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Vishay General Semiconductor - Diodes Division SMCG11A-E3/9AT
- Part No.:
- SMCG11A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG11A-E3/9AT.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,752
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Product details
Overview
SMCG11A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, featuring a 11 V standoff voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V clamping voltage (VC) at 82.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform. It protects MOSFETs and signal lines in automotive powertrain control modules against inductive switching transients.
For engineers reviewing the SMCG11A-E3/9AT datasheet, SMCG11A-E3/9AT pinout, SMCG11A-E3/9AT application, or SMCG11A-E3/9AT equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, glass-passivated junction, and MSL Level 1 reliability for high-volume automotive PCB assembly.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy above its breakdown threshold while maintaining low leakage (<5 µA at VWM) and fast response time (<1 ns). Its thermal resistance (RθJA = 75 °C/W) and junction temperature range (−55 °C to +150 °C) support operation in under-hood automotive environments.
The SMCG11A-E3/9AT uses a DO-215AB molded package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards, and meets UL 94 V-0 flammability rating. It is RoHS-compliant (E3 suffix) and rated for 200 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V automotive systems. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range ensures reliable triggering without premature conduction. |
| VC @ IPPM | 18.2 V at 82.4 A - Clamping voltage during 10/1000 µs surge limits stress on downstream ICs like microcontrollers or gate drivers. |
| PPPM | 1500 W - Peak transient energy handling capacity supports ISO 7637-2 Pulse 1/2a/5a compliance testing. |
| TJ max. | +150 °C - Enables placement near heat sources (e.g., power MOSFETs) in engine control units without derating. |
| IFSM | 200 A - Withstands high-current inductive kickback events common in solenoid and relay driver circuits. |
| Package | SMCG (DO-215AB) - Low-profile SMD outline compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
SMCG11A-E3/9AT is housed in the SMCG (DO-215AB) surface-mount package: a gull-wing leaded, dual-terminal case with cathode identified by a band on the anode-end side. Leads are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference plane; completes clamping loop during overvoltage events. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 12 V supply rail or sensor input); conducts when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in humid under-hood conditions. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (e.g., load dump), improving protection margin for sensitive gate oxides. |
| MSL Level 1 (260 °C peak) | Enables single-pass reflow without baking or special handling-reduces manufacturing cost and risk of moisture-related popcorning. |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for compliance with automotive safety standards (e.g., ISO 26262 hardware requirements). |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protection of 12 V supply rails feeding engine control unit (ECU) microcontrollers during alternator load dump events. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and LDO input to limit transient voltage to ≤18.2 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic supplies by clamping ISO 7637-2 Pulse 5a surges within specification. |
Use Scenario: Safeguarding analog input pins of motor drive current-sense amplifiers exposed to back-EMF spikes from brushed DC motors. IC Role / Device Role / Timing Role: Fast-response TVS connected across differential sense inputs to clamp sub-100 ns transients before amplifier saturation. Use Value: Maintains measurement accuracy by limiting input voltage excursion to <18.2 V, avoiding ADC saturation or internal ESD diode conduction. |
| Automotive Body Electronics | Telecom Power Interface |
|
Use Scenario: Overvoltage protection for LIN bus transceivers subjected to battery disconnect transients and electrostatic discharge. IC Role / Device Role / Timing Role: Unidirectional TVS installed on VCC pin of LIN transceiver to suppress >100 V spikes with <1 ns response. Use Value: Ensures uninterrupted communication during vehicle battery jump-start events by holding VCC below 18.2 V for ≥100 µs. |
Use Scenario: Input-stage protection for PoE-powered remote radio units receiving 48 V DC via outdoor cabling susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on 48 V input rail upstream of DC-DC converter, rated for 1500 W peak pulse power. Use Value: Absorbs up to 1500 W of transient energy per event without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/57T | Same VWM (11 V), lower PPPM (400 W), SMA (DO-214AC) package with higher RθJA (110 °C/W). | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current inductive loads. | Select when board space allows larger footprint and surge energy is ≤400 W. |
| SMCJ11A-E3/9AT | Same VWM (11 V), identical PPPM (1500 W), but SMC (DO-214AB) package with 2.5× larger thermal pad area and RθJA = 35 °C/W. | Better thermal performance for sustained surge duty cycles; requires larger PCB real estate. | Select when thermal management is critical and layout accommodates 7.11 mm × 6.22 mm body size. |
Compared with SMAJ11A-E3/57T and SMCJ11A-E3/9AT, the SMCG11A-E3/9AT offers optimal balance of compact DO-215AB footprint, AEC-Q101 qualification, and full 1500 W surge capability-making it preferred for space-constrained automotive modules requiring production-grade reliability.
Availability
SMCG11A-E3/9AT is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive inputs, automotive body electronics, and telecom power interface applications requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG11A-E3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components meeting global safety and environmental standards.
The SMCG series was developed specifically for AEC-Q101-compliant transient suppression in space-constrained automotive ECUs and industrial controls, prioritizing low-profile packaging, robust surge handling, and process-controlled parametric consistency.
FAQ
What is the clamping voltage of the SMCG11A-E3/9AT under maximum rated surge current?
The SMCG11A-E3/9AT has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current (IPPM) of 82.4 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains within safe operating limits during standardized surge events. The SMCG11A-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCG11A-E3/9AT suitable for bidirectional transient protection?
No, the SMCG11A-E3/9AT is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the SMCG11CA variant. Using the SMCG11A-E3/9AT in bidirectional configurations risks failure during reverse-polarity transients, as it lacks symmetrical clamping in both directions. Always verify polarity alignment before placing the SMCG11A-E3/9AT in-circuit.
Does the SMCG11A-E3/9AT meet automotive qualification standards?
Yes, the SMCG11A-E3/9AT is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88457, Revision 09-Jan-2024). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock-ensuring suitability for automotive powertrain, chassis, and body electronics. The "E3" suffix further confirms RoHS compliance and industrial-grade reliability.
What is the thermal resistance of the SMCG11A-E3/9AT, and how does it affect layout design?
The SMCG11A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet. To maintain junction temperature below 150 °C during repeated surges, designers must provide adequate copper area and avoid excessive trace length. The SMCG11A-E3/9AT's thermal performance is optimized for standard reflow profiles without additional heatsinking.
How does the SMCG11A-E3/9AT differ from the SMAJ11A in terms of surge handling capability?
The SMCG11A-E3/9AT delivers 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform, whereas the SMAJ11A is rated for only 400 W under the same conditions. This threefold increase enables the SMCG11A-E3/9AT to withstand harsher transients such as ISO 7637-2 Pulse 5a (load dump), which the SMAJ11A cannot reliably suppress. Both share 11 V VWM and 18.2 V VC, but the SMCG11A-E3/9AT's DO-215AB package also provides superior thermal dissipation and AEC-Q101 validation not present in the SMAJ series.
SMCG11A-E3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG11A-E3/9AT FAQ
1.How can I place an order for SMCG11A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG11A-E3/9AT 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 SMCG11A-E3/9AT reliable?
The price and inventory of SMCG11A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG11A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG11A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG11A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG11A-E3/9AT?
SMCG11A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG11A-E3/9AT 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 SMCG11A-E3/9AT?
For technical support, including SMCG11A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG11A-E3/9AT requirements.
6.How does Aetrix verify that SMCG11A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG11A-E3/9AT 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 SMCG11A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG11A-E3/9AT?
All SMCG11A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG11A-E3/9AT, 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 SMCG11A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG11A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG11A-E3/9AT Tags
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