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Vishay General Semiconductor - Diodes Division GSOT03-HT3-GS08
- Part No.:
- GSOT03-HT3-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- 3-WDFN
- Datasheet:
-
GSOT03-HT3-GS08.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC LLP75-3B
- Quantity:
- Payment:
- Shipping:
Inventory:9,461
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Product details
Overview
GSOT03-HT3-GS08 from Vishay Semiconductors is a single-line bidirectional asymmetrical (BiAs) ESD protection diode in LLP75-3B package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 3.3 V reverse standoff voltage (VRWM), and 30 A peak pulse current (IPPM), used to safeguard high-speed data lines such as USB 2.0 or HDMI interfaces against electrostatic discharge.
For engineers reviewing the GSOT03-HT3-GS08 datasheet, GSOT03-HT3-GS08 pinout, GSOT03-HT3-GS08 application, or GSOT03-HT3-GS08 equivalent, this device delivers low clamping voltage (10–12.3 V at 30 A), sub-600 pF capacitance at 0 V bias, and MSL Level 1 solderability - critical for compact, high-reliability consumer and industrial interface protection designs.
Technical Context
The GSOT03-HT3-GS08 operates in BiAs-mode: pin 1 is ground, pin 3 connects to the protected signal line, and pin 2 serves as internal connection point enabling asymmetrical clamping - forward conduction near 0 V (VF ≤ 4.5 V at 30 A) and reverse breakdown at 4.0–4.6 V (VBR). This architecture provides tighter negative transient control than symmetrical TVS devices.
Its 3.3 V VRWM ensures compatibility with 3.3 V logic systems while maintaining <100 µA leakage at rated voltage; clamping performance is validated per IEC 61000-4-5 (8/20 µs waveform), delivering 369 W peak pulse power (PPP) and 12.3 V max VC at IPPM = 30 A - optimized for fast, low-distortion transient suppression on sensitive data paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 3.3 V - ensures no interference with 3.3 V signal integrity during normal operation |
| Peak Pulse Current (IPPM) | 30 A - withstands severe IEC 61000-4-5 surge events on protected line |
| Clamping Voltage (VC) | 10–12.3 V at 30 A - limits transient voltage to safe levels for downstream 3.3 V ICs |
| Capacitance (CD) | 420–600 pF at 0 V / 260 pF at 1.6 V - balances ESD robustness and signal integrity for <100 Mbps data lines |
| ESD Immunity | ±30 kV contact & air discharge (IEC 61000-4-2) - exceeds industrial and consumer immunity requirements |
| Package | LLP75-3B - 1.2 × 0.8 × 0.5 mm footprint enables ultra-compact PCB layout for space-constrained ports |
| Operating Temperature | −40 °C to +125 °C - supports automotive infotainment and industrial control environments |
Pinout & Package
GSOT03-HT3-GS08 uses the LLP75-3B surface-mount package: 3-terminal leadless plastic package with 0.5 mm pitch, matte tin (e3) finish, UL 94 V-0 molding compound, and MSL Level 1 rating for reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground reference terminal | Connected directly to system ground plane; forms return path for ESD current |
| Pin 2 | Internal node (anode/cathode junction) | Not externally accessible; enables BiAs clamping behavior between pins 1 and 3 |
| Pin 3 | Protected signal line input | Connects to data line (e.g., USB D+, HDMI TMDS+); subjected to bidirectional transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Asymmetrical (BiAs) Clamping | Clamps negative transients near 0 V (VF ≤ 4.5 V) and positive transients at 10–12.3 V - preserves signal DC level while suppressing both polarities |
| Ultra-Low Leakage Current | <100 µA at 3.3 V VRWM - prevents loading of high-impedance data lines and reduces standby power loss |
| Space-Saving LLP75-3B Package | 1.2 × 0.8 mm footprint with 0.5 mm pitch - fits within tight spacing of USB micro-B or HDMI Type-A connectors |
| Lead (Pb)-Free & RoHS-Compliant | e3 matte tin termination and green molding compound - meets global environmental compliance mandates without derating |
| High Surge Robustness | 369 W peak pulse power (PPP) at 8/20 µs - sustains multiple IEC 61000-4-5 surges without degradation |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
|
Use Scenario: Protecting D+ and D− lines in portable USB host/peripheral devices exposed to frequent handling and static-prone environments. IC Role / Device Role / Timing Role: ESD transient suppressor placed immediately before USB connector, operating in BiAs mode to clamp ±30 kV discharges without distorting 480 Mbps data eye. Use Value: Maintains signal integrity via 420–600 pF capacitance and clamps transients below 12.3 V - preventing latch-up or damage to USB transceivers. |
Use Scenario: Safeguarding TMDS clock and data channels in set-top boxes, monitors, and AV receivers where HDMI ports are user-accessible. IC Role / Device Role / Timing Role: Single-line ESD protector per TMDS lane, leveraging low VF clamping to avoid DC offset shift on differential pairs during negative ESD events. Use Value: Enables reliable hot-plug operation by meeting IEC 61000-4-2 Level 4 while adding <0.1 mm² PCB area per channel. |
| Industrial Serial Port Protection | Automotive Infotainment Data Lines |
|
Use Scenario: Shielding RS-232/RS-485 transceiver I/O pins in factory automation controllers subject to maintenance-related ESD. IC Role / Device Role / Timing Role: Standalone ESD shunt on each signal line, using 3.3 V VRWM to match logic-level UART signals without false triggering. Use Value: Delivers −40 °C to +125 °C operation and 30 A surge capability - ensuring long-term reliability in uncontrolled industrial settings. |
Use Scenario: Protecting AUX-in, USB-C, or display link lines in head units where dashboard-mounted ports face repeated human contact. IC Role / Device Role / Timing Role: BiAs-mode protector on analog audio or digital video lines, minimizing capacitance-induced jitter while passing AEC-Q200 stress screening. Use Value: Achieves automotive-grade robustness with MSL Level 1 reflow compatibility and RoHS/WEEE compliance - simplifying supply chain qualification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Unidirectional, DO-214AC package (4.3 × 2.6 mm), 3.3 V VRWM, 12.3 V VC at 22.5 A | Larger footprint, higher parasitic inductance, only protects positive transients - requires external series resistor or dual-diode configuration for full bidirectional coverage | Select when board space allows larger packages and design already uses SMA/SMB footprints; not drop-in for LLP75-3B layouts |
| TPD4E001DRYR | Quad-channel, X2SON-8 package, 3.6 V VRWM, 12 V VC at 4 A, 12 pF typical capacitance | Lower capacitance ideal for USB 3.0/PCIe, but lower IPPM (4 A) limits surge handling; quad integration reduces per-channel cost but increases complexity for single-line use | Prefer for multi-line protection or high-speed (>1 Gbps) interfaces; GSOT03-HT3-GS08 remains optimal for cost-sensitive, single-line 3.3 V applications needing 30 A surge margin |
Compared with SMAJ3.3A and TPD4E001DRYR, GSOT03-HT3-GS08 uniquely combines 30 A surge rating, BiAs clamping, and sub-1 mm² LLP75-3B packaging - making it the most space-efficient and robust choice for discrete single-line 3.3 V interface protection where high-energy ESD events are expected.
Availability
GSOT03-HT3-GS08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line safeguarding, and industrial serial port hardening requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for GSOT03-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 industrial, automotive, and computing markets.
The GSOT-HT3 family was engineered specifically for compact, high-surge-capacity ESD protection of low-voltage data lines - emphasizing low clamping, controlled capacitance, and lead-free manufacturability in ultra-small packages.
FAQ
What is the primary circuit role of GSOT03-HT3-GS08 in a system?
The GSOT03-HT3-GS08 functions as a single-line bidirectional asymmetrical (BiAs) ESD protection diode. It is placed between a signal line (pin 3) and ground (pin 1) to divert electrostatic discharge transients away from sensitive downstream ICs. Its BiAs architecture ensures low-voltage clamping for negative transients (near 0 V) and controlled clamping for positive transients (≤12.3 V at 30 A), preserving signal integrity while meeting IEC 61000-4-2 ±30 kV requirements. The GSOT03-HT3-GS08 does not regulate voltage or provide overvoltage shutdown - its sole role is transient suppression.
Does GSOT03-HT3-GS08 support bidirectional signal paths like USB D+ and D−?
Yes, GSOT03-HT3-GS08 supports bidirectional signal paths through its BiAs-mode operation: it clamps both positive and negative transients on the same line without polarity dependence. For USB 2.0, one GSOT03-HT3-GS08 protects D+ and another protects D−, each connected between its respective data line and ground. Its asymmetrical clamping (low VF for negative events, defined VBR/VC for positive events) avoids DC bias shift and maintains signal symmetry - unlike unidirectional TVS diodes that require external biasing or dual configurations. The GSOT03-HT3-GS08 is explicitly validated for such applications in Vishay's documentation.
What is the maximum operating temperature range for GSOT03-HT3-GS08?
The GSOT03-HT3-GS08 has a specified junction temperature range of −40 °C to +125 °C, matching extended industrial and automotive under-hood requirements. This rating is confirmed in the Absolute Maximum Ratings table (Document Number 85822, Rev. 1.8) and applies across all electrical parameters unless otherwise noted. Derating is not required within this range, and the device maintains full IEC 61000-4-2 ±30 kV ESD immunity and 30 A surge capability throughout. The GSOT03-HT3-GS08 achieves this via thermally optimized LLP75-3B package construction and silicon design validated per JESD22-A108.
How does the capacitance of GSOT03-HT3-GS08 affect high-speed data lines?
The GSOT03-HT3-GS08 exhibits 420–600 pF capacitance at 0 V bias and 260 pF at 1.6 V reverse bias (1 MHz), which is optimized for data rates up to 480 Mbps (USB 2.0 full-speed). At typical operating bias (≤3.3 V), this capacitance introduces minimal signal rise-time degradation or insertion loss - verified in Vishay's application guidance for interface protection. Higher-speed protocols (e.g., USB 3.0) require lower capacitance (<15 pF), so the GSOT03-HT3-GS08 is not recommended there. For its target applications, the GSOT03-HT3-GS08 balances ESD robustness and signal fidelity without requiring impedance-matching compensation.
Is GSOT03-HT3-GS08 compatible with lead-free reflow soldering processes?
Yes, GSOT03-HT3-GS08 is fully compatible with lead-free reflow soldering: it carries an e3 matte tin finish, conforms to RoHS 2002/95/EC, and is rated MSL Level 1 per J-STD-020 - meaning it may be stored indefinitely at ≤30 °C/60% RH without baking. The device is qualified for peak reflow temperatures of 260 °C for 10 seconds at terminals, aligning with standard Pb-free SAC305 profiles. No special handling, pre-baking, or moisture barrier packaging is required prior to assembly. This specification is documented in the Package Data table for GSOT03-HT3-GS08 in Vishay's datasheet.
GSOT03-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Min)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 369W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 420pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LLP75-3B
GSOT03-HT3-GS08 FAQ
1.How can I place an order for GSOT03-HT3-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT03-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 GSOT03-HT3-GS08 reliable?
The price and inventory of GSOT03-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 GSOT03-HT3-GS08 is usually 5 days.
3.What payment methods are accepted for GSOT03-HT3-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT03-HT3-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT03-HT3-GS08?
GSOT03-HT3-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT03-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 GSOT03-HT3-GS08?
For technical support, including GSOT03-HT3-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT03-HT3-GS08 requirements.
6.How does Aetrix verify that GSOT03-HT3-GS08 is sourced from the original manufacturer or authorized distributors?
All GSOT03-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 GSOT03-HT3-GS08 meets industry standards.
7.What is the process for return or replacement of GSOT03-HT3-GS08?
All GSOT03-HT3-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT03-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 GSOT03-HT3-GS08 part is unused and in its original packaging.
Return procedure for GSOT03-HT3-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT03-HT3-GS08 Tags
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