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Vishay General Semiconductor - Diodes Division SMCG7.0-E3/57T
- Part No.:
- SMCG7.0-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.0-E3/57T.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO215AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCG7.0-E3/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) in DO-215AB (SMCG) package, designed for clamping voltage transients on signal and power lines. It features 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 125 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCG7.0-E3/57T datasheet, SMCG7.0-E3/57T pinout, SMCG7.0-E3/57T application, or SMCG7.0-E3/57T equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low incremental surge resistance, MSL Level 1 rating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCG7.0-E3/57T operates as a bi-directional avalanche diode, exhibiting symmetrical breakdown behavior in both polarities with minimum breakdown voltage (VBR) of 7.78 V and maximum of 8.60 V at 10 mA test current. Its glass-passivated junction ensures stable leakage performance and fast response to ESD and lightning-induced transients.
Thermal design relies on low junction-to-lead thermal resistance (RθJL = 15 °C/W) and junction-to-ambient resistance (RθJA = 75 °C/W) under defined pad layout. It sustains 150 °C maximum junction temperature and meets UL 94 V-0 flammability requirements in its molded DO-215AB case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - reverse stand-off voltage; defines maximum continuous operating voltage before clamping begins |
| VC @ IPPM | 12.0 V at 125 A - clamping voltage during 10/1000 µs surge; limits downstream IC stress |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform; supports high-energy transients |
| ID @ VWM | 200 µA max - low leakage at rated stand-off; preserves signal integrity in high-impedance circuits |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; compatible with standard reflow profiles up to 260 °C peak |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-215AB (SMCG), surface-mount gull-wing lead frame with matte tin-plated terminals, 0.220–0.245 inch body width, 0.310 inch length, and 0.024–0.040 inch lead thickness. Bi-directional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally above VBR in either polarity |
| Leads (L1/L2) | Thermal and electrical interface | Provide low-inductance surge current path and primary heat dissipation route to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| Glass passivated junction | Ensures stable VBR tolerance (±5.5% typical), low leakage drift over temperature and lifetime |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units and ADAS sensor modules |
| MSL Level 1 compliance | Eliminates bake-out requirement and supports standard SMT assembly without moisture sensitivity risk |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Standby clamping device placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Limits transient voltage to ≤12.0 V at 125 A, preventing latch-up or gate oxide damage in downstream op-amps and microcontrollers. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to 24 V DC field wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated 24 V input stage, working in coordination with series impedance and optocoupler isolation. Use Value: Withstands repetitive 1500 W pulses while maintaining <200 µA leakage at 7.0 V, preserving input threshold accuracy and noise margin. |
| Consumer USB Port ESD Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-level protection on USB 2.0 D+/D− lines in set-top boxes or smart displays subjected to IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Fast-response TVS placed after common-mode choke to clamp differential and common-mode ESD events. Use Value: Sub-1 ns response time and 12.0 V clamping ensure USB transceivers remain within safe operating area during ESD strikes. | Use Scenario: Protecting RS-485 transceiver pins in base station backhaul equipment against lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bi-directional surge limiter on differential bus lines, coordinated with gas discharge tube (GDT) primary protection. Use Value: Symmetrical clamping maintains signal integrity across full differential swing while surviving 10/1000 µs surges up to 125 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/57T | Uni-directional; 7.0 V VWM; 11.3 V VC @ 102 A; SMA package (DO-214AC); lower PPPM (400 W) | Requires polarity awareness; unsuitable for AC or floating lines without external biasing | Select when cost-sensitive, uni-polar DC rails need basic protection and space allows SMA footprint |
| SMCJ7.0CA-E3/57T | Bi-directional; same VWM/VC specs; SMC package (DO-214AB); higher thermal mass but larger footprint (7.11 mm × 6.22 mm vs. SMCG's 7.87 mm × 3.17 mm) | Same clamping performance but less suitable for dense layouts or automated optical inspection due to wider body | Prefer when board layout permits larger package and higher sustained power derating is needed beyond 1500 W short pulse |
Compared with SMAJ7.0A-E3/57T and SMCJ7.0CA-E3/57T, the SMCG7.0-E3/57T delivers identical bi-directional clamping performance in a narrower, low-profile DO-215AB package optimized for automotive and space-constrained industrial PCBs - with AEC-Q101 qualification and MSL Level 1 assurance not shared by the SMAJ variant.
Availability
SMCG7.0-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer USB port hardening, and telecom line interface protection requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 traceability.
Supply support for SMCG7.0-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCG series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power, bi-directional transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where compact size and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMCG7.0-E3/57T and how is it measured?
The SMCG7.0-E3/57T has a maximum clamping voltage (VC) of 12.0 V, measured at 125 A peak pulse current (IPPM) using a standardized 10/1000 µs double-exponential waveform. This value is guaranteed per Vishay's datasheet (Document Number 88457, Rev. 14-Mar-12) and reflects worst-case voltage seen by protected circuitry during surge events - critical for ensuring downstream ICs like microcontrollers or transceivers remain within absolute maximum ratings. The SMCG7.0-E3/57T achieves this with low incremental surge resistance inherent to its glass-passivated junction structure.
Is SMCG7.0-E3/57T suitable for automotive applications?
Yes, SMCG7.0-E3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its DO-215AB package meets MSL Level 1, its junction temperature range spans −55 °C to +150 °C, and its bi-directional clamping supports floating or AC-coupled signal lines common in automotive networks. The SMCG7.0-E3/57T also complies with UL 94 V-0 and passes JESD201 Class 1A whisker testing - all documented in Vishay's official specification sheet.
Does SMCG7.0-E3/57T have polarity markings?
No, SMCG7.0-E3/57T does not have polarity markings because it is a bi-directional TVS diode. Unlike uni-directional variants (e.g., SMCG7.0A), the SMCG7.0-E3/57T uses the "CA" suffix convention indicating symmetrical breakdown behavior - meaning both terminals perform identically regardless of voltage polarity. This eliminates orientation errors during automated placement and simplifies layout for differential or floating lines. The absence of cathode band marking is confirmed in Vishay's mechanical data section for DO-215AB bi-directional devices.
What is the thermal resistance of SMCG7.0-E3/57T and how does it affect PCB layout?
The SMCG7.0-E3/57T has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient resistance (RθJA) of 75 °C/W - measured on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this pad area and ensure adequate copper pour connectivity. Reducing pad size increases RθJA significantly, risking thermal runaway during high-duty-cycle transients. The SMCG7.0-E3/57T's low RθJL makes it especially effective when paired with internal ground/power planes.
How does SMCG7.0-E3/57T compare to SMAJ7.0A-E3/57T in terms of circuit protection capability?
The SMCG7.0-E3/57T provides bi-directional clamping with 12.0 V VC at 125 A, while SMAJ7.0A-E3/57T is uni-directional with 11.3 V VC at only 102 A and lower 400 W peak power. The SMCG7.0-E3/57T's DO-215AB package offers superior surge handling and AEC-Q101 qualification - absent in the SMAJ series. For AC, differential, or floating lines, SMAJ7.0A-E3/57T requires external biasing or dual-device implementation, whereas the SMCG7.0-E3/57T delivers complete protection in one device. Both share RoHS compliance and tape-and-reel packaging (E3/57T), but only SMCG7.0-E3/57T meets automotive reliability standards.
SMCG7.0-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 112.8A
- 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)
SMCG7.0-E3/57T FAQ
1.How can I place an order for SMCG7.0-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.0-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 SMCG7.0-E3/57T reliable?
The price and inventory of SMCG7.0-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 SMCG7.0-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG7.0-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.0-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.0-E3/57T?
SMCG7.0-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.0-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 SMCG7.0-E3/57T?
For technical support, including SMCG7.0-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.0-E3/57T requirements.
6.How does Aetrix verify that SMCG7.0-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG7.0-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 SMCG7.0-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG7.0-E3/57T?
All SMCG7.0-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.0-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 SMCG7.0-E3/57T part is unused and in its original packaging.
Return procedure for SMCG7.0-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.0-E3/57T Tags
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