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Vishay General Semiconductor - Diodes Division SMCG11AHE3/9AT
- Part No.:
- SMCG11AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG11AHE3/9AT.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,232
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Product details
Overview
SMCG11AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, featuring a 12.2 V minimum breakdown voltage (VBR), 11 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 82.4 A peak pulse current (IPPM), and 18.2 V maximum clamping voltage (VC). It is AEC-Q101 qualified and designed for automotive-grade overvoltage protection on power rails and signal lines.
For engineers reviewing the SMCG11AHE3/9AT datasheet, SMCG11AHE3/9AT pinout, SMCG11AHE3/9AT application, or SMCG11AHE3/9AT equivalent, this device is selected for robust ESD and surge immunity in harsh environments-especially where automotive compliance, low clamping ratio, and high surge current capability are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while its low incremental surge resistance enables effective energy diversion during transients such as ISO 7637-2 load dump or IEC 61000-4-5 surges.
The SMCG11AHE3/9AT is rated for continuous operation up to +150 °C junction temperature and exhibits 75 °C/W typical thermal resistance (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 12.2 V - Ensures reliable triggering above normal 11 V system operating rail without false clamping |
| VWM | 11 V - Matches nominal 12 V automotive supply with 10 % margin before conduction |
| VC @ IPPM | 18.2 V - Limits downstream voltage stress to safe levels during 82.4 A transient events |
| PPPM | 1500 W - Handles high-energy transients per 10/1000 µs waveform without failure |
| IPPM | 82.4 A - Supports robust protection against ISO 16750-2 pulse 5a/b and similar surge profiles |
| TJ max | +150 °C - Enables under-hood deployment in automotive engine control units and body modules |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with matte tin-plated terminals; 0.31" × 0.31" (8.0 mm × 8.0 mm) recommended copper pad layout per terminal; RoHS-compliant and halogen-free (HE3 suffix); MSL Level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; forms clamping loop with cathode |
| Cathode | Protected line input | Connected to protected circuit node (e.g., 12 V rail or CAN-H); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage performance across life cycle and temperature extremes |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage overshoot during surge events, reducing risk to downstream MOSFETs and ICs |
| MSL Level 1 rating | Enables standard reflow assembly without moisture sensitivity concerns or baking requirements |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for automotive interior and under-hood applications |
Applications
| Automotive Power Rail Protection | CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and jump-start transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and local regulator input. Use Value: Clamps 18.2 V at 82.4 A, limiting stress on downstream DC/DC converters and microcontrollers during 100 V/400 ms load dump events. |
Use Scenario: Safeguarding CAN-H and CAN-L lines in vehicle networking against ESD and coupled surges. IC Role / Device Role / Timing Role: Discrete TVS pair (one per line) providing bidirectional or unidirectional clamping referenced to common ground. Use Value: Low capacitance and sub-ns response preserve CAN signal integrity while suppressing ±30 kV contact ESD per IEC 61000-4-2. |
| Industrial Sensor Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) in factory automation systems from inductive switching noise. IC Role / Device Role / Timing Role: Point-of-entry TVS on 24 V supply line feeding isolated signal conditioning circuitry. Use Value: 1500 W peak power rating absorbs repetitive transients from solenoid drivers without degradation over 100,000+ cycles. |
Use Scenario: Overvoltage suppression at AC/DC adapter primary-side rectifier output or secondary-side 5–12 V rail. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed after bulk capacitor to protect downstream regulators and USB controllers. Use Value: 11 V VWM allows compatibility with 12 V nominal outputs while clamping to 18.2 V-well below typical IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/57T | Same VWM (11 V) and VC (18.2 V), but lower PPPM (400 W) and IPPM (22.5 A); SMA (DO-214AC) package | Limited to lower-energy transients; unsuitable for ISO 16750-2 load dump | Select SMCG11AHE3/9AT when >1 kW surge handling or AEC-Q101 compliance is required. |
| 1.5KE11A | Higher PPPM (1500 W), but through-hole DO-201 package; no AEC-Q101 qualification; higher VC (19.5 V) | Not suitable for automated SMT production or automotive under-hood use due to package and qualification | Choose SMCG11AHE3/9AT for surface-mount, high-reliability automotive designs requiring validated qualification. |
Compared with SMAJ11A-E3/57T and 1.5KE11A, the SMCG11AHE3/9AT delivers identical clamping performance at higher surge capacity, supports automated placement, and provides certified automotive reliability-making it the preferred choice for next-generation vehicle electronics and industrial controls where board space, manufacturability, and qualification are critical.
Availability
SMCG11AHE3/9AT is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply, AEC-Q101 validation, and high-surge transient immunity.
Supply support for SMCG11AHE3/9AT 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, high-reliability transient suppression in automotive, industrial, and telecom infrastructure-where consistent clamping, low leakage, and qualification rigor are mandatory.
FAQ
What is the breakdown voltage range for SMCG11AHE3/9AT?
The SMCG11AHE3/9AT has a minimum breakdown voltage (VBR) of 12.2 V and a maximum of 13.5 V at 1.0 mA test current, per the Vishay datasheet revision 09-Jan-2024. This tight VBR window ensures predictable clamping onset across production lots and temperature ranges, critical for protecting 12 V systems without premature conduction.
Is SMCG11AHE3/9AT suitable for automotive applications?
Yes, SMCG11AHE3/9AT is AEC-Q101 qualified and explicitly listed in Vishay's automotive-grade product documentation. Its construction-including glass-passivated junction, MSL Level 1 rating, and UL 94 V-0 molding-meets requirements for engine control, body electronics, and infotainment systems deployed in vehicles.
What does the "HE3" suffix indicate in SMCG11AHE3/9AT?
The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads. It distinguishes SMCG11AHE3/9AT from industrial-grade variants (e.g., "E3") and halogen-free versions (e.g., "HM3"), confirming full automotive qualification and environmental compliance per Vishay's mechanical data table.
What is the maximum clamping voltage of SMCG11AHE3/9AT at rated surge current?
The SMCG11AHE3/9AT clamps to a maximum of 18.2 V at its rated peak pulse current (IPPM) of 82.4 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and verified on the minimum recommended 8.0 mm × 8.0 mm copper pad layout, ensuring design-relevant performance.
Does SMCG11AHE3/9AT have polarity marking, and how is it oriented?
Yes, SMCG11AHE3/9AT is unidirectional and features a visible cathode band on the package body. Per Vishay's mechanical drawing and datasheet, the banded end is the cathode and must be connected toward the protected line (e.g., 12 V rail), while the anode connects to ground or return path-reversal prevents proper clamping operation.
SMCG11AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG11AHE3/9AT FAQ
1.How can I place an order for SMCG11AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG11AHE3/9AT 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 SMCG11AHE3/9AT reliable?
The price and inventory of SMCG11AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG11AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG11AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG11AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG11AHE3/9AT?
SMCG11AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG11AHE3/9AT 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 SMCG11AHE3/9AT?
For technical support, including SMCG11AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG11AHE3/9AT requirements.
6.How does Aetrix verify that SMCG11AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG11AHE3/9AT 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 SMCG11AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG11AHE3/9AT?
All SMCG11AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG11AHE3/9AT, 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 SMCG11AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG11AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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