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Vishay General Semiconductor - Diodes Division SMCJ64CA-E3/9AT
- Part No.:
- SMCJ64CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CA-E3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,213
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Product details
Overview
SMCJ64CA-E3/9AT 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 power and signal lines. It features a 64 V stand-off voltage (VWM), 103 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCJ64CA-E3/9AT datasheet, SMCJ64CA-E3/9AT pinout, SMCJ64CA-E3/9AT application, or SMCJ64CA-E3/9AT equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, JEDEC-compliant SMC package dimensions, thermal resistance (RθJA = 75 °C/W), and AEC-Q101-qualified alternatives for automotive-grade surge protection design.
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 characteristics and low leakage (<1.0 μA at VWM).
The device responds within picoseconds to transient events, clamping voltages to ≤103 V under 14.6 A 10/1000 μs surge, while maintaining low incremental surge resistance and meeting MSL Level 1 per J-STD-020 at 260 °C peak reflow temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown Voltage) | 71.1–78.6 V at 1 mA - Confirmed minimum/maximum breakdown threshold defining clamping onset |
| VC (Clamping Voltage) | 103 V at IPPM = 14.6 A - Peak voltage seen by protected circuit during full-rated surge event |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy handling capacity under standardized 10/1000 μs waveform |
| ID (Reverse Leakage) | ≤1.0 μA at 64 V - Ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max. | +150 °C - Enables operation in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient, critical for PCB pad layout and derating above 25 °C |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, RoHS-compliant matte tin-plated leads, UL 94 V-0 molding compound. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H). No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current in either direction |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., RS-485), and floating sensors without polarity constraints |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 8 mm × 8 mm copper pads |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| AEC-Q101 qualified option | HE3/HM3 variants available for automotive applications requiring validated reliability and extended temperature operation |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking; compatible with automated placement and high-volume manufacturing |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or supply rail to limit transient excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs during 12 V system load dump events (ISO 7637-2 Pulse 5a). |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from solenoid coils and motor drives. IC Role / Device Role / Timing Role: Primary surge suppression element installed at connector entry point, shunting >1 kV transients before reaching optocoupler or microcontroller GPIO. Use Value: Maintains functional safety integrity by limiting clamped voltage to 103 V - well below 120 V isolation barrier ratings of industrial isolators. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY magnetics and PoE controller inputs from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) to handle residual fast-rising transients (IEC 61000-4-5 combination wave). Use Value: Achieves <1 ns response time and sub-110 V clamping to preserve Ethernet PHY ESD immunity margin (±8 kV contact per IEC 61000-4-2). |
Use Scenario: Input-stage surge protection in AC-DC adapters for smart home hubs and IoT gateways subjected to mains-borne transients. IC Role / Device Role / Timing Role: First-line defense across bulk capacitor terminals to absorb repetitive line-switching spikes and capacitor discharge energy. Use Value: Withstands ≥1000 surges at rated PPPM without parameter shift, ensuring long-term reliability in unattended consumer equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC64CA-TB-E3 | Same VWM (64 V), lower PPPM (600 W), smaller SMA package (DO-214AC), RθJA = 110 °C/W | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without parallel staging | Select when board space is constrained and surge threat level is Class B (IEC 61000-4-5 Level 2) |
| SMCJ64CAHM3/9AT | Identical electrical specs; halogen-free, AEC-Q101 qualified, same SMC package and thermal performance | Required for automotive production programs mandating halogen-free materials and automotive qualification | Choose for Tier 1 automotive designs where compliance documentation and PPAP support are mandatory |
Compared with SMCJ64CA-E3/9AT, SAC64CA-TB-E3 trades surge robustness for compactness, while SMCJ64CAHM3/9AT delivers identical protection with enhanced material compliance and automotive qualification - making it the direct upgrade path for automotive deployments.
Availability
SMCJ64CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, telecom line shielding, and consumer power adapter input stages requiring stable component supply and consistent surge performance across production batches.
Supply support for SMCJ64CA-E3/9AT 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, precision, 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 ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of SMCJ64CA-E3/9AT at its rated peak pulse current?
The SMCJ64CA-E3/9AT clamps to a maximum of 103 V when subjected to its rated 14.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88394. The clamping voltage directly determines the maximum overvoltage stress imposed on downstream circuitry during surge events, making it a critical parameter for interface IC selection.
Is SMCJ64CA-E3/9AT suitable for automotive applications?
SMCJ64CA-E3/9AT is RoHS-compliant and commercial-grade; it is not AEC-Q101 qualified. For automotive use, Vishay offers the SMCJ64CAHE3/9AT (RoHS + AEC-Q101) and SMCJ64CAHM3/9AT (halogen-free + AEC-Q101) variants. The SMCJ64CA-E3/9AT itself may be used in non-safety-critical aftermarket or infotainment subsystems where qualification is not mandated, but design validation per ISO 7637-2 remains the engineer's responsibility.
How does the bidirectional nature of SMCJ64CA-E3/9AT affect its PCB layout?
Because SMCJ64CA-E3/9AT is bidirectional, it has no cathode band marking and can be placed without orientation constraints - simplifying automated assembly and eliminating polarity-related soldering errors. Layout requires symmetric 8.0 mm × 8.0 mm copper pads per terminal (per datasheet fig. 2) to achieve rated 1500 W PPPM and maintain RθJA ≤75 °C/W. No ground plane isolation or directional routing is needed.
What is the maximum operating temperature for SMCJ64CA-E3/9AT?
The SMCJ64CA-E3/9AT has a specified operating junction temperature range of -55 °C to +150 °C. At ambient temperatures above 25 °C, derating applies: power dissipation decreases linearly per Figure 2 in the datasheet, reaching zero at approximately 132 °C ambient when mounted on recommended pads. This makes SMCJ64CA-E3/9AT suitable for under-hood automotive locations and industrial enclosures with elevated ambient conditions.
Can SMCJ64CA-E3/9AT replace SMCJ64A-E3/9AT in a design?
No - SMCJ64CA-E3/9AT is bidirectional, while SMCJ64A-E3/9AT is unidirectional. Substituting them without circuit review risks failure: the unidirectional part conducts forward current during negative transients, potentially damaging upstream circuitry. The CA variant's symmetrical VBR (71.1–78.6 V) and absence of polarity marking make it incompatible with designs relying on DC bias or unidirectional clamping paths. Always verify signal polarity and transient direction before interchange.
SMCJ64CA-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ64CA-E3/9AT FAQ
1.How can I place an order for SMCJ64CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CA-E3/9AT 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 SMCJ64CA-E3/9AT reliable?
The price and inventory of SMCJ64CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ64CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CA-E3/9AT?
SMCJ64CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CA-E3/9AT 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 SMCJ64CA-E3/9AT?
For technical support, including SMCJ64CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ64CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ64CA-E3/9AT 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 SMCJ64CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ64CA-E3/9AT?
All SMCJ64CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CA-E3/9AT, 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 SMCJ64CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ64CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64CA-E3/9AT Tags
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