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Diodes Incorporated 3.0SMCJ18CA-13
- Part No.:
- 3.0SMCJ18CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ18CA-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,951
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Product details
Overview
3.0SMCJ18CA-13 from Diodes Incorporated is a bi-directional 3000W surface-mount transient voltage suppressor (TVS) designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 18.0V reverse standoff voltage (VRWM), 20.0–22.1V breakdown voltage (VBR), 29.2V max clamping voltage (VC) at 102.7A peak pulse current (IPP), and IEC-61000-4-2 ESD immunity of 30kV (air/contact). It is used in industrial power supplies to safeguard 24V control circuitry against lightning-induced surges.
For engineers reviewing the 3.0SMCJ18CA-13 datasheet, 3.0SMCJ18CA-13 pinout, 3.0SMCJ18CA-13 application, or 3.0SMCJ18CA-13 equivalent, this page delivers verified electrical parameters, SMC package mechanical data, bi-directional terminal configuration, clamping performance under 10/1000μs transients, and direct alternatives with validated voltage and power matching.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust surge suppression without polarity constraints on AC-coupled or floating bus lines. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<5μA at VRWM), critical for low-power standby circuits.
The device complies with IEC-61000-4-2 Level 4 (30kV air/contact) and supports JEDEC-reliable operation from –55°C to +150°C. Its 3000W peak pulse rating is defined per 10×1000μs waveform, with thermal derating above +25°C per Fig. 1 - requiring PCB land area ≥8.00mm² for full-rated surge handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains single 10×1000μs transients up to 102.7A without failure |
| Reverse Standoff Voltage | 18.0V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage | 20.0–22.1V - guaranteed conduction onset at IT = 1.0mA, enabling precise overvoltage thresholding |
| Clamping Voltage | 29.2V @ IPP = 102.7A - limits downstream voltage stress during surge events |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - protects interfaces against human-body discharge |
| Operating Temperature | –55°C to +150°C - qualified for under-hood automotive and industrial ambient conditions |
| Package | SMC (DO-214AB) - surface-mount footprint with 7.75–8.13mm body length and 2.75–3.18mm thickness |
Pinout & Package
3.0SMCJ18CA-13 uses the SMC (DO-214AB) package: molded plastic body, UL 94V-0 rated, 0.21g weight, matte tin-plated leads. Bi-directional construction means no cathode band; terminals are symmetrical and non-polarized.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative surges - no orientation required during placement |
| Case / Body | Thermal mass & mechanical anchor | Plastic body transfers heat to PCB copper; requires ≥8.00mm² pad area for full 3000W rating |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection on AC lines, differential buses, or ungrounded sensors without polarity concerns |
| Glass-passivated die | Ensures ±5% VBR tolerance and <5μA IR at VRWM - critical for low-leakage 24V industrial I/O |
| JEDEC-reliable construction | Qualified to AEC-Q standards for high-reliability applications including PPAP-capable automotive designs |
| Halogen- and antimony-free | Meets "Green" definition: <900ppm Br, <900ppm Cl, <1000ppm Sb - compliant with EU RoHS 3 and automotive sustainability mandates |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: 24V digital input channels in programmable logic controllers exposed to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Primary-level TVS placed directly at connector entry to clamp transients before signal conditioning ICs. Use Value: Limits voltage to ≤29.2V during 102.7A surges, preventing damage to 3.3V/5V logic interface ICs downstream. |
Use Scenario: LIN bus transceivers and microcontroller GPIOs in door module ECUs subjected to load dump and ESD events. IC Role / Device Role / Timing Role: Bi-directional surge absorber on bidirectional LIN line and power-supply rail. Use Value: Withstands 30kV contact ESD and clamps 10×1000μs surges to safe levels without polarity reversal concerns. |
| Telecom Power Feeds | Renewable Energy Monitoring |
|
Use Scenario: 48V DC power inputs in remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage protector before DC-DC converters and PMICs. Use Value: Delivers 3000W peak dissipation with 29.2V clamping - maintains system uptime during Category C2/C3 surge events. |
Use Scenario: Sensor nodes monitoring solar panel string voltage in ungrounded PV arrays subject to ground potential rise. IC Role / Device Role / Timing Role: Floating bi-directional TVS across differential voltage sense inputs. Use Value: Symmetric clamping prevents reverse-bias damage to precision ADC front-ends during common-mode transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA-13 | Same VRWM (18V) and VBR range, but lower 600W PPK rating and SMB package | Not suitable for >600W surge environments; limited to secondary protection or low-energy interfaces | Select only when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5SMC18CA | Same 18V VRWM and bi-directional function, but 1500W PPK and legacy SMC package with different marking | Lacks IEC-61000-4-2 30kV ESD rating; not qualified to latest JEDEC reliability standards | Use only for cost-sensitive legacy designs where 3000W headroom and automotive-grade ESD are not required |
Compared with SMBJ18CA-13 and 1.5SMC18CA, the 3.0SMCJ18CA-13 provides double the surge energy handling of the SMBJ variant and 100% higher peak power than the 1.5SMC series - essential for primary protection in 24V/48V industrial and automotive power domains.
Availability
3.0SMCJ18CA-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power feed applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 3.0SMCJ18CA-13 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q standards.
This part belongs to the 3.0SMCJ family of high-power TVS diodes engineered for primary-level surge immunity in harsh-environment power and interface circuits - targeting industrial automation, automotive electronics, and renewable energy systems.
FAQ
What is the clamping voltage of 3.0SMCJ18CA-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 29.2V when subjected to a 10×1000μs transient pulse at 102.7A (IPP). This value is measured per standard REA waveform and defines the upper voltage limit imposed on protected circuitry during surge events.
Is 3.0SMCJ18CA-13 unidirectional or bidirectional, and how does that affect PCB layout?
It is bi-directional, with no cathode band or polarity marking. Both terminals are electrically identical, allowing placement in either orientation on the PCB - simplifying layout and eliminating risk of reverse installation in differential or floating signal paths.
Can 3.0SMCJ18CA-13 be used in automotive applications requiring AEC-Q200 qualification?
No - the standard 3.0SMCJ18CA-13 is not AEC-Q200 qualified. Diodes offers automotive-grade variants with Q-suffix (e.g., 3.0SMCJ18CAQ-13) manufactured in IATF 16949 facilities and tested to AEC-Q200 stress requirements.
What is the recommended PCB pad layout for achieving full 3000W surge rating?
To sustain full 3000W peak power, mount the device on 8.00mm² (minimum) copper land areas per terminal, per JEDEC test condition. The suggested SMC pad layout specifies 6.90mm × 4.40mm pads with 2.50mm spacing - ensuring adequate thermal dissipation during transient events.
3.0SMCJ18CA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- 3.0SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 102.7A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ18CA-13 FAQ
1.How can I place an order for 3.0SMCJ18CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ18CA-13 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 3.0SMCJ18CA-13 reliable?
The price and inventory of 3.0SMCJ18CA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ18CA-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ18CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ18CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ18CA-13?
3.0SMCJ18CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ18CA-13 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 3.0SMCJ18CA-13?
For technical support, including 3.0SMCJ18CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ18CA-13 requirements.
6.How does Aetrix verify that 3.0SMCJ18CA-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ18CA-13 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 3.0SMCJ18CA-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ18CA-13?
All 3.0SMCJ18CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ18CA-13, 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 3.0SMCJ18CA-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ18CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ18CA-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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