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Vishay General Semiconductor - Diodes Division SMCJ7.0AHM3/I
- Part No.:
- SMCJ7.0AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0AHM3/I.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,002
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Product details
Overview
SMCJ7.0AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 µs), 12.0 V clamping voltage (VC) at 125 A, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the SMCJ7.0AHM3/I datasheet, SMCJ7.0AHM3/I pinout, SMCJ7.0AHM3/I application, or SMCJ7.0AHM3/I equivalent, this device is selected for robust overvoltage protection in automotive power rails, industrial sensor interfaces, and DC input stages where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are required.
Technical Context
The SMCJ7.0AHM3/I employs a glass-passivated silicon avalanche diode structure optimized for high-energy transient suppression. Its unidirectional polarity enables integration into DC-biased circuits with cathode-to-rail configuration, and its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 µs surges up to 125 A.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL Level 1 per J-STD-020, supports lead-free reflow (peak 260 °C), and is halogen-free and RoHS-compliant under HM3 suffix designation - confirming suitability for automotive-grade production environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.0 V - Maximum continuous reverse working voltage before significant leakage; sets operating margin below breakdown. |
| VBR (Breakdown Voltage) | 7.78–8.60 V at 10 mA - Confirmed avalanche initiation range; ensures reliable triggering above normal operating voltage. |
| VC (Clamping Voltage) | 12.0 V at 125 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; defines protection level. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized 10/1000 µs waveform; determines survivability of IEC 61000-4-5 surges. |
| IPPM (Peak Pulse Current) | 125 A - Maximum non-repetitive surge current supported; directly tied to PCB pad thermal design (8.0 mm × 8.0 mm Cu). |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures without derating. |
| Leakage (ID) | 200 µA max at VWM - Low reverse leakage preserves system efficiency in battery-powered or high-impedance signal paths. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in unidirectional configuration | Connected to protected line (e.g., +12 V rail); clamps to cathode when transient exceeds VBR. |
| 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 applications including engine control units and ADAS power supplies per stress test requirements. |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and JEDEC J-STD-20D; supports green manufacturing and end-of-life compliance. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs such as MCUs or CAN transceivers during surge events. |
| Fast response time (<1 ns) | Activates before most semiconductor damage thresholds are exceeded, protecting MOSFET gates and precision analog front-ends. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without dry-pack or baking; simplifies manufacturing logistics and reduces handling cost. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input to clamp surges before regulation stage. Use Value: Clamps to 12.0 V at 125 A, limiting stress on downstream 3.3 V/5 V regulators and ensuring ASIL-B functional safety compliance. | Use Scenario: Shielding 4–20 mA current loop transmitters from ESD and field-induced surges in factory automation. IC Role / Device Role / Timing Role: TVS mounted across loop terminals to shunt transients while preserving signal integrity and loop accuracy. Use Value: 200 µA max leakage at 7.0 V avoids loading error in high-impedance sensing nodes; low VC prevents saturation of op-amp drivers. |
| DC Input Stage Surge Suppression | Telecom Power Supply Protection |
Use Scenario: Guarding AC/DC adapter outputs against lightning-induced surges entering via DC jack in PoE-powered devices. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC output, upstream of filtering and isolation barriers. Use Value: 1500 W rating handles IEC 61000-4-5 Level 4 (4 kV) surges; SMC package allows compact placement near connector entry point. | Use Scenario: Safeguarding -48 V telecom rectifier outputs from switching transients and accidental short-circuit recovery spikes. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-rail to clamp negative-going transients on negative supply lines. Use Value: Specified VBR tolerance (±6%) and tight VC ensure predictable clamping behavior across temperature; HM3 suffix supports long-lifecycle deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, lower thermal mass), same VWM/VBR range | Suitable for space-constrained consumer electronics but not automotive or industrial surge classes requiring >1 kW | Select SMCJ7.0AHM3/I when 1500 W surge handling and AEC-Q101 qualification are mandatory. |
| SMCJ7.0A-M3/57T | Same electrical specs and SMC package, but uses M3 suffix (halogen-free/RoHS) without AEC-Q101 qualification | Acceptable for commercial/industrial use where automotive reliability validation is not required | Choose SMCJ7.0AHM3/I for automotive programs needing documented AEC-Q101 conformance and traceable HM3 sourcing. |
Compared with SMAJ7.0AHE3/A and SMCJ7.0A-M3/57T, the SMCJ7.0AHM3/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, and halogen-free construction - making it the only option among the three validated for under-hood automotive deployment with full compliance documentation.
Availability
SMCJ7.0AHM3/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC input stage surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMCJ7.0AHM3/I 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated before IC-level damage occurs.
FAQ
What is the clamping voltage of the SMCJ7.0AHM3/I at its rated peak pulse current?
The SMCJ7.0AHM3/I has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 125 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and reflects the actual voltage imposed on the protected circuit during worst-case surge events - critical for verifying compatibility with downstream IC absolute maximum ratings.
Is the SMCJ7.0AHM3/I qualified for automotive applications?
Yes, the SMCJ7.0AHM3/I carries the HM3 suffix, indicating it is halogen-free, RoHS-compliant, and AEC-Q101 qualified. This certification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance - confirming suitability for automotive power distribution modules, body control units, and ADAS subsystems per ISO/TS 16949 requirements.
What does the "I" in SMCJ7.0AHM3/I signify in the ordering code?
The "I" in SMCJ7.0AHM3/I denotes the packaging format: 13-inch diameter plastic tape and reel, containing 3500 units per reel. This delivery mode supports high-volume automated SMT assembly and aligns with industry-standard feeder configurations used in Tier 1 automotive electronics manufacturing lines.
How does the SMCJ7.0AHM3/I differ from the SMCJ7.0A-E3/57T variant?
The SMCJ7.0AHM3/I differs from SMCJ7.0A-E3/57T in three key aspects: (1) HM3 suffix confirms halogen-free construction versus E3's standard RoHS compliance; (2) HM3 includes AEC-Q101 qualification, whereas E3 is commercial-grade only; (3) the "I" packaging delivers 3500 units on 13″ reel, while "57T" provides 850 units on 7″ reel. All electrical parameters remain identical.
What is the thermal resistance from junction to ambient for the SMCJ7.0AHM3/I?
The SMCJ7.0AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended pad layout (0.31″ × 0.31″ copper pads per terminal). This value assumes still air conditions and is essential for calculating safe power dissipation limits in thermally constrained enclosures or stacked PCB assemblies.
SMCJ7.0AHM3/I 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/I FAQ
1.How can I place an order for SMCJ7.0AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0AHM3/I 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/I reliable?
The price and inventory of SMCJ7.0AHM3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMCJ7.0AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0AHM3/I?
SMCJ7.0AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0AHM3/I 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/I?
For technical support, including SMCJ7.0AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0AHM3/I requirements.
6.How does Aetrix verify that SMCJ7.0AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0AHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of SMCJ7.0AHM3/I?
All SMCJ7.0AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0AHM3/I, 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/I part is unused and in its original packaging.
Return procedure for SMCJ7.0AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0AHM3/I Tags
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