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Vishay General Semiconductor - Diodes Division SMCJ11CA-E3/57T
- Part No.:
- SMCJ11CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CA-E3/57T.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,805
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Product details
Overview
SMCJ11CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 µs waveform, 18.2 V maximum clamping voltage at 82.4 A peak pulse current, and 11 V standoff voltage - deployed for protecting MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ11CA-E3/57T datasheet, SMCJ11CA-E3/57T pinout, SMCJ11CA-E3/57T application, or SMCJ11CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, 11 V working voltage, 18.2 V clamping voltage at rated current, and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage range 12.2–13.5 V at 1 mA test current and ±11 V standoff voltage. Its low incremental surge resistance and fast response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients without degradation under repetitive stress.
Thermal design is supported by RθJA = 75 °C/W and RθJL = 15 °C/W, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The device uses glass-passivated junction construction and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients without failure in automotive load-dump or industrial switching events |
| Standoff Voltage (VWM) | 11 V - blocks normal operating voltages up to 11 V while remaining non-conductive |
| Max Clamping Voltage (VC) | 18.2 V at 82.4 A - limits transient voltage seen by protected circuitry to ≤18.2 V during full-rated surge |
| Breakdown Voltage (VBR) | 12.2–13.5 V at 1 mA - defines precise conduction onset threshold for bidirectional protection |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - surface-mount footprint compatible with automated assembly and 8 mm × 8 mm copper pad layout |
Pinout & Package
SMCJ11CA-E3/57T is housed in an SMC (DO-214AB) plastic package with two terminals: no polarity marking for bidirectional configuration. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either terminal serves as anode or cathode depending on transient polarity |
| Case (body) | Non-electrical mechanical interface | Provides thermal path to PCB copper pads; no electrical connection |
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 rating | Withstands high-energy transients common in 12 V automotive systems and industrial motor drives |
| AEC-Q101 qualification option | HE3/HM3 variants support automotive-grade reliability requirements including temperature cycling and humidity testing |
| Low clamping ratio (VC/VWM ≈ 1.65) | Minimizes overvoltage stress on downstream components during surge events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying manufacturing logistics |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V power rails in body control modules against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting voltage excursions to ≤18.2 V during 1500 W surges. Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers connected to protected rail. | Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at connector entry point before signal conditioning circuitry. Use Value: Maintains signal integrity by clamping sub-100 ns ESD pulses below 18.2 V without adding capacitance that degrades bandwidth. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY interfaces and PoE controllers from induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level bidirectional TVS absorbing up to 1500 W energy before secondary protection activates. Use Value: Extends system MTBF by preventing cumulative degradation of Ethernet magnetics and PHY ICs during repeated surge exposure. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp flyback voltage spikes during PWM switching. Use Value: Eliminates need for snubber RC networks, reducing BOM count and board space while maintaining IEC 61000-4-5 compliance. |
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 | Lower 600 W peak pulse power; same 11 V VWM, but 21.2 V VC at 28.3 A | Not suitable for high-energy load dump; limited to lower-tier consumer electronics | Select only when surge energy is confirmed ≤600 W and clamping voltage margin allows 21.2 V |
| 1.5KE11CA | Through-hole DO-201 package; identical 11 V VWM, 18.2 V VC, but 1500 W rating requires larger board area | Requires manual or wave-solder process; incompatible with fully SMT production lines | Choose only for legacy through-hole designs or prototyping where rework flexibility outweighs automation needs |
Compared with SAC11CA and 1.5KE11CA, SMCJ11CA-E3/57T delivers identical clamping performance in a compact SMT package with superior thermal dissipation and AEC-Q101 upgrade path - making it optimal for volume automotive and industrial designs requiring automated assembly and high-reliability surge immunity.
Availability
SMCJ11CA-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom line card surge protection requiring stable component supply and RoHS-compliant commercial-grade TVS diodes.
Supply support for SMCJ11CA-E3/57T 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, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, high-power, and automotive-qualified solutions.
The SMCJ series is engineered specifically for robust transient suppression in harsh environments - targeting 12 V/24 V automotive, industrial motor control, and infrastructure equipment where sustained surge immunity and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMCJ11CA-E3/57T at its rated peak pulse current?
The SMCJ11CA-E3/57T has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current of 82.4 A, measured using a 10/1000 µs waveform. This value ensures protected circuits experience no more than 18.2 V during full-rated surge events, directly supporting design margins for 12 V systems. The SMCJ11CA-E3/57T maintains this clamping performance across its qualified operating temperature range.
Is SMCJ11CA-E3/57T suitable for automotive applications requiring AEC-Q101 qualification?
The SMCJ11CA-E3/57T itself is RoHS-compliant commercial grade (E3 suffix), not AEC-Q101 qualified. However, Vishay offers AEC-Q101-qualified versions under ordering codes SMCJ11CAHE3_X (RoHS + AEC-Q101) and SMCJ11CAHM3_X (halogen-free + AEC-Q101). For automotive production, specify the HE3 or HM3 variant - the SMCJ11CA-E3/57T remains suitable for non-automotive industrial or consumer use.
How does the bidirectional nature of SMCJ11CA-E3/57T affect its placement on the PCB?
The SMCJ11CA-E3/57T has no polarity marking and functions identically in both directions, so orientation on the PCB is not critical - either terminal may connect to either side of the protected line. This simplifies layout and eliminates risk of reverse installation. Unlike unidirectional TVS diodes, the SMCJ11CA-E3/57T requires no cathode band alignment, making it ideal for differential or floating signal paths.
What is the thermal resistance from junction to ambient for SMCJ11CA-E3/57T, and how does it impact power derating?
The SMCJ11CA-E3/57T 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. This value determines derating above 25 °C ambient: for example, at 85 °C ambient, maximum continuous power drops to ~3.3 W. Derating curves in Figure 2 of the Vishay datasheet (88394) must be applied for accurate thermal design - the SMCJ11CA-E3/57T's RθJA enables reliable operation in enclosed industrial enclosures.
Can SMCJ11CA-E3/57T replace a unidirectional TVS like SMCJ11A in an existing design?
Yes, the SMCJ11CA-E3/57T can replace SMCJ11A in most cases because both share identical VWM (11 V), VC (18.2 V), and PPPM (1500 W), and fit the same SMC (DO-214AB) footprint. However, the SMCJ11CA-E3/57T lacks polarity marking and conducts in both directions - verify that reverse leakage or AC signal coupling won't interfere with circuit function. If the original design relies on unidirectional blocking, retain SMCJ11A; otherwise, SMCJ11CA-E3/57T offers enhanced flexibility.
SMCJ11CA-E3/57T 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 (SMCJ)
SMCJ11CA-E3/57T FAQ
1.How can I place an order for SMCJ11CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CA-E3/57T 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-E3/57T reliable?
The price and inventory of SMCJ11CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ11CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CA-E3/57T?
SMCJ11CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CA-E3/57T 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-E3/57T?
For technical support, including SMCJ11CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ11CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ11CA-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ11CA-E3/57T?
All SMCJ11CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CA-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ11CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11CA-E3/57T Tags
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