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Vishay General Semiconductor - Diodes Division SMCJ7.0HE3/57T
- Part No.:
- SMCJ7.0HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0HE3/57T.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,344
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Product details
Overview
SMCJ7.0HE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. It features a 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 dissipation (PPPM) with 10/1000 µs waveform - ideal for automotive power line and DC input rail protection.
For engineers reviewing the SMCJ7.0HE3/57T datasheet, SMCJ7.0HE3/57T pinout, SMCJ7.0HE3/57T application, or SMCJ7.0HE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and RoHS-compliant matte tin-plated leads meeting J-STD-002 solderability standards.
Technical Context
The SMCJ7.0HE3/57T operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 7.0 V stand-off rating and clamping within 12.0 V at rated 125 A surge. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns) to transients induced by inductive switching or ESD events.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to 150 °C junction temperature. The device is qualified per AEC-Q101 and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, supporting automotive-grade surface-mount assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown range ensuring predictable turn-on threshold |
| VC @ IPPM | 12.0 V at 125 A - Clamping voltage limits downstream IC stress during 10/1000 µs surge |
| PPPM | 1500 W - Peak transient energy handling capacity under standardized surge waveform |
| ID @ VWM | 200 µA - Low leakage preserves system efficiency in standby and low-power modes |
| TJ max | +150 °C - Enables use in under-hood automotive environments without derating |
| Package | DO-214AB (SMCJ) - Industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads; polarity indicated by cathode band on one end; terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Reverse-blocking / clamping terminal | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive power electronics including engine control units and body modules |
| Glass passivated junction | Stable, repeatable breakdown voltage with minimal parameter drift across temperature and life cycle |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during high-di/dt transients, improving protection margin |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking, reducing manufacturing overhead and risk of popcorning |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance, ensuring long-term interconnect integrity in vibration-prone applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 7.0 V. Use Value: Limits peak rail voltage to ≤12.0 V during 1500 W transients, preventing damage to MCU, CAN transceivers, and voltage regulators. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ESD (IEC 61000-4-2) and inductive kickback from solenoid actuation. Use Value: Sub-1 ns response and 12.0 V clamping preserve signal integrity and prevent ADC saturation or op-amp latch-up. |
| DC Power Supply Input Protection | Telecom Equipment Surge Suppression |
Use Scenario: Front-end protection of AC/DC adapters and PoE-powered devices against AC line surges and hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional TVS installed after input rectifier to protect bulk capacitor and primary-side controller. Use Value: 1500 W PPPM rating handles repetitive 10/1000 µs surges per IEC 61000-4-5 Level 3 without degradation. | Use Scenario: Overvoltage hardening of Ethernet PHY interfaces and base station RF front-end bias lines subjected to lightning-induced surges. IC Role / Device Role / Timing Role: TVS placed on DC bias feed to GaN amplifier stages to limit transient voltage before active components. Use Value: 7.0 V VWM aligns with common 5–12 V bias rails; 12.0 V VC prevents gate oxide breakdown in sensitive RF transistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC7.0 | Lower PPPM (600 W), higher VC (13.3 V at 45 A), same DO-214AB package | Not suitable for high-energy load dump; limited to low-power signal-line protection | Select SMCJ7.0HE3/57T when >1000 W surge capability and tighter clamping are required. |
| 1.5KE7.0A | Through-hole DO-201 package, identical VWM/VC/PPPM specs but no AEC-Q101 qualification | Not recommended for automotive production; acceptable for industrial prototyping only | Choose SMCJ7.0HE3/57T for surface-mount volume production with automotive reliability requirements. |
Compared with SAC7.0 and 1.5KE7.0A, the SMCJ7.0HE3/57T delivers superior surge robustness and automotive-grade qualification in a compact SMT package - critical for space-constrained, high-reliability designs where clamping precision and thermal performance directly impact system uptime.
Availability
SMCJ7.0HE3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC power supply input surge suppression requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for SMCJ7.0HE3/57T 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, efficiency, and application-specific optimization.
The SMCJ7.0HE3/57T belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for automotive and industrial systems demanding AEC-Q101 compliance, low clamping voltage, and repeatable surge immunity under harsh thermal and electrical conditions.
FAQ
What is the clamping voltage of the SMCJ7.0HE3/57T and how is it measured?
The SMCJ7.0HE3/57T 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 surge waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88394) and reflects the actual voltage seen by downstream circuitry during worst-case transient events - critical for validating protection margins in 12 V automotive systems.
Is the SMCJ7.0HE3/57T suitable for automotive applications?
Yes, the SMCJ7.0HE3/57T is explicitly AEC-Q101 qualified and rated for operation from –55 °C to +150 °C. Its DO-214AB package meets MSL Level 1, and the HE3 suffix confirms JESD 201 Class 2 whisker resistance - all essential for under-hood and powertrain applications. The SMCJ7.0HE3/57T is widely deployed in ECUs, body control modules, and ADAS power supplies.
What does the 'HE3' suffix mean in SMCJ7.0HE3/57T?
The 'HE3' suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike the 'E3' suffix (commercial grade), 'HE3' denotes automotive-grade reliability, including enhanced plating adhesion and long-term interconnect stability under thermal cycling and vibration - verified per Vishay's internal qualification protocol.
How does the SMCJ7.0HE3/57T differ from bi-directional variants like SMCJ7.0CA?
The SMCJ7.0HE3/57T is unidirectional, meaning it blocks forward current and clamps only in reverse bias - ideal for DC power rail protection where polarity is fixed. In contrast, SMCJ7.0CA is bi-directional with symmetrical clamping in both directions, suited for AC signal lines or floating buses. Their VWM, VC, and PPPM ratings differ slightly due to structural asymmetry; the SMCJ7.0HE3/57T offers tighter clamping (12.0 V vs. 12.5 V for CA) at equivalent current.
What PCB layout considerations apply to the SMCJ7.0HE3/57T?
Per Vishay's datasheet, the SMCJ7.0HE3/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W PPPM and thermal performance. Short, low-inductance traces to ground are essential to minimize clamping overshoot; avoid vias or narrow traces in the surge current path. The cathode band must align with the protected line, and no silkscreen should obscure the marking.
SMCJ7.0HE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ7.0HE3/57T FAQ
1.How can I place an order for SMCJ7.0HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0HE3/57T 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 SMCJ7.0HE3/57T reliable?
The price and inventory of SMCJ7.0HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.0HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.0HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0HE3/57T?
SMCJ7.0HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0HE3/57T 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 SMCJ7.0HE3/57T?
For technical support, including SMCJ7.0HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0HE3/57T requirements.
6.How does Aetrix verify that SMCJ7.0HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0HE3/57T 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 SMCJ7.0HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.0HE3/57T?
All SMCJ7.0HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0HE3/57T, 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 SMCJ7.0HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.0HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0HE3/57T Tags
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