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Vishay General Semiconductor - Diodes Division SMCJ11CAHM3/H
- Part No.:
- SMCJ11CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CAHM3/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,717
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Product details
Overview
SMCJ11CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 11 V stand-off voltage (VWM), 18.2 V maximum clamping voltage (VC) at 82.4 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), making it suitable for automotive sensor line protection per AEC-Q101 requirements.
For engineers reviewing the SMCJ11CAHM3/H datasheet, SMCJ11CAHM3/H pinout, SMCJ11CAHM3/H application, or SMCJ11CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, MSL Level 1 reflow compatibility, halogen-free RoHS compliance, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a voltage-clamped crowbar during transients, with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable VBR (12.2–13.5 V at 1 mA) and low leakage (<5 µA at VWM), while the SMC package delivers thermal resistance of 75 °C/W (junction-to-ambient) and supports 260 °C peak reflow per J-STD-020.
The SMCJ11CAHM3/H is rated for -55 °C to +150 °C operating junction temperature and meets UL 497B recognition (QVGQ2). Its 1500 W PPPM rating applies under standardized 10/1000 µs surge conditions with derating above 25 °C ambient, and it exhibits a positive temperature coefficient of VBR (+0.080 %/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse working voltage before clamping begins |
| VC @ IPPM | 18.2 V - Clamped voltage across terminals at 82.4 A peak pulse current, limiting downstream stress |
| IPPM | 82.4 A - Peak surge current survivable under 10/1000 µs waveform without degradation |
| PPPM | 1500 W - Peak pulse power handling capacity, defining transient energy absorption capability |
| TJ max. | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test standard, including temperature cycling and HTRB |
Pinout & Package
SMCJ11CAHM3/H uses the SMC (DO-214AB) surface-mount package: 2-terminal, non-polarized bidirectional configuration with no cathode marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), matte tin-plated leads, MSL Level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Surge current path | Both terminals function identically; clamping occurs symmetrically regardless of polarity |
| Case / Body | Thermal interface | Exposed metal slug provides primary heat conduction path to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global OEM supply chains and end-of-life recycling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive ICs |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor outputs from load dump and ISO 7637-2 pulse 5a transients in vehicle chassis. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning amplifier. Use Value: Maintains signal integrity by limiting induced voltage to ≤18.2 V during 100 A surges, preventing latch-up or damage to 3.3 V/5 V analog front-end ICs. | Use Scenario: Safeguarding CANH/CANL differential pair against ESD and inductive switching noise in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional transient suppressor installed across differential bus lines to clamp common-mode surges without disrupting DC bias. Use Value: Symmetrical clamping ensures equal protection on both lines, preserving CAN signal timing margins and meeting ISO 11898-2 EMC immunity requirements. |
| Consumer Power Adapter Input | Telecom DSL Line Interface |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of wall-mounted AC/DC adapters used in smart home hubs. IC Role / Device Role / Timing Role: Standby-mode protector that remains inactive below 11 V but clamps fast transients from capacitor discharge or hot-plug events. Use Value: Prevents brownout-induced microcontroller resets by holding rail voltage within ±10 % of nominal during 1500 W surges. | Use Scenario: Primary protection for ADSL/VDSL line drivers exposed to lightning-induced surges on outdoor telecom drop wires. IC Role / Device Role / Timing Role: First-stage TVS mounted at line entry before hybrid transformer, absorbing bulk surge energy before secondary-side protection. Use Value: Withstands repeated 10/1000 µs surges up to 82.4 A, extending service life of line driver ICs and reducing field failure rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CAHM3/H | Lower PPPM (600 W), smaller SMB package (DO-214AA), higher RθJA (110 °C/W) | Suitable for lower-energy transients; limited thermal mass reduces sustained surge handling | Select when board space is constrained and peak surge energy is ≤600 W |
| SMCJ11CAHE3/H | Same electrical specs and package, but RoHS-compliant commercial grade (non-AEC-Q101), tin-lead solder compatible | Lacks automotive qualification; intended for industrial/commercial systems with less stringent reliability validation | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with SMBJ11CAHM3/H and SMCJ11CAHE3/H, the SMCJ11CAHM3/H uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and halogen-free compliance-making it the only option qualified for high-reliability automotive signal line protection requiring all three attributes.
Availability
SMCJ11CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interfaces, consumer power adapter inputs, and telecom DSL line interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ11CAHM3/H 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-efficiency performance.
The SMCJ series targets high-energy transient suppression in harsh environments; this product line was engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 validation and robust 1500 W surge handling.
FAQ
What does the 'CA' suffix indicate in SMCJ11CAHM3/H?
The 'CA' suffix in SMCJ11CAHM3/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates polarity sensitivity during layout and enables use on AC-coupled or floating signal lines. Unlike unidirectional variants (e.g., SMCJ11A), the SMCJ11CAHM3/H has no cathode marking and clamps equally for positive or negative surges.
Is SMCJ11CAHM3/H qualified for automotive applications?
Yes, SMCJ11CAHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code HM3_X designation and documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing-validating its suitability for under-hood and chassis-mounted automotive electronics such as sensor interfaces and body control modules.
What is the maximum clamping voltage of SMCJ11CAHM3/H and how is it measured?
The maximum clamping voltage (VC) of SMCJ11CAHM3/H is 18.2 V, measured at 82.4 A peak pulse current (IPPM) under standardized 10/1000 µs waveform conditions per ANSI/IEEE C62.35. This value represents the worst-case voltage seen across the device during surge events and defines the upper voltage limit imposed on protected circuitry.
How does the HM3 suffix differ from HE3 in SMCJ11CAHM3/H?
The HM3 suffix in SMCJ11CAHM3/H indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, whereas HE3 denotes RoHS-compliant and AEC-Q101-qualified but not halogen-free. Both meet JESD201 Class 2 whisker resistance and MSL Level 1, but HM3 adds halogen-free material compliance required by certain automotive OEMs and green electronics standards.
What PCB layout guidance applies to SMCJ11CAHM3/H for optimal thermal performance?
For optimal thermal performance, SMCJ11CAHM3/H must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Vishay's datasheet. These pads act as heat sinks to manage 6.5 W power dissipation at 50 °C ambient; insufficient copper area increases junction temperature and reduces surge endurance. Thermal vias under the pad are recommended for multilayer boards.
SMCJ11CAHM3/H 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:
- -
- 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:
- 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)
SMCJ11CAHM3/H FAQ
1.How can I place an order for SMCJ11CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CAHM3/H 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 SMCJ11CAHM3/H reliable?
The price and inventory of SMCJ11CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ11CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CAHM3/H?
SMCJ11CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CAHM3/H 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 SMCJ11CAHM3/H?
For technical support, including SMCJ11CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CAHM3/H requirements.
6.How does Aetrix verify that SMCJ11CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ11CAHM3/H 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 SMCJ11CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ11CAHM3/H?
All SMCJ11CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CAHM3/H, 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 SMCJ11CAHM3/H part is unused and in its original packaging.
Return procedure for SMCJ11CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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