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Vishay General Semiconductor - Diodes Division GSOT12-E3-08
- Part No.:
- GSOT12-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
GSOT12-E3-08.pdf
- Description:
- TVS DIODE 12VWM 26VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,411
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Product details
Overview
GSOT12-E3-08 from Vishay Semiconductors is a single-line bidirectional asymmetrical ESD protection diode in SOT-23 package, rated for 12 V reverse stand-off voltage (VRWM), 12 A peak pulse current (IPPM), and ±30 kV IEC 61000-4-2 ESD immunity. It delivers 21.2 V clamping voltage at 12 A and 115–150 pF capacitance at 0 V bias, targeting high-speed data lines in automotive infotainment interfaces.
For engineers reviewing the GSOT12-E3-08 datasheet, GSOT12-E3-08 pinout, GSOT12-E3-08 application, or GSOT12-E3-08 equivalent, key selection criteria include VRWM matching to signal rail voltage, clamping voltage margin relative to IC absolute maximum ratings, low capacitance for USB 2.0 or CAN FD signal integrity, and AEC-Q101 qualification for automotive deployment.
Technical Context
The GSOT12-E3-08 implements BiAs-MODE (Bidirectional Asymmetrical) protection: reverse breakdown occurs at 13.5–16.5 V (VBR), clamping positive transients to ground via avalanche conduction, while negative transients are clamped near 0 V by forward conduction with VF ≤ 1.2 V at 1 A. Its SOT-23 footprint enables compact placement directly at connector entry points.
Designed for transient suppression per IEC 61000-4-5 (8/20 μs waveform), it sustains 312 W peak pulse power and exhibits <1 μA leakage at 12 V (IR), ensuring minimal impact on 12 V supply-rail monitoring or LIN bus signaling. Thermal performance supports operation from −40 °C to +125 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - matches nominal 12 V automotive supply rails and LIN/CAN physical layer operating voltages |
| VBR | 13.5–16.5 V - ensures reliable triggering above normal operating voltage while avoiding false trips |
| VC @ IPPM | 21.2–26 V - clamps transients below typical 30 V absolute max rating of automotive transceivers |
| Capacitance | 115–150 pF @ 0 V - suitable for ≤10 Mbps CAN FD or LIN, not recommended for USB 3.0 or HDMI |
| ESD Rating | ±30 kV contact/air - exceeds IEC 61000-4-2 Level 4 for robust front-panel port protection |
| Package | SOT-23 - industry-standard 3-pin footprint compatible with automated assembly and reflow profiles up to 260 °C |
| AEC-Q101 | Qualified - validated for automotive under-hood and cabin applications per stress test requirements |
Pinout & Package
SOT-23 package: 3-pin surface-mount device with gull-wing leads, 2.8–3.1 mm length, 1.15–1.20 mm width, 0.9–1.0 mm height, MSL level 1, lead-free (e3 Sn plating).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground reference | Connected directly to system chassis or PCB ground plane; serves as return path for both positive and negative transient currents |
| Pin 2 | No connection (NC) | Internally unconnected; must remain floating-no trace routing or soldering allowed |
| Pin 3 | Protected line input | Connected to signal/data line requiring ESD protection (e.g., LIN bus wire, CAN_H, or sensor analog output) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional asymmetrical clamping | Clamps positive transients to 21.2–26 V and negative transients to ≤2.2 V at 12 A, minimizing stress on downstream receivers |
| Low leakage current | <1 μA at 12 V VR enables use on always-on automotive circuits without battery drain concerns |
| High ESD immunity | ±30 kV contact/air per IEC 61000-4-2 ensures reliability in manufacturing handling and end-user environments |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical shock-supports Tier-1 OEM BOM inclusion |
| SOT-23 footprint | Enables placement within 5 mm of I/O connector for optimal high-frequency transient capture before entering IC pins |
Applications
| Automotive LIN Bus Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN transceiver pins against ESD events during vehicle assembly, service, or user interaction with door modules or climate controls. IC Role / Device Role / Timing Role: Standalone ESD suppressor placed between LIN connector and transceiver input, operating in passive clamping mode with no timing or signal conditioning function. Use Value: Prevents latch-up or permanent damage to LIN transceivers rated for ≤36 V absolute max, leveraging 21.2 V clamping at 12 A to stay within safe margin. | Use Scenario: Shielding analog output lines from pressure or temperature sensors in factory automation PLC I/O modules exposed to operator touch or cable handling. IC Role / Device Role / Timing Role: Single-point transient shunt on 0–10 V or 4–20 mA signal paths, with no effect on DC accuracy or bandwidth due to <1 μA leakage and 150 pF capacitance. Use Value: Maintains signal fidelity while meeting IEC 61000-4-2 Level 4 compliance for industrial equipment certification. |
| Automotive Body Control Module | Consumer Appliance Keypad Interface |
Use Scenario: Safeguarding microcontroller GPIO pins connected to external switches, LEDs, or relays in BCMs subjected to repeated ESD exposure in humid garage environments. IC Role / Device Role / Timing Role: Low-capacitance clamp on discrete control lines, functioning as a fail-safe barrier independent of MCU firmware or clock domains. Use Value: Enables direct GPIO protection without RC filtering delay, preserving real-time response for safety-critical functions like hazard light activation. | Use Scenario: ESD hardening of membrane keypad traces in washing machines or ovens where users frequently touch control panels near high-voltage motor drivers. IC Role / Device Role / Timing Role: Passive overvoltage limiter on low-speed digital scan lines, with no active logic or power supply required. Use Value: Eliminates field failures from user-induced discharges while supporting cost-sensitive SMT assembly via standard SOT-23 pick-and-place. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VGSOT12 | Successor series with identical VRWM (12 V), VBR (13.5–16.5 V), and SOT-23 package; improved thermal resistance and tighter VC distribution (20.5–25.5 V @ 12 A) | Same PCB layout; supports higher ambient temperatures in engine bay deployments due to enhanced power derating | Select VGSOT12 for new designs targeting extended lifecycle beyond January 2025 EOL date of GSOT12-E3-08 |
| SMF12A | Unidirectional TVS diode with 12 V VRWM but no forward clamping capability; higher IPPM (20 A) but asymmetric protection only (positive transients only) | Requires external series resistor or dual-diode configuration for bidirectional coverage; unsuitable for LIN or other bidirectional buses | Choose SMF12A only for unidirectional power rail protection where negative transients are absent or handled separately |
Compared with GSOT12-E3-08, VGSOT12 offers direct drop-in replacement with enhanced thermal robustness for long-term automotive programs, while SMF12A provides higher surge current capacity but lacks the bidirectional asymmetrical clamping essential for data line protection.
Availability
GSOT12-E3-08 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance control panels requiring stable component supply through its End-of-Life date in January 2025.
Supply support for GSOT12-E3-08 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, and protection devices for automotive, industrial, and computing markets.
The GSOTxx family was engineered specifically for board-level ESD protection of automotive serial buses (LIN, CAN) and industrial analog/digital I/O, emphasizing AEC-Q101 qualification, low capacitance, and precise clamping behavior.
FAQ
What is the maximum operating temperature range for GSOT12-E3-08?
The GSOT12-E3-08 supports a junction temperature range of −40 °C to +125 °C, fully compliant with AEC-Q101 automotive requirements. This allows deployment in under-hood modules, instrument clusters, and industrial controllers exposed to wide ambient extremes. The SOT-23 package's MSL level 1 rating ensures compatibility with standard reflow profiles peaking at 260 °C.
Does GSOT12-E3-08 support bidirectional signal lines like LIN or CAN?
Yes, GSOT12-E3-08 uses BiAs-MODE (Bidirectional Asymmetrical) protection, clamping positive transients to 21.2–26 V and negative transients to ≤2.2 V at full 12 A pulse. This makes it suitable for LIN bus lines and CAN_H/CAN_L differential pairs when used per-line, unlike unidirectional TVS diodes that require dual configurations for full protection.
What is the clamping voltage of GSOT12-E3-08 at 1 A and 12 A peak current?
At 1 A peak pulse current, GSOT12-E3-08 clamps to 15.4–18.7 V (reverse) and ≤1.2 V (forward). At its rated 12 A peak pulse current (IPPM), the reverse clamping voltage is 21.2–26 V. These values are measured per IEC 61000-4-5 (8/20 μs waveform) and ensure safe operation below the 30 V absolute maximum rating of most automotive transceivers.
Is GSOT12-E3-08 RoHS-compliant and lead-free?
Yes, GSOT12-E3-08 carries the "E3" suffix indicating e3 matte tin (Sn) plating, fully compliant with RoHS Directive 2011/65/EU and lead-free reflow requirements. The device meets JEDEC J-STD-020 moisture sensitivity level 1 and supports peak reflow temperatures up to 260 °C, aligning with standard Pb-free assembly processes.
What is the capacitance of GSOT12-E3-08 and how does it affect high-speed signals?
GSOT12-E3-08 exhibits 115–150 pF capacitance at 0 V bias and 50 pF at 6 V reverse bias (1 MHz). This limits usable bandwidth to ≤10 Mbps, making it appropriate for LIN (20 kbps), CAN 2.0 (1 Mbps), and CAN FD (5 Mbps) but unsuitable for USB 2.0 (480 Mbps) or HDMI, where sub-2 pF devices are required to avoid signal integrity degradation.
GSOT12-E3-08 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:
- 1
- 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:
- General Purpose
- Capacitance @ Frequency:
- 115pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
GSOT12-E3-08 FAQ
1.How can I place an order for GSOT12-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for GSOT12-E3-08 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 GSOT12-E3-08 reliable?
The price and inventory of GSOT12-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GSOT12-E3-08 is usually 5 days.
3.What payment methods are accepted for GSOT12-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GSOT12-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GSOT12-E3-08?
GSOT12-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GSOT12-E3-08 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 GSOT12-E3-08?
For technical support, including GSOT12-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GSOT12-E3-08 requirements.
6.How does Aetrix verify that GSOT12-E3-08 is sourced from the original manufacturer or authorized distributors?
All GSOT12-E3-08 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 GSOT12-E3-08 meets industry standards.
7.What is the process for return or replacement of GSOT12-E3-08?
All GSOT12-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with GSOT12-E3-08, 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 GSOT12-E3-08 part is unused and in its original packaging.
Return procedure for GSOT12-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
GSOT12-E3-08 Tags
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