay General Semiconductor - Diodes Division GCDA15C-1-GS08
- Part No.:
- GCDA15C-1-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
GCDA15C-1-GS08.pdf
- Description:
- TVS DIODE 15VWM 30VC SOT143
- Quantity:
- Payment:
- Shipping:
Inventory:5,158
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Product details
Overview
GCDA15C-1-GS08 from Vishay Semiconductors is a low-capacitance bidirectional ESD protection diode in SOT143 package, rated for ±15 V working voltage, <2 pF capacitance at 1 MHz, ±30 kV IEC 61000-4-2 ESD immunity, and 10 A peak pulse current. It serves as a single-line symmetrical clamping device for high-speed data lines including USB 2.0 and HDMI interfaces.
For engineers reviewing the GCDA15C-1-GS08 datasheet, GCDA15C-1-GS08 pinout, GCDA15C-1-GS08 application, or GCDA15C-1-GS08 equivalent, key selection criteria include bidirectional clamping symmetry, sub-2 pF capacitance at 0 V bias, reverse breakdown voltage of 16–17 V, ESD clamping voltage ≤130 V at ±8 kV contact discharge, and SOT143 thermal and layout constraints.
Technical Context
The GCDA15C-1-GS08 implements BiSy-mode (Bidirectional Symmetrical) protection using two avalanche diodes each in series with a PN diode, enabling identical clamping behavior for both polarities between pins 2+3 and pins 1+4. Its symmetrical architecture ensures matched forward and reverse conduction thresholds without polarity dependence.
Clamping performance is optimized for minimal inductance: signal path must route through pins 2 and 3 (data line in/out), while pins 1 and 4 serve exclusively as low-inductance ground terminals. Capacitance drops from 1.5 pF at 0 V to 1.3 pF at 15 V reverse bias, preserving signal integrity on 480 Mbps USB 2.0 channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | ±15 V - defines maximum continuous DC or AC RMS signal swing before leakage exceeds 0.1 µA |
| Capacitance @ 0 V | 1.5–2.0 pF - enables <1% signal distortion on 480 Mbps USB 2.0 differential pairs |
| Clamping Voltage @ 10 A | 26–30 V - limits transient overvoltage during 8/20 µs surges to protect downstream 3.3 V logic |
| ESD Immunity | ±30 kV contact - exceeds IEC 61000-4-2 Level 4 for handheld and industrial interface ports |
| ESD Clamping Peak | ≤130 V @ ±8 kV - suppresses fast-rising ESD transients within 1 ns to prevent latch-up in PHY ICs |
| Package | SOT143 - 4-pin surface-mount with 1.3 mm × 2.1 mm footprint and 0.95 mm height for compact PCB layout |
Pinout & Package
SOT143 package: 4-terminal plastic molded case with gull-wing leads, UL 94 V-0 rated compound, 8 mg mass, lead (Pb)-free, RoHS-compliant. Marking "GC1" identifies type code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground | Low-inductance return path for clamping current; must connect directly to solid ground plane |
| Pin 2 | Data Line In | Input terminal for protected signal line (e.g., USB D+); forms one side of symmetrical clamp path |
| Pin 3 | Data Line Out | Output terminal for protected signal line (e.g., USB D−); completes bidirectional signal path |
| Pin 4 | Ground | Second low-inductance ground terminal; paired with Pin 1 to minimize loop inductance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Symmetrical Clamping (BiSy) | Identical 16–17 V breakdown and ≤130 V ESD clamping for both polarities eliminates polarity-aware routing |
| Ultra-Low Capacitance | 1.3–2.0 pF across 0–15 V reverse bias preserves signal rise/fall times on >480 Mbps interfaces |
| High ESD Withstand | ±30 kV contact discharge rating meets IEC 61000-4-2 Level 4 without derating or external filtering |
| Optimized Ground Path | Dual ground pins (1 & 4) enable shortest possible return loop, reducing clamping voltage overshoot by ≥15% |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting full-speed USB 2.0 D+ and D− lines against ESD events in portable docking stations. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed inline between connector and USB transceiver PHY. Use Value: Sub-2 pF capacitance avoids signal integrity degradation at 480 Mbps; ±30 kV rating eliminates need for secondary TVS stages. |
Use Scenario: Safeguarding HDMI TMDS clock and data channels in set-top box front-panel connectors. IC Role / Device Role / Timing Role: Single-line ESD suppressor on each differential pair, leveraging BiSy symmetry for polarity-agnostic placement. Use Value: 1.3 pF capacitance at 15 V bias prevents jitter increase beyond HDMI compliance limit of 0.15 UI. |
| Industrial RS-485 Port Protection | Automotive Infotainment Display Link |
Use Scenario: Shielding RS-485 half-duplex bus lines in factory automation gateways exposed to operator touch. IC Role / Device Role / Timing Role: Line-to-ground protector on A/B differential pair, using Pins 2+3 for signal path and Pins 1+4 for ground tie. Use Value: 300 W peak pulse power handles multiple 8/20 µs surges per IEC 61000-4-5 without parameter shift. |
Use Scenario: ESD hardening of MIPI D-PHY lanes connecting head unit SoC to LCD display module in automotive dashboards. IC Role / Device Role / Timing Role: Per-lane protection device mounted adjacent to connector, minimizing trace length to ground pins. Use Value: −40 °C to +125 °C operating range supports under-hood temperature cycling; RoHS/e3 compliance meets automotive material requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5V3U2U-2/TR | Lower clamping voltage (16 V @ 1 A), higher capacitance (3.5 pF), SOT-23-3 package | Single-directional; requires separate devices per polarity on differential lines | Preferable where lower clamping voltage outweighs added board area and routing complexity |
| TPD2E001DRYR | 2-channel array, 1.5 pF typical capacitance, ±12 V working voltage, same SOT-143 footprint | Designed for dual-line protection (e.g., USB D+/D− simultaneously); lower VRWM reduces margin for 15 V systems | Preferred when protecting two matched lines with shared ground and space-constrained layouts |
Compared with GCDA15C-1-GS08, ES5V3U2U-2/TR offers tighter clamping but sacrifices bidirectionality and adds layout overhead, while TPD2E001DRYR provides dual-line integration at reduced working voltage margin-making GCDA15C-1-GS08 optimal for single-line ±15 V applications demanding symmetry and minimal capacitance.
Availability
GCDA15C-1-GS08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS lane hardening, and industrial RS-485 port safeguarding requiring stable component supply across production lifecycles.
Supply support for GCDA15C-1-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 parametric precision.
The GCDA15C-1-GS08 belongs to Vishay's BiSy-series of ultra-low-capacitance ESD suppressors, engineered specifically for high-speed serial interfaces where signal fidelity and robust transient suppression must coexist.
FAQ
What is the maximum continuous reverse voltage rating for GCDA15C-1-GS08?
The GCDA15C-1-GS08 has a reverse working voltage (VRWM) of ±15 V, verified at IR = 0.1 µA. This means it sustains up to ±15 V DC or peak AC signal levels without exceeding specified leakage, making it suitable for 12 V and 15 V data bus applications. The device breaks down at 16–17 V (VR), providing a defined safety margin above VRWM. GCDA15C-1-GS08 must not be operated continuously above ±15 V in production designs.
How does the BiSy-mode architecture of GCDA15C-1-GS08 affect PCB layout?
GCDA15C-1-GS08 uses BiSy-mode, requiring signal routing through Pins 2 and 3 while connecting Pins 1 and 4 directly to a low-inductance ground plane. This layout minimizes current-loop area and reduces clamping voltage overshoot during ESD events. Deviating from this-such as using only one ground pin-degrades clamping performance by up to 25%. GCDA15C-1-GS08 achieves optimal protection only when both ground pins are independently tied to ground with short, wide traces.
What is the capacitance of GCDA15C-1-GS08 at 15 V reverse bias and why does it matter?
At 15 V reverse bias and 1 MHz, GCDA15C-1-GS08 exhibits 1.3 pF typical capacitance, confirmed in Vishay's Document Number 85856. This low, voltage-stable capacitance prevents signal attenuation and timing skew on high-speed links like USB 2.0 (480 Mbps) and HDMI TMDS. Higher capacitance would increase RC delay and intersymbol interference-GCDA15C-1-GS08's 1.3 pF value ensures compliance with USB 2.0 eye diagram masks and HDMI jitter specifications.
Can GCDA15C-1-GS08 replace unidirectional ESD diodes in existing designs?
GCDA15C-1-GS08 is strictly bidirectional and cannot substitute for unidirectional diodes without circuit review. Its symmetrical clamping requires both signal and ground connections to be re-routed per BiSy layout rules-Pins 2+3 for signal path, Pins 1+4 for ground. Replacing a unidirectional part may invert signal polarity or create floating nodes. GCDA15C-1-GS08 is only drop-in compatible with other BiSy-rated SOT143 devices such as GCDA12C-1-GS08, not generic unidirectional TVS diodes.
What is the peak clamping voltage of GCDA15C-1-GS08 under IEC 61000-4-2 ±8 kV contact discharge?
Under ±8 kV contact discharge per IEC 61000-4-2, GCDA15C-1-GS08 delivers a peak clamping voltage (VCESD) of ≤130 V, measured at the device terminals. This value is critical for ensuring downstream 3.3 V or 5 V ICs remain below absolute maximum ratings during ESD events. The clamping occurs within <1 ns, and GCDA15C-1-GS08 maintains this performance across its full −40 °C to +125 °C operating range without derating.
GCDA15C-1-GS08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-253-4, TO-253AA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 10A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1.5pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143
GCDA15C-1-GS08 FAQ
1.How can I place an order for GCDA15C-1-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GCDA15C-1-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 GCDA15C-1-GS08 reliable?
The price and inventory of GCDA15C-1-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GCDA15C-1-GS08 is usually 5 days.
3.What payment methods are accepted for GCDA15C-1-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GCDA15C-1-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GCDA15C-1-GS08?
GCDA15C-1-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GCDA15C-1-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 GCDA15C-1-GS08?
For technical support, including GCDA15C-1-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GCDA15C-1-GS08 requirements.
6.How does Aetrix verify that GCDA15C-1-GS08 is sourced from the original manufacturer or authorized distributors?
All GCDA15C-1-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 GCDA15C-1-GS08 meets industry standards.
7.What is the process for return or replacement of GCDA15C-1-GS08?
All GCDA15C-1-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with GCDA15C-1-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 GCDA15C-1-GS08 part is unused and in its original packaging.
Return procedure for GCDA15C-1-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GCDA15C-1-GS08 Tags
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