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Vishay General Semiconductor - Diodes Division SMCJ7.0-E3/57T
- Part No.:
- SMCJ7.0-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0-E3/57T.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,745
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Product details
Overview
SMCJ7.0-E3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of 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 (IPPM), and 1500 W peak pulse power dissipation (PPPM) under 10/1000 µs waveform - ideal for safeguarding MOSFETs and ICs against inductive switching transients in automotive and industrial control modules.
For engineers reviewing the SMCJ7.0-E3/57T datasheet, SMCJ7.0-E3/57T pinout, SMCJ7.0-E3/57T application, or SMCJ7.0-E3/57T equivalent, key selection criteria include verified clamping performance at rated surge current, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), RoHS compliance (E3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ7.0-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional surge suppression capability only when configured as bi-directional variant (e.g., SMCJ7.0CA); this unidirectional part uses cathode band marking and exhibits forward conduction above ~3.5 V at 100 A. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients.
Thermal design relies on RθJL = 15 °C/W (junction-to-lead) and derating above TA = 25 °C per Fig. 2; maximum junction temperature is 150 °C, and it meets MSL Level 1 per J-STD-020 with peak reflow at 260 °C. The device is rated for non-repetitive 8.3 ms half-sine surge up to 200 A (IFSM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 5 V–7 V systems |
| VBR min/max | 7.78 V / 8.60 V at IT = 10 mA - breakdown threshold range ensuring reliable turn-on without premature conduction |
| VC @ IPPM | 12.0 V at 125 A - clamped voltage during 10/1000 µs surge; limits stress on downstream 12 V-tolerant ICs |
| PPPM | 1500 W - peak transient energy absorption capacity; supports IEC 61000-4-5 Level 4 surge immunity testing |
| ID @ VWM | 200 µA max - low leakage preserves battery life in always-on sensor nodes and low-power microcontrollers |
| TJ max | +150 °C - enables operation in under-hood automotive environments and enclosed industrial enclosures |
| RθJA | 75 °C/W - requires minimum 8.0 mm × 8.0 mm copper pad per terminal for full power rating derating |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (reverse-biased during clamping) | Connected to protected line side; conducts only during forward surge events (e.g., reverse polarity misconnection) |
| Cathode | Clamping reference node | Connected to ground or lower-potential rail; defines clamping path for positive transients on protected line |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| Glass passivated junction | Ensures stable breakdown characteristics and long-term stability under repeated surge stress without parameter drift |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; supports high-yield automated assembly |
| Low incremental surge resistance | Minimizes dynamic impedance during transient, reducing VC overshoot and improving protection margin for sensitive logic |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test; suitable for consumer, industrial, and automotive applications with strict material compliance requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V–7 V supply rails in engine control modules (ECMs) from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND to clamp positive surges while blocking reverse conduction. Use Value: Limits voltage excursion to ≤12.0 V during 125 A transients, preventing latch-up or gate oxide damage in MCU and CAN transceivers. |
Use Scenario: Shielding analog input lines of pressure/temperature sensors in factory automation PLCs from ESD and relay coil kickback. IC Role / Device Role / Timing Role: Standoff-mode protector on signal path, activated only during >7.78 V transients to preserve signal integrity during normal operation. Use Value: 200 µA max leakage avoids measurement offset in 24-bit ADC front-ends; 1500 W rating handles repetitive 1 kV/500 A surge events. |
| DC Motor Drive Gate Protection | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding N-channel MOSFET gates in H-bridge motor drivers from inductive flyback spikes during PWM switching. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp referenced to source, suppressing gate-source overvoltage without affecting PWM timing. Use Value: Fast response time (<1 ps) prevents gate oxide rupture; 12.0 V clamping aligns with typical 12 V gate drive rails. |
Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS in series with upstream fuse and MOV, absorbing initial 10/1000 µs energy before secondary regulation. Use Value: 1500 W PPPM supports coordination with 20 kA MOVs; DO-214AB footprint allows compact layout in space-constrained telecom bricks. |
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 (DO-214AC), higher RθJA (110 °C/W) | Suitable for low-energy consumer electronics; insufficient for automotive load dump per ISO 7637-2 Pulse 5a | Select SMCJ7.0-E3/57T when 1500 W surge handling and AEC-Q101 qualification are required. |
| SMCJ7.0AHE3/57T | Identical electrical specs but HE3 suffix indicates AEC-Q101 qualification and JESD 201 Class 2 whisker test | Required for safety-critical automotive subsystems where enhanced metallurgical reliability is mandated | Choose SMCJ7.0AHE3/57T for ASIL-B designs; SMCJ7.0-E3/57T suffices for non-safety automotive and industrial use. |
Compared with SMAJ7.0A-E3/61 and SMCJ7.0AHE3/57T, the SMCJ7.0-E3/57T delivers optimal balance of high-energy surge capability, automotive-grade reliability, and cost-effective commercial qualification - making it the preferred choice for industrial motor drives and Tier-2 automotive ECUs where AEC-Q101 is beneficial but Class 2 whisker testing is not mandatory.
Availability
SMCJ7.0-E3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, DC motor drive gate protection, and telecom power supply input stage applications requiring stable component supply across production lifecycles.
Supply support for SMCJ7.0-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, efficiency, and application-specific optimization.
The SMCJ7.0-E3/57T belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ7.0-E3/57T at its rated peak pulse current?
The SMCJ7.0-E3/57T has a maximum clamping voltage (VC) of 12.0 V at 125 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 11-Dec-12, ensuring predictable overvoltage limiting for downstream components in the protected circuit. The SMCJ7.0-E3/57T maintains this clamping performance across its operational temperature range.
Is the SMCJ7.0-E3/57T qualified for automotive applications?
Yes, the SMCJ7.0-E3/57T is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under Mechanical Data and Ratings sections. This qualification validates its reliability for automotive use cases such as engine control, body electronics, and infotainment power rails. The SMCJ7.0-E3/57T also meets MSL Level 1 and JESD 201 Class 1A whisker testing, supporting robust manufacturing and field operation. Note that SMCJ7.0AHE3/57T offers enhanced AEC-Q101 compliance for safety-critical systems.
What does the "E3/57T" suffix indicate in SMCJ7.0-E3/57T?
The "E3" suffix denotes RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 1A whisker test requirements, while "57T" specifies packaging in 7-inch diameter plastic tape and reel with a base quantity of 850 units. This format ensures compatibility with high-speed pick-and-place equipment and traceable material compliance for industrial and automotive production. The SMCJ7.0-E3/57T is distinct from HE3-suffix variants which add AEC-Q101 Class 2 whisker validation.
How does the SMCJ7.0-E3/57T differ from bi-directional SMCJ7.0CA variants?
The SMCJ7.0-E3/57T is unidirectional, featuring a cathode band marking and conducting only in forward bias - it clamps positive transients to ground while blocking negative excursions. In contrast, SMCJ7.0CA is bi-directional with no polarity marking and clamps transients of either polarity. Electrical differences include doubled ID limit for CA types with VWM ≤10 V and distinct VBR ranges; the SMCJ7.0-E3/57T's VBR is 7.78–8.60 V, whereas SMCJ7.0CA's max VBR is 7.25 V per datasheet note (5).
What thermal derating applies to the SMCJ7.0-E3/57T above 25 °C ambient?
The SMCJ7.0-E3/57T must be derated linearly above TA = 25 °C per Figure 2 in the Vishay datasheet: power dissipation decreases by approximately 8.3 mW/°C, reaching zero at +150 °C junction temperature. For example, at TA = 85 °C with standard 8.0 mm × 8.0 mm copper pads, the usable PPPM drops to ~900 W. Thermal design must account for RθJA = 75 °C/W and RθJL = 15 °C/W; the SMCJ7.0-E3/57T cannot sustain full 1500 W rating without adequate PCB copper area.
SMCJ7.0-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:
- 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 (SMCJ)
SMCJ7.0-E3/57T FAQ
1.How can I place an order for SMCJ7.0-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0-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 SMCJ7.0-E3/57T reliable?
The price and inventory of SMCJ7.0-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 SMCJ7.0-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ7.0-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0-E3/57T?
SMCJ7.0-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0-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 SMCJ7.0-E3/57T?
For technical support, including SMCJ7.0-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0-E3/57T requirements.
6.How does Aetrix verify that SMCJ7.0-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0-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 SMCJ7.0-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ7.0-E3/57T?
All SMCJ7.0-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0-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 SMCJ7.0-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ7.0-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0-E3/57T Tags
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