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Vishay General Semiconductor - Diodes Division SMCJ11CA-E3/9AT
- Part No.:
- SMCJ11CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CA-E3/9AT.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ11CA-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 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 control systems.
For engineers reviewing the SMCJ11CA-E3/9AT datasheet, SMCJ11CA-E3/9AT pinout, SMCJ11CA-E3/9AT application, or SMCJ11CA-E3/9AT equivalent, this device is selected for high-energy transient suppression where bidirectional polarity, low clamping ratio (1.65× VWM), AEC-Q101 qualification eligibility, and RoHS-compliant matte tin terminations are required.
Technical Context
The SMCJ11CA-E3/9AT operates as a silicon avalanche diode with symmetrical breakdown behavior in both directions, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and repeatable clamping performance across temperature (-55 °C to +150 °C).
It delivers fast response time (<1 ps) to ESD and lightning-induced surges, with low incremental surge resistance supporting consistent VC under repetitive stress. Thermal resistance (RθJA = 75 °C/W) and junction-to-lead (RθJL = 15 °C/W) values are specified for PCB pad layout per 8.0 mm × 8.0 mm copper area per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range. |
| VBR min/max | 12.2 V / 13.5 V at 1 mA - Verified breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 18.2 V at 82.4 A - Clamped voltage during 1500 W transient; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | <1 µA - Reverse leakage at standoff voltage; critical for low-power sensor and battery-backed circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement. |
Pinout & Package
SMCJ11CA-E3/9AT uses a 2-terminal SMC (DO-214AB) package with no polarity marking - consistent with bidirectional construction. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | Acts as cathode during positive surge; accepts surge current regardless of polarity due to symmetric structure. |
| Cathode | Transient current exit (either direction) | Acts as anode during negative surge; completes low-impedance path to ground or rail during bidirectional clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses, or ungrounded nodes without polarity-sensitive layout. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 4 kV surge (line-earth) and ISO 7637-2 Pulse 1/2a/5a in automotive ECUs. |
| Low clamping ratio (1.65× VWM) | Minimizes voltage overshoot across protected ICs - critical for 3.3 V or 5 V logic interfacing. |
| AEC-Q101 qualification option | HE3/HM3 variants available; SMCJ11CA-E3/9AT shares identical die and construction, enabling qualification-ready sourcing. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak - eliminates bake requirements in high-volume SMT lines. |
Applications
| Automotive Body Control Module | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting LIN and CANH/CANL lines from load dump and inductive switching transients in door modules and seat controllers. IC Role / Device Role / Timing Role: Bidirectional TVS placed between bus line and chassis ground to clamp ±200 V spikes within 1 ns. Use Value: Prevents latch-up or permanent damage to TJA1042 or SN65HVD230 transceivers while maintaining signal integrity below 18.2 V. |
Use Scenario: Shielding RS-485 and CAN FD physical layer transceivers from EFT bursts and electrostatic discharge in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) transient suppressor mounted directly at connector entry point. Use Value: Limits bus-line overvoltage to 18.2 V during 40 A/10/1000 µs surge, preserving data integrity and avoiding receiver saturation. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
|
Use Scenario: Safeguarding microcontroller GPIOs and gate drivers connected to brushed DC motor commutation circuits. IC Role / Device Role / Timing Role: Clamp induced back-EMF spikes (>100 V) generated during MOSFET turn-off in H-bridge stages. Use Value: Absorbs 1500 W transient energy without degradation, extending MCU lifetime in washing machine and HVAC blower controls. |
Use Scenario: Front-end protection of 12 V/24 V telecom DC-DC converters against lightning-induced surges on primary-side input rails. IC Role / Device Role / Timing Role: Primary-stage TVS placed after fuse and before bulk capacitor to shunt surge current away from upstream rectifiers. Use Value: Maintains system uptime by preventing input-stage failure during 10/700 µs telecom surge tests up to 2 kV. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/52T | Same VWM/VC, but SMB (DO-214AA) package - 30 % smaller footprint, 1000 W PPPM. | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when board space is constrained and surge threat level is ≤1 kV. |
| 1.5KE11CA-T | Through-hole DO-201 package; same VWM/VC, 1500 W rating, but higher RθJA (100 °C/W) and slower mounting. | Not suitable for high-density SMT designs; requires wave solder or hand assembly. | Choose only for legacy through-hole systems or prototyping where rework tolerance is prioritized. |
Compared with SMBJ11CA-E3/52T and 1.5KE11CA-T, the SMCJ11CA-E3/9AT uniquely balances 1500 W surge capability, SMT scalability, and AEC-Q101 readiness - making it the preferred choice for new automotive and industrial designs requiring production-grade reliability and automated assembly.
Availability
SMCJ11CA-E3/9AT is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus protection, consumer appliance motor control, and telecom power input stages requiring stable component supply and full traceability.
Supply support for SMCJ11CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting design-in for automotive ECUs, industrial drives, and infrastructure equipment where robustness and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of SMCJ11CA-E3/9AT at its rated peak pulse current?
The SMCJ11CA-E3/9AT has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current of 82.4 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The clamping performance ensures protected downstream ICs remain below absolute maximum ratings during surge events. SMCJ11CA-E3/9AT maintains this specification across its full operating temperature range of -55 °C to +150 °C.
Is SMCJ11CA-E3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
SMCJ11CA-E3/9AT itself is the commercial-grade RoHS-compliant variant (E3 suffix), but it shares identical die, construction, and electrical characteristics with the AEC-Q101-qualified SMCJ11CAHE3_X family. Vishay explicitly states that HE3/HM3 ordering codes denote AEC-Q101 qualification - meaning SMCJ11CA-E3/9AT can be directly qualified or substituted with minimal revalidation. SMCJ11CA-E3/9AT is widely deployed in automotive body control modules where qualification readiness and supply chain flexibility are essential.
How does the bidirectional nature of SMCJ11CA-E3/9AT affect its PCB layout compared to unidirectional TVS diodes?
Unlike unidirectional TVS diodes that require correct cathode orientation relative to ground or supply rail, SMCJ11CA-E3/9AT has no polarity marking and functions identically in either direction - simplifying layout and eliminating orientation errors during automated placement. This symmetry allows direct placement across differential pairs (e.g., CANH/CANL) or floating inputs without reference to system ground. SMCJ11CA-E3/9AT's bidirectional behavior is verified by identical VBR and VC specs in both polarities per datasheet Table 1.
What is the thermal resistance of SMCJ11CA-E3/9AT, and how does it impact PCB design?
The SMCJ11CA-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, and junction-to-lead (RθJL) of 15 °C/W. These values mandate adherence to Vishay's recommended pad layout to avoid thermal runaway during repetitive surge events. Deviating from the specified copper area increases RθJA, reducing safe surge repetition rate. SMCJ11CA-E3/9AT's thermal performance is validated per JEDEC standards and directly impacts reliability in high-temperature automotive under-hood applications.
Can SMCJ11CA-E3/9AT be used to protect 3.3 V logic circuits?
No - SMCJ11CA-E3/9AT is not appropriate for direct protection of 3.3 V logic circuits because its 11 V standoff voltage (VWM) exceeds the IC's absolute maximum rating, and its 18.2 V clamping voltage would destroy most 3.3 V devices. It is intended for higher-voltage domains such as 12 V automotive supplies, 24 V industrial buses, or AC-coupled analog signal paths. For 3.3 V logic, lower-VWM TVS devices like SMAJ3.3A or ESD5Z3.3T1G are required. SMCJ11CA-E3/9AT must be applied only where system voltage margins accommodate its clamping profile.
SMCJ11CA-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):
- 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-E3/9AT FAQ
1.How can I place an order for SMCJ11CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CA-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 SMCJ11CA-E3/9AT reliable?
The price and inventory of SMCJ11CA-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 SMCJ11CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ11CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CA-E3/9AT?
SMCJ11CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CA-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 SMCJ11CA-E3/9AT?
For technical support, including SMCJ11CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ11CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ11CA-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 SMCJ11CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ11CA-E3/9AT?
All SMCJ11CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CA-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 SMCJ11CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ11CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11CA-E3/9AT Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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