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Vishay General Semiconductor - Diodes Division SMCJ64CAHE3/9AT
- Part No.:
- SMCJ64CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CAHE3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,783
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Product details
Overview
SMCJ64CAHE3/9AT 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 64 V standoff voltage (VWM), 103 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 μs waveform), commonly deployed on automotive power rails and industrial sensor interfaces.
For engineers reviewing the SMCJ64CAHE3/9AT datasheet, SMCJ64CAHE3/9AT pinout, SMCJ64CAHE3/9AT application, or SMCJ64CAHE3/9AT equivalent, key selection criteria include bidirectional surge capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT assembly on 8 mm × 8 mm copper pads.
Technical Context
The SMCJ64CAHE3/9AT operates as a voltage-clamping device using an avalanche breakdown mechanism, responding within picoseconds to transients induced by inductive switching or ESD events. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-sensitive layout constraints.
Thermally, it exhibits RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), enabling reliable operation up to TJ = 150 °C when mounted per recommended pad layout. It meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 71.1 V / 78.6 V at IT = 1 mA - Confirmed breakdown threshold range under standardized test conditions |
| VC | 103 V at IPPM = 14.6 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 1500 W - Peak surge power handling capacity, defining transient energy absorption limit |
| TJ max | +150 °C - Maximum junction temperature, supporting under-hood automotive deployment |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.13 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ64CAHE3/9AT uses the standard SMC (DO-214AB) package: two-terminal, bidirectional device with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | One terminal of symmetrical avalanche junction; conducts during positive surges relative to cathode reference |
| Cathode | Transient current entry (negative half-cycle) | Second terminal of symmetrical junction; conducts during negative surges - functionally identical to anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive 12 V systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring long-term field reliability |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
| MSL Level 1, 260 °C reflow | Supports lead-free reflow soldering without moisture sensitivity limitations or baking requirements |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping element placed at board-level input filter stage, shunting surge energy to ground before DC-DC regulators. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤103 V, preventing latch-up or oxide rupture. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors exposed to motor-driven EMI in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pairs (e.g., RS-485, CAN FD stubs) to clamp common-mode surges. Use Value: Maintains signal integrity by clamping transients within 1 ns while adding <1 pF parasitic capacitance at 0 V bias. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary rails in outdoor telecom cabinets subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary protection layer after gas discharge tube (GDT), absorbing residual energy and suppressing follow-on oscillations. Use Value: Delivers precise 103 V clamping with <5 % tolerance, ensuring coordination with upstream GDT sparkover and downstream IC absolute maximum ratings. | Use Scenario: Guarding microcontroller GPIOs and gate drivers connected to brushed DC motor commutation circuits in smart home appliances. IC Role / Device Role / Timing Role: Localized TVS mounted directly at motor connector interface to intercept inductive kickback before PCB trace inductance amplifies voltage spikes. Use Value: Absorbs 1500 W pulses without degradation, enabling >100,000 cycle lifetime under repeated 24 V motor switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC64CA-E3/9AT | Same VWM/VC, but lower PPPM = 600 W and non-AEC-Q101 rated | Suitable for commercial-grade consumer electronics where automotive qualification is unnecessary | Select when cost sensitivity outweighs automotive reliability requirements and surge energy is limited to ≤600 W |
| 1.5KE64CA | Through-hole DO-201 package, same VWM/VC, PPPM = 1500 W, but higher RθJA = 100 °C/W | Used in legacy designs or prototyping where SMT assembly is unavailable | Choose only if board space allows axial-leaded mounting and thermal management permits higher junction rise |
Compared with SAC64CA-E3/9AT and 1.5KE64CA, the SMCJ64CAHE3/9AT uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and 1500 W surge capability-making it the preferred choice for production automotive and industrial SMT platforms requiring validated long-term reliability.
Availability
SMCJ64CAHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, telecom line cards, and consumer appliance motor drive circuits requiring stable component supply and full traceability.
Supply support for SMCJ64CAHE3/9AT 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 high-reliability, high-efficiency solutions.
The SMCJ series was engineered specifically for demanding transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance across temperature and lifetime while meeting stringent AEC-Q101 and RoHS requirements.
FAQ
What is the clamping voltage of SMCJ64CAHE3/9AT at its rated peak pulse current?
The SMCJ64CAHE3/9AT has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 14.6 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88394, ensuring predictable voltage limiting during surge events. The SMCJ64CAHE3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCJ64CAHE3/9AT suitable for automotive applications?
Yes, SMCJ64CAHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and ESD-to ensure reliability in under-hood environments. The SMCJ64CAHE3/9AT is commonly deployed in body control modules, infotainment power supplies, and ADAS camera interfaces where sustained 150 °C operation and surge immunity are mandatory.
How does the bidirectional configuration of SMCJ64CAHE3/9AT affect circuit design?
The bidirectional configuration of SMCJ64CAHE3/9AT eliminates polarity marking and enables symmetric clamping on AC-coupled or floating lines-such as RS-485 buses or transformer-isolated power rails-without requiring external diode pairing. Unlike unidirectional TVS diodes, the SMCJ64CAHE3/9AT provides identical VBR, VC, and IPPM characteristics in both directions, simplifying layout and reducing BOM count. No orientation check is needed during placement.
What is the thermal resistance of SMCJ64CAHE3/9AT, and how does it impact PCB layout?
The SMCJ64CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under worst-case 6.5 W steady-state dissipation, designers must allocate sufficient copper area and avoid thermal bottlenecks. The SMCJ64CAHE3/9AT's RθJL = 15 °C/W also supports localized heat sinking via wide traces connected to internal ground planes.
Does SMCJ64CAHE3/9AT require derating at elevated ambient temperatures?
Yes, SMCJ64CAHE3/9AT requires derating above TA = 25 °C, per Figure 2 in Vishay Document 88394. Its peak pulse power (PPPM) decreases linearly to zero at TA = 150 °C. For example, at TA = 85 °C, PPPM is reduced to approximately 1050 W. Designers must apply this derating curve when sizing protection for high-temperature enclosures. The SMCJ64CAHE3/9AT's specified TJ max of 150 °C remains unchanged regardless of ambient conditions.
SMCJ64CAHE3/9AT 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
SMCJ64CAHE3/9AT FAQ
1.How can I place an order for SMCJ64CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CAHE3/9AT 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 SMCJ64CAHE3/9AT reliable?
The price and inventory of SMCJ64CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ64CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CAHE3/9AT?
SMCJ64CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CAHE3/9AT 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 SMCJ64CAHE3/9AT?
For technical support, including SMCJ64CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ64CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ64CAHE3/9AT 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 SMCJ64CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ64CAHE3/9AT?
All SMCJ64CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CAHE3/9AT, 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 SMCJ64CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ64CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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