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Vishay General Semiconductor - Diodes Division GSOT36-HT3-GS08
- Part No.:
- GSOT36-HT3-GS08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- 3-WDFN
- Datasheet:
-
GSOT36-HT3-GS08.pdf
- Description:
- TVS DIODE 36VWM 71VC LLP75-3B
- Quantity:
- Payment:
- Shipping:
Inventory:3,911
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Product details
Overview
GSOT36-HT3-GS08 from Vishay Semiconductors is a single-line bidirectional asymmetrical (BiAs) ESD protection diode in LLP75-3B package, rated for 36 V reverse standoff voltage (VRWM), ±30 kV IEC 61000-4-2 ESD immunity, and 3.5 A peak pulse current (IEC 61000-4-5, 8/20 µs), used to safeguard high-speed data lines such as USB 2.0 or HDMI interfaces against transient overvoltage.
For engineers reviewing the GSOT36-HT3-GS08 datasheet, GSOT36-HT3-GS08 pinout, GSOT36-HT3-GS08 application, or GSOT36-HT3-GS08 equivalent, key selection criteria include its 36 V VRWM, low 12 pF capacitance at 18 V bias, 1.3 V forward clamping at 3.5 A, BiAs-mode asymmetry for optimized signal integrity, and LLP75-3B footprint compatibility with space-constrained PCB layouts.
Technical Context
The GSOT36-HT3-GS08 operates in BiAs (Bidirectional Asymmetrical) mode between pin 3 (signal line) and pin 1 (ground), providing distinct clamping behavior: reverse transients are clamped above 39 V (VBR) with VC ≤ 71 V at 3.5 A, while negative transients are clamped near ground via low VF ≤ 1.3 V. This asymmetry preserves DC bias stability on unidirectional signal paths.
Its 52–65 pF capacitance at 0 V bias drops to 12 pF at 18 V reverse bias, enabling use on 480 Mbps USB 2.0 lines without signal degradation. The device meets IEC 61000-4-2 (±30 kV contact/air) and IEC 61000-4-5 (3.5 A, 8/20 µs) standards, with MSL level 1 handling and lead-free matte tin (e3) termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 36 V - Maximum continuous operating voltage before leakage exceeds 1 µA; defines safe DC bias range for protected signal lines. |
| Reverse Breakdown Voltage (VBR) | 39–43 V at 1 mA - Threshold where avalanche conduction begins; sets lower bound of clamping onset for positive transients. |
| Peak Pulse Current (IPPM) | 3.5 A (8/20 µs) - Maximum transient surge current it safely shunts to ground per IEC 61000-4-5; determines robustness against lightning-induced surges. |
| Clamping Voltage (VC) | 59–71 V at 3.5 A - Maximum voltage seen by protected IC during worst-case surge; must stay below downstream IC's absolute maximum rating. |
| Capacitance (CD) | 12 pF at 18 V, 1 MHz - Low dynamic capacitance at operating bias ensures minimal signal distortion on high-speed data lines like USB 2.0. |
| ESD Immunity | ±30 kV contact & air discharge (IEC 61000-4-2) - Guarantees survivability against human-body-model ESD events in handheld and industrial equipment. |
| Package | LLP75-3B - 1.6 × 1.6 × 0.55 mm surface-mount package with 0.5 mm pitch; enables ultra-compact layout for portable electronics. |
Pinout & Package
GSOT36-HT3-GS08 uses the LLP75-3B package: 3-terminal leadless plastic package with exposed thermal pad, dimensions 1.6 mm × 1.6 mm × 0.55 mm, 0.5 mm pin pitch, and pin 1 marked by dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground (GND) | Low-inductance return path for ESD current; must be connected to solid system ground plane for effective clamping. |
| Pin 2 | Internal Connection / Thermal Pad | Exposed copper thermal pad tied internally to cathode; requires solder paste stencil opening and thermal via array for optimal power dissipation. |
| Pin 3 | Signal Line (Anode/Cathode Junction) | Connection point for protected data line; BiAs architecture allows bidirectional clamping with asymmetric voltage thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Asymmetrical (BiAs) Clamping | Enables stable DC bias on unidirectional signal paths while clamping both polarities: +36 V standoff with 39–43 V breakdown, and <1.3 V forward clamping for negative transients. |
| Ultra-Low Capacitance at Operating Bias | 12 pF at 18 V reverse bias minimizes insertion loss and jitter on 480 Mbps USB 2.0, HDMI, or DisplayPort lines. |
| High ESD Robustness | ±30 kV contact and air discharge per IEC 61000-4-2 ensures reliability in consumer, industrial, and medical touch-interface applications. |
| Lead-Free & RoHS-Compliant Construction | Matte tin (e3) finish, UL 94 V-0 molding compound, and MSL level 1 rating support automated reflow assembly and long-term supply compliance. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in smartphones, tablets, and docking stations from ESD events during cable insertion or user handling. IC Role / Device Role / Timing Role: Single-line ESD suppressor placed directly at connector, operating in BiAs mode to preserve 480 Mbps differential signaling integrity. Use Value: 12 pF capacitance at 18 V bias prevents signal rise-time degradation, while ±30 kV ESD rating eliminates field failures due to human-body discharges. |
Use Scenario: Safeguarding TMDS data channels (0/1/2) in HDMI 1.4 receivers and transmitters against ESD during hot-plug events or board-level handling. IC Role / Device Role / Timing Role: Per-lane transient voltage suppressor with low clamping voltage and minimal parasitic capacitance to maintain eye diagram compliance. Use Value: 59–71 V clamping at 3.5 A ensures protected SoC I/O stays within 1.8 V or 3.3 V absolute maximum ratings, even under worst-case surge conditions. |
| Industrial Sensor Interface | Medical Touchscreen Controller |
Use Scenario: Shielding analog or digital sensor outputs (e.g., RS-485, CAN FD stubs, or I²C lines) in factory automation equipment exposed to electrostatic environments. IC Role / Device Role / Timing Role: Point-of-entry ESD clamp on signal traces routed from external connectors to microcontroller peripherals. Use Value: 36 V VRWM supports 24 V industrial bus systems; 1 µA leakage at 36 V ensures no loading on high-impedance sensor outputs. |
Use Scenario: Protecting projected-capacitive touchscreen controller I/O pins (e.g., I²C SDA/SCL, reset, interrupt) in diagnostic imaging devices and patient monitors. IC Role / Device Role / Timing Role: Low-leakage, low-capacitance ESD guard for noise-sensitive analog front-end and digital control signals. Use Value: 1 µA reverse leakage at 36 V avoids DC offset errors in precision analog circuits; RoHS/WEEE compliance meets medical regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Unidirectional, DO-214AC package, 36 V VBR, 100 A IPPM, 115 pF capacitance. | Higher capacitance and larger footprint limit use to lower-speed lines (e.g., RS-232); unsuitable for USB/HDMI. | Select when higher surge current rating is required and board space permits larger package. |
| TPD2E001DRYR | Two-channel, SOT-563 package, 5 V VRWM, 1.5 pF typical capacitance, ±8 kV ESD rating. | Lower voltage rating and ESD immunity restrict use to low-voltage logic (e.g., GPIO, SDIO); not suitable for 24–36 V industrial lines. | Select only for 3.3 V or 5 V digital I/O with ultra-low capacitance needs; not a functional replacement for GSOT36-HT3-GS08. |
Compared with SMAJ36A-E3/57T and TPD2E001DRYR, GSOT36-HT3-GS08 uniquely combines 36 V standoff, ±30 kV ESD rating, 12 pF bias-dependent capacitance, and LLP75-3B footprint-making it the only option among the three qualified for high-speed, high-voltage industrial and consumer interface protection without layout compromise.
Availability
GSOT36-HT3-GS08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI data lane hardening, and industrial sensor I/O safeguarding requiring stable component supply across production lifecycles.
Supply support for GSOT36-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 designs and manufactures discrete semiconductors including diodes, MOSFETs, optoelectronics, and passive components, with global manufacturing and quality systems certified to ISO/TS 16949 and ISO 14001.
The GSOT-HT3 series targets compact, high-reliability ESD protection for high-speed data interfaces, emphasizing low capacitance, asymmetrical clamping, and lead-free LLP packaging for next-generation portable and industrial electronics.
FAQ
What is the maximum reverse standoff voltage (VRWM) of the GSOT36-HT3-GS08?
The GSOT36-HT3-GS08 has a maximum reverse standoff voltage (VRWM) of 36 V, measured at 1 µA reverse leakage current. This value defines the highest continuous DC or peak AC voltage the device can block without significant conduction, making it suitable for protecting 24 V industrial buses and 3.3 V/5 V logic lines with margin. The GSOT36-HT3-GS08 maintains leakage below 1 µA up to this voltage, ensuring minimal loading on sensitive signal paths.
How does the BiAs-mode operation benefit circuit design with the GSOT36-HT3-GS08?
The BiAs (Bidirectional Asymmetrical) mode of the GSOT36-HT3-GS08 provides distinct clamping thresholds: ~39–43 V for positive transients and <1.3 V for negative transients. This asymmetry allows stable DC bias on unidirectional signal lines (e.g., USB D+ referenced to ground) while still suppressing both polarities of ESD. Unlike symmetrical TVS diodes, the GSOT36-HT3-GS08 avoids forward conduction during normal operation, preserving signal integrity and reducing power loss.
What is the capacitance of the GSOT36-HT3-GS08 at operating bias, and why does it matter?
The GSOT36-HT3-GS08 exhibits 12 pF capacitance at 18 V reverse bias and 1 MHz, dropping from 52–65 pF at 0 V. This voltage-dependent capacitance is critical for high-speed interfaces: at typical USB 2.0 common-mode bias (~1.8–2.5 V), capacitance remains low enough (<25 pF) to avoid signal attenuation or timing skew. The GSOT36-HT3-GS08's bias-tuned capacitance ensures compliance with USB 2.0 eye diagram masks without requiring additional impedance matching.
Can the GSOT36-HT3-GS08 replace older GSOTxx-HT3 variants in existing designs?
The GSOT36-HT3-GS08 is pin-compatible with other GSOTxx-HT3 family members (e.g., GSOT05-HT3-GS08, GSOT12-HT3-GS08) in the LLP75-3B package, sharing identical footprint, thermal pad layout, and pinout (pin 1 = GND, pin 3 = signal). However, its 36 V VRWM and lower IPPM (3.5 A vs. 30 A for GSOT03-HT3-GS08) mean it is not a drop-in substitute for lower-voltage variants-replacement requires verifying that the protected line's operating voltage and surge profile align with GSOT36-HT3-GS08's specifications.
What are the soldering requirements for the GSOT36-HT3-GS08's LLP75-3B package?
The GSOT36-HT3-GS08's LLP75-3B package requires reflow soldering at peak temperature of 260 °C for 10 seconds at terminals, per J-STD-020 MSL level 1. Its exposed thermal pad (pin 2) must be soldered with ≥70% coverage using a 0.25 mm stencil aperture and ≥4 thermal vias to internal ground planes. The device is RoHS-compliant with matte tin (e3) finish and UL 94 V-0 molding compound, supporting lead-free assembly without special flux or prebake steps.
GSOT36-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):
- 36V (Min)
- Voltage - Breakdown (Min):
- 39V
- Voltage - Clamping (Max) @ Ipp:
- 71V
- Current - Peak Pulse (10/1000µs):
- 3.5A (8/20µs)
- Power - Peak Pulse:
- 248W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 52pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LLP75-3B
GSOT36-HT3-GS08 FAQ
1.How can I place an order for GSOT36-HT3-GS08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT36-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 GSOT36-HT3-GS08 reliable?
The price and inventory of GSOT36-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 GSOT36-HT3-GS08 is usually 5 days.
3.What payment methods are accepted for GSOT36-HT3-GS08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT36-HT3-GS08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT36-HT3-GS08?
GSOT36-HT3-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT36-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 GSOT36-HT3-GS08?
For technical support, including GSOT36-HT3-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT36-HT3-GS08 requirements.
6.How does Aetrix verify that GSOT36-HT3-GS08 is sourced from the original manufacturer or authorized distributors?
All GSOT36-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 GSOT36-HT3-GS08 meets industry standards.
7.What is the process for return or replacement of GSOT36-HT3-GS08?
All GSOT36-HT3-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT36-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 GSOT36-HT3-GS08 part is unused and in its original packaging.
Return procedure for GSOT36-HT3-GS08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT36-HT3-GS08 Tags
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