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Diodes Incorporated SMCJ20CAQ-13-F
- Part No.:
- SMCJ20CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ20CAQ-13-F.pdf
- Description:
- TVS DIODE 20VWM 32.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,080
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Product details
Overview
SMCJ20CAQ-13-F from Diodes Incorporated is a bidirectional 1,500W automotive transient voltage suppressor (TVS) in SMC package, with 20V reverse standoff voltage (VRWM), 32.4V max clamping voltage (VC) at 46.3A peak pulse current (IPP), and AEC-Q101 qualification for ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD protection in vehicle power line and infotainment interfaces.
For engineers reviewing the SMCJ20CAQ-13-F datasheet, SMCJ20CAQ-13-F pinout, SMCJ20CAQ-13-F application, or SMCJ20CAQ-13-F equivalent, key selection criteria include clamping performance under 10/1000μs surge, bidirectional polarity for AC-coupled lines, thermal derating above +25°C ambient, and compliance with automotive change control and PPAP requirements.
Technical Context
This bidirectional TVS diode operates symmetrically across both polarities, enabling protection of differential or AC signal paths without polarity constraints. Its glass-passivated die ensures stable breakdown behavior and low leakage (<5µA at VRWM), while the 10/1000μs waveform-defined clamping response guarantees predictable energy handling during ISO7637-2 transients.
The device's 200A IFSM rating supports robust surge tolerance under repetitive 8.3ms half-sine surges, and its -55°C to +150°C operating junction temperature range aligns with under-hood automotive environments. Thermal derating begins above +25°C ambient, with PM(AV) dropping to 5W at TL = +75°C per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PPK | 1500W peak pulse power - handles ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V) without failure |
| VRWM | 20V reverse standoff - blocks normal 12V/24V system voltages while remaining inactive until surge onset |
| VC @ IPP | 32.4V max clamping at 46.3A - limits downstream IC voltage stress below 33V during 10/1000μs transients |
| IFSM | 200A surge current - withstands multiple 8.3ms half-sine surges at rated load without degradation |
| TJ Range | -55°C to +150°C - certified for engine bay, transmission control, and ADAS ECU mounting locations |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronics including HTOL, TCT, and HAST |
Pinout & Package
Package: SMC (DO-214AB), surface-mount molded plastic body with UL 94V-0 flammability rating, 0.21g mass, cathode band omitted due to bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Both terminals function identically - no polarity sensitivity enables placement on AC lines or differential buses |
| Case (exposed pad) | Thermal conduction path | Integral copper slug transfers heat to PCB copper pour; requires minimum 100mm² thermal pad for full 5W PM(AV) dissipation |
Key Features
| Feature | Design Value |
|---|---|
| 1,500W peak pulse power | Enables single-device protection against worst-case ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V) without cascaded clamping |
| Glass-passivated die | Ensures stable VBR over lifetime and eliminates parameter drift under thermal cycling in automotive applications |
| AEC-Q101 qualification | Validates reliability for automotive production use, including PPAP documentation support and IATF 16949 manufacturing traceability |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive ELV Directive requirements with <900ppm Br, <900ppm Cl, <1000ppm Sb |
Applications
| Body Control Module (BCM) Power Input | Automotive Infotainment Display Interface |
|---|---|
Use Scenario: 12V supply line to BCM exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device limiting transient voltage to ≤32.4V during ISO7637-2 Pulse 1 (-100V) and Pulse 2a (+50V). Use Value: Prevents latch-up or gate oxide damage in MCU power management ICs by maintaining rail voltage within safe operating area during surges. | Use Scenario: LVDS or FPD-Link III video interface between head unit and display panel. IC Role / Device Role / Timing Role: Bidirectional clamping on differential pairs to suppress ESD per ISO10605 (±30kV air/contact) without distorting high-speed signals. Use Value: Maintains signal integrity up to 3Gbps by minimizing capacitance (typ. 100pF at 0V) and avoiding DC bias shift on AC-coupled lines. |
| Electric Power Steering (EPS) Motor Driver | ADAS Camera Module Power Line |
Use Scenario: H-bridge driver supply input subject to inductive kickback and battery reversal events. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) bidirectional clamp absorbing 200A IFSM surges without thermal runaway. Use Value: Eliminates need for external series resistors or RC snubbers, reducing BOM count while meeting ASIL-B functional safety requirements. | Use Scenario: 5V or 12V camera module power rail exposed to hot-plug transients and cable discharge events. IC Role / Device Role / Timing Role: Secondary overvoltage protection stage after upstream DC/DC converter, clamping to 32.4V before image sensor ICs. Use Value: Extends MTBF by preventing cumulative degradation of CMOS image sensors during repeated 10/1000μs surges in autonomous driving systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC20C-TB | Same 20V VRWM, but 1000W PPK and 27.5V VC @ 36.4A - lower clamping but reduced surge margin | Limited to less severe ISO7637-2 Pulse 2a/3b; not validated for Pulse 1 (-100V) or Pulse 3a (-150V) | Select only when board space or cost constraints prevent SMCJ20CAQ-13-F use and surge severity is confirmed lower. |
| SMCJ20A-Q | Unidirectional version - same VRWM, VC, and PPK but asymmetric conduction (cathode/anode polarity required) | Requires correct orientation on DC rails; unsuitable for AC-coupled or differential signal lines | Choose only for unidirectional 12V/24V supply protection where polarity is fixed and layout allows orientation control. |
Compared with SAC20C-TB and SMCJ20A-Q, SMCJ20CAQ-13-F delivers superior surge immunity (1500W vs. 1000W), verified bidirectional operation for flexible routing, and full ISO7637-2 Pulse 1/3a compliance - making it the preferred choice for safety-critical automotive power and data interfaces.
Availability
SMCJ20CAQ-13-F is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera power systems, and infotainment display interfaces requiring stable component supply, AEC-Q101 traceability, and PPAP-ready documentation.
Supply support for SMCJ20CAQ-13-F 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 design, manufacturing, and test facilities certified to IATF 16949 for automotive-grade components.
The SMCJ series is part of Diodes' AEC-Q101-qualified TVS portfolio engineered specifically for automotive power line and data interface surge protection, targeting ISO7637-2 and ISO10605 compliance in harsh vehicle environments.
FAQ
What does the 'C' suffix in SMCJ20CAQ-13-F signify?
The 'C' denotes bidirectional configuration, meaning the device clamps symmetrically for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SMCJ20AQ-13-F), it has no cathode band and can be placed without polarity consideration on AC-coupled or differential signal lines.
Is SMCJ20CAQ-13-F compliant with RoHS 3 and automotive ELV directives?
Yes - it meets EU RoHS 3 (2015/863/EU) with lead-free matte tin plating and is halogen- and antimony-free ("Green"), containing <900ppm bromine, <900ppm chlorine, and <1000ppm antimony compounds, satisfying automotive End-of-Life Vehicle Directive requirements.
How does thermal derating affect steady-state power dissipation?
PM(AV) is 5.0W at TL = +75°C, but derates linearly to zero at +150°C junction temperature. At +100°C lead temperature, PM(AV) drops to ~3.3W. Effective thermal design requires ≥100mm² copper pour under the SMC package to maintain rated power under continuous surge conditions.
Can SMCJ20CAQ-13-F replace SMCJ20A-Q in existing designs?
Yes, electrically - both share identical VRWM (20V), VC (32.4V), and PPK (1500W). However, SMCJ20CAQ-13-F is bidirectional and lacks polarity marking, so layout must accommodate symmetrical placement; no reorientation or schematic changes are needed for AC or differential applications.
SMCJ20CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 46.3A
- 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:
- SMC
SMCJ20CAQ-13-F FAQ
1.How can I place an order for SMCJ20CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ20CAQ-13-F 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 SMCJ20CAQ-13-F reliable?
The price and inventory of SMCJ20CAQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ20CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ20CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ20CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ20CAQ-13-F?
SMCJ20CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ20CAQ-13-F 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 SMCJ20CAQ-13-F?
For technical support, including SMCJ20CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ20CAQ-13-F requirements.
6.How does Aetrix verify that SMCJ20CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ20CAQ-13-F 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 SMCJ20CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ20CAQ-13-F?
All SMCJ20CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ20CAQ-13-F, 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 SMCJ20CAQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ20CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ20CAQ-13-F Tags
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ESD9B5.0ST5G
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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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onsemi
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Diodes Incorporated
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Diodes Incorporated
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