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Vishay General Semiconductor - Diodes Division SMCJ11-E3/9AT
- Part No.:
- SMCJ11-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11-E3/9AT.pdf
- Description:
- TVS DIODE 11VWM 20.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
SMCJ11-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V clamping voltage (VC) at 82.4 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMCJ11-E3/9AT datasheet, SMCJ11-E3/9AT pinout, SMCJ11-E3/9AT application, or SMCJ11-E3/9AT equivalent, key selection criteria include clamping performance under 8.3 ms surge, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, RoHS compliance (E3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient overvoltages across protected lines. Its glass-passivated junction ensures stable leakage (<5 µA at VWM) and fast response time (<1 ns), while the DO-214AB package supports high surge current handling (IPPM = 82.4 A) without degradation under repeated 10/1000 µs pulses.
Thermal design relies on low junction-to-lead resistance (RθJL = 15 °C/W) and derating above 25 °C per Fig. 2; maximum junction temperature is rated at +150 °C. The E3 suffix confirms JESD 201 Class 1A whisker resistance and commercial-grade RoHS compliance, distinct from HE3 (AEC-Q101 qualified) variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Ensures reliable turn-on within tight tolerance for predictable protection threshold |
| VC @ IPPM | 18.2 V at 82.4 A - Clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power handling capability with standard 10/1000 µs waveform |
| IFSM | 200 A - Single half-sine surge rating (8.3 ms), critical for inductive load switching events |
| TJ max | +150 °C - Enables operation in under-hood automotive or industrial environments |
| RθJA | 75 °C/W - Thermal resistance to ambient on recommended 8.0 mm × 8.0 mm copper pads |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return line) in unidirectional protection |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., power rail or signal); conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<5 µA) across temperature and life cycle |
| AEC-Q101 qualification (HE3 variant only) | SMCJ11-E3/9AT is commercial-grade; HE3 suffix required for automotive-grade reliability validation |
| MSL Level 1 (J-STD-020) | Allows unlimited floor life and reflow up to 260 °C peak, compatible with standard lead-free assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and telecom equipment |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 13.5 V. Use Value: Limits clamped voltage to 18.2 V at 82.4 A, safeguarding 24 V-rated CAN transceivers and microcontrollers without derating. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive kickback in PLC modules. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or single-ended output to ground. Use Value: Sub-1 ns response and 18.2 V clamping prevent latch-up in precision ADC front-ends operating at ±10 V full scale. |
| Telecom DC Power Input Protection | Consumer USB Port Surge Suppression |
Use Scenario: Safeguarding 48 V PoE-powered switches against lightning-induced surges on Ethernet lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail upstream of DC/DC converters. Use Value: 1500 W peak power rating handles multiple 10/1000 µs surges per IEC 61000-4-5 Level 4 without parameter shift. | Use Scenario: Adding secondary-level surge immunity to USB 2.0 VBUS lines in smart home hubs. IC Role / Device Role / Timing Role: Unidirectional TVS from VBUS to ground, coordinated with primary polymer PTC. Use Value: 11 V VWM allows normal 5 V operation while clamping ESD events (IEC 61000-4-2 ±15 kV) to <19 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC11-015 | Lower PPPM (150 W), smaller SOD-123FL package, higher VC (23 V) | Suitable for space-constrained consumer ports but insufficient for 1500 W industrial surges | Select SMCJ11-E3/9AT when 1500 W surge handling and DO-214AB mechanical robustness are required |
| 1.5SMC11A | Identical electrical specs and DO-214AB package; same Vishay family, different ordering suffix | No functional or layout difference; identical pinout and thermal behavior | 1.5SMC11A is a direct form-fit-function alternative with identical datasheet parameters |
Compared with SAC11-015 and 1.5SMC11A, the SMCJ11-E3/9AT delivers full 1500 W surge capacity in a proven industrial package, whereas SAC11-015 trades power for size, and 1.5SMC11A offers identical performance with alternate packaging logistics.
Availability
SMCJ11-E3/9AT is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, and telecom DC power input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ11-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 and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS portfolio, engineered for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ11-E3/9AT under maximum rated surge current?
The SMCJ11-E3/9AT has a maximum clamping voltage (VC) of 18.2 V when subjected to its peak pulse current (IPPM) of 82.4 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components see limited overvoltage stress during transient events. The SMCJ11-E3/9AT maintains this clamping performance across its specified operating temperature range.
Is the SMCJ11-E3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
No - the SMCJ11-E3/9AT carries the E3 suffix, indicating RoHS-compliant commercial-grade construction. For AEC-Q101 qualification, the HE3 suffix variant (e.g., SMCJ11HE3/9AT) must be selected. The SMCJ11-E3/9AT shares identical electrical characteristics but lacks the extended reliability testing required for automotive under-hood deployment.
What is the thermal resistance of the SMCJ11-E3/9AT, and how does it affect PCB layout?
The SMCJ11-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under sustained surge conditions, PCB layout must adhere to this pad size and use internal ground planes for heat spreading. The SMCJ11-E3/9AT's RθJL of 15 °C/W further emphasizes the importance of short, wide traces to thermal vias.
How does the SMCJ11-E3/9AT differ from bi-directional SMCJ11CA variants?
The SMCJ11-E3/9AT is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse conduction is not required. In contrast, SMCJ11CA is bi-directional, has no polarity marking, and clamps transients of either polarity - making it suitable for AC lines or data lines with bidirectional signaling. The SMCJ11-E3/9AT exhibits forward voltage drop (~3.5 V at 100 A), while SMCJ11CA does not conduct forward current.
What is the surge current rating of the SMCJ11-E3/9AT for non-repetitive 8.3 ms events?
The SMCJ11-E3/9AT is rated for a non-repetitive peak forward surge current (IFSM) of 200 A for an 8.3 ms single half-sine waveform, per JEDEC standards. This rating applies only to unidirectional operation and validates its suitability for protecting against inductive switching spikes in relay drivers or motor controllers. The SMCJ11-E3/9AT sustains this surge without parametric shift when mounted per recommended pad layout.
SMCJ11-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 74.6A
- 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)
SMCJ11-E3/9AT FAQ
1.How can I place an order for SMCJ11-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11-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 SMCJ11-E3/9AT reliable?
The price and inventory of SMCJ11-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 SMCJ11-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ11-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11-E3/9AT?
SMCJ11-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11-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 SMCJ11-E3/9AT?
For technical support, including SMCJ11-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11-E3/9AT requirements.
6.How does Aetrix verify that SMCJ11-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ11-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 SMCJ11-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ11-E3/9AT?
All SMCJ11-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11-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 SMCJ11-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ11-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11-E3/9AT Tags
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