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Vishay General Semiconductor - Diodes Division GSOT04C-HE3-18
- Part No.:
- GSOT04C-HE3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT04C-HE3-18.pdf
- Description:
- TVS DIODE 4VWM 14.3VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,759
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Product details
Overview
GSOT04C-HE3-18 from Vishay Semiconductors is a bidirectional, asymmetrical ESD protection diode in SOT-23 package, designed for two-line data or signal line protection. It delivers ±30 kV IEC 61000-4-2 ESD immunity, 4 V reverse stand-off voltage (VRWM), 30 A peak pulse current (IPPM), and clamps transients to ≤14.3 V at 30 A in two-line BiAs mode - ideal for USB 2.0, HDMI, and industrial sensor interfaces.
For engineers reviewing the GSOT04C-HE3-18 datasheet, GSOT04C-HE3-18 pinout, GSOT04C-HE3-18 application, or GSOT04C-HE3-18 equivalent, this page provides verified electrical specs, BiAs/BiSy dual-mode operation details, SOT-23 terminal mapping, real-world use cases in automotive infotainment and industrial I/O, and validated alternative parts with functional trade-offs.
Technical Context
The GSOT04C-HE3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pins 1 and 2 connect to protected lines, pin 3 to ground, enabling independent clamping of positive/negative transients with distinct forward (≤4.5 V @ 30 A) and reverse (≤14.3 V @ 30 A) clamping voltages. Its internal dual-diode architecture supports parallel use for doubled surge handling.
In BiSy-MODE (single-line symmetrical), pin 3 is left unconnected, and pins 1–2 form a bipolar path with matched clamping (≤18.8 V @ 30 A) and 4.5 V VRWM - suitable for RS-485 or CAN bus stubs where polarity symmetry is required. Both modes operate across –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Immunity | ±30 kV contact/air discharge per IEC 61000-4-2 - meets Level 4 system-level ESD robustness for consumer and automotive electronics. |
| Reverse Stand-off Voltage (VRWM) | 4 V (BiAs mode, pin1–pin3/pin2–pin3) - ensures no leakage during normal 3.3 V logic operation while blocking transients above threshold. |
| Peak Pulse Current (IPPM) | 30 A per line (IEC 61000-4-5, 8/20 μs) - sustains high-energy surges without failure in industrial environments. |
| Clamping Voltage (VC) | ≤14.3 V @ 30 A (reverse, BiAs mode) - limits downstream IC stress below 16 V absolute max ratings of common microcontrollers and PHYs. |
| Capacitance (CD) | 310–450 pF @ 0 V, 1 MHz - optimized for <10 Mbps data lines (e.g., UART, I²C) but not recommended for >480 Mbps USB 2.0 full-speed signaling. |
| Operating Temperature | –55 °C to +150 °C - qualified for under-hood automotive and industrial control applications per AEC-Q101. |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-pin surface-mount, 2.8 mm × 2.35 mm footprint, MSL level 1, lead (Pb)-free e3 Sn plating, peak reflow ≤260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Line 1 Anode / Cathode | Connects to first protected signal line (L1); forms one half of dual-diode ESD path to ground (pin 3) in BiAs mode. |
| Pin 2 | Line 2 Anode / Cathode | Connects to second protected signal line (L2); symmetric dual-diode partner to pin 1 for two-line protection. |
| Pin 3 | Ground Reference | Must be connected to system ground in BiAs mode; left floating in BiSy mode to enable single-line symmetrical clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Two-line BiAs protection | Enables simultaneous protection of differential or independent signal pairs (e.g., D+/D−) with asymmetric clamping for optimal noise margin. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD stress - suitable for infotainment and body control modules. |
| Parallel diode configuration | Allows pins 1–3 and 2–3 to operate in parallel, doubling IPPM to 60 A and halving effective series impedance for lower clamping voltage. |
| e3 Sn termination | RoHS-compliant matte tin plating ensures solderability and intermetallic compatibility with standard Pb-free reflow profiles. |
| Low forward voltage | VF ≤1.2 V @ 1 A enables effective negative transient suppression near ground potential - critical for protecting CMOS inputs. |
Applications
| USB 2.0 Data Lines | HDMI TMDS Channels |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Two-line ESD clamp placed immediately before USB transceiver IC, referenced to chassis ground. Use Value: Maintains signal integrity with 450 pF capacitance while clamping ±30 kV discharges to ≤14.3 V - preventing latch-up or gate oxide damage in USB PHYs. |
Use Scenario: Shielding HDMI TMDS clock and data channels from ESD in set-top boxes and AV receivers. IC Role / Device Role / Timing Role: Discrete ESD suppressor on each TMDS pair (CLK+, CLK−, DATA0+, DATA0−), grounded via shortest possible trace. Use Value: 4 V VRWM aligns with HDMI 1.4 DC bias; 310 pF typical capacitance avoids signal rise-time degradation at 2.25 Gbps. |
| Automotive Sensor Interfaces | Industrial RS-485 Nodes |
Use Scenario: Safeguarding LIN or SENT bus lines in engine control units exposed to under-hood ESD and load dump coupling. IC Role / Device Role / Timing Role: BiAs-mode protector on bidirectional sensor data line, with pin 3 tied to vehicle chassis ground. Use Value: –55 °C to +150 °C operation and AEC-Q101 qualification ensure reliability across thermal cycles; 30 A IPPM handles coupled transients from solenoid switching. |
Use Scenario: Adding point-of-entry ESD protection to RS-485 transceiver terminals in factory automation PLCs. IC Role / Device Role / Timing Role: BiSy-mode configuration (pin 3 open) used on A/B differential pair to provide symmetrical clamping without polarity dependency. Use Value: 4.5 V VRWM matches RS-485 common-mode range; 155–225 pF capacitance preserves signal edge rate for 10 Mbps operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT04C | Direct replacement in VISHAY's new generation; identical SOT-23 package, same 4 V VRWM and ±30 kV ESD rating, but improved leakage (IR ≤10 μA vs. 20 μA) and tighter VBR (5.5–6.5 V vs. 5–7 V). | Drop-in compatible for new designs; requires validation only for ultra-low-leakage analog sensor front-ends where 20 μA IR may affect offset. | Select VGSOT04C for production builds post-January 2025; GSOT04C-HE3-18 remains viable for legacy BOMs until EOL. |
| TPD2E001DRYR | Texas Instruments part in same SOT-23-3 package; 5.5 V VRWM, 3.5 pF typical capacitance (vs. 310–450 pF), 4 kV HBM ESD rating (vs. AEC-Q101 qualified ±30 kV IEC). | Better suited for high-speed digital lines (e.g., USB 3.0, MIPI) due to ultra-low capacitance; lacks automotive qualification and IEC-level surge robustness. | Choose TPD2E001DRYR only when low-capacitance priority outweighs system-level ESD compliance; not recommended for automotive or industrial surge-prone environments. |
Compared with VGSOT04C, GSOT04C-HE3-18 offers proven field reliability and full AEC-Q101 documentation but higher leakage; versus TPD2E001DRYR, it trades speed for ruggedness - making GSOT04C-HE3-18 optimal for cost-sensitive, medium-speed, high-surge industrial and automotive applications.
Availability
GSOT04C-HE3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor bus hardening, and industrial RS-485 node safeguarding requiring stable component supply through its January 2025 end-of-life date.
Supply support for GSOT04C-HE3-18 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 power management, sensing, and circuit protection components with emphasis on reliability and automotive-grade qualification.
The GSOTxxC family was engineered specifically for board-level ESD and surge protection in space-constrained, high-reliability applications - targeting automotive infotainment, industrial I/O, and consumer connectivity interfaces.
FAQ
What is the maximum operating temperature for GSOT04C-HE3-18?
The GSOT04C-HE3-18 has a junction temperature range of –55 °C to +150 °C, fully compliant with AEC-Q101 for under-hood automotive use. This rating is confirmed in the Absolute Maximum Ratings table for GSOT04C on page 2 of Vishay document 85824, and applies directly to the GSOT04C-HE3-18 variant.
Does GSOT04C-HE3-18 support both BiAs and BiSy protection modes?
Yes, GSOT04C-HE3-18 supports both modes: BiAs-MODE (pins 1 & 2 to signal lines, pin 3 to ground) for two-line asymmetrical clamping, and BiSy-MODE (pin 3 open, pins 1–2 across a single line) for symmetrical bipolar protection. The dual-mode capability is explicitly described in sections 5 and 8 of Vishay document 85824.
What is the clamping voltage of GSOT04C-HE3-18 at 30 A surge current?
In BiAs-MODE (pin 1–3 or pin 2–3), the reverse clamping voltage (VC) of GSOT04C-HE3-18 is ≤14.3 V at IPP = 30 A, per the Electrical Characteristics table on page 6 of Vishay document 85824. Forward clamping at 30 A is ≤4.5 V.
Is GSOT04C-HE3-18 RoHS-compliant and lead-free?
Yes, GSOT04C-HE3-18 is RoHS-compliant and lead (Pb)-free, with e3 matte tin plating. This is confirmed in the Ordering Information table (page 1) and Package Data section (page 1) of Vishay document 85824, where "HE3" denotes green, lead-free, halogen-free packaging.
What is the capacitance of GSOT04C-HE3-18 at 0 V bias?
The typical capacitance of GSOT04C-HE3-18 is 310–450 pF measured at 0 V reverse bias and 1 MHz, as specified in the Electrical Characteristics table on page 6 of Vishay document 85824. This value applies to the pin 1–3 or pin 2–3 protection path in BiAs mode.
GSOT04C-HE3-18 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):
- 4V (Max)
- 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:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT04C-HE3-18 FAQ
1.How can I place an order for GSOT04C-HE3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT04C-HE3-18 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 GSOT04C-HE3-18 reliable?
The price and inventory of GSOT04C-HE3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT04C-HE3-18 is usually 5 days.
3.What payment methods are accepted for GSOT04C-HE3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT04C-HE3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT04C-HE3-18?
GSOT04C-HE3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT04C-HE3-18 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 GSOT04C-HE3-18?
For technical support, including GSOT04C-HE3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT04C-HE3-18 requirements.
6.How does Aetrix verify that GSOT04C-HE3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT04C-HE3-18 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 GSOT04C-HE3-18 meets industry standards.
7.What is the process for return or replacement of GSOT04C-HE3-18?
All GSOT04C-HE3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT04C-HE3-18, 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 GSOT04C-HE3-18 part is unused and in its original packaging.
Return procedure for GSOT04C-HE3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT04C-HE3-18 Tags
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