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Vishay General Semiconductor - Diodes Division SMCJ11CAHM3_A/H
- Part No.:
- SMCJ11CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CAHM3_A/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,576
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Product details
Overview
SMCJ11CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 11 V standoff voltage (VWM), 18.2 V maximum clamping voltage (VC) at 82.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ11CAHM3_A/H datasheet, SMCJ11CAHM3_A/H pinout, SMCJ11CAHM3_A/H application, or SMCJ11CAHM3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), junction temperature range (–55 °C to +150 °C), and thermal resistance (RθJA = 75 °C/W).
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM (11 V), it avalanches symmetrically in both directions to clamp voltage at ≤18.2 V while diverting surge current up to 82.4 A. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount automated assembly, the SMCJ11CAHM3_A/H meets MSL Level 1 (260 °C peak reflow) and JESD201 Class 2 whisker resistance. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification - critical for automotive-grade reliability under cyclic thermal stress and vibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 11 V - maximum continuous reverse voltage before clamping initiates; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 12.2 V min / 13.5 V max at 1 mA - precise avalanche threshold ensuring predictable turn-on during transients. |
| VC (Clamping Voltage) | 18.2 V at IPPM = 82.4 A - limits downstream voltage stress during 10/1000 μs surges, protecting ICs and MOSFETs. |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for high-energy transients like ISO 7637-2 Load Dump or IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | 5.0 μA max at VWM - negligible standby current, preserving low-power system integrity. |
| TJ Range | –55 °C to +150 °C - supports operation in under-hood automotive and industrial environments without derating. |
| RθJA | 75 °C/W - enables thermal design on standard 8 mm × 8 mm copper pads; requires no heatsink for typical 1-pulse events. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during positive or negative surges relative to cathode. |
| Cathode | Transient return path (bidirectional) | Connects to reference plane (e.g., ground or rail); completes clamping loop in either polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| AEC-Q101 qualified (HM3) | Validated for automotive applications including engine control, ADAS sensors, and infotainment power domains. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A Tier 1 reporting requirements for sustainable manufacturing. |
| Low RθJL (15 °C/W) | Supports efficient heat transfer to PCB leads, improving reliability during repetitive surge events. |
| MSL Level 1 rating | Permits standard SMT reflow without moisture sensitivity concerns - eliminates baking requirement. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against load dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt TVS clamping transient energy before it reaches LDO regulators and MCU VDD pins. Use Value: Limits voltage to ≤18.2 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream silicon. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) in pressure/temperature transmitters exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal and return lines to suppress ±15 kV HBM ESD and 1 kV ring wave noise. Use Value: Symmetric clamping preserves signal integrity in AC-coupled or differential configurations without polarity biasing. |
| Telecom Interface Surge Protection | Consumer USB Port ESD Suppression |
Use Scenario: Shielding RS-485 transceiver I/O pins in base station remote units subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary front-end TVS on bus lines, coordinated with secondary GDT or polymer PTC for multi-stage protection. Use Value: 1500 W PPPM handles IEC 61000-4-5 Level 4 (4 kV line-earth) surges without degradation after single-event exposure. |
Use Scenario: Adding robust ESD immunity to USB 2.0 data lines (D+/D−) in smart home hubs where user-accessible ports face frequent human-body-model discharges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional TVS placed directly at connector to minimize stub length. Use Value: Clamps ±15 kV contact discharge to <20 V within <1 ns, preventing data corruption and PHY layer latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11CAHE3_A/H | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not ISO 7637-2 load dump | Select when board space is constrained and surge energy is limited to ≤400 W. |
| SMCJ11CA-E3/57T | Same electrical specs, but E3 suffix = standard RoHS (not halogen-free) and non-AEC-Q101 qualified | Approved for commercial/industrial use only; excluded from automotive production BOMs requiring AEC-Q101 | Choose for cost-sensitive non-automotive designs where halogen-free and automotive qualification are not mandated. |
Compared with SMCJ11CAHM3_A/H, SMAJ11CAHE3_A/H trades surge capacity and thermal robustness for footprint reduction, while SMCJ11CA-E3/57T retains full electrical performance but lacks halogen-free content and automotive qualification - making SMCJ11CAHM3_A/H the sole option meeting all three criteria: 1500 W, AEC-Q101, and halogen-free compliance.
Availability
SMCJ11CAHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor transmitters, telecom interface modules, and consumer USB peripheral protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ11CAHM3_A/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 reliability, efficiency, and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through proven clamping performance and qualification rigor.
FAQ
What does the "HM3" suffix indicate in SMCJ11CAHM3_A/H?
The HM3 suffix in SMCJ11CAHM3_A/H denotes halogen-free, RoHS-compliant construction and AEC-Q101 qualification. This means the device meets automotive reliability standards for temperature cycling, mechanical shock, and humidity testing, and contains no brominated flame retardants or chlorine-based compounds - fulfilling strict environmental and safety requirements for modern vehicle electronics.
Is SMCJ11CAHM3_A/H unidirectional or bidirectional?
SMCJ11CAHM3_A/H is a bidirectional transient voltage suppressor, as confirmed by the "CA" designation in its part number. It provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses, or floating power domains without requiring polarity-aware layout or external biasing networks.
What is the maximum clamping voltage of SMCJ11CAHM3_A/H and under what test condition?
The maximum clamping voltage of SMCJ11CAHM3_A/H is 18.2 V, measured at a peak pulse current (IPPM) of 82.4 A using the standardized 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring downstream components remain within safe operating voltage margins.
Can SMCJ11CAHM3_A/H replace SMCJ11A in an existing design?
No - SMCJ11CAHM3_A/H cannot directly replace unidirectional SMCJ11A because their conduction behavior differs fundamentally: SMCJ11A clamps only in reverse bias (cathode-to-anode), while SMCJ11CAHM3_A/H clamps symmetrically in both directions. Substitution would require verifying that bidirectional clamping is acceptable for the target signal/power topology and confirming no unintended forward conduction paths exist.
What PCB pad layout is recommended for optimal thermal performance of SMCJ11CAHM3_A/H?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for SMCJ11CAHM3_A/H to achieve rated PPPM and thermal resistance (RθJA = 75 °C/W). Using smaller pads reduces surge current capability and increases junction temperature - potentially causing premature failure during repeated transients or elevated ambient conditions.
SMCJ11CAHM3_A/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:
- 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:
- 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_A/H FAQ
1.How can I place an order for SMCJ11CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CAHM3_A/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_A/H reliable?
The price and inventory of SMCJ11CAHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ11CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CAHM3_A/H?
SMCJ11CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CAHM3_A/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_A/H?
For technical support, including SMCJ11CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ11CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ11CAHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ11CAHM3_A/H?
All SMCJ11CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CAHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for SMCJ11CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11CAHM3_A/H Tags
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