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Vishay General Semiconductor - Diodes Division SMCG12CA-M3/9AT
- Part No.:
- SMCG12CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG12CA-M3/9AT.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,385
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Product details
Overview
SMCG12CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, with 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and AEC-Q101 qualification for automotive-grade reliability. It protects signal lines and power rails in sensor interfaces and automotive ECUs against ESD and inductive switching transients.
For engineers reviewing the SMCG12CA-M3/9AT datasheet, SMCG12CA-M3/9AT pinout, SMCG12CA-M3/9AT application, or SMCG12CA-M3/9AT equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 75 °C/W), MSL Level 1 compliance, and halogen-free RoHS industrial-grade construction per Vishay Document 88457.
Technical Context
The SMCG12CA-M3/9AT operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±13.3 V (min VBR) in both polarities. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, enabling sub-nanosecond response to 10/1000 µs transients.
Designed for surface-mount use on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power at TA = 25 °C with derating above 25 °C per Fig. 2, and supports operating junction temperatures from –55 °C to +150 °C. Polarity marking is omitted-consistent with bidirectional device convention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse stand-off voltage before clamping begins |
| VBR (min/max) | 13.3 V / 14.7 V - guaranteed avalanche breakdown range at 1 mA test current |
| VC @ IPPM | 19.9 V - clamped voltage at peak pulse current (75.4 A), limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient, defining heatsinking requirements |
| MSL Level | Level 1 - no floor life limitation; reflow compatible up to 260 °C peak |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current in either polarity; no cathode band marking |
| Cathode | Transient current exit (bidirectional) | Completes symmetrical clamping path; identical terminal function to Anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, with low leakage (<1 μA at VWM) |
| Halogen-free & RoHS | M3 suffix confirms halogen-free molding compound and lead finish, meeting industrial environmental compliance |
| AEC-Q101 qualification | Validates robustness for automotive under-hood and body-control module applications |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Line |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver I/O pins in automotive door modules against load-dump and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point. Use Value: Limits transient voltage to ≤19.9 V during 1500 W surges, preserving transceiver integrity without adding series impedance. | Use Scenario: Shielding differential CAN_H/CAN_L lines from inductive kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Common-mode surge suppressor across bus pair, leveraging symmetrical breakdown. Use Value: Maintains signal integrity by clamping common-mode spikes while preserving DC bias and data eye margins. |
| Consumer Camera Module | Telecom Power Input Stage |
Use Scenario: Safeguarding MIPI CSI-2 data lanes in smartphone camera modules from board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed adjacent to image sensor I/O pads. Use Value: Delivers <1 μA leakage at 12 V and fast response, preventing false triggers or pixel corruption during discharge events. | Use Scenario: Front-end surge suppression on 12 V telecom power inputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device before DC/DC converter input stage. Use Value: Absorbs 1500 W pulses without failure, reducing need for secondary MOV or GDT stages in compact designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same VWM (12 V) and PPPM (400 W), but lower power rating and SMA (DO-214AC) package | Limited to ≤400 W surges; unsuitable for high-energy automotive load-dump scenarios | Select SMAJ12CA only for cost-sensitive consumer applications with lower surge exposure |
| SMCJ12CA | Same VWM (12 V) and higher PPPM (1500 W), but larger SMC (DO-214AB) package and higher RθJA (50 °C/W) | Requires more PCB area; thermal performance differs due to package geometry and pad layout | Choose SMCJ12CA when existing layouts accommodate SMC footprint and higher thermal mass is acceptable |
Compared with SMAJ12CA and SMCJ12CA, the SMCG12CA-M3/9AT offers identical 12 V clamping and 1500 W rating in a smaller DO-215AB outline, enabling denser layouts while maintaining AEC-Q101 qualification and halogen-free compliance-critical for next-gen automotive electronics.
Availability
SMCG12CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, telecom power input staging, and consumer camera interface shielding requiring stable component supply across production lifecycles.
Supply support for SMCG12CA-M3/9AT 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, surface-mount transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage range for SMCG12CA-M3/9AT?
The SMCG12CA-M3/9AT has a guaranteed breakdown voltage (VBR) range of 13.3 V to 14.7 V at 1 mA test current, measured in both directions due to its bidirectional construction. This range ensures consistent clamping onset across polarity reversals and is validated per ANSI/IEEE C62.35 standards. The SMCG12CA-M3/9AT maintains this specification across its full operating temperature range.
Is SMCG12CA-M3/9AT suitable for automotive applications?
Yes, the SMCG12CA-M3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body-control modules. Its halogen-free (M3 suffix), MSL Level 1, and 150 °C max junction temperature support deployment in demanding automotive environments. The SMCG12CA-M3/9AT meets the reliability and thermal requirements defined in AEC-Q101 stress test conditions.
What does the "M3" suffix indicate in SMCG12CA-M3/9AT?
The "M3" suffix in SMCG12CA-M3/9AT denotes halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD 201 Class 2 whisker resistance. It distinguishes the part from "E3" (RoHS but not halogen-free) and "HM3" (halogen-free + AEC-Q101). The SMCG12CA-M3/9AT uses matte tin-plated leads and UL 94 V-0 molding compound.
How is the pinout configured for bidirectional operation in SMCG12CA-M3/9AT?
The SMCG12CA-M3/9AT has two terminals with identical bidirectional functionality: one labeled Anode and one Cathode in the datasheet, but no physical polarity marking on the device. Both terminals conduct equally during positive or negative transients, enabling symmetric clamping. The SMCG12CA-M3/9AT requires no orientation during placement-unlike unidirectional variants which feature a cathode band.
What is the maximum clamping voltage of SMCG12CA-M3/9AT at rated surge current?
The SMCG12CA-M3/9AT clamps to a maximum of 19.9 V at its rated peak pulse current (IPPM) of 75.4 A, tested with a 10/1000 µs waveform. This VC value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is measured under standardized conditions on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines.
SMCG12CA-M3/9AT 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 75.4A
- 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)
SMCG12CA-M3/9AT FAQ
1.How can I place an order for SMCG12CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG12CA-M3/9AT 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 SMCG12CA-M3/9AT reliable?
The price and inventory of SMCG12CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG12CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG12CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG12CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG12CA-M3/9AT?
SMCG12CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG12CA-M3/9AT 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 SMCG12CA-M3/9AT?
For technical support, including SMCG12CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG12CA-M3/9AT requirements.
6.How does Aetrix verify that SMCG12CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG12CA-M3/9AT 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 SMCG12CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG12CA-M3/9AT?
All SMCG12CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG12CA-M3/9AT, 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 SMCG12CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG12CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG12CA-M3/9AT Tags
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