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Vishay General Semiconductor - Diodes Division SMCJ64CA-M3/9AT
- Part No.:
- SMCJ64CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CA-M3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,655
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Product details
Overview
SMCJ64CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 64 V standoff voltage, 1500 W peak pulse power rating, and 103 V clamping voltage at 14.6 A peak pulse current. It protects sensitive ICs, MOSFETs, and sensor signal lines in automotive, industrial, and telecom systems against inductive switching transients and lightning-induced surges.
For engineers reviewing the SMCJ64CA-M3/9AT datasheet, SMCJ64CA-M3/9AT pinout, SMCJ64CA-M3/9AT application, or SMCJ64CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W 10/1000 µs surge rating, 64 V working voltage, and halogen-free RoHS-compliant M3 termination - critical for automotive-grade ESD/surge resilience and PCB assembly compatibility.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional CA construction, enabling suppression of positive and negative polarity transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive surge stress.
Designed for surface-mount automation, it meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance requirements. The SMC (DO-214AB) package provides robust thermal dissipation with RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 64 V - maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 71.1–78.6 V at 1 mA - guaranteed conduction threshold for transient suppression |
| Clamping Voltage (VC) | 103 V at 14.6 A (10/1000 µs) - peak voltage seen by protected circuit during rated surge |
| Peak Pulse Power (PPPM) | 1500 W - maximum non-repetitive surge energy absorption capability |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design |
| Operating Temperature | −55 °C to +150 °C - qualified for under-hood automotive and industrial ambient conditions |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix), JESD 201 Class 2 whisker resistant |
Pinout & Package
SMCJ64CA-M3/9AT uses the standard SMC (DO-214AB) surface-mount package: two-terminal, unmarked bidirectional device with no polarity identification band. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals; bidirectional clamping allows connection across any two points needing surge protection without orientation concern |
| Case (body) | Thermal and mechanical interface | Plastic body transfers heat to PCB copper pads; requires 0.31" × 0.31" (8.0 mm × 8.0 mm) minimum copper area per terminal per datasheet fig. 2 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 1500 W 10/1000 µs surge rating | Withstands high-energy transients common in automotive load-dump and industrial motor switching |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility without dry-pack handling |
| Halogen-free M3 termination | Meets environmental compliance requirements for automotive and industrial end-equipment |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from ISO 7637-2 pulse 1/2a/5a transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended signal lines upstream of input conditioning circuitry. Use Value: Limits transient voltage to ≤103 V while absorbing 1500 W surges, preventing latch-up or damage to downstream op-amps and ADCs. | Use Scenario: Shielding digital and analog I/O channels on programmable logic controllers exposed to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Primary front-end surge clamp on field-side connectors before isolation barriers or level-shifting circuits. Use Value: Maintains signal integrity during 1 kV/500 A surge events per IEC 61000-4-5, reducing system downtime and field failure rates. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Safeguarding Ethernet PHY interfaces, RS-485 transceivers, or DSL line drivers against lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Secondary-level TVS after gas discharge tube (GDT) primary protection, providing fast sub-nanosecond response. Use Value: Clamps induced voltages within 103 V at 14.6 A, preserving transceiver functionality during multi-kV surge events. | Use Scenario: Adding robust ESD and surge immunity to USB-C, DC barrel jack, or auxiliary power inputs in smart home hubs and audio devices. IC Role / Device Role / Timing Role: Final-stage overvoltage protector between connector and DC-DC converter input or LDO regulator. Use Value: Absorbs 1500 W surges without degradation, eliminating need for redundant protection stages and saving board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-M3/86A | Unidirectional; lower 400 W PPPM; SMA package (smaller footprint, higher RθJA) | Limited to DC-biased lines; insufficient for bidirectional AC or floating signals | Select only when polarity is fixed and surge energy is ≤400 W |
| SMCJ64CA-E3/9AT | Same electrical specs and package; RoHS-compliant but not halogen-free (E3 vs. M3) | Acceptable for commercial-grade designs where halogen-free requirement is absent | Use when halogen-free certification is not mandated by end-equipment standards |
Compared with SMCJ64CA-M3/9AT, SMAJ64A-M3/86A offers reduced surge capacity and unidirectional operation, limiting its use to simpler DC rails; SMCJ64CA-E3/9AT matches all performance parameters but lacks halogen-free compliance, making it unsuitable for automotive OEM specifications requiring M3 material categorization.
Availability
SMCJ64CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply and full AEC-Q101-aligned surge resilience.
Supply support for SMCJ64CA-M3/9AT 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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The SMCJ series is engineered specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications demanding 1500 W surge immunity and extended temperature operation.
FAQ
What is the clamping voltage of SMCJ64CA-M3/9AT at its rated peak pulse current?
The SMCJ64CA-M3/9AT has a maximum clamping voltage (VC) of 103 V at 14.6 A peak pulse current using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. The SMCJ64CA-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCJ64CA-M3/9AT suitable for automotive applications?
Yes, SMCJ64CA-M3/9AT is halogen-free, RoHS-compliant, and AEC-Q101 qualified when ordered with HE3 or HM3 suffixes. While the M3 suffix confirms halogen-free and RoHS compliance, AEC-Q101 qualification requires the HM3_X variant (e.g., SMCJ64CA-HM3_A/I). The SMCJ64CA-M3/9AT itself meets all electrical and mechanical requirements for automotive use but must be verified against the specific qualification code required by the OEM.
How does the bidirectional design of SMCJ64CA-M3/9AT affect its circuit placement?
The bidirectional design of SMCJ64CA-M3/9AT eliminates polarity constraints, allowing it to be placed across any two nodes requiring symmetrical surge suppression - such as differential signal pairs, AC-coupled lines, or floating grounds. Unlike unidirectional TVS diodes, the SMCJ64CA-M3/9AT has no cathode marking and functions identically regardless of orientation, simplifying layout and reducing assembly errors.
What thermal pad layout is required for SMCJ64CA-M3/9AT to achieve rated power dissipation?
To achieve full 1500 W peak pulse power rating and maintain junction temperature within limits, SMCJ64CA-M3/9AT requires mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Vishay document 88394. Smaller pads cause thermal derating per Figure 2; inadequate copper area increases RθJA and risks thermal runaway during repetitive surges. The SMCJ64CA-M3/9AT thermal performance is validated only with this minimum pad size.
Can SMCJ64CA-M3/9AT replace SMCJ64A-M3/9AT in an existing design?
No - SMCJ64CA-M3/9AT is bidirectional, while SMCJ64A-M3/9AT is unidirectional. Substituting them without circuit review risks failure: the unidirectional part conducts forward current during negative transients, potentially damaging downstream components. The SMCJ64CA-M3/9AT must only replace other CA-suffixed variants. Always verify signal polarity, biasing, and clamping symmetry before interchanging SMCJ64CA-M3/9AT with any unidirectional TVS.
SMCJ64CA-M3/9AT 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 (SMC)
SMCJ64CA-M3/9AT FAQ
1.How can I place an order for SMCJ64CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CA-M3/9AT 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-M3/9AT reliable?
The price and inventory of SMCJ64CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ64CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CA-M3/9AT?
SMCJ64CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CA-M3/9AT 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-M3/9AT?
For technical support, including SMCJ64CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ64CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ64CA-M3/9AT 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-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ64CA-M3/9AT?
All SMCJ64CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CA-M3/9AT, 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-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ64CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64CA-M3/9AT Tags
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