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Vishay General Semiconductor - Diodes Division SMCJ11CAHE3_A/H
- Part No.:
- SMCJ11CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11CAHE3_A/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ11CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 11 V standoff voltage (VWM), 18.2 V maximum clamping voltage at 82.4 A peak pulse current (10/1000 µs), and 1500 W peak pulse power rating. Used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial environments.
For engineers reviewing the SMCJ11CAHE3_A/H datasheet, SMCJ11CAHE3_A/H pinout, SMCJ11CAHE3_A/H application, or SMCJ11CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge handling, low clamping ratio (VC/VWM = 1.65), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the SMC package provides robust thermal dissipation (RθJL = 15 °C/W) and meets MSL Level 1 reflow requirements.
The device complies with ANSI/IEEE C62.35 for transient suppressor definitions and delivers consistent clamping performance across -55 °C to +150 °C operating junction temperature. Its 0.080 %/°C breakdown voltage temperature coefficient ensures predictable VBR drift under thermal stress in engine bay or industrial control applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 12.2 V / 13.5 V at 1.0 mA - Verified breakdown threshold range ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 18.2 V at 82.4 A - Clamping voltage limits downstream component stress during 10/1000 µs surge events per IEC 61000-4-5. |
| PPPM | 1500 W - Peak pulse power handling capacity supports high-energy ESD and load-dump immunity in automotive ECUs. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive modules and industrial motor drives with elevated ambient temperatures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Acts as cathode in one polarity, anode in the other; symmetrical conduction enables AC line protection without orientation constraints. |
| Cathode | Transient current exit (bidirectional) | Same terminal as Anode in reverse bias; dual-role terminal eliminates need for directional placement during automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential buses (e.g., CAN, RS-485) or AC-coupled analog inputs without external polarity management. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring extended temperature operation and long-term reliability. |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) surges up to 120 V/200 ms in 12 V systems when used with appropriate series impedance. |
| Low clamping ratio (VC/VWM = 1.65) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V or 5 V logic interfaces sharing same supply rail. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles (peak 260 °C), eliminating bake-out requirements and reducing manufacturing cost. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protecting 12 V power rails feeding engine control units against load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and LDOs to limit input voltage excursion. Use Value: Limits rail voltage to ≤18.2 V during 1500 W surge events, preventing damage to downstream regulators rated for 20 V absolute maximum. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional shunt protector on 0–10 V or 4–20 mA current-loop outputs exposed to EFT bursts (IEC 61000-4-4). Use Value: Clamps fast transients within 1 ns response time while adding <1 pF capacitance-preserving signal bandwidth up to 100 MHz. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
|
Use Scenario: Safeguarding USB-C CC and VBUS lines in portable docking stations subject to human-body-model ESD (±15 kV contact). IC Role / Device Role / Timing Role: Secondary-level TVS placed after common-mode choke to absorb residual surges bypassing front-end filtering. Use Value: Delivers 1500 W surge capacity with 18.2 V clamping-below USB PD 3.0 VBUS overvoltage lockout threshold of 20 V. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers from lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Symmetrical bidirectional clamp across differential pair (tip/ring) to suppress mode-common transients. Use Value: Matches telecom line impedance without skew; maintains signal integrity due to matched breakdown thresholds (±0.65 V tolerance). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CAHE3_A/H | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Suitable for space-constrained consumer electronics with lower surge threat levels (e.g., IEC 61000-4-2 ESD only) | Select when board area is critical and surge energy does not exceed 600 W; verify thermal derating at 150 °C ambient. |
| SMCJ11CAHM3_A/H | Identical electrical specs; halogen-free molding compound and JEDEC JESD201 Class 2 whisker resistance | Required for RoHS-compliant industrial equipment with halogen-free material mandates (e.g., EU medical devices) | Choose when compliance with halogen-free standards (IEC 61249-2-21) is mandatory; no electrical or layout impact. |
Compared with SMCJ11CAHE3_A/H, SMBJ11CAHE3_A/H trades surge robustness for compactness, while SMCJ11CAHM3_A/H offers identical protection with enhanced material compliance-enabling direct substitution where halogen content or footprint drive final BOM decisions.
Availability
SMCJ11CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB-C power delivery systems, and telecom line card designs requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ11CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term parametric stability are critical.
FAQ
What is the clamping voltage of SMCJ11CAHE3_A/H at its rated peak pulse current?
The SMCJ11CAHE3_A/H has a maximum clamping voltage (VC) of 18.2 V at 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 and reflects worst-case voltage seen by protected circuitry during standardized surge testing. The SMCJ11CAHE3_A/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), making it suitable for under-hood automotive use.
Is SMCJ11CAHE3_A/H suitable for protecting CAN bus lines?
Yes, SMCJ11CAHE3_A/H is well-suited for CAN FD and classical CAN bus protection due to its bidirectional symmetry, low clamping ratio (1.65), and minimal junction capacitance (~100 pF at 0 V). Its 11 V standoff voltage aligns with typical CAN common-mode range (±36 V), and the 1500 W surge rating exceeds ISO 11898-2 transient immunity requirements. The SMCJ11CAHE3_A/H is commonly deployed across CANH/CANL differential pairs in automotive ECUs and industrial gateways.
Does SMCJ11CAHE3_A/H require a heatsink for standard operation?
No, SMCJ11CAHE3_A/H does not require an external heatsink for transient suppression duty cycles, as its 1500 W rating applies to non-repetitive pulses (e.g., ESD, lightning, load dump). For continuous power dissipation, its 6.5 W rating at TA = 50 °C assumes mounting on 8.0 mm × 8.0 mm copper pads per terminal. Thermal resistance is 75 °C/W junction-to-ambient (RθJA) and 15 °C/W junction-to-lead (RθJL), enabling adequate self-cooling in typical SMT layouts without added thermal mass.
How does the AEC-Q101 qualification of SMCJ11CAHE3_A/H impact its use in non-automotive applications?
The AEC-Q101 qualification of SMCJ11CAHE3_A/H validates its robustness against temperature cycling, high-temperature reverse bias, and mechanical shock-making it highly reliable even in demanding non-automotive settings like industrial motor drives or outdoor telecom equipment. While not required outside automotive, this qualification provides measurable assurance of long-term parameter stability and reduced infant mortality. Engineers selecting SMCJ11CAHE3_A/H for industrial designs benefit from its proven ruggedness without design overhead.
What is the meaning of the "HE3" and "_A/H" suffixes in SMCJ11CAHE3_A/H?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability. The "_A/H" denotes packaging: "A" is the revision code, and "H" specifies 7-inch tape-and-reel delivery with 850 units per reel. This ordering format aligns with Vishay's preferred part numbering system for automotive-grade SMCJ devices and ensures traceability to qualified manufacturing lots and material specifications for SMCJ11CAHE3_A/H.
SMCJ11CAHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ11CAHE3_A/H FAQ
1.How can I place an order for SMCJ11CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11CAHE3_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 SMCJ11CAHE3_A/H reliable?
The price and inventory of SMCJ11CAHE3_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 SMCJ11CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ11CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11CAHE3_A/H?
SMCJ11CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11CAHE3_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 SMCJ11CAHE3_A/H?
For technical support, including SMCJ11CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ11CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ11CAHE3_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 SMCJ11CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ11CAHE3_A/H?
All SMCJ11CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11CAHE3_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 SMCJ11CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ11CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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