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Vishay General Semiconductor - Diodes Division SMCG7.0CA-M3/9AT
- Part No.:
- SMCG7.0CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.0CA-M3/9AT.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,083
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Product details
Overview
SMCG7.0CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for clamping voltage transients on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 µs), 12.0 V maximum clamping voltage (VC) at 125 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG7.0CA-M3/9AT datasheet, SMCG7.0CA-M3/9AT pinout, SMCG7.0CA-M3/9AT application, or SMCG7.0CA-M3/9AT equivalent, this device is selected for robust ESD and surge protection in bidirectional signal paths where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are required - especially in automotive sensor interfaces, industrial I/O modules, and telecom line drivers.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (7.78 V / 8.60 V), ID ≤ 1000 µA at VWM = 7.0 V, and VC = 12.0 V measured at IPPM = 125 A under 10/1000 µs waveform. Its glass-passivated junction ensures stable leakage and low incremental surge resistance.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from –55 °C to +150 °C. The device meets MSL level 1 (260 °C reflow peak) and is qualified to AEC-Q101, confirming suitability for automotive under-hood and chassis-mounted applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; sets threshold for protecting 5 V–7 V logic/sensor circuits. |
| VBR (min/max) | 7.78 V / 8.60 V at IT = 10 mA - Confirmed breakdown range ensures reliable triggering without premature conduction during normal operation. |
| VC @ IPPM | 12.0 V at 125 A - Clamping voltage limits transient overshoot to safe levels for downstream ICs like CAN transceivers or ADC front-ends. |
| PPPM | 1500 W (10/1000 µs) - Sustains high-energy surges common in automotive load-dump or inductive switching events. |
| ID @ VWM | ≤1000 µA - Low leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max. | +150 °C - Enables deployment in engine control units, motor drives, and other high-temperature automotive environments. |
| Package | SMCG (DO-215AB) - Surface-mount gull-wing package with 8.0 mm × 8.0 mm copper pad footprint for optimal thermal dissipation. |
Pinout & Package
SMCG7.0CA-M3/9AT uses the SMCG (DO-215AB) surface-mount package: low-profile gull-wing leads, matte tin-plated terminals solderable per J-STD-002/JESD 22-B102, UL 94 V-0 molding compound, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional current path | No polarity marking; either terminal serves as anode or cathode depending on transient polarity - enables single-component protection of AC-coupled or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics - supports PPAP and long-term reliability requirements. |
| Halogen-free & RoHS compliant (M3 suffix) | Meets global environmental regulations and JEDEC JESD201 Class 2 whisker resistance - suitable for consumer, industrial, and automotive production. |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges without degradation when mounted per recommended 8.0 mm × 8.0 mm copper pads. |
| Fast response time (<1 ns) | Clamps transients before sensitive downstream circuitry (e.g., microcontroller GPIO or RS-485 transceivers) experiences overvoltage stress. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot relative to breakdown - critical for protecting 3.3 V or 5 V logic rails with tight margin. |
Applications
| Automotive Sensor Interface | Industrial Analog Input Module |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensor outputs from ESD and load-switching transients in vehicle cabins and powertrain systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±15 kV ESD (IEC 61000-4-2) and ±100 V surges (ISO 16750-2). Use Value: Prevents latch-up or damage to automotive-grade op-amps and ADCs while maintaining signal fidelity due to low capacitance and symmetrical clamping. |
Use Scenario: Shielding 4–20 mA current-loop inputs and 0–10 V analog channels in PLC I/O cards from field-wiring induced surges and ground-bounce noise. IC Role / Device Role / Timing Role: Primary overvoltage protector on input terminals, working in concert with series current-limiting resistors and filtering capacitors. Use Value: Ensures system uptime in factory automation by surviving repeated 1 kV/500 A surges (IEC 61000-4-5) without parameter drift or failure. |
| Telecom Line Driver Protection | Consumer USB/DisplayPort ESD Guard |
Use Scenario: Safeguarding RS-485/RS-232 transceivers and Ethernet PHYs in base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient suppressor on differential pair lines, placed before common-mode chokes and isolation transformers. Use Value: Maintains signal integrity up to 25 Mbps by limiting clamping overshoot to <12 V and exhibiting <100 pF junction capacitance at zero bias. |
Use Scenario: ESD protection for USB 2.0 data lines and DisplayPort AUX channels in laptops and docking stations subjected to user-handling discharges. IC Role / Device Role / Timing Role: Board-level TVS adjacent to connectors, rated for ±15 kV contact discharge per IEC 61000-4-2. Use Value: Eliminates need for additional discrete ESD diodes by integrating bidirectional clamping into a single 2-pin device with minimal PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/57T | Unidirectional; VWM = 7.0 V, VC = 12.0 V, same PPPM = 400 W (lower energy handling) | Limited to DC-biased lines; not suitable for AC or differential signals without external biasing. | Select only if polarity is fixed and surge energy is ≤400 W - avoids overdesign cost but requires circuit-level polarity awareness. |
| SMCJ7.0CA | Same bidirectional function, VWM = 7.0 V, but higher PPPM = 1500 W and larger SMC (DO-214AB) package (7.11 mm × 6.22 mm vs. SMCG's 7.87 mm × 7.11 mm) | Higher thermal mass allows longer surge duration tolerance; less space-efficient for dense layouts. | Choose when board layout permits larger footprint and higher sustained surge duty cycles are expected - e.g., industrial motor drive controls. |
Compared with SMAJ7.0A-E3/57T and SMCJ7.0CA, SMCG7.0CA-M3/9AT delivers identical clamping performance in a smaller, halogen-free, AEC-Q101-qualified package optimized for automotive and space-constrained industrial designs - balancing energy rating, footprint, and compliance without requiring PCB redesign.
Availability
SMCG7.0CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line driver applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG7.0CA-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, efficiency, and application-specific optimization.
The SMCG series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, low clamping voltage, and robust surge handling in compact surface-mount formats.
FAQ
What is the clamping voltage of SMCG7.0CA-M3/9AT at its rated peak pulse current?
The SMCG7.0CA-M3/9AT has a maximum clamping voltage (VC) of 12.0 V when subjected to its peak pulse current (IPPM) of 125 A under the standard 10/1000 µs waveform. This value is measured per Figure 3 in Vishay document 88457 and ensures downstream components see limited overvoltage during surge events. The SMCG7.0CA-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG7.0CA-M3/9AT suitable for automotive applications?
Yes, SMCG7.0CA-M3/9AT is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for under-hood and chassis-mounted automotive systems. Its halogen-free (M3) construction, MSL level 1 reflow compatibility, and bidirectional symmetry support use in LIN, CAN, and sensor interface protection per ISO 16750-2 and ISO 7637-2 requirements. The SMCG7.0CA-M3/9AT meets these standards without derating.
How does the SMCG7.0CA-M3/9AT differ from unidirectional variants like SMCG7.0A?
The SMCG7.0CA-M3/9AT is bidirectional with symmetrical breakdown and clamping behavior in both polarities, while SMCG7.0A is unidirectional and conducts only in reverse bias. The "CA" suffix explicitly denotes bidirectional capability, eliminating the need for dual-diode configurations on AC or differential lines. The SMCG7.0CA-M3/9AT also lacks polarity marking, unlike the banded cathode on SMCG7.0A.
What is the thermal resistance of SMCG7.0CA-M3/9AT, and how does it affect PCB layout?
The SMCG7.0CA-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve rated power dissipation (6.5 W at TA = 50 °C), designers must implement minimum pad dimensions and avoid excessive thermal vias that compromise mechanical strength. The SMCG7.0CA-M3/9AT's thermal performance is validated using this layout.
Does SMCG7.0CA-M3/9AT meet RoHS and halogen-free requirements?
Yes, the "M3" suffix in SMCG7.0CA-M3/9AT indicates halogen-free, RoHS-compliant construction meeting JEDEC JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. This version replaces lead-free "E3" variants in environmentally regulated markets and is approved for industrial and automotive production without exemptions. The SMCG7.0CA-M3/9AT documentation confirms full compliance per Vishay's material categorization policy.
SMCG7.0CA-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 125A
- 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)
SMCG7.0CA-M3/9AT FAQ
1.How can I place an order for SMCG7.0CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.0CA-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 SMCG7.0CA-M3/9AT reliable?
The price and inventory of SMCG7.0CA-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 SMCG7.0CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG7.0CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.0CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.0CA-M3/9AT?
SMCG7.0CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.0CA-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 SMCG7.0CA-M3/9AT?
For technical support, including SMCG7.0CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.0CA-M3/9AT requirements.
6.How does Aetrix verify that SMCG7.0CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG7.0CA-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 SMCG7.0CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG7.0CA-M3/9AT?
All SMCG7.0CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.0CA-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 SMCG7.0CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG7.0CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.0CA-M3/9AT Tags
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