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Vishay General Semiconductor - Diodes Division SMCJ11AHE3/9AT
- Part No.:
- SMCJ11AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11AHE3/9AT.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,623
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Product details
Overview
SMCJ11AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 11 V standoff voltage (VWM), 12.2–13.5 V breakdown range (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 - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMCJ11AHE3/9AT datasheet, SMCJ11AHE3/9AT pinout, SMCJ11AHE3/9AT application, or SMCJ11AHE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.42), 0.080 %/°C VBR temperature coefficient, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamp, conducting only during reverse overvoltage events while remaining high-impedance under normal bias. Its glass-passivated junction ensures stable leakage (<5.0 µA at VWM) and fast response (<1 ns), enabling protection of sensitive MOSFET gates and microcontroller I/O pins against ESD and inductive switching transients.
The device is rated for 150 °C maximum junction temperature and exhibits 75 °C/W junction-to-ambient thermal resistance on standard PCB pads. Its 200 A non-repetitive forward surge rating (8.3 ms half-sine) supports robustness against load-dump events in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 11 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown) | 12.2–13.5 V at 1 mA - Confirmed breakdown threshold defining turn-on precision |
| VC (Clamping) | 18.2 V at 82.4 A - Peak voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - Surge energy handling capacity per single transient event |
| IPPM | 82.4 A - Peak current supported at rated clamping voltage |
| TJ max | +150 °C - Enables operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - Surface-mount footprint compatible with IPC-7351B standard |
Pinout & Package
SMCJ11AHE3/9AT uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, polarity indicated by a cathode band on the body. Terminals are optimized for J-STD-002 solderability and JESD22-B102 whisker resistance (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected line connection | Connected to line being safeguarded (e.g., 12 V rail); conducts when voltage exceeds VBR |
| Anode | Reference/Ground return | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Ensures stable leakage current (<5 µA) and long-term parameter stability across humidity and thermal stress |
| Low clamping ratio (VC/VBR) | ≈1.42 - Minimizes overvoltage exposure to downstream ICs during transient events |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - eliminates bake requirements prior to reflow |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 variant adds halogen-free molding compound |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed control modules from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 13.5 V. Use Value: Limits peak voltage to 18.2 V during 82.4 A transients, preventing damage to LDOs and MCU power domains. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog inputs. IC Role / Device Role / Timing Role: Clamp device on signal line to absorb ESD and cable discharge events. Use Value: Sub-1 ns response ensures protection before sensitive op-amp inputs saturate or latch up. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: Input protection for buck converters in industrial power supplies subjected to field wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VIN rail upstream of input capacitor. Use Value: 1500 W surge rating handles repetitive 10/1000 µs spikes without degradation under derated conditions. | Use Scenario: Isolation of high-side gate driver ICs from Miller-induced voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: Local clamp across gate-source or gate-drain to suppress dv/dt-induced false turn-on. Use Value: Low incremental surge resistance maintains clamping effectiveness even at high di/dt rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11AHE3/52T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM/VBR specs | Reduced surge margin; suitable for space-constrained consumer designs with lower threat levels | Select when board area is critical and peak surge energy remains below 600 W |
| 1.5KE11A | Through-hole DO-201 package, higher VC (18.5 V), identical VWM/VBR, same 1500 W rating | Requires through-hole assembly; used where legacy layouts or mechanical robustness outweigh SMT benefits | Choose for repair/refurbish scenarios or high-vibration environments demanding leaded mounting |
Compared with SMBJ11AHE3/52T and 1.5KE11A, the SMCJ11AHE3/9AT delivers optimal balance of high surge capability, AEC-Q101 qualification, and SMT manufacturability - making it preferred for new automotive and industrial designs requiring both reliability and scalability.
Availability
SMCJ11AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and DC-DC converter input protection requiring stable component supply and full traceability.
Supply support for SMCJ11AHE3/9AT 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 and application-specific performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial automation, and telecom infrastructure.
FAQ
What is the clamping voltage of SMCJ11AHE3/9AT at its rated peak pulse current?
The SMCJ11AHE3/9AT has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated 82.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and confirmed in Vishay's Document Number 88394, ensuring predictable overvoltage limiting for downstream components in the protected circuit.
Is SMCJ11AHE3/9AT qualified for automotive applications?
Yes, SMCJ11AHE3/9AT is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This certification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS sensor interfaces.
What does the "9AT" suffix mean in SMCJ11AHE3/9AT?
The "9AT" suffix specifies the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3500 units per reel. This format supports high-volume automated pick-and-place assembly and is distinct from the "57T" (7-inch reel, 850 units) option used in lower-volume or prototyping scenarios.
How does the thermal resistance of SMCJ11AHE3/9AT affect PCB layout?
SMCJ11AHE3/9AT has a typical RθJA of 75 °C/W on standard 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C during repeated surges, designers must provide adequate copper area and avoid excessive trace length - especially critical in automotive applications where ambient temperatures exceed 85 °C.
Can SMCJ11AHE3/9AT be used in bidirectional configurations?
No, SMCJ11AHE3/9AT is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode band marking. For bidirectional operation, the equivalent part is SMCJ11CAHE3/9AT (with "CA" suffix), which provides symmetrical clamping in both polarities and no polarity marking on the package body.
SMCJ11AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ11AHE3/9AT FAQ
1.How can I place an order for SMCJ11AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11AHE3/9AT 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 SMCJ11AHE3/9AT reliable?
The price and inventory of SMCJ11AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ11AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11AHE3/9AT?
SMCJ11AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11AHE3/9AT 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 SMCJ11AHE3/9AT?
For technical support, including SMCJ11AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11AHE3/9AT requirements.
6.How does Aetrix verify that SMCJ11AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ11AHE3/9AT 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 SMCJ11AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ11AHE3/9AT?
All SMCJ11AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11AHE3/9AT, 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 SMCJ11AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ11AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11AHE3/9AT Tags
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