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Vishay General Semiconductor - Diodes Division GSOT12C-HG3-18
- Part No.:
- GSOT12C-HG3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT12C-HG3-18.pdf
- Description:
- TVS DIODE 12VWM 26VC SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
GSOT12C-HG3-18 from Vishay Semiconductors is a two-line bidirectional asymmetrical ESD protection diode in SOT-23 package, rated for 12 V reverse stand-off voltage (VRWM), ±30 kV IEC 61000-4-2 ESD immunity, and 12 A peak pulse current (IPPM). It protects high-speed data lines such as USB 2.0, HDMI, or industrial serial interfaces against transient overvoltage.
For engineers reviewing the GSOT12C-HG3-18 datasheet, GSOT12C-HG3-18 pinout, GSOT12C-HG3-18 application, or GSOT12C-HG3-18 equivalent, key selection criteria include clamping voltage at 12 A (21.2–26 V), low 115–150 pF capacitance at 0 V bias, 1 μA leakage at 12 V, BiAs-mode dual-line operation, and AEC-Q101 qualification status.
Technical Context
The GSOT12C-HG3-18 implements BiAs-MODE (Bidirectional Asymmetrical) protection: pins 1 and 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 conduction). Its asymmetry yields lower forward clamping (~2.2 V at 12 A) versus reverse clamping (~21.2–26 V).
It also supports BiSy-MODE (single-line symmetrical operation) with pin 3 unconnected-pins 1 and 2 forming a bipolar path-delivering matched ±23.4–28.1 V clamping at 12 A and 58–75 pF capacitance, suitable for balanced analog or legacy bus lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-off Voltage (VRWM) | 12 V - maximum continuous operating voltage before clamping begins on data lines |
| Peak Pulse Current (IPPM) | 12 A (8/20 μs waveform) - surge handling capacity per protection path in BiAs mode |
| Reverse Clamping Voltage (VC) | 21.2–26 V at 12 A - maximum voltage seen by protected IC during worst-case ESD event |
| Capacitance (CD) | 115–150 pF at 0 V, 50 pF at 6 V - ensures minimal signal integrity impact on 10–50 MHz digital interfaces |
| Leakage Current (IR) | ≤1 μA at 12 V - negligible DC loading on battery-powered or high-impedance sensor nodes |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - exceeds Level 4 system-level ESD requirements |
| Operating Temperature | −55 °C to +150 °C - supports under-hood automotive, industrial control, and outdoor equipment use |
Pinout & Package
SOT-23 package (JEDEC TO-236AB), 3-terminal surface-mount device with standard footprint: 2.8–3.1 mm length, 1.15–1.20 mm width, 0.9–1.0 mm height, 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 (BiAs) / Bidirectional Terminal A (BiSy) | Connects to first protected signal line (e.g., USB D+); in BiSy mode, forms symmetrical clamp path with Pin 2 |
| Pin 2 | Line 2 Anode (BiAs) / Bidirectional Terminal B (BiSy) | Connects to second protected signal line (e.g., USB D−); in BiSy mode, pairs with Pin 1 for single-line protection |
| Pin 3 | Cathode / Ground Reference | Mandatory ground connection in BiAs mode; must be left floating in BiSy mode to enable symmetrical operation |
Key Features
| Feature | Design Value |
|---|---|
| Two-line BiAs protection | Simultaneous protection of differential or adjacent signal pairs without cross-talk coupling |
| AEC-Q101 qualified | Validated for automotive electronics including infotainment, body control, and ADAS sensor interfaces |
| Low clamping in forward direction | 2.2 V max at 12 A enables robust protection of low-voltage logic (e.g., 1.8 V/3.3 V I/O) during negative transients |
| Green packaging | C4G environmental code confirms halogen-free molding compound and RoHS-compliant finish |
| High surge power rating | 312 W (pin 1–3/2–3) and 337 W (pin 1–2) support repeated ESD events in harsh environments |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion in industrial docking stations. IC Role / Device Role / Timing Role: Two-line asymmetrical transient voltage suppressor placed directly at connector, before USB transceiver IC. Use Value: 12 V VRWM matches USB 2.0 common-mode range; 115–150 pF capacitance avoids signal rise-time degradation up to 480 Mbps. |
Use Scenario: Safeguarding TMDS data channels in HDMI 1.4 receivers used in automotive display modules exposed to user-handling ESD. IC Role / Device Role / Timing Role: Dual-channel ESD clamp mounted at HDMI receptacle, shunting transients to chassis ground. Use Value: ±30 kV ESD rating meets IEC 61000-4-2 Level 4; 21.2–26 V clamping prevents damage to 3.3 V HDMI PHY inputs. |
| Automotive CAN FD Transceiver Protection | Industrial RS-485 Node Protection |
Use Scenario: Adding secondary ESD protection to CAN FD physical layer (PHY) in engine control units where primary protection resides on PCB edge. IC Role / Device Role / Timing Role: Secondary BiAs-mode clamp on CANH/CANL lines, referenced to vehicle ground plane. Use Value: −55 °C to +150 °C operation sustains under-hood thermal cycling; 1 μA leakage preserves bus bias stability. |
Use Scenario: Hardening RS-485 transceivers in factory automation gateways against ESD from maintenance personnel touching field wiring terminals. IC Role / Device Role / Timing Role: Dual-line TVS array placed at terminal block entry point, before isolated RS-485 driver/receiver. Use Value: 12 V VRWM aligns with RS-485 common-mode range (−7 V to +12 V); 58–75 pF capacitance in BiSy mode avoids data rate limitation at 20 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT12C-HG3-18 | Successor series with identical VRWM (12 V), same SOT-23 package, improved surge lifetime per AEC-Q101 rev G, end-of-life notice issued for GSOT12C family. | Drop-in replacement with identical pinout and electrical specs; validated for new designs requiring extended product longevity. | Select for new designs requiring long-term supply continuity beyond January 2025. |
| SMF12CTHE3_A/H | Single-line 12 V TVS (SOD-123), 14.5 V VBR min, 23.2 V VC @ 12 A, 100 pF, no BiAs/BiSy flexibility. | Limited to single-line protection; requires two devices for differential pair, increasing board area and cost. | Use only when BiAs functionality is unnecessary and space allows dual-device layout. |
Compared with GSOT12C-HG3-18, VGSOT12C-HG3-18 offers guaranteed supply continuity and updated qualification, while SMF12CTHE3_A/H sacrifices dual-line integration and design simplicity for marginally lower capacitance in single-line configurations.
Availability
GSOT12C-HG3-18 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI data lane hardening, and automotive CAN FD transceiver safeguarding requiring stable component supply through its end-of-life date in January 2025.
Supply support for GSOT12C-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 family was engineered specifically for compact, high-performance ESD protection of high-speed data interfaces in space-constrained and thermally demanding applications.
FAQ
What is the maximum operating temperature for GSOT12C-HG3-18?
The GSOT12C-HG3-18 has a junction temperature range of −55 °C to +150 °C, making it suitable for under-hood automotive environments, industrial motor drives, and outdoor telecom equipment where thermal extremes occur. This rating is verified per AEC-Q101 stress testing protocols and applies across its full electrical specification range.
Can GSOT12C-HG3-18 protect both differential and single-ended signals?
Yes - GSOT12C-HG3-18 supports two distinct modes: BiAs-MODE (pins 1 & 2 to signal lines, pin 3 to ground) for differential or adjacent line protection, and BiSy-MODE (pin 3 unconnected, pins 1 & 2 forming a bipolar path) for single-ended or balanced bus lines like RS-485. Each mode delivers specified clamping and capacitance values per the datasheet.
What does the "HG3-18" suffix indicate in GSOT12C-HG3-18?
The "HG3-18" suffix denotes: H = AEC-Q101 qualified, G = green (halogen-free) material, 3 = tape-and-reel packaging (8 mm carrier tape), and 18 = date code for week 18 of the manufacturing year. This full ordering code ensures traceability, compliance, and correct reel orientation for automated assembly.
Is GSOT12C-HG3-18 compatible with lead-free reflow soldering?
Yes - GSOT12C-HG3-18 uses e3 matte tin plating and is qualified for peak reflow temperatures up to 260 °C per J-STD-020, meeting IPC/JEDEC standards for lead-free assembly. Its MSL level 1 rating means unlimited floor life at ≤30 °C/60% RH, eliminating bake requirements prior to soldering.
How does GSOT12C-HG3-18 compare to GSOT05C-HG3-18 in terms of clamping performance?
GSOT12C-HG3-18 provides higher VRWM (12 V vs. 5 V) and lower capacitance (115–150 pF vs. 260–350 pF), making it better suited for 12 V-tolerant interfaces like RS-485 or automotive LIN, while GSOT05C-HG3-18 targets 3.3 V/5 V logic. At 12 A IPPM, GSOT12C-HG3-18 clamps at 21.2–26 V versus GSOT05C-HG3-18's 12–16 V at 30 A - reflecting trade-offs between voltage rating and surge capability.
GSOT12C-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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 312W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 115pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT12C-HG3-18 FAQ
1.How can I place an order for GSOT12C-HG3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT12C-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 GSOT12C-HG3-18 reliable?
The price and inventory of GSOT12C-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 GSOT12C-HG3-18 is usually 5 days.
3.What payment methods are accepted for GSOT12C-HG3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT12C-HG3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT12C-HG3-18?
GSOT12C-HG3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT12C-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 GSOT12C-HG3-18?
For technical support, including GSOT12C-HG3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT12C-HG3-18 requirements.
6.How does Aetrix verify that GSOT12C-HG3-18 is sourced from the original manufacturer or authorized distributors?
All GSOT12C-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 GSOT12C-HG3-18 meets industry standards.
7.What is the process for return or replacement of GSOT12C-HG3-18?
All GSOT12C-HG3-18 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT12C-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 GSOT12C-HG3-18 part is unused and in its original packaging.
Return procedure for GSOT12C-HG3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT12C-HG3-18 Tags
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