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Diodes Incorporated 3.0SMCJ22CAQ-13
- Part No.:
- 3.0SMCJ22CAQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ22CAQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
3.0SMCJ22CAQ-13 from Diodes Incorporated is a bi-directional automotive-grade transient voltage suppressor (TVS) diode in SMC package, rated for 3000W peak pulse power, 22V reverse standoff voltage (VRWM), and 35.5V max clamping voltage (VC) at 84.5A IPP. It protects CAN, LIN, and power supply lines in engine control units and body electronics against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD surges.
For engineers reviewing the 3.0SMCJ22CAQ-13 datasheet, 3.0SMCJ22CAQ-13 pinout, 3.0SMCJ22CAQ-13 application, or 3.0SMCJ22CAQ-13 equivalent, key selection criteria include AEC-Q101 qualification, bi-directional clamping symmetry, 300A IFSM surge rating, and compliance with automotive surge immunity standards-critical for under-hood and infotainment system design.
Technical Context
This TVS operates as a voltage-clamped shunt protector: during transients exceeding VRWM = 22V, it avalanches symmetrically in both directions to clamp voltage at ≤35.5V (per 10×1000μs waveform), diverting up to 84.5A peak pulse current. Its bi-directional structure eliminates polarity dependency in AC-coupled or differential signal lines like CAN FD physical layer interfaces.
Thermally rated for TJ = –55°C to +175°C and qualified per AEC-Q101, it sustains repeated 8.3ms half-sine surges (≤4 pulses/minute) on 8mm² copper land, with derating above +25°C ambient. The SMC package provides low thermal resistance and meets IATF16949 manufacturing controls for automotive production traceability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - Sustains 10×1000μs transients without failure; enables protection of 12V/24V automotive power rails against load dump and inductive switching events. |
| Reverse Standoff Voltage | 22V - Stable blocking threshold below system nominal voltage; prevents leakage during normal operation while allowing fast response to overvoltage. |
| Max Clamping Voltage | 35.5V @ 84.5A - Limits voltage seen by downstream ICs (e.g., CAN transceivers) during ISO7637-2 Pulse 1/2a/3a/3b; ensures safe margin below 40V absolute maximum ratings. |
| Breakdown Voltage | 24.4–27.0V @ 1mA - Tight VBR tolerance (±10%) guarantees consistent avalanche initiation across temperature and unit-to-unit variation. |
| Peak Forward Surge Current | 300A @ 8.3ms - Withstands high-energy single-event surges such as alternator load dump without bond wire fusing. |
| Operating Temperature | –55°C to +175°C - Validated for under-hood placement near engines and transmission control modules where ambient exceeds 125°C. |
| AEC-Q101 Qualified | Yes - Certified for automotive use with PPAP documentation support; manufactured in IATF16949-certified facilities with full change control. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic with UL 94V-0 flammability rating; moisture sensitivity level 1 (J-STD-020); weight ≈0.21g; cathode band absent (bi-directional device).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche terminals | No polarity marking; either terminal serves as anode or cathode depending on transient polarity-enables drop-in replacement in differential or AC-coupled paths without layout revision. |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse power | Enables robust protection of 12V/24V automotive subsystems against high-energy transients defined in ISO7637-2 Pulse 1 (–150V) and Pulse 3a (–220V) without derating. |
| Bi-directional clamping | Eliminates need for dual unidirectional devices in differential buses (e.g., CAN H/L), reducing BOM count and PCB area while maintaining symmetrical surge response. |
| AEC-Q101 qualification & PPAP capability | Supports automotive Tier-1 production release with full test data packages, change notification, and IATF16949 traceability for serial number-level lot tracking. |
| RoHS 3 & Halogen-free | Complies with EU Directive 2015/863/EU and Diodes' "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb); suitable for global OEM environmental compliance programs. |
Applications
| Engine Control Unit (ECU) | CAN FD Interface Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and power supply inputs in gasoline/diesel ECUs exposed to load dump, alternator ripple, and relay coil flyback. IC Role / Device Role / Timing Role: Shunt clamping TVS placed at power entry and sensor interface points to limit transient voltage before reaching MCU LDOs or analog front-ends. Use Value: Maintains system uptime by preventing latch-up or permanent damage during ISO7637-2 Pulse 1 (–150V) and Pulse 2a (+112V) events. |
Use Scenario: Installed across CAN_H and CAN_L lines in ADAS domain controllers to suppress ESD and bus coupling noise. IC Role / Device Role / Timing Role: Bi-directional voltage clamp that responds within nanoseconds to ±30kV contact discharge (ISO10605) without distorting 5Mbps FD signaling integrity. Use Value: Preserves bit error rate (BER) by clamping transients to ≤35.5V-well below CAN transceiver absolute max ratings-while adding <0.5pF parasitic capacitance. |
| Body Control Module (BCM) | Infotainment Power Rail Protection |
Use Scenario: Shields LIN bus transceivers and door module actuators from battery reversal and jump-start surges in vehicle body electronics. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V input rail feeding LIN master ICs and motor drivers; placed upstream of DC-DC converters. Use Value: Survives repetitive 8.3ms surges (4/min max) per ISO7637-2 Pulse 3b (+150V), enabling >15-year field reliability in door latch and mirror control circuits. |
Use Scenario: Guards 5V/3.3V power domains supplying head unit processors, display drivers, and USB-C PD controllers against conducted transients. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary fuse and common-mode choke; clamps residual spikes passing through front-end filtering. Use Value: Prevents brownout resets and flash memory corruption during ignition-on transients by limiting rail excursions to <10% above nominal voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | 2000W PPK, same VRWM/VC, SMB package (smaller footprint, lower IFSM = 200A) | Limited to lower-energy transients (e.g., interior modules); not recommended for engine bay due to thermal derating limitations. | Select when space-constrained and surge energy is limited to ISO10605 only-not for ISO7637-2 Pulse 1/3a. |
| 1.5SMCJ22CA | 1500W PPK, same VRWM/VC, identical SMC package but lower surge rating | Insufficient for load dump protection; suitable only for ESD-only zones (e.g., touchscreens, USB ports). | Choose only for cost-sensitive non-critical subsystems where 3000W rating is unnecessary and AEC-Q101 is not mandated. |
Compared with SMBJ22CA and 1.5SMCJ22CA, the 3.0SMCJ22CAQ-13 delivers 50% higher peak power and full ISO7637-2 Pulse 1/3a compliance in the same SMC footprint-making it the sole option for under-hood power rail protection requiring AEC-Q101 and PPAP support.
Availability
3.0SMCJ22CAQ-13 is available at Aetrix Electronics and suitable for engine control units, CAN FD communication nodes, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for 3.0SMCJ22CAQ-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The 3.0SMCJ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for ISO7637-2 and ISO10605 compliance in harsh environment applications-from powertrain to infotainment systems.
FAQ
What does the 'C' suffix in 3.0SMCJ22CAQ-13 indicate?
The 'C' denotes bi-directional configuration: the device clamps symmetrically for both positive and negative transients, with no anode/cathode distinction. This enables use in AC-coupled or differential signal paths like CAN bus without polarity concerns, unlike unidirectional variants (e.g., 3.0SMCJ22AQ-13) which require correct orientation.
Is 3.0SMCJ22CAQ-13 compatible with lead-free reflow soldering processes?
Yes-it features matte tin lead-free plating compliant with JEDEC J-STD-020 moisture sensitivity level 1, supporting standard Pb-free reflow profiles (peak 260°C). The SMC package's thermal mass allows reliable wetting without delamination, and its UL 94V-0 molding compound withstands multiple reflow cycles.
How does the 3000W rating translate to real-world surge handling?
The 3000W rating is specified for a 10×1000μs waveform per IEC 61000-4-5 and ISO7637-2. At VRWM = 22V, this corresponds to 84.5A peak current clamped at 35.5V. It reliably suppresses worst-case load dump (Pulse 1: –150V, 50Ω source) and inductive kick events in 12V systems without degradation over 1000+ surge cycles.
Does this TVS require external series impedance for optimal performance?
No external resistor is required for basic clamping, but a series ferrite bead or small resistor (1–10Ω) is recommended upstream to limit di/dt and reduce ringing during fast transients (e.g., ESD). The device's low dynamic impedance (<0.5Ω) ensures rapid response; however, layout inductance dominates clamping effectiveness-keep traces short and direct to ground plane.
3.0SMCJ22CAQ-13 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 84.5A
- 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
3.0SMCJ22CAQ-13 FAQ
1.How can I place an order for 3.0SMCJ22CAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ22CAQ-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 3.0SMCJ22CAQ-13 reliable?
The price and inventory of 3.0SMCJ22CAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ22CAQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ22CAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ22CAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ22CAQ-13?
3.0SMCJ22CAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ22CAQ-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 3.0SMCJ22CAQ-13?
For technical support, including 3.0SMCJ22CAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ22CAQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ22CAQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ22CAQ-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 3.0SMCJ22CAQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ22CAQ-13?
All 3.0SMCJ22CAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ22CAQ-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 3.0SMCJ22CAQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ22CAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ22CAQ-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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