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Diodes Incorporated 3.0SMCJ45CA-13
- Part No.:
- 3.0SMCJ45CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ45CA-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,128
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Product details
Overview
3.0SMCJ45CA-13 from Diodes Incorporated is a bi-directional 45V standoff transient voltage suppressor (TVS) diode in SMC package, rated for 3000W peak pulse power, 72.7V max clamping voltage at 41.3A IPP, and 5µA max reverse leakage at VRWM - deployed for I/O line protection in industrial PLCs, automotive body control modules, and DC power input stages.
For engineers reviewing the 3.0SMCJ45CA-13 datasheet, 3.0SMCJ45CA-13 pinout, 3.0SMCJ45CA-13 application, or 3.0SMCJ45CA-13 equivalent, key selection criteria include clamping voltage margin vs. system rail, bidirectional surge handling for AC-coupled or floating interfaces, IEC-61000-4-2 ESD robustness (30kV air/30kV contact), and thermal derating above +25°C ambient.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under transient overvoltage exceeding its 45V standoff rating, it avalanches to clamp energy within 1ns response time, diverting up to 41.3A (10×1000µs waveform) while limiting downstream voltage to ≤72.7V. Its glass-passivated junction ensures stable breakdown and low leakage.
Designed for surface-mount PCB integration, it uses bidirectional symmetry to protect AC signals or ungrounded DC lines without polarity constraints. The SMC package supports 3000W peak dissipation with 8.00mm² copper land area per JEDEC mounting guidelines and exhibits full operational range from –55°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains single 10×1000µs transients without failure; requires adequate PCB copper area for thermal management. |
| Reverse Standoff Voltage (VRWM) | 45.0V - maximum continuous DC or RMS voltage before significant leakage; sets minimum operating margin for protected circuit. |
| Max Clamping Voltage (VC) | 72.7V @ 41.3A - peak voltage seen by downstream IC during worst-case surge; determines required IC overvoltage tolerance. |
| Breakdown Voltage (VBR) | 50.0–55.3V @ 1.0mA - precise avalanche initiation window; ensures predictable turn-on behavior across temperature and unit variation. |
| ESD Rating | IEC-61000-4-2: 30kV air / 30kV contact - qualifies for direct interface protection in harsh industrial or automotive environments. |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive, industrial motor drives, and outdoor telecom equipment deployment. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic (UL 94V-0), 0.21g weight, matte tin-plated leads. Bi-directional configuration has no polarity indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Bi-directional terminals conduct equally in either direction during overvoltage events; no orientation required on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable VBR and low IR drift over lifetime and temperature cycling; improves long-term reliability in high-humidity environments. |
| 3000W peak pulse power rating | Enables protection against severe surges like lightning-induced ring waves (IEC 61000-4-5 Level 4) on 24V/48V industrial buses. |
| JEDEC-qualified high-reliability grade | Meets AEC-Q200 stress test requirements for passive components; suitable for automotive-grade production without additional qualification. |
| RoHS-compliant, halogen-free "Green" construction | Contains <900ppm Br, <900ppm Cl, <1000ppm Sb - meets global environmental compliance mandates for export and OEM acceptance. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V digital input channels exposed to relay coil flyback and field wiring ESD in factory automation cabinets. IC Role / Device Role: Primary shunt TVS at connector entry point, placed before signal conditioning and isolation stages. Use Value: Clamps 41.3A transients to ≤72.7V, protecting downstream optocouplers and microcontroller GPIOs rated for 80V absolute max. |
Use Scenario: LIN bus and sensor supply lines in door module ECUs subject to battery dump and load dump events. IC Role / Device Role: Bidirectional overvoltage clamp on 12V rail and LIN signal pair, co-located with EMI filter. Use Value: Withstands 30kV contact ESD and 10×1000µs surges up to 3000W without degradation, meeting ISO 16750-2 requirements. |
| DC Power Input Stage | AC-Coupled Communication Interface |
Use Scenario: 48V PoE-powered network switch front-end where DC input connects to external cabling. IC Role / Device Role: First-line transient suppressor upstream of DC-DC converter and fuse. Use Value: Limits clamping voltage to 72.7V, ensuring input stage MOSFETs and controllers remain within safe SOA during surge events. |
Use Scenario: RS-485 transceiver data lines in building automation systems with long cable runs. IC Role / Device Role: Bi-directional TVS across differential pair (A/B) and common-mode to ground. Use Value: Symmetric clamping prevents signal inversion during ESD strikes; maintains signal integrity up to 10Mbps under transient stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA-13 (Diodes Inc.) | Same 45V VRWM and bidirectional design, but 600W peak power (SMB package); 3× lower surge capacity. | Acceptable only for low-energy ESD-only protection; insufficient for IEC 61000-4-5 surge immunity. | Select when board space is constrained and surge threat level is limited to HBM/CDM/IEC-61000-4-2 only. |
| 1.5SMCJ45CA (ON Semiconductor) | Identical 45V VRWM, 72.7V VC, 41.3A IPP, and SMC package; minor VBR tolerance difference (50.0–55.3V vs. 50.0–56.0V). | Drop-in compatible for most designs; validated for same automotive and industrial standards. | Choose for dual-sourcing flexibility; verify date-code traceability and PPAP documentation if used in automotive production. |
Compared with SMBJ45CA-13, the 3.0SMCJ45CA-13 delivers 5× higher surge energy handling; versus 1.5SMCJ45CA, it offers identical electrical performance with Diodes' JEDEC-qualified manufacturing and RoHS/halogen-free compliance.
Availability
3.0SMCJ45CA-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and DC power input stages requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 3.0SMCJ45CA-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 and automotive markets.
This device belongs to the 3.0SMCJ series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh electromagnetic environments with stringent regulatory compliance requirements.
FAQ
What is the clamping voltage of 3.0SMCJ45CA-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 72.7V measured at 41.3A peak pulse current using the standard 10×1000µs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage imposed on protected circuitry during worst-case transient events.
Is 3.0SMCJ45CA-13 suitable for automotive applications?
Yes - it is JEDEC-qualified for high reliability and manufactured in IATF 16949-certified facilities. While not AEC-Q200 certified out-of-box, its construction, testing, and process controls align with automotive-grade requirements; Diodes offers Q-suffix variants (e.g., 3.0SMCJ45CAQ-13) with full PPAP and AEC-Q200 qualification for production use.
How does the bi-directional configuration affect PCB layout?
The bi-directional design eliminates polarity marking - both terminals are functionally identical, allowing placement without orientation checks. This simplifies automated assembly and reduces risk of misplacement, especially in dense layouts with multiple TVS devices on differential or AC-coupled signal paths.
What is the recommended PCB pad layout for thermal performance?
Per Diodes' datasheet, use 8.00mm² (minimum) copper land area per terminal, with thermal vias to inner or back-side ground planes. The suggested SMC pad layout specifies 6.90mm × 4.40mm pad dimensions and 2.50mm spacing - critical to sustain 3000W pulse dissipation without solder joint fatigue or delamination.
3.0SMCJ45CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 41.3A
- 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
3.0SMCJ45CA-13 FAQ
1.How can I place an order for 3.0SMCJ45CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ45CA-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 3.0SMCJ45CA-13 reliable?
The price and inventory of 3.0SMCJ45CA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ45CA-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ45CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ45CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ45CA-13?
3.0SMCJ45CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ45CA-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 3.0SMCJ45CA-13?
For technical support, including 3.0SMCJ45CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ45CA-13 requirements.
6.How does Aetrix verify that 3.0SMCJ45CA-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ45CA-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 3.0SMCJ45CA-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ45CA-13?
All 3.0SMCJ45CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ45CA-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 3.0SMCJ45CA-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ45CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ45CA-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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