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Vishay General Semiconductor - Diodes Division GSOT03C-HG3-18
- Part No.:
- GSOT03C-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT03C-HG3-18.pdf
- Description:
- TVS DIODE 3.3VWM 12.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:7,073
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Product details
Overview
GSOT03C-HG3-18 from Vishay Semiconductors is a two-line bidirectional asymmetrical ESD protection diode in SOT-23 package, rated for ±30 kV IEC 61000-4-2 contact/air discharge, 3.3 V reverse stand-off voltage (VRWM), and 30 A peak pulse current (IPPM) per line-to-ground path. It serves as primary transient suppression for low-voltage data lines such as USB 2.0, HDMI DDC, or I²C buses in automotive infotainment and industrial HMI interfaces.
For engineers reviewing the GSOT03C-HG3-18 datasheet, GSOT03C-HG3-18 pinout, GSOT03C-HG3-18 application, or GSOT03C-HG3-18 equivalent, key selection criteria include its BiAs-mode clamping asymmetry (5.7 V typ. reverse clamping at 1 A), 420 pF capacitance at 0 V, SOT-23 footprint compatibility, AEC-Q101 qualification status, and end-of-life timeline (January 2025).
Technical Context
The GSOT03C-HG3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pin 1 and pin 2 connect to protected signal lines, pin 3 to ground, enabling independent clamping of positive transients (via reverse-biased diodes) and negative transients (via forward-biased diodes). Its 4.6 V typical breakdown voltage (VBR) and 1.0 V forward voltage (VF) define asymmetric clamping thresholds.
It supports dual configuration modes - two-line BiAs (pin 3 grounded) or single-line BiSy (pin 3 open, pin 1–2 across line) - with verified performance per IEC 61000-4-5 (8/20 μs surge) and AEC-Q101 H3B-class ESD immunity (>8 kV HBM). Thermal operation spans −55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±30 kV contact/air discharge per IEC 61000-4-2 - meets Level 4 system-level ESD robustness for automotive and industrial ports. |
| Reverse Stand-off Voltage | 3.3 V VRWM - compatible with 3.3 V logic rails without leakage-induced signal degradation. |
| Peak Pulse Current | 30 A per line-to-ground path (IEC 61000-4-5, 8/20 μs) - handles high-energy surges in noisy environments. |
| Clamping Voltage | 5.7 V typ. at 1 A reverse current; 10 V max. at 30 A - limits transient overvoltage to safe levels for downstream 3.3 V ICs. |
| Capacitance | 420 pF typ. at 0 V, 1 MHz - optimized for low-speed interfaces; drops to 260 pF at 1.6 V bias for reduced signal distortion. |
| Package | SOT-23 (JEDEC TO-236) - industry-standard 3-pin footprint enabling drop-in replacement and automated assembly. |
| AEC-Q101 Qualified | Yes - validated for automotive under-hood and cabin applications requiring reliability across thermal and vibration stress. |
Pinout & Package
SOT-23 package: 3-pin surface-mount plastic case, 2.8 mm × 2.6 mm × 1.15 mm body, gull-wing leads, e3 Sn plating, MSL level 1, RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 Anode / Cathode | Connects to first protected signal line (e.g., USB D+); forms one half of BiAs protection path to ground (pin 3). |
| Pin 2 | Line 2 Anode / Cathode | Connects to second protected signal line (e.g., USB D−); forms second BiAs path to ground (pin 3). |
| Pin 3 | Ground Reference | Must be connected to system ground plane; provides common return for both ESD current paths in BiAs mode. |
Key Features
| Feature | Design Value |
|---|---|
| BiAs-MODE Protection | Asymmetric clamping (5.7 V reverse / 1.0 V forward) enables tighter voltage control on low-voltage data lines without forward conduction loss. |
| Low Capacitance at Bias | 260 pF at 1.6 V reverse bias - minimizes signal rise-time degradation in 3.3 V I²C and SMBus applications. |
| High Surge Robustness | 369 W peak pulse power (line-to-ground) - sustains repeated 30 A transients without parametric shift or failure. |
| AEC-Q101 Qualification | H3B-class human body model (>8 kV) and full temperature cycling - ensures reliability in automotive ECUs and ADAS sensors. |
| SOT-23 Footprint | Standardized 3-pin layout with 0.95 mm pitch - supports high-volume reflow assembly and PCB space optimization. |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+/D− signals against ESD events during hot-plug insertion in automotive head units. IC Role / Device Role / Timing Role: Primary bidirectional ESD clamp placed immediately before USB transceiver IC input pins. Use Value: Limits clamping voltage to ≤10 V at 30 A surge, preserving signal integrity while meeting ISO 10605 requirements. |
Use Scenario: Safeguarding HDMI Display Data Channel (DDC) lines (SCL/SDA) in digital signage controllers exposed to field ESD. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on 5 V-tolerant I²C bus operating at 100 kHz. Use Value: 420 pF capacitance at 0 V and 260 pF at 1.6 V prevents timing skew and maintains DDC communication reliability. |
| Automotive Infotainment I/O | Industrial HMI Touch Interface |
Use Scenario: Shielding CAN FD or LIN bus auxiliary I/O lines (e.g., button inputs, LED drivers) in vehicle dashboards. IC Role / Device Role / Timing Role: Secondary ESD guard on 3.3 V microcontroller GPIOs interfacing with external switches or sensors. Use Value: 3.3 V VRWM ensures no DC loading; ±30 kV rating exceeds ISO 10605 Class C requirements for interior modules. |
Use Scenario: Protecting resistive touch screen controller analog inputs (X+, X−, Y+, Y−) in factory HMIs subjected to operator ESD. IC Role / Device Role / Timing Role: Two-device implementation (one per axis pair) providing coordinated line-to-ground clamping. Use Value: BiAs-mode asymmetry reduces forward conduction loss during negative transients, maintaining ADC reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT03C-G3-18 | Direct successor in Vishay's VGSOTxxC family; identical SOT-23 package, same 3.3 V VRWM and ±30 kV ESD rating, but updated process for improved consistency and extended lifecycle beyond January 2025. | Drop-in replacement with no layout change; supports same BiAs/BiSy configurations and thermal profile. | Select for new designs requiring long-term supply continuity and enhanced manufacturing traceability. |
| TPD2E001DRSR | Texas Instruments device: dual-channel, 3.3 V VRWM, ±8 kV contact IEC 61000-4-2, 12 pF typical capacitance - significantly lower CD but lower ESD rating and no AEC-Q101 qualification. | Better suited for high-speed USB 2.0 where capacitance is critical; unsuitable for automotive due to missing AEC-Q101 and lower surge robustness. | Choose only for non-automotive, low-capacitance priority applications where ±8 kV ESD suffices. |
Compared with GSOT03C-HG3-18, VGSOT03C-G3-18 offers guaranteed post-2025 availability and identical electrical behavior, while TPD2E001DRSR trades ESD robustness and automotive qualification for ultra-low capacitance - making it viable only in consumer-grade, speed-sensitive designs.
Availability
GSOT03C-HG3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI interfaces, and USB 2.0 peripheral protection requiring stable component supply through its end-of-life date in January 2025.
Supply support for GSOT03C-HG3-18 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 series was developed specifically for compact, high-surge ESD protection in space-constrained automotive and industrial electronics, emphasizing AEC-Q101 compliance, asymmetrical clamping precision, and SOT-23 manufacturability.
FAQ
What is the maximum operating temperature range for GSOT03C-HG3-18?
The GSOT03C-HG3-18 has a junction temperature range of −55 °C to +150 °C and a storage temperature range of −55 °C to +150 °C. This wide thermal envelope supports deployment in under-hood automotive modules and industrial enclosures exposed to extreme ambient conditions, and is verified per AEC-Q101 stress testing protocols.
Does GSOT03C-HG3-18 support both BiAs and BiSy protection modes?
Yes, GSOT03C-HG3-18 supports both modes: BiAs-MODE (bidirectional asymmetrical) with pin 3 grounded for two-line protection, and BiSy-MODE (bidirectional symmetrical) with pin 3 unconnected and pins 1–2 across a single line. Electrical characteristics differ between modes - e.g., VRWM is 3.3 V in BiAs and 3.8 V in BiSy - and both are fully documented in the GSOT03C datasheet.
What is the clamping voltage of GSOT03C-HG3-18 at 30 A surge current?
In BiAs-MODE (pin 3 grounded), the reverse clamping voltage (VC) of GSOT03C-HG3-18 is 10 V typical and 12.3 V maximum at IPP = 30 A per line-to-ground path. This value ensures downstream 3.3 V ICs remain within absolute maximum ratings during IEC 61000-4-5 8/20 μs surge events.
Is GSOT03C-HG3-18 qualified to AEC-Q101 standards?
Yes, GSOT03C-HG3-18 is AEC-Q101 qualified, including H3B-class human body model ESD testing (>8 kV), temperature cycling, and high-temperature operating life. The "HG3" suffix denotes AEC-Q101 qualification and green RoHS-compliant packaging, confirmed in Vishay document 85824.
What is the capacitance of GSOT03C-HG3-18 at 1.6 V reverse bias?
At 1.6 V reverse bias and 1 MHz, the typical capacitance (CD) of GSOT03C-HG3-18 is 260 pF. This reduced capacitance versus its 0 V value (420 pF typ.) helps maintain signal edge integrity in 3.3 V I²C and SMBus applications where bus timing margins are tight.
GSOT03C-HG3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- 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:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT03C-HG3-18 FAQ
1.How can I place an order for GSOT03C-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT03C-HG3-18 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 GSOT03C-HG3-18 reliable?
The price and inventory of GSOT03C-HG3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT03C-HG3-18 is usually 5 days.
3.What payment methods are accepted for GSOT03C-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT03C-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT03C-HG3-18?
GSOT03C-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT03C-HG3-18 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 GSOT03C-HG3-18?
For technical support, including GSOT03C-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT03C-HG3-18 requirements.
6.How does Aetrix verify that GSOT03C-HG3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT03C-HG3-18 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 GSOT03C-HG3-18 meets industry standards.
7.What is the process for return or replacement of GSOT03C-HG3-18?
All GSOT03C-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT03C-HG3-18, 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 GSOT03C-HG3-18 part is unused and in its original packaging.
Return procedure for GSOT03C-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT03C-HG3-18 Tags
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