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Diodes Incorporated 3.0SMCJ12AQ-13
- Part No.:
- 3.0SMCJ12AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ12AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:3,528
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Product details
Overview
3.0SMCJ12AQ-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) designed for automotive power line protection. It features a 12V reverse standoff voltage (VRWM), 13.3V minimum breakdown voltage (VBR), 19.9V maximum clamping voltage (VC) at 150.8A peak pulse current (IPP), and AEC-Q101 qualification for under-hood applications such as engine control units and body electronics.
For engineers reviewing the 3.0SMCJ12AQ-13 datasheet, 3.0SMCJ12AQ-13 pinout, 3.0SMCJ12AQ-13 application, or 3.0SMCJ12AQ-13 equivalent, this device is selected for ISO7637-2 Pulse 1/2a/3a/3b surge suppression, ESD robustness per ISO10605 (±30kV), and high-reliability automotive circuit protection where clamping performance, thermal stability up to +175°C junction temperature, and PPAP-capable manufacturing are required.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient overvoltages on DC power rails. Its unidirectional configuration provides forward conduction path during negative transients (e.g., ISO7637-2 Pulse 1: −150V) while blocking normal forward bias operation in steady state.
It delivers 3000W peak pulse power (10×1000μs waveform), supports 300A non-repetitive surge current (8.3ms half-sine), and maintains stable clamping across −55°C to +175°C operating range - critical for automotive environments with wide thermal cycling and high EMI exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000μs transients without failure in automotive load-dump or inductive switching events |
| Reverse Standoff Voltage (VRWM) | 12.0V - defines maximum continuous DC operating voltage before leakage exceeds 2μA |
| Clamping Voltage (VC) | 19.9V @ 150.8A - limits voltage seen by downstream ICs during ISO7637-2 Pulse 1 (−150V) or Pulse 3a (−220V) |
| Breakdown Voltage (VBR) | 13.3V min @ 1.0mA - ensures reliable avalanche initiation just above nominal rail voltage |
| Junction Temperature Range | −55°C to +175°C - enables placement near heat sources (e.g., power modules, ECUs) without derating |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
Pinout & Package
Package: SMC (DO-214AB), molded plastic, UL 94V-0 rated, 0.21g weight, moisture sensitivity level 1. Cathode band denotes terminal polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance chassis return to complete clamping loop during negative surges |
| Cathode | Protected line input | Connected to +12V supply rail; conducts avalanche current when voltage exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables single-device protection against severe load dump (ISO7637-2 Pulse 5a) without cascaded TVS stacking |
| AEC-Q101 Qualification | Validated for automotive production use with full PPAP documentation and IATF16949 manufacturing traceability |
| Low Clamping Ratio (VC/VRWM = 1.66) | Minimizes overvoltage stress on 16V-tolerant automotive MCUs and CAN transceivers during transients |
| Lead-Free & Halogen-Free | RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb); compatible with lead-free reflow profiles and green manufacturing requirements |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Protection |
|---|---|
Use Scenario: 12V battery-supplied microcontroller power rail exposed to alternator load dump and ignition coil switching noise. IC Role / Device Role: Primary overvoltage clamp on main VDD input, placed upstream of DC-DC converter. Use Value: Limits transient voltage to ≤19.9V, preventing latch-up or gate oxide damage in 20V-max automotive MCUs. |
Use Scenario: CAN_H/CAN_L lines connected to vehicle chassis ground, subject to ESD and coupled transients from adjacent high-power circuits. IC Role / Device Role: Bidirectional clamping (using paired unidirectional devices or dedicated bi-directional variant) on differential bus lines. Use Value: Maintains signal integrity by clamping common-mode surges to <±25V while preserving CAN's 1–125 kbps timing margins. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: 12V input to image sensor module mounted near engine bay, requiring immunity to ISO7637-2 Pulse 3b (+150V) and ISO10605 contact discharge. IC Role / Device Role: First-stage transient suppressor before LDO regulator and serializer IC. Use Value: Absorbs 30kV ESD events without degradation, ensuring zero pixel dropout or frame loss during field operation. |
Use Scenario: High-current 12V supply feeding three-phase gate drivers and current sense amplifiers in EPS motor control unit. IC Role / Device Role: Bulk transient absorber on main power rail, coordinated with ceramic bypass capacitors and ferrite beads. Use Value: Withstands 300A surge current (8.3ms) from motor phase reversal, preventing driver IC destruction during emergency stop events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | 2000W PPK, same VRWM (12V), higher VC (21.2V @ 92.6A), SMC package replaced by smaller SMB (DO-214AA) | Limited to lower-energy transients (e.g., ISO10605 only); unsuitable for ISO7637-2 Pulse 1 or load dump | Select when board space is constrained and surge energy does not exceed 2000W rating |
| 1.5SMC12A | 1500W PPK, identical VRWM (12V), higher VC (21.2V @ 70.9A), same SMC footprint but lower surge capacity | Cannot meet AEC-Q101 requirements; lacks PPAP capability and automotive qualification documentation | Acceptable for non-automotive industrial controls where qualification is not mandated |
Compared with SMBJ12A and 1.5SMC12A, the 3.0SMCJ12AQ-13 delivers 50% higher peak power handling, tighter clamping (19.9V vs ≥21.2V), and full automotive qualification - making it the only choice for safety-critical ECU and ADAS power rail protection.
Availability
3.0SMCJ12AQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering designs requiring stable component supply across extended automotive product lifecycles.
Supply support for 3.0SMCJ12AQ-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 is engineered specifically for automotive transient suppression, targeting ISO7637-2 and ISO10605 compliance with AEC-Q101 validation and IATF16949 production control.
FAQ
What is the maximum clamping voltage of the 3.0SMCJ12AQ-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 19.9V at 150.8A 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 of −55°C to +175°C and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the 3.0SMCJ12AQ-13 suitable for bidirectional transient suppression?
No - the "AQ" suffix without "C" indicates a unidirectional device. It clamps only negative transients relative to cathode (e.g., ISO7637-2 Pulse 1: −150V). For bidirectional protection (e.g., data lines), the 3.0SMCJ12CAQ-13 variant must be used, which adds symmetrical clamping for both polarities.
How does the 3.0SMCJ12AQ-13 meet automotive qualification requirements?
It is fully AEC-Q101 qualified, manufactured in IATF16949-certified facilities, and PPAP-capable. Test validation includes high-temperature reverse bias (HTRB), temperature cycling, ESD (HBM ≥8kV), and surge endurance per ISO7637-2 Pulse 1/2a/3a/3b - all documented in Diodes' AEC-Q101 certificate and PPAP submission package.
What PCB layout considerations are critical for optimal thermal and electrical performance?
Mount the device on 8.00mm² copper land areas (minimum) per Diodes' datasheet recommendation to sustain 300A surge current. Use short, wide traces to minimize inductance, place it within 2cm of the protected connector or IC power pin, and avoid thermal vias under the SMC body to prevent solder joint fracture during thermal cycling.
3.0SMCJ12AQ-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 150.8A
- 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
3.0SMCJ12AQ-13 FAQ
1.How can I place an order for 3.0SMCJ12AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ12AQ-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 3.0SMCJ12AQ-13 reliable?
The price and inventory of 3.0SMCJ12AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ12AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ12AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ12AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ12AQ-13?
3.0SMCJ12AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ12AQ-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 3.0SMCJ12AQ-13?
For technical support, including 3.0SMCJ12AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ12AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ12AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ12AQ-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 3.0SMCJ12AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ12AQ-13?
All 3.0SMCJ12AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ12AQ-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 3.0SMCJ12AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ12AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ12AQ-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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