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Diodes Incorporated 3.0SMCJ28CAQ-13
- Part No.:
- 3.0SMCJ28CAQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ28CAQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,250
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Product details
Overview
3.0SMCJ28CAQ-13 from Diodes Incorporated is a bi-directional 3000W surface-mount transient voltage suppressor (TVS) designed for automotive power line protection. It features a 28V reverse standoff voltage (VRWM), 45.4V max clamping voltage (VC) at 66.1A peak pulse current (IPP), and AEC-Q101 qualification for under-hood applications including engine control units and body electronics.
For engineers reviewing the 3.0SMCJ28CAQ-13 datasheet, 3.0SMCJ28CAQ-13 pinout, 3.0SMCJ28CAQ-13 application, or 3.0SMCJ28CAQ-13 equivalent, key selection criteria include ISO7637-2 Pulse 1/2a/3a/3b compliance, bi-directional surge handling capability, SMC package thermal performance, and clamping voltage margin relative to protected IC rail voltages.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector in parallel with sensitive loads. Its bi-directional construction enables symmetrical suppression of both positive and negative transients without polarity dependency, critical for 12V/24V automotive battery line protection where load dump and reverse-battery events coexist.
It delivers 3000W peak pulse power per 10×1000μs waveform, with thermal derating above +25°C ambient and a -55°C to +175°C operating junction temperature range. The device meets ISO10605 ESD immunity (±30kV air/contact) and is manufactured in IATF16949-certified facilities with PPAP support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000μs surges up to 66.1A without failure |
| Reverse Standoff Voltage | 28.0V - maximum continuous DC or RMS voltage before conduction begins |
| Max Clamping Voltage | 45.4V @ 66.1A - limits transient voltage across protected circuit during worst-case ISO7637-2 Pulse 1 (-150V) |
| Breakdown Voltage | 31.1–34.4V @ 1.0mA - ensures reliable turn-on before clamping threshold is exceeded |
| Peak Forward Surge Current | 300A @ 8.3ms half-sine - handles high-energy load dump events |
| Operating Temperature | -55°C to +175°C - supports placement near engines or in under-dash modules |
| ESD Rating | ±30kV (air & contact) per ISO10605 - protects against human-body-model and machine-model discharges |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating and matte tin lead finish. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band (Marked End) | Anode Terminal (Bi-directional) | Identifies terminal orientation; bi-directional operation means both ends function identically as anode/cathode depending on transient polarity |
| Opposite End | Cathode Terminal (Bi-directional) | Electrically symmetric to marked end; no functional distinction-both terminals conduct equally during positive or negative surges |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables single-device protection against ISO7637-2 Pulse 1 (-150V) and Pulse 3a (-220V) without cascaded TVS stages |
| AEC-Q101 Qualified | Validated for automotive use with stress testing including HTOL, TCT, and ESD, supporting PPAP documentation requirements |
| Bi-directional Architecture | Eliminates need for polarity-aware layout or dual unidirectional devices in 12V/24V battery-fed systems |
| RoHS & Halogen-Free | Complies with EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb) |
| SMC Package Thermal Performance | 0.21g mass and 8.00mm² copper pad mounting enable effective heat dissipation during repetitive surge events |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Lines |
|---|---|
|
Use Scenario: Protects microcontroller power rails and analog sensor interfaces from load dump and jump-start transients on 12V battery lines. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed upstream of LDOs and DC-DC converters. Use Value: Clamps 28V VRWM system to ≤45.4V during 300A load dump, preventing overvoltage damage to 3.3V/5V logic and ADC front-ends. |
Use Scenario: Shields high-speed CAN FD transceivers from coupled transients induced by nearby solenoid switching or alternator noise. IC Role / Device Role / Timing Role: Bi-directional voltage clamp on CAN_H/CAN_L differential pair, referenced to ground. Use Value: Maintains signal integrity by limiting common-mode surges to <45.4V while preserving <1ns response time for data rates up to 5Mbps. |
| Automotive Infotainment Power Supply | ADAS Camera Module Interface |
|
Use Scenario: Guards USB-C PD and display power inputs against reverse-battery connection and cranking dips in head unit designs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5V/12V input rails feeding PMICs and SoCs. Use Value: Withstands ±30kV ESD per ISO10605 and clamps ISO7637-2 Pulse 2a (+112V) to safe levels below 50V, avoiding brownout resets. |
Use Scenario: Protects MIPI CSI-2 interface and image sensor bias supplies in rear-view and surround-view cameras exposed to harsh under-vehicle environments. IC Role / Device Role / Timing Role: Secondary surge protection stage after primary fuse and common-mode choke. Use Value: Provides 175°C junction rating and low leakage (<2µA @ 28V), ensuring reliability in sealed, thermally constrained camera housings. |
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 |
|---|---|---|---|
| SMBJ28CA | 2000W PPK, same VRWM/VC but lower IPP (43.5A), SMB package (smaller thermal mass) | Limited to lower-energy transients; unsuitable for full ISO7637-2 Pulse 1 compliance | Select when board space is constrained and surge energy is limited to ISO7637-2 Pulse 3b only |
| SMCJ28CA | Same 3000W rating and SMC package, but non-AEC-Q101; lacks PPAP documentation and automotive change control | Restricted to industrial or consumer applications; not approved for OEM automotive BOMs | Select only for non-automotive designs where AEC-Q101 certification is not required |
Compared with SMBJ28CA and SMCJ28CA, the 3.0SMCJ28CAQ-13 uniquely combines AEC-Q101 qualification, full ISO7637-2 Pulse 1/2a/3a/3b compliance, and 3000W clamping in an SMC footprint-making it the only option qualified for safety-critical automotive power rail protection with documented PPAP support.
Availability
3.0SMCJ28CAQ-13 is available at Aetrix Electronics and suitable for automotive ECU power input protection, body control module CAN bus shielding, and ADAS camera interface surge suppression requiring stable component supply across multi-year vehicle production cycles.
Supply support for 3.0SMCJ28CAQ-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 integrated circuits, specializing in high-reliability protection, power management, and signal integrity solutions for automotive and industrial markets.
The 3.0SMCJxxCAQ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically to meet stringent ISO7637-2 and ISO10605 requirements for under-hood and chassis-mounted electronics.
FAQ
What is the difference between the 'C' and non-'C' suffix in 3.0SMCJ28CAQ-13?
The 'C' suffix denotes bi-directional functionality, meaning the device clamps both positive and negative transients symmetrically across its terminals. Non-'C' variants (e.g., 3.0SMCJ28AQ-13) are unidirectional and require correct polarity placement-critical for protecting DC rails where reverse-voltage events are possible.
Does 3.0SMCJ28CAQ-13 meet ISO7637-2 Pulse 1 requirements?
Yes-it is rated for 3000W peak pulse power and clamps to 45.4V at 66.1A, enabling compliance with ISO7637-2 Pulse 1 (VS = -150V, 50Ω source impedance). This is verified per the 10×1000μs test waveform in Diodes' DS40742 datasheet Figure 4.
Can this TVS be used in parallel for higher surge current handling?
No-parallel connection is not recommended due to mismatch in dynamic impedance and breakdown voltage tolerance (±10% VBR), which causes uneven current sharing and potential thermal runaway. For higher energy, select a higher-rated part like 3.0SMCJ33CAQ-13 or implement staged protection.
What is the marking code for 3.0SMCJ28CAQ-13 on the device body?
The top-side marking is 'HFG' for the bi-directional 28V variant, followed by a date code (e.g., '523' for week 23 of 2025). This matches the Electrical Characteristics Table in DS40742 Rev. 12–2, page 2.
3.0SMCJ28CAQ-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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 66.1A
- 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
3.0SMCJ28CAQ-13 FAQ
1.How can I place an order for 3.0SMCJ28CAQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ28CAQ-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 3.0SMCJ28CAQ-13 reliable?
The price and inventory of 3.0SMCJ28CAQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ28CAQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ28CAQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ28CAQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ28CAQ-13?
3.0SMCJ28CAQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ28CAQ-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 3.0SMCJ28CAQ-13?
For technical support, including 3.0SMCJ28CAQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ28CAQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ28CAQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ28CAQ-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 3.0SMCJ28CAQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ28CAQ-13?
All 3.0SMCJ28CAQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ28CAQ-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 3.0SMCJ28CAQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ28CAQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ28CAQ-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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