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Vishay General Semiconductor - Diodes Division SMCJ7.0CAHE3/9AT
- Part No.:
- SMCJ7.0CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0CAHE3/9AT.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,971
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Product details
Overview
SMCJ7.0CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. 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 - deployed in automotive sensor signal lines, industrial I/O ports, and DC power rails.
For engineers reviewing the SMCJ7.0CAHE3/9AT datasheet, SMCJ7.0CAHE3/9AT pinout, SMCJ7.0CAHE3/9AT application, or SMCJ7.0CAHE3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients: when reverse (or forward, in bidirectional mode) voltage exceeds its breakdown threshold (VBR min = 7.78 V, max = 8.60 V at IT = 10 mA), it switches to low-impedance conduction within <1 ps, diverting surge current away from protected circuitry. Its glass-passivated junction ensures stable leakage (<1000 μA at VWM) and repeatable clamping performance across -55 °C to +150 °C operating range.
The SMCJ7.0CAHE3/9AT is rated for 1500 W peak pulse power under standardized 10/1000 μs waveform, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W - enabling effective heat dissipation without external heatsinking in typical PCB layouts. Its AEC-Q101 qualification confirms suitability for automotive environments including engine control units and ADAS sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping initiates; defines safe signal integrity margin for 5–7 V logic or sensor supply rails. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - guaranteed breakdown window ensuring consistent turn-on across production lots and temperature. |
| VC @ IPPM | 12.0 V at 125 A - clamping voltage limits downstream IC stress during 1500 W surge events; critical for protecting 12 V tolerant inputs. |
| PPPM | 1500 W - peak transient energy handling capacity under 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance with proper layout. |
| ID @ VWM | ≤1000 μA - low leakage preserves battery life and signal fidelity in always-on circuits like automotive CAN nodes or IoT sensors. |
| TJ max. | +150 °C - enables operation in under-hood automotive locations and industrial enclosures without derating. |
| Package | SMC (DO-214AB) - surface-mount package with 8.0 mm × 8.0 mm thermal pad footprint; compatible with J-STD-020 MSL level 1 reflow profiles. |
Pinout & Package
SMCJ7.0CAHE3/9AT uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount outline with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no cathode/anode marking; both terminals are functionally identical for transient suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Current Input/Output | Either terminal accepts surge current from either polarity; symmetric bidirectional clamping eliminates orientation constraints during placement. |
| Terminal 2 | Transient Current Input/Output | Paired with Terminal 1 to complete low-inductance surge path; requires equal-area 8.0 mm × 8.0 mm copper pads per datasheet fig. 2 for rated PPPM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for ECU, infotainment, and ADAS subsystems. |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime; prevents parameter drift due to moisture ingress or contamination in harsh environments. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt transients - maintains tight clamping margin even during fast-rising ESD or inductive switch-off spikes. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates baking requirements and reduces manufacturing cost. |
| UL 497B recognized (QVGQ2) | Meets Underwriters Laboratories requirements for telecom and industrial protectors - simplifies system-level safety certification. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bays exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient voltage to ≤12.0 V during 100 V/50 ms load dump events. Use Value: Prevents latch-up or gate oxide damage in 12 V rail-connected op-amps and ADC front-ends while maintaining signal accuracy below 7.0 V. |
Use Scenario: Shielding 24 V digital input modules in factory automation systems from relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Fast-response (sub-ps) voltage limiter shunting >100 A surges away from optocoupler input stages. Use Value: Eliminates false triggering and extends mean time between failures (MTBF) in noisy industrial environments with frequent switching noise. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Safeguarding RS-485 transceivers connected to outdoor cabling subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level bidirectional clamp on differential bus lines, coordinated with secondary GDT or MOV stages. Use Value: Limits common-mode voltage excursion to <15 V during 1 kV/0.5 J surges - preserving transceiver integrity per IEC 61000-4-5. |
Use Scenario: Secondary-side overvoltage suppression on 5 V USB-C PD adapter outputs prone to feedback loop failure. IC Role / Device Role / Timing Role: Last-line defense against 12 V+ excursions caused by optocoupler or TL431 failure in isolated flyback designs. Use Value: Clamps output to 12.0 V within nanoseconds, preventing connected devices from receiving destructive overvoltage before shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC7.0 | Same VWM (7.0 V) and VC (12.0 V), but lower PPPM (600 W); SOD-123FL package (smaller footprint, higher RθJA). | Targeted at space-constrained consumer electronics where full 1500 W surge immunity is not required. | Select SAC7.0 only if board area is critical and surge threat level is limited to IEC 61000-4-2 ESD (±15 kV air) rather than IEC 61000-4-5 surges. |
| SMCJ7.0CAHM3/9AT | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free RoHS compliance (HM3 vs HE3 suffix). | No functional difference; selected when end-product environmental compliance mandates halogen-free materials. | Choose SMCJ7.0CAHM3/9AT when fulfilling EU RoHS Annex II halogen restrictions or customer green material declarations. |
Compared with SAC7.0, SMCJ7.0CAHE3/9AT delivers 2.5× higher surge power handling and superior thermal performance via SMC package; versus SMCJ7.0CAHM3/9AT, it offers identical protection capability with standard RoHS compliance - making it optimal for cost-sensitive automotive and industrial programs not requiring halogen-free certification.
Availability
SMCJ7.0CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter outputs requiring stable component supply, AEC-Q101 traceability, and 1500 W transient immunity.
Supply support for SMCJ7.0CAHE3/9AT 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure - engineered for rapid response, stable clamping, and long-term stability under thermal and electrical stress.
FAQ
What is the breakdown voltage range of the SMCJ7.0CAHE3/9AT?
The SMCJ7.0CAHE3/9AT has a guaranteed breakdown voltage (VBR) range of 7.78 V to 8.60 V at 10 mA test current, measured per ANSI/IEEE C62.35. This bidirectional specification applies equally in both directions due to its CA suffix design, and is validated across the full -55 °C to +150 °C operating junction temperature range. The SMCJ7.0CAHE3/9AT's tight VBR tolerance ensures predictable clamping onset in precision protection circuits.
Is the SMCJ7.0CAHE3/9AT suitable for automotive applications?
Yes, the SMCJ7.0CAHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant, AEC-Q101-qualified construction. It meets requirements for engine control units, body electronics, and ADAS sensor interfaces - including thermal cycling, humidity bias, and mechanical shock testing. The SMCJ7.0CAHE3/9AT's 1500 W surge rating supports ISO 7637-2 Pulse 5a/b load dump protection when implemented with proper PCB layout.
How does the clamping voltage of the SMCJ7.0CAHE3/9AT compare to its stand-off voltage?
The SMCJ7.0CAHE3/9AT has a stand-off voltage (VWM) of 7.0 V and a maximum clamping voltage (VC) of 12.0 V at 125 A peak pulse current. This 5.0 V differential represents the worst-case voltage overshoot seen by protected circuitry during a full-rated 1500 W transient. The ratio VC/VWM ≈ 1.71 reflects optimized junction design for low incremental resistance - critical for safeguarding 12 V-tolerant ICs without excessive headroom loss.
What package type does the SMCJ7.0CAHE3/9AT use, and what are its mounting requirements?
The SMCJ7.0CAHE3/9AT uses the SMC (DO-214AB) surface-mount package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Per Vishay document 88394, it requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for full 1500 W rating. The SMCJ7.0CAHE3/9AT is MSL Level 1 and supports peak reflow temperatures up to 260 °C without preconditioning.
Does the SMCJ7.0CAHE3/9AT have UL recognition?
Yes, the SMCJ7.0CAHE3/9AT carries Underwriters Laboratories recognition under file number E136766 for both unidirectional and bidirectional configurations, classified per UL 497B for signal and power line protectors. This certification validates its suitability in telecom infrastructure, industrial control panels, and other safety-critical systems requiring third-party verification of transient suppression performance and flammability (UL 94 V-0 molding compound).
SMCJ7.0CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ7.0CAHE3/9AT FAQ
1.How can I place an order for SMCJ7.0CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0CAHE3/9AT 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 SMCJ7.0CAHE3/9AT reliable?
The price and inventory of SMCJ7.0CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.0CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ7.0CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0CAHE3/9AT?
SMCJ7.0CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0CAHE3/9AT 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 SMCJ7.0CAHE3/9AT?
For technical support, including SMCJ7.0CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ7.0CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0CAHE3/9AT 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 SMCJ7.0CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ7.0CAHE3/9AT?
All SMCJ7.0CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0CAHE3/9AT, 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 SMCJ7.0CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ7.0CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.0CAHE3/9AT Tags
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