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Vishay General Semiconductor - Diodes Division SMCJ7.0-E3/9AT
- Part No.:
- SMCJ7.0-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0-E3/9AT.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,378
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Product details
Overview
SMCJ7.0-E3/9AT 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 (10/1000 µs waveform), making it suitable for automotive power supply input protection and industrial sensor interface surge suppression.
For engineers reviewing the SMCJ7.0-E3/9AT datasheet, SMCJ7.0-E3/9AT pinout, SMCJ7.0-E3/9AT application, or SMCJ7.0-E3/9AT equivalent, key selection criteria include verified unidirectional polarity, AEC-Q101 qualification, 1500 W surge capability, low 12.0 V clamping at rated IPPM, and RoHS-compliant matte tin-plated leads meeting J-STD-002 solderability standards.
Technical Context
The SMCJ7.0-E3/9AT operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to transients. Its breakdown voltage (VBR) is specified at 7.78–8.60 V with 10 mA test current, ensuring precise triggering above nominal 7.0 V rail voltage while maintaining low leakage (<1000 µA at VWM).
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to +150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 1A whisker testing, confirming suitability for high-reliability automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected circuit's normal DC operating range. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed avalanche onset window ensures predictable turn-on without premature leakage or delayed clamping. |
| VC @ IPPM | 12.0 V at 125 A - Clamped voltage during full 1500 W transient; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 1500 W (10/1000 µs) - Peak surge energy handling capacity; enables protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| IPPM | 125 A - Peak current supported at rated clamping voltage; validates compatibility with 12 AWG wiring and typical automotive load-dump profiles. |
| TJ max | +150 °C - Maximum junction temperature rating; supports under-hood automotive placement and industrial environments with minimal derating. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with molded UL 94 V-0 compound. Cathode indicated by band on one end; anode is unmarked end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 mechanical reliability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connects to protected line; conducts surge current to ground when VWM exceeded; polarity-critical for unidirectional operation. |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control units and ADAS power supplies. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime; prevents moisture ingress and metallization degradation in humid environments. |
| 1500 W peak pulse power | Supports single-event surge immunity per ISO 16750-2 and IEC 61000-4-5; eliminates need for cascaded protection stages in 12 V/24 V systems. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., inductive switch-off), improving margin for 5 V or 3.3 V logic interfaces. |
| MSL Level 1, 260 °C peak reflow | Enables standard lead-free SMT assembly without pre-baking; compatible with high-volume automated placement on PCBs with mixed-technology components. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple 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 voltage to 12.0 V during 125 A transients, preserving integrity of 16 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V output lines to absorb ESD and switching noise. Use Value: Prevents latch-up in op-amps and ADC inputs by clamping transients within 1 ns, with <1000 µA leakage at 7.0 V ensuring signal accuracy. |
| Consumer Power Adapter Interface | Telecom DC Power Feeds |
Use Scenario: Safeguarding USB-C PD controller ICs and buck regulators in wall adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-side TVS on AC-DC rectified output to suppress differential-mode transients before isolation stage. Use Value: Withstands 1500 W pulses without degradation, enabling compliance with UL 62368-1 surge immunity requirements. |
Use Scenario: Protecting PoE-powered network switches against induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Unidirectional TVS on each DC feed pair to clamp common-mode transients relative to local ground. Use Value: Maintains 7.0 V stand-off while clamping to 12.0 V, preventing damage to IEEE 802.3af/at PD interface controllers. |
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-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (12.5 V at 32.4 A) | Restricted to lower-energy transients (e.g., ESD-only); unsuitable for load dump or ISO 7637-2 Pulse 5a | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD or low-energy switching noise. |
| SMCJ7.0AHE3/9AT | Identical electrical specs but AEC-Q101 qualified (HE3 suffix); same DO-214AB package and marking code GDM | Approved for automotive safety-critical modules requiring PPAP documentation and extended reliability validation | Choose for Tier 1 automotive designs where AEC-Q101 certification is mandatory, not optional. |
Compared with SMCJ7.0-E3/9AT, SMAJ7.0A-E3/61T offers footprint reduction at the cost of 73 % lower surge capacity, while SMCJ7.0AHE3/9AT provides identical protection performance with formal automotive qualification-making the latter ideal for production vehicles and the former sufficient for consumer-grade surge filtering.
Availability
SMCJ7.0-E3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feed applications requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMCJ7.0-E3/9AT 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, emphasizing AEC-Q101 qualification, low clamping voltage, and robust thermal performance in surface-mount packages.
FAQ
What is the polarity configuration of the SMCJ7.0-E3/9AT?
The SMCJ7.0-E3/9AT is a unidirectional TVS diode, with cathode identified by a band on one end of the DO-214AB package. This polarity must be observed during PCB layout-reverse connection will prevent proper clamping during overvoltage events. The device does not conduct in forward bias beyond its 3.5 V forward voltage at 100 A, as specified for unidirectional types.
Does the SMCJ7.0-E3/9AT meet automotive qualification standards?
The SMCJ7.0-E3/9AT carries the E3 suffix, indicating RoHS compliance and commercial-grade qualification. While it shares the DO-214AB package and core electrical specs with AEC-Q101-qualified variants like SMCJ7.0AHE3/9AT, the SMCJ7.0-E3/9AT itself is not AEC-Q101 certified. For automotive safety-critical applications, specify the HE3-suffixed version.
What is the maximum clamping voltage of the SMCJ7.0-E3/9AT under surge conditions?
The SMCJ7.0-E3/9AT has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 125 A using a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the highest voltage that downstream circuitry will experience during a full 1500 W transient event.
Can the SMCJ7.0-E3/9AT be used in bi-directional protection circuits?
No-the SMCJ7.0-E3/9AT is strictly unidirectional and lacks symmetrical breakdown characteristics. For bi-directional applications (e.g., AC lines or data buses), Vishay specifies the CA-suffixed variant SMCJ7.0CA, which exhibits matched breakdown in both directions and no polarity marking. Using SMCJ7.0-E3/9AT in bi-directional roles risks failure during reverse-polarity transients.
What is the thermal resistance specification for the SMCJ7.0-E3/9AT?
The SMCJ7.0-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W, measured on the standard 0.31" × 0.31" copper pad layout. These values enable accurate thermal modeling for power dissipation in continuous operation and confirm suitability for high-temperature ambient environments up to +150 °C junction temperature.
SMCJ7.0-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SMCJ7.0-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0-E3/9AT 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-E3/9AT reliable?
The price and inventory of SMCJ7.0-E3/9AT 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-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ7.0-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0-E3/9AT?
SMCJ7.0-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0-E3/9AT 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-E3/9AT?
For technical support, including SMCJ7.0-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0-E3/9AT requirements.
6.How does Aetrix verify that SMCJ7.0-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ7.0-E3/9AT?
All SMCJ7.0-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ7.0-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0-E3/9AT Tags
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