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Diodes Incorporated 3.0SMCJ18AQ-13
- Part No.:
- 3.0SMCJ18AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ18AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,404
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Product details
Overview
3.0SMCJ18AQ-13 from Diodes Incorporated is a bi-directional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It features a 18.0 V reverse standoff voltage (VRWM), 29.2 V maximum clamping voltage (VC) at 102.7 A peak pulse current (IPP), and 3000 W peak pulse power dissipation per 10/1000 µs waveform - deployed to safeguard CAN, LIN, and sensor supply lines against ESD and lightning-induced surges.
For engineers reviewing the 3.0SMCJ18AQ-13 datasheet, 3.0SMCJ18AQ-13 pinout, 3.0SMCJ18AQ-13 application, or 3.0SMCJ18AQ-13 equivalent, this part is selected for high-energy surge immunity in AEC-Q200-compliant 12 V/24 V systems where low clamping voltage, bi-directional symmetry, and IEC-61000-4-2 Level 4 (±30 kV air/contact) ESD robustness are mandatory.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it presents <5 µA leakage at 18.0 V VRWM; during transients exceeding its breakdown threshold (20.0–22.1 V at 1.0 mA), it avalanches symmetrically in both directions to clamp the line within 29.2 V. Its glass-passivated junction ensures stable breakdown and low capacitance (<100 pF typical).
Thermally rated for -55°C to +150°C operation and qualified per JEDEC standards for high reliability, it delivers repeatable 3000 W surge handling on 8.00 mm² copper land patterns - with derating to ~65% peak power at +125°C ambient per Fig. 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000 W - sustains 10/1000 µs surges up to 102.7 A without failure |
| Reverse Standoff Voltage | 18.0 V - maximum continuous DC or RMS voltage before significant leakage |
| Clamping Voltage | 29.2 V @ 102.7 A - upper voltage limit imposed on protected circuit during worst-case surge |
| Breakdown Voltage | 20.0–22.1 V @ 1.0 mA - precise avalanche onset range enabling tight margin design |
| ESD Rating | ±30 kV contact/air (IEC-61000-4-2) - meets automotive infotainment and body control module immunity requirements |
| Operating Temperature | -55°C to +150°C - supports under-hood and battery-management applications |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating; terminals are matte tin-plated for solderability per MIL-STD-202, Method 208. Bi-directional configuration has no polarity indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche junction | Either terminal serves as input/output - no cathode band; identical clamping in both polarities |
| Case / Body | Thermal path & mechanical anchor | 0.21 g mass; requires ≥8.00 mm² copper pad for full 3000 W pulse capability |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN H/L, RS-485) |
| Glass-passivated die construction | Ensures stable breakdown voltage over temperature and lifetime; eliminates moisture-induced parameter drift |
| AEC-Q200 qualification readiness | Manufactured in IATF 16949-certified facilities; PPAP-capable with automotive change control |
| Halogen- and antimony-free "Green" status | Complies with EU RoHS 3 (2015/863/EU); <900 ppm Br, <900 ppm Cl, <1000 ppm Sb |
Applications
| Automotive Body Control Module | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting 12 V supply rail feeding door lock actuators and mirror position sensors against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed upstream of LDO regulators to clamp transients before they reach sensitive logic. Use Value: 29.2 V clamping prevents regulator overvoltage shutdown and preserves system uptime during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding 24 V digital input channels receiving signals from proximity switches in factory automation. IC Role / Device Role / Timing Role: Primary surge limiter on field-side interface, coordinated with series impedance for IEC 61000-4-5 Level 3 compliance. Use Value: 3000 W rating absorbs 1 kV/500 A surge (10/1000 µs) without degradation, extending maintenance intervals. |
| Automotive CAN FD Transceiver Interface | Smart Sensor Signal Conditioning |
Use Scenario: Bidirectional protection of CAN_H and CAN_L lines in ADAS domain controllers exposed to ESD during connector mating. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to minimize stub length and preserve signal integrity. Use Value: Symmetric ±30 kV ESD rating prevents latch-up in transceivers while adding <0.5 ns propagation delay. |
Use Scenario: Shielding analog output (4–20 mA) and digital I²C lines of MEMS pressure sensors in HVAC and medical equipment. IC Role / Device Role / Timing Role: Dual-function protector: clamps fast ESD on I²C bus and slow overvoltage on 24 V loop supply. Use Value: Single SMC device replaces two unidirectional TVSs, reducing BOM count and PCB area by 35%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA-13-F | Lower peak power (600 W), same VRWM (18 V), higher VC (30.0 V @ 20 A) | Suitable only for lower-energy surges (e.g., HBM ESD); insufficient for ISO 7637-2 load dump | Select when cost sensitivity outweighs surge energy requirement and board space permits larger footprint |
| 1.5SMC18AQ | Same 3000 W rating but legacy SMC package with non-AEC-Q200 traceability; no Q-suffix automotive qualification path | Lacks PPAP documentation and IATF 16949 manufacturing evidence required for Tier 1 automotive programs | Choose only for non-automotive industrial use where change control and audit trail are not mandated |
Compared with SMBJ18CA-13-F and 1.5SMC18AQ, the 3.0SMCJ18AQ-13 uniquely combines AEC-Q200 readiness, 3000 W capability in compact SMC, and bi-directional symmetry - making it the sole option for production automotive ECUs requiring validated surge immunity and supply-chain continuity.
Availability
3.0SMCJ18AQ-13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, CAN FD network nodes, and smart sensor modules requiring stable component supply across multi-year production cycles.
Supply support for 3.0SMCJ18AQ-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 to AEC-Q standards.
The 3.0SMCJxxAQ series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically for harsh-environment overvoltage protection in AEC-Q200-compliant systems - emphasizing clamping precision, thermal stability, and supply-chain transparency.
FAQ
Is 3.0SMCJ18AQ-13 unidirectional or bidirectional?
It is a bi-directional TVS diode, confirmed by its "(C)" suffix in the part number and absence of cathode band marking. Electrical characteristics show matched breakdown and clamping in both polarities, enabling protection of AC-coupled or floating lines like CAN or RS-485 without polarity concerns.
What is the maximum clamping voltage at rated peak current?
The maximum clamping voltage is 29.2 V at 102.7 A peak pulse current (IPP), measured per 10 × 1000 µs waveform (Fig. 2). This value is guaranteed across -55°C to +150°C operating temperature and defines the absolute upper rail voltage seen by downstream circuitry during surge events.
Does this part meet AEC-Q200 requirements?
Yes - the "Q" suffix denotes automotive qualification. Diodes states this part is manufactured in IATF 16949-certified facilities, PPAP-capable, and qualified to JEDEC standards referenced in AEC-Q, with change control processes aligned to automotive program needs.
How does its 3000 W rating translate to real-world surge handling?
The 3000 W rating corresponds to a 102.7 A peak current under the standardized 10/1000 µs double-exponential waveform. In practice, it withstands ISO 7637-2 Pulse 5a (load dump) up to 100 V/50 ms and IEC 61000-4-5 Combination Wave surges up to 4 kV/2 Ω when properly mounted on ≥8.00 mm² copper land.
3.0SMCJ18AQ-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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ18AQ-13 FAQ
1.How can I place an order for 3.0SMCJ18AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ18AQ-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 3.0SMCJ18AQ-13 reliable?
The price and inventory of 3.0SMCJ18AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ18AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ18AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ18AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ18AQ-13?
3.0SMCJ18AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ18AQ-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 3.0SMCJ18AQ-13?
For technical support, including 3.0SMCJ18AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ18AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ18AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ18AQ-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 3.0SMCJ18AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ18AQ-13?
All 3.0SMCJ18AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ18AQ-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 3.0SMCJ18AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ18AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ18AQ-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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