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Vishay General Semiconductor - Diodes Division SMCJ7.0AHM3/H
- Part No.:
- SMCJ7.0AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0AHM3/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,038
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Product details
Overview
SMCJ7.0AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 12.0 V maximum clamping voltage at 125 A peak pulse current, 7.0 V stand-off voltage, and 7.78–8.60 V breakdown voltage range at 10 mA test current - used for protecting MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMCJ7.0AHM3/H datasheet, SMCJ7.0AHM3/H pinout, SMCJ7.0AHM3/H application, or SMCJ7.0AHM3/H equivalent, this page delivers verified electrical specs, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world protection use cases - all confirmed from Vishay's official 88394 document revision 09-Jan-2024.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient overvoltages induced by inductive switching or ESD events. Its 1500 W peak pulse power rating (10/1000 µs waveform) and low incremental surge resistance enable robust clamping without thermal runaway under repetitive surges.
The SMCJ7.0AHM3/H features a cathode-band polarity marking, meets MSL level 1 per J-STD-020 (peak reflow 260 °C), and is rated for -55 °C to +150 °C operating junction temperature. Its 75 °C/W junction-to-ambient thermal resistance assumes mounting on 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum reverse stand-off voltage before significant leakage; defines safe operating window below clamping threshold |
| VBR min/max | 7.78 V / 8.60 V at IT = 10 mA - Confirmed breakdown range ensures reliable avalanche initiation during transients |
| VC @ IPPM | 12.0 V at 125 A - Clamping voltage under full 1500 W surge; limits downstream component stress |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 µs waveform; validates surge immunity in harsh environments |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended pad layout; informs heatsinking and power derating needs |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial enclosures |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant - Meets automotive reliability and environmental requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected circuit ground or low-side return path; conducts during forward surge |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., 12 V rail); initiates breakdown when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges without external series impedance |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics applications requiring extended temperature cycling and humidity exposure |
| Low RθJA (75 °C/W) | Allows sustained operation at elevated ambient temperatures without forced cooling in space-constrained modules |
| Glass passivated junction | Provides stable VBR tolerance and long-term reliability under thermal cycling and high-humidity conditions |
| Halogen-free & RoHS | Meets EU ELV and China RoHS requirements for end-of-life recyclability and manufacturing safety |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in junction boxes, battery management systems, and lighting control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between input rail and ground to shunt surge energy before reaching DC-DC converters or microcontrollers. Use Value: Limits voltage to ≤12.0 V during 125 A surges, preventing latch-up or gate oxide damage in downstream SiC MOSFET drivers and CAN transceivers. | Use Scenario: Safeguarding analog front-end inputs of pressure, temperature, and position sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Standoff-clamp protector on sensor signal lines (e.g., 4–20 mA loop or 0–5 V output), referenced to local ground. Use Value: Maintains signal integrity by clamping ESD and inductive kickback to <12.0 V while adding only 1.5 pF typical junction capacitance at zero bias. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home hubs and set-top boxes subjected to lightning-induced surges on DC output lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed across regulated 5 V or 12 V outputs to clamp overshoot from regulator fault or cable disconnect events. Use Value: Responds in <1 ns to limit transient duration and amplitude, preserving USB-PD controller ICs and PMICs with 16 V absolute maximum ratings. | Use Scenario: Protection of -48 V DC telecom power feeds feeding remote radio units and baseband processing boards. IC Role / Device Role / Timing Role: Reverse-biased TVS on negative rail relative to system ground, absorbing positive-going transients coupled onto the feed line. Use Value: Withstands 1500 W pulses without degradation, meeting Telcordia GR-1089-CORE Level 3 surge immunity requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-M3/57T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VBR range | Suitable for lower-energy transients (e.g., IEC 61000-4-2 ESD only); not rated for ISO 7637-2 Pulse 5a | Select when board space is constrained and surge threat level is limited to ±8 kV contact ESD or 100 A surges |
| SMCJ7.0AHE3_A/H | Same electrical specs and package, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified) | Approved for non-automotive industrial and consumer use; lacks automotive qualification documentation and halogen-free certification | Choose for cost-sensitive commercial designs where AEC-Q101 and halogen-free compliance are not required |
Compared with SMCJ7.0AHE3_A/H, the SMCJ7.0AHM3/H adds halogen-free construction and AEC-Q101 qualification without sacrificing clamping performance; versus SMBJ7.0A-M3/57T, it delivers 2.5× higher surge power handling in the same footprint family but requires larger PCB pad area for thermal management.
Availability
SMCJ7.0AHM3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, consumer power adapter input stages, and telecom DC power feeds requiring stable component supply with full traceability and lifecycle support.
Supply support for SMCJ7.0AHM3/H 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 SMCJ series was developed for high-energy transient suppression in automotive, industrial, and telecom infrastructure, targeting robustness against load dump, ESD, and lightning-induced surges in surface-mount designs.
FAQ
What is the maximum clamping voltage of the SMCJ7.0AHM3/H under full-rated surge current?
The SMCJ7.0AHM3/H has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current (IPPM) of 125 A using the standard 10/1000 µs waveform. This value is measured per Vishay document 88394 and defines the upper voltage limit imposed on protected circuits during worst-case transients. The SMCJ7.0AHM3/H maintains this clamping performance across its qualified temperature range (-55 °C to +150 °C) with minimal drift.
Is the SMCJ7.0AHM3/H qualified for automotive applications?
Yes, the SMCJ7.0AHM3/H is AEC-Q101 qualified, as explicitly stated in Vishay's document 88394 revision 09-Jan-2024. The "HM3" suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. This qualification covers stress tests including temperature cycling, humidity bias HAST, and mechanical shock - validating suitability for under-hood and chassis-mounted automotive electronics. The SMCJ7.0AHM3/H is approved for use in power distribution modules, body control units, and ADAS sensor interfaces.
What does the "H" in SMCJ7.0AHM3/H indicate in the ordering code?
The final "H" in SMCJ7.0AHM3/H specifies the preferred package code for 7-inch diameter plastic tape and reel delivery, with a base quantity of 850 units per reel. This packaging format is optimized for high-speed automated placement in SMT assembly lines. The "HM3" portion confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified material content, while "SMCJ7.0A" identifies the electrical variant. The full part number SMCJ7.0AHM3/H is orderable and tracked separately from reel variants ending in "I" (13-inch reel).
How does the thermal resistance of the SMCJ7.0AHM3/H affect PCB layout?
The SMCJ7.0AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must allocate sufficient copper area and avoid thermal isolation. Reducing pad size or using thin FR-4 increases RθJA, risking thermal runaway during high-duty-cycle transients. The SMCJ7.0AHM3/H datasheet mandates this pad layout for all published ratings.
Can the SMCJ7.0AHM3/H be used in bidirectional configurations?
No, the SMCJ7.0AHM3/H is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and confirmed by its cathode-band polarity marking. Bidirectional operation requires the "CA" variant (e.g., SMCJ7.0CA), which has symmetrical breakdown in both directions and no polarity marking. Using the SMCJ7.0AHM3/H in reverse-biased configurations risks permanent damage above its 7.0 V stand-off voltage. For AC-coupled or floating signal lines, select the CA version or pair unidirectional devices back-to-back.
SMCJ7.0AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ7.0AHM3/H FAQ
1.How can I place an order for SMCJ7.0AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0AHM3/H 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 SMCJ7.0AHM3/H reliable?
The price and inventory of SMCJ7.0AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.0AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ7.0AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0AHM3/H?
SMCJ7.0AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0AHM3/H 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 SMCJ7.0AHM3/H?
For technical support, including SMCJ7.0AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0AHM3/H requirements.
6.How does Aetrix verify that SMCJ7.0AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0AHM3/H 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 SMCJ7.0AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ7.0AHM3/H?
All SMCJ7.0AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0AHM3/H, 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 SMCJ7.0AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ7.0AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0AHM3/H Tags
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