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Vishay General Semiconductor - Diodes Division SMCJ7.0AHE3_A/H
- Part No.:
- SMCJ7.0AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.0AHE3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,922
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Product details
Overview
SMCJ7.0AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. 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), 125 A peak pulse current (IPPM), and clamps to ≤12.0 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor interface protection.
For engineers reviewing the SMCJ7.0AHE3_A/H datasheet, SMCJ7.0AHE3_A/H pinout, SMCJ7.0AHE3_A/H application, or SMCJ7.0AHE3_A/H equivalent, key selection criteria include clamping voltage under 12.0 V at 125 A, unidirectional polarity with cathode band marking, SMC package thermal resistance (RθJA = 75 °C/W), and compliance with AEC-Q101 for automotive-grade reliability.
Technical Context
The SMCJ7.0AHE3_A/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown range (7.78–8.60 V). Its low incremental surge resistance ensures stable clamping during fast transients (response time <1 ns), and it meets J-STD-020 MSL Level 1 with peak reflow temperature up to 260 °C.
It is rated for continuous operation from –55 °C to +150 °C junction temperature, dissipates 6.5 W on infinite heatsink at TA = 50 °C, and exhibits a positive temperature coefficient of VBR (+0.065 %/°C), enabling predictable voltage drift across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 7.78 V / 8.60 V at IT = 10 mA - Confirmed breakdown threshold range; ensures reliable triggering above nominal supply. |
| VC @ IPPM | ≤12.0 V at IPPM = 125 A - Clamping voltage under full 1500 W surge; limits downstream IC stress during ESD/LD events. |
| PPPM | 1500 W (10/1000 μs waveform) - Peak transient energy handling capacity; supports ISO 7637-2 Pulse 1 & 2a in automotive systems. |
| ID @ VWM | 200 μA max - Low leakage at stand-off voltage; minimizes quiescent power loss in battery-powered circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive environments. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient on standard 8 mm × 8 mm copper pads; informs PCB thermal design. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by molded band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines conduction direction in unidirectional mode. |
| Cathode | Reverse voltage sensing / Clamping node | Connected to protected line (e.g., 5 V rail or sensor output); conducts when line voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| Glass passivated junction | Enhances long-term reliability and moisture resistance; critical for high-humidity under-hood deployments. |
| MSL Level 1 rating | Enables single-pass reflow without baking; compatible with standard SMT assembly processes up to 260 °C peak. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during surge events; protects 3.3 V and 5 V logic interfaces without additional series impedance. |
| 1500 W peak pulse power | Withstands repetitive load-dump transients (e.g., ISO 7637-2 Pulse 5a) on 12 V systems without degradation. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines (e.g., 0–5 V throttle position sensor signals) from inductive switching noise and battery load dump. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input, referenced to system ground. Use Value: Clamps transients to ≤12.0 V while maintaining sub-200 μA leakage at 7.0 V, preserving signal integrity and preventing ADC saturation. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers against field-wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminal and common rail to shunt induced spikes before optocoupler input stage. Use Value: Absorbs 1500 W pulses without failure, enabling compliance with IEC 61000-4-5 Level 3 (2 kV/12 Ω) immunity testing. |
| Consumer Power Adapter Input | Telecom Line Interface |
|
Use Scenario: Secondary-side DC bus protection in USB-C PD adapters exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional clamp on +5 V/9 V/15 V output rail, cathode to rail, anode to ground. Use Value: Responds in <1 ns to ESD (IEC 61000-4-2 ±15 kV contact), limiting voltage excursion below IC absolute maximum ratings. |
Use Scenario: Overvoltage suppression on RS-485 data lines in base station backhaul equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to local ground plane, placed adjacent to connector. Use Value: Maintains signal integrity with ≤12.0 V clamping while supporting >1 Mbps data rates due to low junction capacitance (<100 pF at 0 V). |
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, higher RθJA = 110 °C/W), same VWM/VBR range. | Suitable for space-constrained consumer electronics but not automotive under-hood due to lower surge rating and thermal performance. | Select when board area is critical and surge energy is limited to <400 W (e.g., USB port protection). |
| SMCJ7.0CAHE3_A/H | Bidirectional variant; identical VWM (7.0 V), symmetric VBR (±7.78–8.60 V), same PPPM and package. | Required for AC-coupled or floating signal lines (e.g., Ethernet PHY, audio differential pairs) where polarity reversal occurs. | Choose only when bidirectional clamping is mandated; unidirectional SMCJ7.0AHE3_A/H offers lower leakage and simpler grounding. |
Compared with SMAJ7.0AHE3/A, the SMCJ7.0AHE3_A/H delivers 275 % higher surge power handling and superior thermal dissipation for sustained automotive operation; versus SMCJ7.0CAHE3_A/H, it provides lower reverse leakage and simplified ground referencing for DC-biased rails.
Availability
SMCJ7.0AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter outputs, and telecom line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ7.0AHE3_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 automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness against load dump, ESD, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of the SMCJ7.0AHE3_A/H at its rated peak pulse current?
The SMCJ7.0AHE3_A/H clamps to a maximum of 12.0 V when subjected to its rated peak pulse current of 125 A (10/1000 μs waveform). This value is measured under standardized test conditions with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, ensuring repeatable thermal performance and accurate comparison across designs using the SMCJ7.0AHE3_A/H.
Is the SMCJ7.0AHE3_A/H suitable for automotive applications?
Yes, the SMCJ7.0AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets stringent stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance, making it appropriate for engine control, body electronics, and ADAS sensor protection where the SMCJ7.0AHE3_A/H must operate reliably from –55 °C to +150 °C.
How does the SMCJ7.0AHE3_A/H differ from bidirectional TVS diodes like SMCJ7.0CAHE3_A/H?
The SMCJ7.0AHE3_A/H is unidirectional and features a cathode band marking; it conducts only when the cathode is more positive than the anode. In contrast, SMCJ7.0CAHE3_A/H is bidirectional with no polarity marking and clamps symmetrically in both directions. The SMCJ7.0AHE3_A/H exhibits lower reverse leakage (200 μA vs. 400 μA for the CA version at VWM), making it preferable for DC-coupled rails where leakage impacts power budget.
What is the thermal resistance of the SMCJ7.0AHE3_A/H, and how does it affect PCB layout?
The SMCJ7.0AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures during repeated surges, PCB layout must allocate adequate copper area and avoid thermal isolation; reducing pad size increases RθJA and risks thermal runaway during high-duty-cycle transients involving the SMCJ7.0AHE3_A/H.
Does the SMCJ7.0AHE3_A/H meet RoHS and halogen-free requirements?
Yes, the SMCJ7.0AHE3_A/H carries the "HE3" suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It is not halogen-free - that designation applies to "HM3" variants. The SMCJ7.0AHE3_A/H uses lead-free matte tin plating and complies with JESD 201 Class 2 whisker resistance, satisfying environmental and reliability mandates for commercial and automotive programs deploying the SMCJ7.0AHE3_A/H.
SMCJ7.0AHE3_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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ7.0AHE3_A/H FAQ
1.How can I place an order for SMCJ7.0AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.0AHE3_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 SMCJ7.0AHE3_A/H reliable?
The price and inventory of SMCJ7.0AHE3_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 SMCJ7.0AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ7.0AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.0AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.0AHE3_A/H?
SMCJ7.0AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.0AHE3_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 SMCJ7.0AHE3_A/H?
For technical support, including SMCJ7.0AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.0AHE3_A/H requirements.
6.How does Aetrix verify that SMCJ7.0AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ7.0AHE3_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 SMCJ7.0AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ7.0AHE3_A/H?
All SMCJ7.0AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.0AHE3_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 SMCJ7.0AHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ7.0AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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