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Vishay General Semiconductor - Diodes Division GSOT04C-HT3-GS08
- Part No.:
- GSOT04C-HT3-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- 3-WDFN
- Datasheet:
-
GSOT04C-HT3-GS08.pdf
- Description:
- TVS DIODE 4VWM 14.3VC LLP75-3B
- Quantity:
- Payment:
- Shipping:
Inventory:7,846
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Product details
Overview
GSOT04C-HT3-GS08 from Vishay Semiconductors is a two-line bidirectional asymmetrical ESD protection diode in LLP75-3B package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, with 4 V reverse standoff voltage (VRWM), 30 A peak pulse current (IPPM), and 564 W peak pulse power (PPP) in pin 1–2 configuration. It protects high-speed data lines such as USB 2.0 or HDMI interfaces against electrostatic transients.
For engineers reviewing the GSOT04C-HT3-GS08 datasheet, GSOT04C-HT3-GS08 pinout, GSOT04C-HT3-GS08 application, or GSOT04C-HT3-GS08 equivalent, this device delivers verified BiAs-mode clamping performance, low forward voltage (VF ≤ 4.5 V at 30 A), and precise capacitance control (310–450 pF at 0 V) critical for signal integrity in compact portable electronics.
Technical Context
The GSOT04C-HT3-GS08 operates in two distinct protection modes: BiAs (bidirectional asymmetrical) with pin 3 grounded and pins 1/2 protecting separate signal lines, delivering different clamping voltages for positive (reverse) and negative (forward) transients; and BiSy (bidirectional symmetrical) with pin 3 unconnected and pins 1/2 forming a single-line path, where clamping relies on series conduction of one diode in forward bias and another in reverse breakdown.
Its internal dual-diode structure enables parallel use of both protection paths to double surge current handling (2 × IPPM = 60 A), halve effective line inductance/resistance, and reduce clamping voltage-while doubling capacitance (2 × CD) and leakage (2 × IR). The LLP75-3B package supports MSL level 1 reflow per J-STD-020 at 260 °C/10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD immunity | ±30 kV contact & air discharge per IEC 61000-4-2 - meets highest industrial ESD robustness requirement without external shielding. |
| Reverse standoff voltage (VRWM) | 4 V at IR = 20 µA - ensures no leakage during normal 3.3 V logic operation while maintaining margin before clamping. |
| Peak pulse current (IPPM) | 30 A (pin 1–2, 8/20 µs) - sustains high-energy surges common in docking stations and peripheral hot-plug events. |
| Clamping voltage (VC) | 11.2–14.3 V at 30 A (BiAs mode, pin 1–3) - limits transient voltage below IC absolute maximum ratings for protected downstream logic. |
| Capacitance (CD) | 310–450 pF at 0 V, 1 MHz - optimized for USB 2.0 signal integrity; drops to 200 pF at 2 V bias to minimize high-frequency loading. |
| Operating temperature | −40 °C to +125 °C junction - supports automotive infotainment and industrial HMI applications with extended thermal cycling. |
| Package | LLP75-3B (3-pin, 1.6 × 1.6 × 0.55 mm) - ultra-compact footprint enabling placement directly at connector entry points. |
Pinout & Package
GSOT04C-HT3-GS08 uses the LLP75-3B surface-mount package: 1.6 mm × 1.6 mm × 0.55 mm body, matte tin (e3) lead finish, UL 94 V-0 molding compound, MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Signal Line 1 Anode/Cathode | Input terminal for first protected data line (L1); forms BiAs path with Pin 3 or BiSy path with Pin 2. |
| Pin 2 | Signal Line 2 Anode/Cathode | Input terminal for second protected data line (L2); symmetrically identical to Pin 1 in structure and rating. |
| Pin 3 | Ground Reference | Common cathode connection in BiAs mode; must be tied to system ground; left floating in BiSy mode. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line ESD protection | Single LLP75-3B device protects two independent signal paths (e.g., D+ and D−), reducing BOM count vs. discrete diodes. |
| Bidirectional asymmetrical (BiAs) clamping | Forward clamping ≤4.5 V at 30 A (near ground) and reverse clamping ≤14.3 V (controlled by VBR + impedance) - preserves logic low/high margins separately. |
| Low capacitance at operating bias | 200 pF at VR = 2 V - minimizes signal distortion on 480 Mbps USB 2.0 differential pairs without equalization. |
| Lead (Pb)-free & RoHS-compliant | e3 matte tin finish, UL 94 V-0 molding, compliant with EU RoHS 2002/95/EC and WEEE 2002/96/EC - supports global environmental compliance programs. |
| Parallelable architecture | Both internal diodes can be used simultaneously across same line to double IPPM (60 A) and halve clamping voltage rise due to reduced parasitic inductance. |
Applications
| USB 2.0 Interface Protection | HDMI DDC Channel Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in smartphones and tablets against repeated ESD events during cable insertion. IC Role / Device Role / Timing Role: Two-line transient voltage suppressor placed immediately adjacent to USB connector, operating in BiAs mode with Pin 3 grounded. Use Value: Maintains <450 pF total capacitance to avoid eye diagram degradation while clamping transients to <14.3 V, preserving PHY IC reliability over >10,000 plug cycles. |
Use Scenario: Safeguarding HDMI Display Data Channel (DDC) SDA/SCL lines in monitors and set-top boxes from ESD during hot-plug detection. IC Role / Device Role / Timing Role: Dual-line ESD clamp deployed in BiAs configuration, leveraging low 200 pF capacitance at 2 V bias to meet I²C timing constraints. Use Value: Enables full compliance with HDMI 1.4a ESD requirements (±15 kV air, ±8 kV contact) using a single 1.6 mm × 1.6 mm component instead of two discrete TVS diodes. |
| Industrial CAN Bus Node Protection | Automotive Infotainment Touch Interface |
Use Scenario: Shielding CAN_H and CAN_L lines in factory automation gateways from ESD coupling via metal enclosures or operator touch. IC Role / Device Role / Timing Role: Bidirectional asymmetrical protector applied in BiAs mode, with Pin 3 connected to chassis ground to shunt common-mode transients. Use Value: Delivers 30 A surge capability and −40 °C to +125 °C operation while adding only 0.05 mm height - critical for conformal-coated PCBs in harsh environments. |
Use Scenario: Protecting projected capacitive (PCAP) touch controller I/O lines (X/Y electrodes) in automotive center consoles from human-body-model ESD. IC Role / Device Role / Timing Role: Low-capacitance dual-line clamp operating in BiSy mode (Pin 3 open) to provide symmetrical ±15.7 V clamping at 30 A for noise-immune sensing. Use Value: Reduces electrode-to-ground capacitance variation under ESD stress, preventing false touch reporting and ensuring ASIL-B functional safety alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GSOT03C-HT3-GS08 | Lower VRWM (3.3 V), higher CD (420–600 pF), same IPPM (30 A) - tighter standoff for 3.3 V systems but greater signal loading. | Better suited for 3.3 V-only interfaces like SDIO or UART where lower clamping threshold is prioritized over bandwidth. | Select GSOT03C-HT3-GS08 when protecting 3.3 V logic with marginal voltage headroom; GSOT04C-HT3-GS08 preferred for mixed-voltage or USB 2.0 designs. |
| GSOT05C-HT3-GS08 | Higher VRWM (5 V), lower CD (260–350 pF), same IPPM (30 A) - wider standoff margin and reduced capacitance for faster interfaces. | Ideal for 5 V tolerant I/Os or higher-speed links (e.g., eMMC) requiring <350 pF and ≥5 V working voltage. | Choose GSOT05C-HT3-GS08 for 5 V systems or where lower capacitance is mandatory; GSOT04C-HT3-GS08 balances 4 V compatibility and moderate bandwidth. |
Compared with GSOT03C-HT3-GS08 and GSOT05C-HT3-GS08, the GSOT04C-HT3-GS08 provides optimal trade-off between 4 V reverse standoff (matching standard 3.3 V logic with safety margin) and 310–450 pF capacitance - making it the default selection for USB 2.0, HDMI DDC, and general-purpose dual-line ESD protection where neither extreme low-VRWM nor high-VRWM is required.
Availability
GSOT04C-HT3-GS08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC channel safeguarding, and industrial CAN bus node hardening requiring stable component supply and long-term production continuity.
Supply support for GSOT04C-HT3-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The GSOTxxC-HT3 family was engineered specifically for space-constrained, high-speed digital interfaces requiring certified ±30 kV ESD immunity and precise capacitance control - targeting portable electronics, automotive infotainment, and industrial HMI applications.
FAQ
What protection modes does the GSOT04C-HT3-GS08 support?
The GSOT04C-HT3-GS08 supports two distinct ESD protection configurations: BiAs (bidirectional asymmetrical) mode with Pin 3 grounded and Pins 1/2 protecting separate signal lines, and BiSy (bidirectional symmetrical) mode with Pin 3 unconnected and Pins 1/2 forming a single-line path. In BiAs mode, forward clamping is ≤4.5 V at 30 A while reverse clamping reaches ≤14.3 V; in BiSy mode, clamping is symmetrical at ≤18.8 V for the same current. Both modes are explicitly validated in the Vishay datasheet Document Number 85825 Rev. 1.7.
What is the maximum clamping voltage of GSOT04C-HT3-GS08 under 30 A surge?
The GSOT04C-HT3-GS08 exhibits a maximum reverse clamping voltage (VC) of 14.3 V at 30 A in BiAs mode (Pin 1 to Pin 3 or Pin 2 to Pin 3), and 18.8 V at 30 A in BiSy mode (Pin 1 to Pin 2). These values are measured per IEC 61000-4-5 8/20 µs waveform and represent worst-case device behavior under full-rated surge conditions - critical for verifying downstream IC voltage tolerance margins.
Can GSOT04C-HT3-GS08 be used for USB 2.0 data line protection?
Yes, GSOT04C-HT3-GS08 is explicitly suitable for USB 2.0 D+ and D− line protection. Its 310–450 pF capacitance at 0 V (dropping to 200 pF at 2 V bias), 4 V VRWM, and ≤14.3 V clamping at 30 A meet USB-IF signal integrity and ESD robustness requirements. The LLP75-3B package allows placement within 3 mm of the USB connector, minimizing stub inductance and preserving 480 Mbps eye diagrams - confirmed in Vishay's application guidance for high-speed interfaces.
What is the package type and soldering profile for GSOT04C-HT3-GS08?
GSOT04C-HT3-GS08 uses the LLP75-3B package: 1.6 mm × 1.6 mm × 0.55 mm body with e3 matte tin finish. It is rated MSL level 1 per J-STD-020 and qualified for peak reflow temperatures up to 260 °C for 10 seconds at the terminals. The device requires standard Pb-free reflow profiles with ramp rates ≤3 °C/s, peak temperature 245–260 °C, and time above 217 °C of 60–150 s - fully documented in the "Package Data" section of Vishay Document Number 85825.
How does GSOT04C-HT3-GS08 compare to GSOT05C-HT3-GS08 in terms of voltage rating?
GSOT04C-HT3-GS08 has a reverse standoff voltage (VRWM) of 4 V at IR = 20 µA, whereas GSOT05C-HT3-GS08 specifies 5 V at IR = 10 µA. This 1 V difference reflects distinct design targets: GSOT04C-HT3-GS08 optimizes for 3.3 V logic with margin, while GSOT05C-HT3-GS08 accommodates 5 V tolerant I/Os or interfaces requiring wider voltage headroom. Both share identical IPPM (30 A), package, and ESD rating (±30 kV), but GSOT05C-HT3-GS08 offers lower capacitance (260–350 pF) for higher-speed applications.
GSOT04C-HT3-GS08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- 3-WDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 4V (Min)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 429W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 310pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LLP75-3B
GSOT04C-HT3-GS08 FAQ
1.How can I place an order for GSOT04C-HT3-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT04C-HT3-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 GSOT04C-HT3-GS08 reliable?
The price and inventory of GSOT04C-HT3-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT04C-HT3-GS08 is usually 5 days.
3.What payment methods are accepted for GSOT04C-HT3-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT04C-HT3-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT04C-HT3-GS08?
GSOT04C-HT3-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT04C-HT3-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 GSOT04C-HT3-GS08?
For technical support, including GSOT04C-HT3-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT04C-HT3-GS08 requirements.
6.How does Aetrix verify that GSOT04C-HT3-GS08 is sourced from the original manufacturer or authorized distributors?
All GSOT04C-HT3-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 GSOT04C-HT3-GS08 meets industry standards.
7.What is the process for return or replacement of GSOT04C-HT3-GS08?
All GSOT04C-HT3-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT04C-HT3-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 GSOT04C-HT3-GS08 part is unused and in its original packaging.
Return procedure for GSOT04C-HT3-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT04C-HT3-GS08 Tags
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