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Diodes Incorporated 3.0SMCJ40A-13
- Part No.:
- 3.0SMCJ40A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ40A-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,037
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Product details
Overview
3.0SMCJ40A-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with 40V reverse standoff voltage, 64.5V max clamping voltage at 46.5A peak pulse current, and IEC-61000-4-2 ESD rating of 30kV (air/contact). It protects DC power rails and signal lines in industrial motor drives, telecom power supplies, and automotive body control modules against lightning-induced surges and EFT.
For engineers reviewing the 3.0SMCJ40A-13 datasheet, 3.0SMCJ40A-13 pinout, 3.0SMCJ40A-13 application, or 3.0SMCJ40A-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under 10/1000μs waveform, thermal derating above +25°C ambient, and SMC package solderability per MIL-STD-202.
Technical Context
This TVS operates as a voltage-clamped shunt protector: when transient voltage exceeds 40V standoff, it avalanches to clamp at ≤64.5V, diverting up to 46.5A (10/1000μs) away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<5μA at VRWM).
Designed for single-pulse surge suppression, it supports 3000W peak power only at TA = +25°C and derates linearly to ~50% at +125°C (per Fig. 1). The unidirectional configuration requires correct cathode-band orientation on PCB layout to avoid reverse-bias failure during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10/1000μs transients without failure at +25°C |
| Reverse Standoff Voltage (VRWM) | 40V - maximum continuous DC or RMS voltage before clamping initiates |
| Max Clamping Voltage (VC) | 64.5V @ 46.5A - upper voltage limit imposed on protected line during surge |
| Breakdown Voltage (VBR) | 44.4–49.1V @ 1mA - tight tolerance ensures predictable turn-on threshold |
| ESD Rating | 30kV air/contact per IEC-61000-4-2 - withstands human-body discharge events |
| Operating Temperature | −55°C to +150°C - suitable for under-hood automotive and industrial environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating; weight ≈0.21g; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node in unidirectional configuration |
| Cathode (marked with band) | High-side surge input terminal | Connected to line being protected; avalanche conduction occurs from cathode to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse power | Enables protection against high-energy lightning surges (IEC 61000-4-5 Level 4) on 24V/48V systems |
| Glass-passivated die | Ensures long-term stability of VBR and low parametric drift across temperature and life cycles |
| RoHS-compliant matte tin plating | Guarantees reliable solder wetting and intermetallic formation on standard PCB finishes |
| Lead-free, halogen-free "Green" construction | Meets automotive and industrial environmental compliance mandates without sacrificing surge robustness |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 48V DC bus inputs against load-dump transients and inductive kickback from H-bridge switching. IC Role / Device Role / Timing Role: Shunt TVS placed directly across input terminals to clamp voltage spikes before they reach DC-DC controllers and gate drivers. Use Value: 64.5V clamping ensures MOSFETs with 75V VDSS remain within safe SOA during 100ns–1ms surges. |
Use Scenario: Input-stage surge suppression on AC/DC rectified outputs feeding PoE injectors and baseband processors. IC Role / Device Role / Timing Role: Primary-level transient absorber located after bulk capacitor but before secondary-side regulation. Use Value: 46.5A peak current handling accommodates repetitive 10/1000μs surges common in central office power distribution. |
| Automotive Body Control Modules | Industrial PLC I/O Cards |
Use Scenario: CAN/LIN bus line protection and 12V supply rail hardening in BCMs exposed to battery dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at connector entry point to absorb coupled transients before signal conditioning circuits. Use Value: 30kV ESD rating prevents latch-up in transceiver ICs during assembly and field maintenance. |
Use Scenario: Analog input channel protection against wiring faults and electrostatic discharge in modular I/O expansion racks. IC Role / Device Role / Timing Role: Front-end clamping device placed before precision op-amps and ADC front-ends. Use Value: Low 5μA leakage at 40V VRWM avoids loading of high-impedance sensor signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A (Diodes Inc.) | Lower 600W peak power, same 40V VRWM and 64.5V VC, SMB package (smaller footprint, lower thermal mass) | Acceptable for lower-energy surges (IEC 61000-4-4 Level 3), not suitable for lightning-prone outdoor installations | Select when board space is constrained and surge threat level is moderate |
| 1.5SMCJ40A (ON Semiconductor) | Same 3000W rating and 40V/64.5V specs, identical SMC package, but rated to AEC-Q101 with PPAP support | Required for automotive production programs needing qualified components and change control documentation | Select for OEM automotive designs requiring IATF 16949 traceability and AEC qualification |
Compared with SMBJ40A, the 3.0SMCJ40A-13 delivers 5× higher surge energy handling in the same mounting footprint; versus 1.5SMCJ40A, it offers identical electrical performance but lacks formal AEC-Q101 certification-making it ideal for industrial and telecom where cost and availability outweigh automotive qualification requirements.
Availability
3.0SMCJ40A-13 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC I/O cards requiring stable component supply across multi-year production cycles.
Supply support for 3.0SMCJ40A-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 industrial, automotive, and communications markets.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio, engineered specifically for robust transient suppression in harsh environments where sustained surge immunity and long-term parameter stability are critical.
FAQ
What is the maximum clamping voltage of the 3.0SMCJ40A-13 under a 10/1000μs surge?
The maximum clamping voltage is 64.5V when subjected to a 46.5A peak pulse current defined by the 10/1000μs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage seen on the protected line during worst-case surge conditions.
Is the 3.0SMCJ40A-13 unidirectional or bidirectional?
The 3.0SMCJ40A-13 is unidirectional, indicated by the cathode band marking on the SMC package. It conducts only during positive transients on the cathode relative to anode and must be oriented correctly on the PCB to protect DC rails without forward-conducting during normal operation.
Does this TVS meet automotive qualification standards?
No-the 3.0SMCJ40A-13 is not AEC-Q101 qualified. Diodes offers the automotive-grade 3.0SMCJ40AQ-13 variant with full PPAP documentation, IATF 16949 manufacturing, and extended temperature validation for automotive applications requiring formal qualification.
What is the thermal derating behavior above +25°C ambient?
Per Figure 1 in DS30818 Rev. 18, peak pulse power derates linearly from 100% at +25°C to approximately 50% at +125°C. At +100°C, it retains ~65% of rated 3000W capability, meaning effective clamping remains functional but with reduced surge margin under sustained high-temperature operation.
3.0SMCJ40A-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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ40A-13 FAQ
1.How can I place an order for 3.0SMCJ40A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ40A-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 3.0SMCJ40A-13 reliable?
The price and inventory of 3.0SMCJ40A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ40A-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ40A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ40A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ40A-13?
3.0SMCJ40A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ40A-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 3.0SMCJ40A-13?
For technical support, including 3.0SMCJ40A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ40A-13 requirements.
6.How does Aetrix verify that 3.0SMCJ40A-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ40A-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 3.0SMCJ40A-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ40A-13?
All 3.0SMCJ40A-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ40A-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 3.0SMCJ40A-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ40A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ40A-13 Tags
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ESD9B5.0ST5G
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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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