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Vishay General Semiconductor - Diodes Division SMCJ7.0CAHM3_A/H
- Part No.:
- SMCJ7.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,569
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Product details
Overview
SMCJ7.0CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power 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 (PPPM) with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMCJ7.0CAHM3_A/H datasheet, SMCJ7.0CAHM3_A/H pinout, SMCJ7.0CAHM3_A/H application, or SMCJ7.0CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the SMC package supports high surge current handling with minimal parasitic inductance.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications - confirmed by ordering suffix HM3 and revision code A/H.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum reverse stand-off voltage before clamping begins; defines safe operating range for protected circuitry |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA test current - guaranteed breakdown threshold ensuring predictable turn-on during transients |
| VC @ IPPM | 12.0 V at 125 A - clamped voltage seen by downstream components during 10/1000 µs surge, limiting stress on ICs/MOSFETs |
| PPPM | 1500 W - peak pulse power handling capacity under standardized 10/1000 µs waveform, critical for lightning/ESD immunity |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; determines derating needed above 25 °C ambient |
| TJ max. | +150 °C - maximum allowable junction temperature; sets upper limit for continuous power dissipation and surge repetition rate |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint for effective heat spreading |
Pinout & Package
SMCJ7.0CAHM3_A/H uses the SMC (DO-214AB) package - a two-terminal surface-mount case with no polarity marking for bidirectional operation. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current from either direction during overvoltage events |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or return rail during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without external polarity management or dual-device implementation |
| AEC-Q101 qualified | Validated reliability for automotive environments including engine control units, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and eliminates corrosive halogen emissions during PCB reflow or end-of-life processing |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system-level EMI resilience |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, simplifying manufacturing logistics and reducing moisture-related defects |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or supply rail to divert transient energy before it reaches sensitive front-end amplifiers or microcontrollers. Use Value: Limits clamped voltage to ≤12.0 V during 125 A surges, preserving signal integrity and preventing latch-up or gate oxide damage in downstream ASICs. | Use Scenario: Safeguarding PLC digital input modules and analog acquisition channels against ESD and field-wiring induced surges in factory automation equipment. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between channel and common reference, absorbing repetitive transients up to 1500 W without degradation. Use Value: Maintains ≤1.0 µA leakage at 7.0 V VWM, avoiding false triggering or measurement drift in high-impedance sensing circuits. |
| Telecom Line Interface | Consumer Power Supply Input |
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from lightning-induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Primary surge suppression element mounted at connector entry point, shunting energy to chassis ground before entering isolation transformers or magnetics. Use Value: Delivers 12.0 V clamping at full 1500 W rating, compatible with ITU-T K.20/K.21 immunity requirements for outdoor telecom infrastructure. | Use Scenario: Protecting AC-DC adapter primary-side rectifier outputs and DC-DC converter inputs from mains-borne transients in smart home devices. IC Role / Device Role / Timing Role: Secondary-stage TVS placed after bulk capacitance to suppress residual ringing and fast-edge noise coupled through transformer leakage inductance. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), supporting robustness against repeated brownout/recovery events in unregulated supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0CAHE3_A/H | Lower PPPM (400 W), smaller SMA package, higher RθJA (110 °C/W), same VWM/VC specs | Suitable for space-constrained consumer electronics where 1500 W surge margin is not required | Select when board area is limited and peak surge energy is below 400 W; verify thermal design with higher junction temperature rise |
| SMCJ7.0CAHE3_A/H | Same electrical specs and package, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified) | Applicable in non-automotive industrial or computing applications where halogen-free and automotive qualification are not mandated | Choose for cost-sensitive designs requiring identical performance without AEC-Q101 or halogen-free certification |
Compared with SMCJ7.0CAHM3_A/H, SMAJ7.0CAHE3_A/H trades surge capacity and thermal performance for compact size, while SMCJ7.0CAHE3_A/H retains full electrical equivalence but omits halogen-free materials and automotive qualification - making the HM3 variant uniquely suited for safety-critical automotive deployments.
Availability
SMCJ7.0CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMCJ7.0CAHM3_A/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 is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and communications systems where robustness and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ7.0CAHM3_A/H?
The "CA" suffix denotes a bidirectional configuration - meaning SMCJ7.0CAHM3_A/H provides symmetrical clamping in both polarities, unlike unidirectional variants (e.g., SMCJ7.0AHM3_A/H). This enables use on AC-coupled lines, differential buses, or any application where voltage transients may occur with either polarity relative to ground.
Is SMCJ7.0CAHM3_A/H qualified for automotive applications?
Yes, SMCJ7.0CAHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix and documentation in Vishay's SMCJ5.0A–SMCJ188CA datasheet (Rev. 09-Jan-2024). This qualification validates its reliability under automotive temperature cycling, humidity, mechanical shock, and lifetime surge stress conditions.
What is the maximum clamping voltage of SMCJ7.0CAHM3_A/H and under what test condition?
The maximum clamping voltage of SMCJ7.0CAHM3_A/H is 12.0 V, measured at 125 A peak pulse current (IPPM) using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the worst-case voltage imposed on protected circuitry during surge events.
How does the SMC (DO-214AB) package of SMCJ7.0CAHM3_A/H support thermal management?
The SMC package of SMCJ7.0CAHM3_A/H features a large thermal pad footprint (0.305" × 0.320") designed for mounting on 8.0 mm × 8.0 mm copper pads per terminal. With a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, this layout enables effective heat dissipation during repetitive surge events and supports stable operation up to +150 °C junction temperature.
What is the significance of the "_A/H" revision code in SMCJ7.0CAHM3_A/H?
"_A/H" indicates the revision level and packaging format: "A" is the document revision code per Vishay's datasheet control, and "H" specifies the preferred package code - 7-inch plastic tape-and-reel with 850 units per reel. This coding ensures traceability to the exact manufacturing lot, material composition (halogen-free), and assembly process used for SMCJ7.0CAHM3_A/H.
SMCJ7.0CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ7.0CAHM3_A/H FAQ
1.How can I place an order for SMCJ7.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0CAHM3_A/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 SMCJ7.0CAHM3_A/H reliable?
The price and inventory of SMCJ7.0CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.0CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ7.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0CAHM3_A/H?
SMCJ7.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0CAHM3_A/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 SMCJ7.0CAHM3_A/H?
For technical support, including SMCJ7.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ7.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0CAHM3_A/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 SMCJ7.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ7.0CAHM3_A/H?
All SMCJ7.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0CAHM3_A/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 SMCJ7.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ7.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0CAHM3_A/H Tags
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