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Vishay General Semiconductor - Diodes Division VESD12A2-03GHG3-08
- Part No.:
- VESD12A2-03GHG3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
VESD12A2-03GHG3-08.pdf
- Description:
- TVS DIODE 12VWM 22.7VC SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,127
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Product details
Overview
VESD12A2-03GHG3-08 from Vishay Semiconductors is a dual-line unidirectional ESD-protection diode array in SOT-323, designed for I/O line protection in automotive and industrial interfaces operating up to 12 V DC. It delivers ±30 kV IEC 61000-4-2 contact/air discharge immunity, 4.4 A peak pulse current (8/20 μs), and 20.5–22.7 V reverse clamping voltage at rated stress.
For engineers reviewing the VESD12A2-03GHG3-08 datasheet, VESD12A2-03GHG3-08 pinout, VESD12A2-03GHG3-08 application, or VESD12A2-03GHG3-08 equivalent, this page provides verified electrical parameters, SOT-323 terminal mapping, real-world use cases in CAN/LIN bus and USB 2.0 ports, and two validated alternative parts with documented differences.
Technical Context
This device implements two independent unidirectional TVS diodes in a single SOT-323 package, each configured as a cathode-anode-cathode (CAK) structure with common cathode (pin 3). It operates within a -55 °C to +150 °C junction temperature range and meets AEC-Q101 qualification when ordered with 'H' suffix.
The VESD12A2-03GHG3-08 features 12 V reverse stand-off voltage (VRWM), 13.9–15.5 V breakdown (VBR at 1 mA), and low dynamic resistance (0.4 Ω typical) enabling fast transient response. Its 26–40 pF capacitance at 0 V bias supports high-speed data lines including 480 Mbps USB 2.0 without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Device Type | Dual unidirectional ESD protection diode array - protects two independent signal lines with separate anodes and shared cathode |
| Reverse Stand-off Voltage (VRWM) | 12 V - maximum continuous DC voltage the device blocks without conduction; sets upper limit for protected circuit operating voltage |
| Reverse Clamping Voltage (VC) | 20.5–22.7 V at 4.4 A (8/20 μs) - peak voltage seen by protected IC during ESD event; ensures downstream logic remains below absolute max ratings |
| Capacitance (CD) | 26–40 pF at 0 V, 1 MHz - low enough to avoid signal rise-time degradation on USB 2.0 or CAN FD buses |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for automotive infotainment and body control modules |
| Package | SOT-323 (D12 type code) - 2.2 mm × 1.35 mm footprint compatible with standard reflow profiles; MSL level 1, peak solder temp 260 °C |
| Operating Temperature | -55 °C to +150 °C - qualified for under-hood automotive environments and industrial motor drive control units |
Pinout & Package
SOT-323 package with three terminals: pin 1 (anode 1), pin 2 (anode 2), pin 3 (common cathode). Mold compound UL 94 V-0 rated; lead finish Sn (e3); weight 5.2 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connected to first protected signal line (e.g., CAN_H); conducts transient current to common cathode during overvoltage |
| Pin 2 | Anode of Channel 2 | Connected to second protected signal line (e.g., CAN_L); independent path with identical clamping behavior as Pin 1 |
| Pin 3 | Common Cathode | Connected to system ground or low-impedance return path; carries combined surge current from both channels |
Key Features
| Feature | Design Value |
|---|---|
| Compact SOT-323 footprint | Enables dual-line ESD protection in < 3 mm² PCB area - critical for space-constrained automotive sensor modules and portable medical devices |
| Unidirectional dual-channel architecture | Supports DC-biased interfaces like LIN bus or RS-485 where only positive transients require suppression; avoids forward conduction during normal operation |
| AEC-Q101 qualification option | Available with 'H' suffix (as in VESD12A2-03GHG3-08) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Low dynamic resistance (0.4 Ω) | Minimizes clamping voltage overshoot during sub-nanosecond ESD events - improves protection margin for 3.3 V or 5 V microcontrollers |
| 12 V VRWM with 15.5 V VBR | Provides 3.5 V design margin between working voltage and breakdown - prevents leakage-induced power loss while ensuring reliable turn-on during transients |
Applications
| Automotive CAN Bus Interface | Industrial USB 2.0 Port |
|---|---|
|
Use Scenario: Protecting CAN_H and CAN_L lines in body control modules exposed to ISO 10605 and IEC 61000-4-2 ESD events during assembly or service. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly at connector entry point, before CAN transceiver input pins. Use Value: Limits clamped voltage to ≤22.7 V during 4.4 A surge, keeping transceiver inputs within safe operating area while maintaining <40 pF loading for 1 Mbps CAN signaling. |
Use Scenario: Safeguarding D+ and D- lines of embedded USB 2.0 host ports in factory automation HMIs against user-handling ESD. IC Role / Device Role / Timing Role: Dual-channel ESD clamp mounted adjacent to USB receptacle, with common cathode tied to clean digital ground plane. Use Value: 26–40 pF capacitance preserves USB 2.0 eye diagram integrity at 480 Mbps; ±30 kV immunity exceeds IEC 61000-4-2 Level 4 requirement. |
| Automotive LIN Bus Node | Smart Sensor Signal Conditioning |
|
Use Scenario: ESD protection for LIN transceiver I/O in door module ECUs subjected to repeated static discharge during vehicle assembly. IC Role / Device Role / Timing Role: Unidirectional diode array connected between LIN bus line and transceiver, referenced to local ground with minimal trace inductance. Use Value: 12 V VRWM matches typical LIN bus operating voltage; 0.4 Ω rdyn ensures fast response to 15 kV contact discharge without latch-up risk. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA or 0–10 V) of pressure/temperature sensors in harsh industrial environments. IC Role / Device Role / Timing Role: Dual-channel protector placed at sensor PCB edge, with channel 1 on signal line and channel 2 on return path, common cathode grounded. Use Value: Low leakage (<0.1 μA at 12 V) prevents measurement offset; ±30 kV rating guards against maintenance personnel ESD during field calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J12A-Q | Single-channel SMA package; 12 V VRWM; higher VC (23.2 V min); 600 W PPP vs. 100 W | Requires two devices for dual-line protection; larger footprint; higher clamping voltage reduces safety margin for 3.3 V ICs | Use when discrete layout flexibility is preferred over integrated dual-channel compactness; verify thermal derating for repeated surges |
| TPD2E001DRYR | Two-channel unidirectional; 5 V VRWM; lower VC (12 V typ); 12 pF capacitance; 0.85 mm × 0.65 mm DRY package | Not suitable for 12 V systems; optimized for USB 2.0/3.3 V logic; smaller size but lower voltage rating | Select only for 3.3 V or 5 V interfaces requiring ultra-low capacitance; not a functional replacement for 12 V-rated protection |
Compared with SMA6J12A-Q and TPD2E001DRYR, the VESD12A2-03GHG3-08 uniquely combines 12 V stand-off, dual-channel integration in SOT-323, and automotive-qualified reliability-enabling single-device protection of CAN/LIN buses without sacrificing board space or voltage margin.
Availability
VESD12A2-03GHG3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial USB host ports, and smart sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for VESD12A2-03GHG3-08 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in high-reliability protection devices and automotive-qualified solutions.
The VESDxxA2-03G series was developed specifically for compact, high-immunity ESD protection in automotive communication buses (CAN, LIN) and industrial data interfaces where space, voltage rating, and AEC-Q101 compliance are critical.
FAQ
What is the maximum continuous operating voltage supported by the VESD12A2-03GHG3-08?
The VESD12A2-03GHG3-08 has a reverse stand-off voltage (VRWM) of 12 V, meaning it reliably blocks voltages up to 12 V DC in normal operation without significant leakage. This makes it suitable for protecting 12 V automotive signal lines such as CAN or LIN, where system voltage may reach 13.5 V during charging but nominal operation stays within the 12 V rating.
Does the VESD12A2-03GHG3-08 meet AEC-Q101 qualification?
Yes - the 'H' in VESD12A2-03GHG3-08 indicates AEC-Q101 qualification. This version undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD robustness validation per automotive standards, making it appropriate for under-hood and body electronics applications requiring certified reliability.
How does the VESD12A2-03GHG3-08 compare to bidirectional ESD diodes for CAN bus protection?
The VESD12A2-03GHG3-08 is unidirectional and optimized for DC-biased interfaces like CAN, where only positive transients threaten the transceiver. Unlike bidirectional diodes, it avoids leakage during negative signal swings and provides tighter clamping (20.5–22.7 V) at its rated 4.4 A pulse - improving protection margin for 12 V systems.
What is the typical capacitance of the VESD12A2-03GHG3-08 and how does it affect high-speed signals?
The VESD12A2-03GHG3-08 exhibits 26–40 pF capacitance at 0 V bias and 1 MHz. This low value ensures minimal impact on signal integrity for protocols up to 480 Mbps (USB 2.0) and 1 Mbps (CAN), preserving rise/fall times and reducing jitter - confirmed in Vishay's application curves for differential line protection.
Can the VESD12A2-03GHG3-08 be used in place of the VESD05A2-03GHG3-08?
No - the VESD12A2-03GHG3-08 and VESD05A2-03GHG3-08 have different reverse stand-off voltages (12 V vs. 5 V) and clamping behaviors. Substituting the 12 V part in a 5 V system risks insufficient turn-on during ESD events, while using the 5 V part in a 12 V system causes excessive leakage. Always match VRWM to the protected line's operating voltage.
VESD12A2-03GHG3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V (Max)
- Voltage - Breakdown (Min):
- 13.9V
- Voltage - Clamping (Max) @ Ipp:
- 22.7V
- Current - Peak Pulse (10/1000µs):
- 4.4A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 33pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
VESD12A2-03GHG3-08 FAQ
1.How can I place an order for VESD12A2-03GHG3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VESD12A2-03GHG3-08 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 VESD12A2-03GHG3-08 reliable?
The price and inventory of VESD12A2-03GHG3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VESD12A2-03GHG3-08 is usually 5 days.
3.What payment methods are accepted for VESD12A2-03GHG3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VESD12A2-03GHG3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VESD12A2-03GHG3-08?
VESD12A2-03GHG3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VESD12A2-03GHG3-08 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 VESD12A2-03GHG3-08?
For technical support, including VESD12A2-03GHG3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VESD12A2-03GHG3-08 requirements.
6.How does Aetrix verify that VESD12A2-03GHG3-08 is sourced from the original manufacturer or authorized distributors?
All VESD12A2-03GHG3-08 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 VESD12A2-03GHG3-08 meets industry standards.
7.What is the process for return or replacement of VESD12A2-03GHG3-08?
All VESD12A2-03GHG3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VESD12A2-03GHG3-08, 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 VESD12A2-03GHG3-08 part is unused and in its original packaging.
Return procedure for VESD12A2-03GHG3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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