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Vishay General Semiconductor - Diodes Division SMCJ11AHM3/I
- Part No.:
- SMCJ11AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11AHM3/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,429
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Product details
Overview
SMCJ11AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 11 V standoff voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 18.2 V maximum clamping voltage (VC) at 82.4 A IPPM, and operates from –55 °C to +150 °C junction temperature.
For engineers reviewing the SMCJ11AHM3/I datasheet, SMCJ11AHM3/I pinout, SMCJ11AHM3/I application, or SMCJ11AHM3/I equivalent, this device is selected for robust overvoltage protection in automotive power rails, industrial sensor interfaces, and DC-DC converter input stages where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are required.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for low incremental surge resistance and stable clamping under repetitive transient stress. Its unidirectional polarity enables integration into DC-biased circuits with cathode-anode orientation defined by the band marking.
The device meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and is halogen-free and RoHS-compliant (HM3 suffix). Thermal resistance is 75 °C/W junction-to-ambient and 15 °C/W junction-to-lead, enabling reliable operation without heatsinking up to 6.5 W continuous dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum reverse operating voltage before significant leakage; defines safe DC bias margin for protected line. |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients. |
| VC @ IPPM | 18.2 V at 82.4 A - Clamping voltage limits downstream IC stress during 10/1000 µs surge events. |
| PPPM | 1500 W - Peak pulse power handling capacity for IEC 61000-4-5 Level 4 surge immunity compliance. |
| ID @ VWM | 5.0 µA - Low reverse leakage preserves efficiency in battery-powered or high-impedance sensor circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal footprint. |
Pinout & Package
SMCJ11AHM3/I is housed in an SMC (DO-214AB) plastic package with two terminals: cathode (marked with band) and anode. The package measures 7.75 mm × 6.22 mm × 2.62 mm (L × W × H) and features matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements including HTOL, TCT, and ESD. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance mandates for Tier-1 automotive suppliers and EU industrial equipment. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage. |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard SMT reflow profiles up to 260 °C peak. |
| 1500 W 10/1000 µs surge capability | Supports IEC 61000-4-5 combination wave testing at ±2 kV (line-earth) and ±1 kV (line-line). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before LDO or MCU power pins. Use Value: Withstands 1500 W pulses and maintains clamping below 18.2 V, preventing brownout or reset in safety-critical modules. |
Use Scenario: Shielding 4–20 mA current loop transmitters from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable design adapted as unidirectional clamp across analog input terminals. Use Value: 5.0 µA leakage at 11 V preserves loop accuracy; 1 ns response prevents op-amp saturation during fast transients. |
| DC-DC Converter Input Stage | USB-C Power Delivery Line |
|
Use Scenario: Safeguarding buck converter front-end against reverse-polarity connection and flyback spikes. IC Role / Device Role / Timing Role: Cathode tied to VIN, anode to GND; absorbs energy from inductor kickback during MOSFET turn-off. Use Value: 200 A IFSM rating handles single-event inrush; 15 Ω typical RθJL enables rapid heat dissipation into PCB copper. |
Use Scenario: Adding secondary-level surge protection on VBUS line downstream of primary PD controller. IC Role / Device Role / Timing Role: Unidirectional TVS installed between VBUS and chassis ground to suppress conducted EFT bursts. Use Value: 18.2 V VC ensures USB-PD 20 V operation remains within safe margin; HM3 suffix satisfies portable device halogen restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11AHE3/A | Lower PPPM (400 W), SMA package (smaller thermal mass), same VWM/VBR range. | Suitable for space-constrained consumer ports but insufficient for automotive load dump. | Select only for cost-sensitive, non-automotive designs with ≤400 W surge exposure. |
| SMCJ11AHE3/I | Same electrical specs and SMC package, but RoHS-compliant commercial grade (E3) instead of halogen-free (HM3). | Lacks halogen-free certification; acceptable for industrial but not Tier-1 automotive procurement. | Choose when halogen-free compliance is not mandated and supply chain prioritizes E3 inventory. |
Compared with SMCJ11AHM3/I, SMAJ11AHE3/A offers reduced surge robustness in a smaller footprint, while SMCJ11AHE3/I matches performance but omits halogen-free assurance-making SMCJ11AHM3/I the sole option meeting both AEC-Q101 and halogen-free requirements in SMC form factor.
Availability
SMCJ11AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, and USB-C PD interface protection requiring stable component supply across long-lifecycle programs.
Supply support for SMCJ11AHM3/I 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 automotive-grade validation.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive electronics, industrial automation, and telecom infrastructure demanding AEC-Q101 and high-PPPM performance.
FAQ
What is the clamping voltage of SMCJ11AHM3/I at its rated peak pulse current?
The SMCJ11AHM3/I has a maximum clamping voltage (VC) of 18.2 V when subjected to its rated peak pulse current (IPPM) of 82.4 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components remain within safe operating voltage margins during surge events. The SMCJ11AHM3/I achieves this with low incremental surge resistance and stable junction characteristics across temperature.
Is SMCJ11AHM3/I qualified for automotive applications?
Yes, SMCJ11AHM3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3_X" designation and documentation in datasheet 88394. It undergoes stress testing including high-temperature operating life, temperature cycling, and ESD per automotive reliability standards. The SMCJ11AHM3/I is intended for under-hood and body-control module applications where sustained operation up to +150 °C junction temperature is required.
How does the HM3 suffix differ from E3 or HE3 in SMCJ11A variants?
The HM3 suffix on SMCJ11AHM3/I indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified construction-distinct from E3 (RoHS-compliant commercial grade only) and HE3 (RoHS-compliant + AEC-Q101, but not halogen-free). The SMCJ11AHM3/I meets strict environmental mandates for Tier-1 automotive suppliers and export-controlled industrial systems where brominated flame retardants are prohibited.
What is the thermal resistance of SMCJ11AHM3/I, and how does it affect PCB layout?
The SMCJ11AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. To maintain safe operation at full 6.5 W continuous power dissipation, the PCB must provide minimum 8.0 mm × 8.0 mm copper pads per terminal as specified in the datasheet. Reducing pad area increases thermal impedance and risks exceeding the +150 °C TJ max., especially in sealed enclosures.
Can SMCJ11AHM3/I be used in bidirectional configurations?
No, SMCJ11AHM3/I is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. For bidirectional operation, Vishay specifies the SMCJ11CA variant. Using SMCJ11AHM3/I in reverse-biased AC applications would result in forward conduction and failure. Always verify polarity alignment: cathode to protected line, anode to reference ground.
SMCJ11AHM3/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ11AHM3/I FAQ
1.How can I place an order for SMCJ11AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11AHM3/I 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 SMCJ11AHM3/I reliable?
The price and inventory of SMCJ11AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ11AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11AHM3/I?
SMCJ11AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11AHM3/I 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 SMCJ11AHM3/I?
For technical support, including SMCJ11AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11AHM3/I requirements.
6.How does Aetrix verify that SMCJ11AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ11AHM3/I 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 SMCJ11AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ11AHM3/I?
All SMCJ11AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11AHM3/I, 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 SMCJ11AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ11AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11AHM3/I Tags
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