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Diodes Incorporated 3.0SMCJ40AQ-13
- Part No.:
- 3.0SMCJ40AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ40AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,048
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Product details
Overview
3.0SMCJ40AQ-13 from Diodes Incorporated is a unidirectional 40V standoff, 3000W peak pulse power transient voltage suppressor (TVS) in SMC package, featuring 64.5V max clamping voltage at 46.5A peak pulse current, 5µA max reverse leakage at VRWM, and AEC-Q101 qualification for automotive power rail protection against ESD and surge events.
For engineers reviewing the 3.0SMCJ40AQ-13 datasheet, 3.0SMCJ40AQ-13 pinout, 3.0SMCJ40AQ-13 application, or 3.0SMCJ40AQ-13 equivalent, this device serves as a primary overvoltage clamp on 36–42V DC supply lines in engine control units, ADAS camera modules, and infotainment power inputs where IEC-61000-4-2 ±30kV air/contact ESD immunity and robust 8.3ms surge handling are required.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds 40V standoff (VRWM), with breakdown occurring between 44.4V and 49.1V at 1mA test current. Its glass-passivated silicon die ensures stable VBR tolerance and low leakage under high-temperature operation up to +150°C junction temperature.
The device conforms to AEC-Q101 stress testing for automotive reliability and delivers 3000W peak pulse power per 10×1000µs waveform, with clamping performance validated at 64.5V under 46.5A IPP - enabling effective suppression of ISO 7637-2 Pulse 1/2a/3a transients on 12V/24V/48V vehicle subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains single 10×1000µs surges without failure in automotive load-dump scenarios |
| Reverse Standoff Voltage (VRWM) | 40.0V - sets minimum operating voltage threshold before clamping activation on 36–42V rails |
| Clamping Voltage (VC @ IPP) | 64.5V @ 46.5A - limits downstream IC voltage during worst-case transients, protecting 65V-rated components |
| Breakdown Voltage (VBR) | 44.4–49.1V @ 1mA - defines precise avalanche onset range for predictable turn-on behavior |
| ESD Rating | ±30kV air / ±30kV contact per IEC-61000-4-2 - meets automotive infotainment and sensor interface immunity requirements |
| Operating Temperature | −55°C to +150°C - supports under-hood and powertrain module deployment without derating |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating, 0.21g weight, matte tin-plated leads solderable per MIL-STD-202 Method 208. Cathode band denotes unidirectional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; establishes clamping reference point |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery feed); conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress tests including HTGB, HTRB, TCT, and ESD - enables PPAP-compliant BOMs |
| Glass-passivated die | Ensures stable VBR and low IR drift across temperature and lifetime, critical for long-term field reliability |
| 3000W peak pulse rating | Handles ISO 7637-2 Pulse 5a (load dump) up to 120V/100ms without thermal runaway |
| RoHS 3 & "Green" compliant | Contains <900ppm Br, <900ppm Cl, <1000ppm Sb - satisfies EU automotive environmental compliance mandates |
Applications
| Engine Control Unit (ECU) Power Input | ADAS Camera Module Supply Rail |
|---|---|
Use Scenario: Protects 42V-rated microcontroller and CAN transceiver power pins from load dump transients during alternator regulation failure. IC Role / Device Role: Primary unidirectional TVS clamp placed directly at connector entry point before bulk capacitance. Use Value: Limits voltage to ≤64.5V during 120V/400ms load dump event, preventing latch-up or gate oxide damage in downstream 65V-rated PMICs. |
Use Scenario: Shields 3.3V/5V imaging sensor and serializer ICs from ESD coupling via FAKRA coaxial cable shield and power traces. IC Role / Device Role: Secondary-level TVS on 12V intermediate rail feeding DC-DC converters powering image sensors. Use Value: Absorbs ±30kV IEC-61000-4-2 contact discharge without degradation, maintaining signal integrity during hot-plug camera installation. |
| Infotainment Head Unit USB-C PD Port | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Guards USB-C power delivery circuitry against conducted surges from vehicle battery fluctuations and RF coupling. IC Role / Device Role: Front-end TVS on 20V VBUS line upstream of buck-boost controller and USB PD PHY. Use Value: Clamps 10×1000µs 1kV surge to 64.5V within 1ns response time, preserving USB-C port certification and preventing PHY latch-up. |
Use Scenario: Safeguards high-side gate drivers and current sense amplifiers from motor commutation spikes and battery reversal transients. IC Role / Device Role: Bidirectional-capable unidirectional TVS (cathode grounded) on 48V auxiliary supply rail feeding EPS MCU and drivers. Use Value: Withstands repetitive 8.3ms half-sine surges up to 300A (derated), ensuring uninterrupted torque control during aggressive steering maneuvers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A-13-F | 600W rating, SMA package, 64.5V VC @ 9.3A IPP | Lower power handling; suitable only for sub-10A surge environments like body control modules | Select when space-constrained layouts preclude SMC and surge energy is limited to <10J |
| 1.5SMCJ40AQ-13 | 1500W rating, same SMC package, 64.5V VC @ 23.3A IPP | Half the peak power; adequate for non-load-dump applications such as LIN bus or sensor interfaces | Choose for cost-sensitive designs where ISO 7637-2 Pulse 5a is not required |
Compared with SMAJ40A-13-F and 1.5SMCJ40AQ-13, the 3.0SMCJ40AQ-13 provides double the surge energy margin and full AEC-Q101 qualification - making it the only option rated for direct integration into 48V mild-hybrid power distribution networks and high-reliability ADAS domains.
Availability
3.0SMCJ40AQ-13 is available at Aetrix Electronics and suitable for automotive power management, ADAS sensor protection, and infotainment system design requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 3.0SMCJ40AQ-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 protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
The 3.0SMCJ series belongs to Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in 12V/24V/48V vehicle electrical systems - emphasizing low clamping ratio, stable VBR, and long-term parametric stability under thermal cycling.
FAQ
Is 3.0SMCJ40AQ-13 unidirectional or bidirectional?
It is unidirectional, indicated by the absence of "(C)" in the part number suffix and confirmed by the cathode band marking. It clamps only during reverse overvoltage events and conducts forward current like a standard diode - ideal for DC power rail protection where polarity is fixed.
What is the maximum operating temperature for continuous use?
The junction temperature range is −55°C to +150°C, with derating beginning above +25°C ambient per Figure 1. At +125°C ambient, peak pulse power drops to ~55% of 3000W, and the device remains fully functional within its specified clamping and leakage parameters.
Does this TVS meet automotive ESD standards beyond IEC-61000-4-2?
Yes - it achieves Human Body Model (HBM) 8kV, Charged Device Model (CDM) 1kV, and Machine Model (MM) 800V ratings per JESD22-A114/A101/A115, satisfying OEM-specific ESD validation requirements for PCB-level assembly and end-of-line testing.
Can 3.0SMCJ40AQ-13 replace older SMCJ40A variants in existing designs?
Yes - it shares identical electrical specs, SMC package dimensions, and thermal characteristics with legacy SMCJ40A parts, but adds AEC-Q101 qualification, enhanced moisture sensitivity level (MSL 1), and halogen/antimony-free "Green" construction - enabling drop-in compliance upgrades without layout changes.
3.0SMCJ40AQ-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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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
3.0SMCJ40AQ-13 FAQ
1.How can I place an order for 3.0SMCJ40AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ40AQ-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 3.0SMCJ40AQ-13 reliable?
The price and inventory of 3.0SMCJ40AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ40AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ40AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ40AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ40AQ-13?
3.0SMCJ40AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ40AQ-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 3.0SMCJ40AQ-13?
For technical support, including 3.0SMCJ40AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ40AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ40AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ40AQ-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 3.0SMCJ40AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ40AQ-13?
All 3.0SMCJ40AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ40AQ-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 3.0SMCJ40AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ40AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ40AQ-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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