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Vishay General Semiconductor - Diodes Division SMCJ7.0A-E3/57T
- Part No.:
- SMCJ7.0A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0A-E3/57T.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:804
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Product details
Overview
SMCJ7.0A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on DC power rails and signal lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 125 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMCJ7.0A-E3/57T datasheet, SMCJ7.0A-E3/57T pinout, SMCJ7.0A-E3/57T application, or SMCJ7.0A-E3/57T equivalent, key selection criteria include its 7.78–8.60 V breakdown voltage range at 10 mA test current, low 0.065 %/°C temperature coefficient of VBR, AEC-Q101 qualification eligibility (via HE3 suffix variants), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
The SMCJ7.0A-E3/57T operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown range (7.78–8.60 V). Its glass-passivated junction ensures stable leakage performance and fast response (<1 ns) to ESD and lightning-induced surges, with clamping action limiting transient voltage to ≤12.0 V at 125 A.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to +150 °C junction temperature. The device meets J-STD-020 MSL Level 1 and supports reflow soldering at peak 260 °C, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.0 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (Breakdown) | 7.78–8.60 V at 10 mA - Confirmed avalanche onset range for reliable overvoltage triggering |
| VC (Clamping) | 12.0 V at 125 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - Surge energy handling capacity under standardized transient waveform |
| IPPM | 125 A - Maximum non-repetitive surge current the device safely clamps without failure |
| TJ max | +150 °C - Absolute maximum junction temperature defining thermal derating envelope |
| Leakage ID | 200 µA at 7.0 V - Low reverse leakage ensuring minimal standby power loss in protected circuits |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with cathode band marking. Dimensions: 7.11 × 6.22 × 2.62 mm (L × W × H); terminals are matte tin-plated for lead-free reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 7 V rail); conducts during overvoltage to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tight clamping (12.0 V @ 125 A), minimizing voltage overshoot on sensitive loads |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
| AEC-Q101 qualification path | Supports automotive-grade sourcing via HE3/HM3 suffix variants (e.g., SMCJ7.0AHE3_A) |
| UL 497B recognition (QVGQ2) | Validates suitability for telecom and industrial surge protection systems requiring safety agency approval |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5–12 V power distribution networks in engine control units (ECUs) and body electronics against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp transients before they reach downstream regulators and microcontrollers. Use Value: Limits peak voltage to ≤12.0 V during 125 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic and power management ICs. | Use Scenario: Safeguarding analog and digital signal lines (e.g., CAN, LIN, or analog sensor outputs) in factory automation modules exposed to relay switching noise. IC Role / Device Role / Timing Role: Placed across differential or single-ended sensor outputs to suppress EFT bursts and inductive kickback without loading normal signal paths. Use Value: Sub-1 ns response and 200 µA leakage at 7.0 V preserve signal integrity while blocking >1 kV transients per IEC 61000-4-4. |
| Consumer DC Adapter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Input-stage protection for wall adapters and USB-C PD chargers subjected to AC line transients and hot-plug surges. IC Role / Device Role / Timing Role: Mounted directly at DC input connector to absorb repetitive 1500 W surges before upstream DC-DC converters. Use Value: 1500 W PPPM and 75 °C/W RθJA allow sustained operation under EN 61000-4-5 Level 3 (1 kV/2 Ω) testing conditions. | Use Scenario: Primary-level surge suppression on Ethernet PHY power rails and auxiliary bias supplies in network switches and base station line cards. IC Role / Device Role / Timing Role: Unidirectional clamping element referenced to local ground plane, coordinated with GDT or MOV front-end stages. Use Value: UL 497B recognition and 12.0 V clamping support compliance with Telcordia GR-1089-CORE requirements for secondary protection zones. |
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-E3/61 | Lower PPPM (400 W), smaller SMA package, higher VC (12.5 V @ 32.1 A) | Targeted for space-constrained, lower-energy surge environments (e.g., portable electronics) | Select when board area is critical and surge threat level is ≤400 W; not suitable for automotive load dump. |
| SMCJ7.0CA-E3/57T | Bidirectional variant; same VWM (7.0 V), symmetric clamping in both polarities, no polarity marking | Required for AC-coupled or floating signal lines where reverse polarity transients occur (e.g., RS-485, audio) | Choose for bidirectional protection needs; identical footprint but different electrical behavior - not drop-in replacement. |
Compared with SMAJ7.0A-E3/61 and SMCJ7.0CA-E3/57T, the SMCJ7.0A-E3/57T delivers 3.75× higher surge power handling and maintains tighter clamping in unidirectional DC applications, making it optimal for automotive and industrial power rail protection where robustness outweighs size constraints.
Availability
SMCJ7.0A-E3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom line cards requiring stable component supply and long-lifecycle support.
Supply support for SMCJ7.0A-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, AEC-Q qualification, and high-volume manufacturability.
The SMCJ series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 readiness are mandatory design requirements.
FAQ
What is the breakdown voltage range of the SMCJ7.0A-E3/57T?
The SMCJ7.0A-E3/57T has a guaranteed breakdown voltage (VBR) range of 7.78 V to 8.60 V at 10 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent avalanche initiation across production lots and temperature extremes, directly supporting its use in precision 7 V rail protection schemes where overvoltage margin must be tightly controlled.
Is the SMCJ7.0A-E3/57T RoHS-compliant and halogen-free?
Yes, the SMCJ7.0A-E3/57T carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free versions, specify the "M3" suffix (e.g., SMCJ7.0A-M3/57T). Both E3 and M3 meet JESD 201 Class 2 whisker resistance requirements.
Can the SMCJ7.0A-E3/57T be used in automotive applications?
Yes - while the base SMCJ7.0A-E3/57T is commercial-grade, Vishay offers AEC-Q101 qualified variants under the HE3 and HM3 suffixes (e.g., SMCJ7.0AHE3_A). These undergo extended stress testing including temperature cycling, humidity bias, and surge lifetime validation, making them suitable for under-hood and infotainment systems requiring automotive qualification.
What is the maximum clamping voltage of the SMCJ7.0A-E3/57T during a surge event?
The SMCJ7.0A-E3/57T clamps to a maximum of 12.0 V when subjected to its rated 125 A peak pulse current (10/1000 µs waveform). This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does the SMCJ7.0A-E3/57T require a heatsink for standard operation?
No external heatsink is required for transient suppression duty, as the device is rated for 6.5 W steady-state power dissipation on an infinite heatsink at TA = 50 °C. In typical PCB layouts with minimum recommended copper pads (0.31″ × 0.31″), thermal performance remains within safe limits for intermittent surge events - continuous DC power dissipation is not its intended function.
SMCJ7.0A-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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 (SMCJ)
SMCJ7.0A-E3/57T FAQ
1.How can I place an order for SMCJ7.0A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0A-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 SMCJ7.0A-E3/57T reliable?
The price and inventory of SMCJ7.0A-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 SMCJ7.0A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.0A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0A-E3/57T?
SMCJ7.0A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0A-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 SMCJ7.0A-E3/57T?
For technical support, including SMCJ7.0A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0A-E3/57T requirements.
6.How does Aetrix verify that SMCJ7.0A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0A-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 SMCJ7.0A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.0A-E3/57T?
All SMCJ7.0A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0A-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 SMCJ7.0A-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.0A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0A-E3/57T Tags
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