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Diodes Incorporated 3.0SMCJ20CAQ-13
- Part No.:
- 3.0SMCJ20CAQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ20CAQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:4,390
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Product details
Overview
3.0SMCJ20CAQ-13 from Diodes Incorporated is a bi-directional 3000W surface-mount transient voltage suppressor (TVS) designed for automotive power line protection. It features a 20V reverse standoff voltage (VRWM), 32.4V max clamping voltage (VC) at 92.6A peak pulse current (IPP), and AEC-Q101 qualification for under-hood engine control unit (ECU) and body control module (BCM) surge suppression.
For engineers reviewing the 3.0SMCJ20CAQ-13 datasheet, 3.0SMCJ20CAQ-13 pinout, 3.0SMCJ20CAQ-13 application, or 3.0SMCJ20CAQ-13 equivalent, this device delivers ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD-compliant clamping performance in SMC package with bi-directional symmetry - critical for bidirectional CAN/LIN bus line protection and 12V/24V automotive supply rail hardening.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding to transients within nanoseconds via avalanche breakdown. Its bi-directional structure enables symmetrical clamping on both polarities without external polarity management, supporting robust protection of differential interfaces like CAN FD and LIN against load dump and inductive switching spikes.
Thermal design leverages the SMC package's 0.21g mass and UL 94V-0 molded plastic body, with junction temperature rated from –55°C to +175°C and moisture sensitivity level 1. Derating curves confirm stable 3000W peak pulse power up to +125°C ambient when mounted on 8.00 mm² copper land patterns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains ISO7637-2 Pulse 1 (–150V) and Pulse 3b (+150V) without failure |
| Reverse Standoff Voltage | 20V - defines maximum continuous DC operating voltage before clamping initiates |
| Max Clamping Voltage | 32.4V @ 92.6A - limits downstream IC voltage stress during 10/1000μs surge events |
| Peak Pulse Current | 92.6A - supports full-energy ISO7637-2 Pulse 2a (+112V) and Pulse 3a (–220V) |
| Leakage Current | <2µA @ 20V - ensures negligible standby power loss in always-on automotive modules |
| Breakdown Voltage | 22.2–24.5V @ 1mA - guarantees reliable turn-on margin above VRWM with tight process control |
| AEC-Q101 Qualified | Validated for automotive use - includes HTOL, TCT, ESD, and mechanical stress testing per IATF16949 |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bi-directional configuration with cathode band omitted - terminals are symmetrical anode/cathode pair. Moisture sensitivity level 1; RoHS-compliant matte tin plating; weight ≈ 0.21 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Surge return path (bidirectional) | Connects to protected line; conducts during negative transients and positive transients on opposite terminal |
| Cathode (Terminal 2) | Surge return path (bidirectional) | Connects to protected line; conducts during positive transients and negative transients on opposite terminal |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse rating | Enables single-device protection against full ISO7637-2 load dump and alternator surge events |
| Bi-directional clamping symmetry | Eliminates need for dual unidirectional devices on differential buses like CAN or LIN |
| 32.4V clamping at 92.6A | Keeps protected 24V system ICs (e.g., SBCs, CAN transceivers) below absolute maximum ratings |
| AEC-Q101 qualification & PPAP capability | Meets OEM requirements for production release in safety-critical automotive ECUs and ADAS modules |
| Halogen- and antimony-free "Green" construction | Complies with automotive ELV Directive and supports end-of-life recycling mandates |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protects microcontroller power rails and sensor inputs from alternator load dump and starter motor kickback. IC Role / Device Role / Timing Role: Shunt clamping TVS placed between 12V main supply and ground, activated within <1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤32.4V, preventing latch-up or gate oxide damage in 3.3V/5V automotive MCUs and analog front-ends. |
Use Scenario: Shields LIN bus transceivers and door module switches from ESD and battery disconnect surges. IC Role / Device Role / Timing Role: Bi-directional line protector across LIN signal and VBAT lines, symmetrically clamping ±220V pulses. Use Value: Maintains LIN physical layer integrity per ISO17987-2 by suppressing >30kV contact discharge without signal distortion. |
| CAN FD Network Node | Advanced Driver Assistance System (ADAS) Camera Power Input |
|
Use Scenario: Safeguards high-speed CAN FD transceivers from coupled transients on shared vehicle power domains. IC Role / Device Role / Timing Role: Common-mode TVS on CAN_H/CAN_L pair referenced to chassis ground, clamping differential and common-mode spikes. Use Value: Prevents bit errors and bus-off conditions during ISO7637-2 Pulse 3b (+150V) by holding differential voltage within transceiver tolerance. |
Use Scenario: Hardens 12V input to image sensor SoCs against ignition noise and EMI-induced surges in rear-view cameras. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converter, absorbing 3000W pulses before regulation stage. Use Value: Extends camera module lifetime by eliminating thermal runaway in buck controller ICs during repeated load dump events. |
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 |
|---|---|---|---|
| SMBJ20CA | 2000W peak power, SMB package, same VRWM/VC but lower IPP (64.9A) | Limited to lower-energy ISO7637-2 Pulse 2a/3b; unsuitable for full-load-dump scenarios | Select when board space is constrained and surge energy is capped at ≤2000W |
| 1.5SMCJ20CA | 1500W peak power, same SMC footprint but derated power handling | Cannot sustain ISO7637-2 Pulse 1 (–150V) without degradation; requires parallel staging | Use only in non-safety-critical infotainment subsystems with verified lower surge exposure |
Compared with SMBJ20CA and 1.5SMCJ20CA, the 3.0SMCJ20CAQ-13 provides 50% higher peak power margin and AEC-Q101-specific qualification - making it the sole choice for ASIL-B compliant power rail protection where single-point failure must be avoided.
Availability
3.0SMCJ20CAQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, CAN FD network nodes, and ADAS camera power inputs requiring stable component supply across multi-year automotive production cycles.
Supply support for 3.0SMCJ20CAQ-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 for automotive, industrial, and computing markets, with manufacturing certified to IATF16949.
This device belongs to Diodes' AEC-Q101-qualified 3.0SMCJ series - engineered specifically for automotive-grade transient suppression in harsh environments where reliability, thermal stability, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of 3.0SMCJ20CAQ-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 32.4V at 92.6A peak pulse current (IPP), measured using the standardized 10 × 1000μs waveform per Figure 4 in DS40742 Rev. 12–2. This value is guaranteed across the full operating temperature range (–55°C to +175°C) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is 3.0SMCJ20CAQ-13 suitable for protecting CAN FD bus lines?
Yes - its bi-directional architecture, 32.4V clamping, and 3000W rating make it appropriate for common-mode protection on CAN FD differential pairs. It meets ISO11898-2 immunity requirements when placed across CAN_H/CAN_L to ground, provided layout minimizes parasitic inductance and maintains balanced trace routing.
How does the "AQ" suffix impact automotive qualification?
The "AQ" suffix denotes AEC-Q101 qualification, PPAP capability, and manufacture in IATF16949-certified facilities. Unlike standard industrial variants, AQ parts undergo extended reliability testing including HTOL, temperature cycling, and ESD verification - ensuring suitability for production automotive ECUs and ADAS systems.
Can 3.0SMCJ20CAQ-13 replace unidirectional TVS diodes in existing designs?
No - it is bi-directional and lacks polarity marking; substituting it for a unidirectional part (e.g., 3.0SMCJ20AQ-13) would compromise protection on DC-biased lines. For unidirectional applications, use the non-C variant; for bidirectional or AC-coupled lines like CAN, the C version is required.
3.0SMCJ20CAQ-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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
3.0SMCJ20CAQ-13 FAQ
1.How can I place an order for 3.0SMCJ20CAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ20CAQ-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 3.0SMCJ20CAQ-13 reliable?
The price and inventory of 3.0SMCJ20CAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ20CAQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ20CAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ20CAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ20CAQ-13?
3.0SMCJ20CAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ20CAQ-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 3.0SMCJ20CAQ-13?
For technical support, including 3.0SMCJ20CAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ20CAQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ20CAQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ20CAQ-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 3.0SMCJ20CAQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ20CAQ-13?
All 3.0SMCJ20CAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ20CAQ-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 3.0SMCJ20CAQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ20CAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ20CAQ-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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