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Vishay General Semiconductor - Diodes Division SMCG70CA-E3/9AT
- Part No.:
- SMCG70CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG70CA-E3/9AT.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,361
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Product details
Overview
SMCG70CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection on signal and power lines. It features a 70 V stand-off voltage (VWM), 77.8–86.0 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps to ≤113 V at 13.3 A (10/1000 µs waveform), making it suitable for automotive sensor interface and industrial I/O line protection.
For engineers reviewing the SMCG70CA-E3/9AT datasheet, SMCG70CA-E3/9AT pinout, SMCG70CA-E3/9AT application, or SMCG70CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche junction to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with no polarity marking required on the SMCG70CA-E3/9AT package.
Designed for robustness in harsh environments, the SMCG70CA-E3/9AT uses glass-passivated chip construction, meets MSL level 1 per J-STD-020 (260 °C reflow peak), and is qualified to AEC-Q101 for automotive under-hood and chassis applications. Its 150 °C maximum junction temperature supports operation in thermally constrained enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 77.8 V / 86.0 V at 10 mA - Ensures reliable turn-on above normal operating voltage with margin |
| VC @ IPPM | ≤113 V at 13.3 A (10/1000 µs) - Clamping voltage limits stress on downstream ICs like CAN transceivers or ADC inputs |
| PPPM | 1500 W - Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) |
| ID @ VWM | ≤1.0 µA - Negligible leakage at rated stand-off, preserving low-power sensor bias networks |
| TJ max | +150 °C - Enables deployment in engine control units and motor drive feedback paths |
| RθJA | 75 °C/W - Requires minimum 8.0 mm × 8.0 mm copper pad per terminal for full power derating |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount, bidirectional, unmarked case (no cathode/anode identification required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output for transient energy; symmetric conduction eliminates orientation constraints during placement |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completes low-inductance path to ground or rail; requires equal copper area (8.0 mm × 8.0 mm) for thermal and surge performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass-passivated junction | Prevents moisture ingress and metallization degradation, ensuring long-term clamping stability in humid environments |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning or baking |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin for 3.3 V logic |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential pair or supply rail to limit transient overvoltage before reaching MCU analog front-end or transceiver. Use Value: Maintains signal integrity during ISO 16750-2 load dump tests (up to 120 V surge) while adding <1 pF capacitance to preserve 250 kbps LIN timing margins. | Use Scenario: Safeguarding PLC digital input modules against field-wiring surges induced by relay coil de-energization or lightning-induced coupling. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor between input terminal and common reference, shunting >1 kA surge current away from optocoupler input stage. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) without additional series impedance or filtering delay. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY magnetics and PoE controller inputs from induced surges on outdoor cabling in telecom base stations. IC Role / Device Role / Timing Role: Primary-level TVS mounted at RJ45 connector entry point, clamping common-mode transients before isolation transformer primary. Use Value: Survives repeated 10/1000 µs surges up to 1500 W without parameter drift, extending field service life beyond 10 years. | Use Scenario: Input-stage surge suppression in USB-C PD adapters subjected to AC mains transients and hot-plug events. IC Role / Device Role / Timing Role: Bidirectional clamp across bridge rectifier output to prevent overvoltage damage to primary-side controller ICs during MOV failure modes. Use Value: Limits peak voltage to ≤113 V during 1.2/50 µs surges, protecting 150 V-rated MOSFETs and reducing need for oversized bulk capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ70CA | Same VWM (70 V) and PPPM (400 W), but lower 400 W rating and SMA (DO-214AC) package with higher RθJA (110 °C/W) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load dump | Select SMAJ70CA only for cost-sensitive consumer applications where 1500 W surge immunity is not required. |
| SMCJ70CA | Identical VWM (70 V), PPPM (1500 W), and DO-214AB package; differs in thermal resistance (RθJA = 18 °C/W on large copper) and AEC-Q101 status (not qualified) | Higher thermal mass enables better sustained surge handling but lacks automotive qualification documentation | Choose SMCJ70CA for industrial power supplies needing higher thermal margin, but verify qualification requirements with end-customer. |
Compared with SMAJ70CA and SMCJ70CA, the SMCG70CA-E3/9AT delivers AEC-Q101 assurance and optimized SMT manufacturability in DO-215AB-critical for automotive Tier 1 suppliers requiring traceable qualification and MSL-1 compliance without layout redesign.
Availability
SMCG70CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCG70CA-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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in space-constrained automotive and industrial systems where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of SMCG70CA-E3/9AT at its rated peak pulse current?
The SMCG70CA-E3/9AT clamps to a maximum of 113 V when subjected to its specified peak pulse current of 13.3 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. The clamping performance of SMCG70CA-E3/9AT ensures downstream components see limited overvoltage stress during surge events.
Is SMCG70CA-E3/9AT suitable for automotive applications?
Yes, SMCG70CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its glass-passivated junction, MSL Level 1 reflow rating, and -55 °C to +150 °C operating range meet stringent automotive environmental requirements. The SMCG70CA-E3/9AT data sheet confirms qualification per JEDEC stress test standards applicable to discrete semiconductors.
Does SMCG70CA-E3/9AT have polarity markings on the package?
No, SMCG70CA-E3/9AT is a bidirectional TVS diode and carries no polarity marking on the DO-215AB case. Both terminals are functionally identical, allowing unrestricted orientation during automated placement. This symmetry simplifies PCB layout and eliminates risk of reverse installation-unlike unidirectional variants such as SMCG70A, which feature a cathode band.
What is the maximum leakage current of SMCG70CA-E3/9AT at its stand-off voltage?
At its 70 V stand-off voltage (VWM), the SMCG70CA-E3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor bias networks and minimizes standby power loss in battery-operated systems. The SMCG70CA-E3/9AT maintains this specification across its full operating temperature range per the Vishay datasheet.
How does the SMCG70CA-E3/9AT package differ from SMAJ or SMCJ series packages?
The SMCG70CA-E3/9AT uses the DO-215AB (SMCG) package, which offers lower profile and improved thermal resistance (RθJA = 75 °C/W) compared to SMAJ (DO-214AC) and matches SMCJ (DO-214AB) in surge rating but with tighter dimensional control for fine-pitch automated placement. Unlike SMCJ70CA, the SMCG70CA-E3/9AT is AEC-Q101 qualified and supplied in 13" tape (9AT), supporting high-volume automotive production.
SMCG70CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.3A
- 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)
SMCG70CA-E3/9AT FAQ
1.How can I place an order for SMCG70CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG70CA-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 SMCG70CA-E3/9AT reliable?
The price and inventory of SMCG70CA-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 SMCG70CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG70CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG70CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG70CA-E3/9AT?
SMCG70CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG70CA-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 SMCG70CA-E3/9AT?
For technical support, including SMCG70CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG70CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG70CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG70CA-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 SMCG70CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG70CA-E3/9AT?
All SMCG70CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG70CA-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 SMCG70CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG70CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG70CA-E3/9AT Tags
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