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Vishay General Semiconductor - Diodes Division SMCG70C-E3/57T
- Part No.:
- SMCG70C-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG70C-E3/57T.pdf
- Description:
- TVS DIODE 70VWM 125VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,966
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Product details
Overview
SMCG70C-E3/57T from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) in DO-215AB (SMCG) package, rated for 70 V stand-off voltage, 1500 W peak pulse power, and clamping voltage of 113 V at 13.3 A IPPM under 10/1000 µs waveform. It provides robust ESD and surge protection for automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SMCG70C-E3/57T datasheet, SMCG70C-E3/57T pinout, SMCG70C-E3/57T application, or SMCG70C-E3/57T equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage range 77.8–86.0 V at 1 mA test current and maximum reverse leakage of 1.0 µA at 70 V. Its low incremental surge resistance and fast response time enable effective suppression of inductive switching transients and lightning-induced surges.
Thermal performance is defined by junction-to-ambient thermal resistance of 75 °C/W (on recommended pad layout) and junction-to-lead resistance of 15 °C/W, supporting reliable operation up to 150 °C junction temperature. The device meets UL 94 V-0 flammability rating and JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before clamping initiates |
| PPPM | 1500 W - Peak transient energy absorption capability under 10/1000 µs waveform |
| VC @ IPPM | 113 V - Clamped voltage across device at 13.3 A peak pulse current |
| VBR min/max | 77.8 V / 86.0 V - Breakdown voltage range at 1 mA, ensuring consistent turn-on threshold |
| TJ max | +150 °C - Maximum allowable junction temperature for sustained reliability |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; safe for standard reflow without dry pack |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-215AB (SMCG), low-profile surface-mount case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bi-directional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; identical clamping behavior in either direction |
| Case (exposed metal) | Thermal and mechanical anchor | Integral part of thermal path to PCB copper; requires direct connection to thermal pad per datasheet layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable breakdown characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and body electronics |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1 rating | Eliminates bake requirements and floor-life tracking, reducing manufacturing overhead in high-volume SMT lines |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and automotive enclosures without additional conformal coating |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector interface to limit transient excursions below IC absolute maximum ratings. Use Value: Maintains signal integrity during 1500 W surges while holding clamped voltage ≤113 V, preventing latch-up or gate oxide damage in protected ICs. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and ground loop transients. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on 24 V DC input channels, coordinated with upstream fusing and filtering. Use Value: Withstands repetitive 10/1000 µs surges up to 13.3 A without degradation, extending maintenance intervals in factory automation systems. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs and RS-485 transceivers in network edge devices from ESD and lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bi-directional TVS mounted differential pair termination point to suppress mode conversion transients. Use Value: 113 V clamping voltage ensures compliance with IEC 61000-4-5 Level 3 (1 kV line-earth) when used with proper PCB layout. | Use Scenario: Protecting microcontroller GPIOs and gate drivers in smart home appliances (e.g., washing machine motor inverters) from commutation spikes. IC Role / Device Role / Timing Role: Localized clamp adjacent to MOSFET driver ICs to prevent false triggering or overvoltage damage during brushless motor switching. Use Value: Fast response time and low capacitance (<100 pF) avoid signal distortion on 10–100 kHz PWM control lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ70A-E3/57T | Uni-directional; 70 V VWM; SMA package; lower PPPM (400 W); higher RθJA (100 °C/W) | Requires polarity-aware layout; unsuitable for AC-coupled or bidirectional signal lines | Select only if unidirectional protection suffices and board space allows larger SMA footprint |
| SMCJ70CA-E3/57T | Bi-directional; same VWM and PPPM; SMC package; higher thermal mass; RθJA = 50 °C/W | Better thermal performance but 30% larger footprint; not AEC-Q101 qualified | Prefer for non-automotive industrial use where heat dissipation is critical and space permits |
Compared with SMCG70C-E3/57T, SMAJ70A-E3/57T offers lower cost but lacks bi-directionality and automotive qualification, while SMCJ70CA-E3/57T delivers superior thermal handling at the expense of size and automotive compliance-making SMCG70C-E3/57T optimal for space-constrained AEC-Q101 designs.
Availability
SMCG70C-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SMCG70C-E3/57T 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, TVS, MOSFETs, and optoelectronics with emphasis on reliability and application-specific performance.
The SMCG series was engineered specifically for high-power, surface-mount transient suppression in automotive and industrial environments where AEC-Q101 compliance, low profile, and automated assembly are mandatory.
FAQ
What does the "C" suffix in SMCG70C-E3/57T indicate?
The "C" in SMCG70C-E3/57T denotes bi-directional configuration, meaning the device clamps transients equally in both polarities. Unlike uni-directional variants (e.g., SMCG70A), it has no cathode marking and is used where signal lines may experience voltage reversals or AC coupling-critical for protecting differential buses like CAN or RS-485. This functionality is confirmed in Vishay's 88457 datasheet, Table on page 2.
Is SMCG70C-E3/57T suitable for automotive applications?
Yes, SMCG70C-E3/57T is AEC-Q101 qualified, as explicitly stated in the "Mechanical Data" section of the Vishay datasheet (Document Number 88457, page 1). It undergoes rigorous stress testing-including temperature cycling, highly accelerated life testing, and surge endurance-to meet automotive reliability standards for under-hood and cabin electronics.
What is the recommended PCB pad layout for SMCG70C-E3/57T?
Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W PPPM and 75 °C/W RθJA. The DO-215AB outline drawing (page 4) defines exact land pattern dimensions, and thermal vias under the exposed leadframe are strongly advised to enhance heat transfer-deviation reduces surge capability and risks thermal runaway during repeated events.
How does SMCG70C-E3/57T differ from SMCG70A-E3/57T?
SMCG70C-E3/57T is bi-directional with symmetrical clamping, while SMCG70A-E3/57T is uni-directional and features a cathode band. Their VWM (70 V), PPPM (1500 W), and package (DO-215AB) are identical, but SMCG70A supports forward conduction and has different leakage specs (1000 µA vs. 1.0 µA). Use SMCG70C-E3/57T for AC or floating signal lines; SMCG70A-E3/57T only where polarity is fixed and forward current may occur.
Does SMCG70C-E3/57T require special handling during reflow soldering?
No special handling is required: SMCG70C-E3/57T is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. It may be processed using standard lead-free reflow profiles without dry packing, baking, or humidity-controlled storage-reducing logistics complexity and eliminating floor-life tracking in SMT lines.
SMCG70C-E3/57T 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
SMCG70C-E3/57T FAQ
1.How can I place an order for SMCG70C-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG70C-E3/57T 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 SMCG70C-E3/57T reliable?
The price and inventory of SMCG70C-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG70C-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG70C-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG70C-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG70C-E3/57T?
SMCG70C-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG70C-E3/57T 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 SMCG70C-E3/57T?
For technical support, including SMCG70C-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG70C-E3/57T requirements.
6.How does Aetrix verify that SMCG70C-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG70C-E3/57T 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 SMCG70C-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG70C-E3/57T?
All SMCG70C-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG70C-E3/57T, 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 SMCG70C-E3/57T part is unused and in its original packaging.
Return procedure for SMCG70C-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG70C-E3/57T Tags
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