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Vishay General Semiconductor - Diodes Division SMCJ11CA-M3/57T
- Part No.:
- SMCJ11CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CA-M3/57T.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,350
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Product details
Overview
SMCJ11CA-M3/57T 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 signal or power lines. It features a 11 V standoff voltage (VWM), 18.2 V maximum clamping voltage (VC) at 82.4 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the SMCJ11CA-M3/57T datasheet, SMCJ11CA-M3/57T pinout, SMCJ11CA-M3/57T application, or SMCJ11CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, halogen-free RoHS-compliant construction (M3 suffix), 1500 W surge handling, and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AB footprint.
Technical Context
The SMCJ11CA-M3/57T operates as a silicon avalanche diode with symmetrical breakdown in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Designed for transient suppression per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump), it delivers sub-nanosecond response time and low incremental surge resistance - critical for safeguarding sensitive analog front-ends and digital I/O against inductive switching spikes and lightning-induced surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for protected circuitry. |
| VBR min/max | 12.2 V / 13.5 V at 1 mA - Verified breakdown threshold range ensures consistent turn-on across production lots. |
| VC @ IPPM | 18.2 V at 82.4 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 1500 W - Peak pulse power handling capacity under standardized surge waveform; enables robust system-level EMC compliance. |
| TJ max | +150 °C - Maximum junction temperature rating supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement for rated power dissipation. |
| RoHS Status | Halogen-free, RoHS-compliant (M3 suffix) - Meets environmental compliance requirements for global electronics manufacturing. |
Pinout & Package
SMCJ11CA-M3/57T uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount case with no marking for bidirectional devices. Thermal performance requires mounting on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Acts as cathode during positive surge; conducts bidirectionally - no fixed polarity assignment. |
| Cathode | Transient current exit (either polarity) | Acts as anode during negative surge; symmetric conduction path eliminates orientation dependency in layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or floating nodes without polarity constraints. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without external series impedance. |
| Low clamping ratio (VC/VWM = 1.65) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V and 5 V logic interfaces. |
| MSL Level 1, 260 °C peak | Permits compatibility with standard lead-free reflow profiles without pre-baking or special handling. |
| Halogen-free, RoHS-compliant (M3) | Fulfills strict environmental mandates for automotive OEMs and EU-based industrial equipment manufacturers. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to ECU inputs against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching precision ADC front-end. Use Value: Maintains signal integrity by limiting transient voltage to ≤18.2 V, preventing latch-up or gate oxide damage in 5 V-tolerant microcontrollers. | Use Scenario: Safeguarding CANH/CANL differential pair in factory automation controllers exposed to motor drive noise and relay switching. IC Role / Device Role / Timing Role: Paired SMCJ11CA-M3/57T devices (one per line) suppress common-mode surges while preserving <100 pF junction capacitance for 1 Mbps CAN timing compliance. Use Value: Enables reliable communication under ISO 11898-2 EMC stress tests without adding series resistance or degrading edge rates. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Surge Protection |
Use Scenario: Secondary-side DC output protection in wall adapters subjected to mains-borne surges and capacitor discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS placed across +VOUT/GND to clamp fast-rising transients from rectifier ringback or transformer coupling. Use Value: Prevents overvoltage failure of downstream DC-DC converters and USB-PD controllers rated for 12 V input. | Use Scenario: Primary protection for ADSL/VDSL line interface ICs in residential gateways facing lightning-induced longitudinal surges on twisted-pair lines. IC Role / Device Role / Timing Role: First-stage TVS mounted at RJ-11 jack to absorb >1500 W surge energy before gas discharge tube or PTC limiter activates. Use Value: Reduces let-through voltage to <20 V, protecting low-voltage line drivers and echo cancellers compliant with GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC11CA-13-F | Same VWM (11 V) and VC (18.2 V), but lower PPPM (600 W); SOD-123FL package (smaller, lower thermal mass). | Limited to lower-energy transients (IEC 61000-4-2 ±8 kV contact only); unsuitable for ISO 7637-2 load dump. | Select when board space is constrained and surge threat level is limited to ESD/EFT only. |
| 1.5KE11CA | Same electrical specs but axial-leaded DO-15 package; higher RθJA (100 °C/W vs. 75 °C/W) and no MSL Level 1 rating. | Requires through-hole assembly; not compatible with automated SMT lines or high-reliability reflow processes. | Choose only for prototyping or legacy through-hole designs where SMT is unavailable. |
Compared with SAC11CA-13-F and 1.5KE11CA, the SMCJ11CA-M3/57T provides superior surge robustness (1500 W), SMT manufacturability, and automotive-grade thermal reliability - making it the preferred choice for production-grade industrial and automotive electronics requiring IPC-A-610 Class 2/3 compliance.
Availability
SMCJ11CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer power adapters, and telecom DSL line cards requiring stable component supply across multi-year production cycles.
Supply support for SMCJ11CA-M3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series was developed to deliver high-power, surface-mount TVS protection for automotive, industrial, and telecom applications where compact size, repeatable clamping, and AEC-Q101 qualification are essential.
FAQ
What is the clamping voltage of the SMCJ11CA-M3/57T under full-rated surge current?
The SMCJ11CA-M3/57T clamps to a maximum of 18.2 V when subjected to its rated 82.4 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value is guaranteed across temperature and process variation per Vishay's datasheet Document Number 88394, ensuring predictable overvoltage limiting for protected circuits. The SMCJ11CA-M3/57T maintains this clamping performance without degradation over its specified lifetime when operated within derated conditions above 25 °C ambient.
Is the SMCJ11CA-M3/57T suitable for automotive applications?
Yes, the SMCJ11CA-M3/57T is halogen-free and RoHS-compliant (M3 suffix), and the base SMCJ11CA family is AEC-Q101 qualified when ordered with HE3 or HM3 suffixes. While the -M3/57T variant itself is commercial-grade, its electrical specs, thermal robustness (TJ max = +150 °C), and construction meet core automotive environmental requirements. For certified automotive use, specify SMCJ11CAHM3_X (e.g., SMCJ11CAHM3_A/H) - the SMCJ11CA-M3/57T remains suitable for non-safety-critical automotive subsystems where full AEC-Q101 documentation is not mandated.
How does the bidirectional design of the SMCJ11CA-M3/57T affect PCB layout?
The SMCJ11CA-M3/57T has no polarity marking and functions identically in either orientation, eliminating orientation-dependent routing errors and simplifying automated placement. Unlike unidirectional TVS diodes, it requires no attention to cathode band alignment - reducing assembly defects and enabling symmetric layout around differential pairs or AC-coupled lines. This symmetry also allows shared footprint reuse across multiple bidirectional protection points in the same design, improving layout efficiency. The SMCJ11CA-M3/57T thus lowers design risk and manufacturing cost in high-volume SMT production.
What is the thermal resistance of the SMCJ11CA-M3/57T, and how does it impact power handling?
The SMCJ11CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31″ × 0.31″ copper pads per terminal. This value determines steady-state power dissipation limits: at 25 °C ambient, its 6.5 W rated power corresponds to ~488 °C junction rise - but since the device is intended for transient (not continuous) operation, thermal design focuses on short-duration surge energy absorption. The SMCJ11CA-M3/57T relies on low thermal mass and high peak power rating rather than sustained cooling, making pad layout critical only for repetitive surge scenarios.
Can the SMCJ11CA-M3/57T replace a unidirectional TVS like SMCJ11A-M3/57T in an existing design?
No - the SMCJ11CA-M3/57T is bidirectional and lacks polarity, whereas the SMCJ11A-M3/57T is unidirectional with defined anode/cathode. Substituting them without circuit review risks incorrect clamping behavior: the unidirectional part blocks reverse voltage up to VBR, while the bidirectional version conducts in both directions once VBR is exceeded. If the original design relies on DC blocking or rectification, replacing SMCJ11A-M3/57T with SMCJ11CA-M3/57T may cause leakage or malfunction. Always verify signal polarity and bias conditions before interchange. The SMCJ11CA-M3/57T must be used only where true bidirectional protection is required.
SMCJ11CA-M3/57T 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- 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)
SMCJ11CA-M3/57T FAQ
1.How can I place an order for SMCJ11CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CA-M3/57T 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 SMCJ11CA-M3/57T reliable?
The price and inventory of SMCJ11CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ11CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CA-M3/57T?
SMCJ11CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CA-M3/57T 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 SMCJ11CA-M3/57T?
For technical support, including SMCJ11CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CA-M3/57T requirements.
6.How does Aetrix verify that SMCJ11CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ11CA-M3/57T 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 SMCJ11CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ11CA-M3/57T?
All SMCJ11CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CA-M3/57T, 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 SMCJ11CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ11CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11CA-M3/57T Tags
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