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Diodes Incorporated 3.0SMCJ43AQ-13
- Part No.:
- 3.0SMCJ43AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ43AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,209
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Product details
Overview
3.0SMCJ43AQ-13 from Diodes Incorporated is a unidirectional 43V standoff transient voltage suppressor (TVS) diode in SMC package, rated for 3000W peak pulse power, 69.4V max clamping voltage at 43.2A peak pulse current, and 5µA max reverse leakage at VRWM - deployed for automotive power rail surge protection per ISO 7637-2 and IEC 61000-4-5.
For engineers reviewing the 3.0SMCJ43AQ-13 datasheet, 3.0SMCJ43AQ-13 pinout, 3.0SMCJ43AQ-13 application, or 3.0SMCJ43AQ-13 equivalent, this device is selected for high-energy ESD and lightning-induced transients on 24V/36V vehicle subsystems where clamping voltage margin, AEC-Q101 qualification, and JEDEC-reliability compliance are critical design constraints.
Technical Context
This TVS diode uses glass-passivated silicon junction construction to achieve low dynamic impedance and fast response (<1ps) to transients, with breakdown voltage tightly specified at 47.8–52.8V (min/max) at 1mA test current. Its unidirectional configuration provides asymmetric conduction: forward surge capability up to 300A (8.3ms half-sine) and reverse clamping only above VRWM.
Thermal derating follows JEDEC JESD22-A104, maintaining full 3000W rating up to +25°C ambient and linearly reducing to ~50% at +125°C. The SMC package enables surface-mount assembly with 8.00mm² copper land pads for optimal thermal dissipation during repetitive surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000µs waveform surges without failure under defined mounting conditions. |
| Reverse Standoff Voltage (VRWM) | 43.0V - maximum continuous DC or RMS voltage before significant leakage; sets operating margin below system nominal 48V rails. |
| Breakdown Voltage (VBR) | 47.8–52.8V @ 1mA - defines precise turn-on threshold for transient clamping; tight 10.5% tolerance ensures predictable protection level. |
| Max Clamping Voltage (VC) | 69.4V @ 43.2A - limits protected circuit voltage during worst-case surge; provides ≥20V headroom for 48V automotive electronics. |
| Peak Pulse Current (IPP) | 43.2A - maximum non-repetitive surge current the device can safely clamp; derived from 3000W / 69.4V calculation. |
| ESD Rating | ±30kV air / ±30kV contact per IEC 61000-4-2 - eliminates need for external ESD diodes in CAN/LIN bus interfaces. |
| Operating Temperature | −55°C to +150°C - qualified for under-hood automotive environments including engine control units and ADAS power supplies. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic body, UL 94V-0 rated, 0.21g weight, matte tin-plated leads solderable per MIL-STD-202 Method 208. Cathode band denotes polarity for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; establishes clamping reference for positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 24V battery feed); conducts surge current to ground when voltage exceeds VRWM. |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse power | Enables single-device protection against ISO 7637-2 Pulse 5a (500W) and IEC 61000-4-5 combination wave (up to 2kW) without parallel staging. |
| AEC-Q101 qualified | Validated for automotive use with HTOL, temperature cycling, and bond wire pull tests - supports PPAP documentation for Tier-1 suppliers. |
| Glass-passivated die | Eliminates moisture ingress risk and improves long-term stability of VBR and leakage performance in humid under-hood environments. |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and automotive "Green" standards (<900ppm Br+Cl, <1000ppm Sb), enabling global vehicle program acceptance. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 24V supply lines feeding microcontroller I/O and relay drivers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local LDO input to clamp transients before regulation. Use Value: 69.4V clamping ensures downstream 5V/3.3V regulators remain within absolute maximum ratings during 120V/200ms load dump events. |
Use Scenario: Shielding 24V digital input channels from field wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary surge suppression on dry-contact inputs connected to solenoids or limit switches. Use Value: 43.2A IPP rating handles repeated 1kV/500Ω IEC 61000-4-5 surges without degradation over 100,000 cycles. |
| Commercial Vehicle Telematics Unit | EV Onboard Charger Interface |
|
Use Scenario: Safeguarding CAN FD transceiver power and signal lines against coupled transients from starter motor cranking. IC Role / Device Role / Timing Role: Local clamping on VCC pin of CAN transceiver, coordinated with common-mode chokes. Use Value: ±30kV ESD rating prevents latch-up or damage during technician handling; −55°C to +150°C range supports wide ambient operation. |
Use Scenario: Protecting 48V auxiliary power interface between OBC and vehicle network during plug-in/unplug events. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; unidirectional 3.0SMCJ43AQ-13 guards positive rail only due to system grounding scheme. Use Value: 5µA leakage at 43V minimizes standby current drain in always-on monitoring circuits without compromising sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | 2000W PPK, same VRWM/VC but lower IPP (29.1A), SMB package (smaller thermal mass). | Limited to lower-energy transients (e.g., IEC 61000-4-4 EFT only); unsuitable for ISO 7637-2 Pulse 5a. | Select when board space is constrained and surge energy is ≤2000W; verify thermal relief pad area matches SMB footprint. |
| SMCJ43A | Identical electrical specs and SMC package, but lacks Q-suffix AEC-Q101 qualification and automotive change control. | Not approved for production automotive programs requiring PPAP or IATF 16949 traceability. | Use only in industrial or consumer designs where automotive reliability certification is not mandated. |
Compared with SMBJ43A and SMCJ43A, the 3.0SMCJ43AQ-13 uniquely delivers AEC-Q101 validation, 3000W surge capacity, and full automotive change control - making it the sole choice for safety-critical 24V/48V vehicle subsystems requiring zero-defect field performance.
Availability
3.0SMCJ43AQ-13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, commercial telematics systems, and EV auxiliary power interfaces requiring stable component supply across multi-year production cycles.
Supply support for 3.0SMCJ43AQ-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, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.
This device belongs to the 3.0SMCJ series of high-power TVS diodes engineered specifically for automotive-grade transient suppression, emphasizing robustness, tight parametric tolerances, and full qualification for harsh environment deployment.
FAQ
What does the 'Q' suffix signify in 3.0SMCJ43AQ-13?
The 'Q' suffix indicates full AEC-Q101 qualification, including stress testing for high-temperature operating life, temperature cycling, and electrostatic discharge robustness. It also confirms production in IATF 16949-certified facilities with PPAP documentation support - essential for Tier-1 automotive supply chain compliance.
Can 3.0SMCJ43AQ-13 be used in bidirectional configurations?
No - this part is unidirectional, indicated by the cathode band marking and absence of symmetrical breakdown in datasheet specifications. For bidirectional protection, Diodes offers the 3.0SMCJ43CA-13 variant, which has identical VRWM and clamping but symmetric conduction in both polarities.
How does the 3000W rating translate to real-world surge immunity?
The 3000W rating corresponds to a 10×1000µs double-exponential waveform per IEC 61000-4-5. When mounted on 8.00mm² copper pads, it withstands 43.2A peak current at 69.4V clamping - sufficient for ISO 7637-2 Pulse 5a (120V, 400ms) after system impedance reduction via PCB layout and filtering.
Is lead (Pb)-free solder reflow compatible with this device?
Yes - the matte tin-plated leads meet JEDEC J-STD-020 moisture sensitivity Level 1 and are fully compatible with standard Pb-free reflow profiles (peak 260°C). The UL 94V-0 mold compound remains stable through multiple thermal cycles without delamination or parameter shift.
3.0SMCJ43AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- 3.0SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 43.2A
- 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
3.0SMCJ43AQ-13 FAQ
1.How can I place an order for 3.0SMCJ43AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ43AQ-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 3.0SMCJ43AQ-13 reliable?
The price and inventory of 3.0SMCJ43AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ43AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ43AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ43AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ43AQ-13?
3.0SMCJ43AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ43AQ-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 3.0SMCJ43AQ-13?
For technical support, including 3.0SMCJ43AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ43AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ43AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ43AQ-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 3.0SMCJ43AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ43AQ-13?
All 3.0SMCJ43AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ43AQ-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 3.0SMCJ43AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ43AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ43AQ-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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