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Diodes Incorporated 3.0SMCJ45A-13
- Part No.:
- 3.0SMCJ45A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ45A-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,445
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Product details
Overview
3.0SMCJ45A-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with 45V reverse standoff voltage, 50.0–55.3V breakdown range at 1.0mA test current, and 72.7V max clamping voltage at 41.3A peak pulse current. It provides IEC-61000-4-2 ESD protection (30kV air/30kV contact), HBM 8kV, and operates from –55°C to +150°C in automotive and industrial power rail surge suppression.
For engineers reviewing the 3.0SMCJ45A-13 datasheet, 3.0SMCJ45A-13 pinout, 3.0SMCJ45A-13 application, or 3.0SMCJ45A-13 equivalent, this TVS diode is selected for high-energy transient suppression on DC power inputs, USB/RS-485 interface lines, and battery-fed systems where low clamping voltage and fast response (<1ns) are critical to protect downstream MOSFETs, controllers, and sensors.
Technical Context
This unidirectional TVS diode uses glass-passivated silicon junction construction to achieve precise breakdown control and stable clamping under repetitive 10/1000μs surge waveforms. Its 3000W peak pulse power rating is validated per JEDEC standards and derated linearly above +25°C ambient using the published pulse derating curve.
The device features a cathode band marking, matte tin-plated SMC package terminals, and meets RoHS 3, halogen-free, and antimony-free "Green" requirements. It is rated for 300A non-repetitive forward surge (8.3ms half-sine) and supports IATF 16949-compliant automotive production when ordered with Q-suffix variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains single 10×1000μs transients up to 41.3A without failure |
| Reverse Standoff Voltage (VRWM) | 45.0V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 50.0–55.3V @ 1.0mA - ensures reliable triggering above normal operating rail |
| Max Clamping Voltage (VC) | 72.7V @ 41.3A - limits voltage seen by protected ICs during surge events |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - protects against human-handling discharge |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - surface-mount footprint with 6.9mm × 4.4mm pad layout and 0.21g mass |
Pinout & Package
3.0SMCJ45A-13 is housed in the SMC (DO-214AB) plastic package: molded UL 94V-0 material, moisture sensitivity level 1, matte tin-plated leads solderable per MIL-STD-202 Method 208. The unidirectional configuration features a visible cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Connected to GND or return path; carries surge current to reference plane |
| Cathode | High-side connection to protected line (e.g., VBUS, VIN) | Marked with band; clamps positive transients to ground when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables robust protection against lightning-induced surges and load-dump transients in 12V/24V systems |
| 72.7V Clamping at 41.3A | Keeps downstream 48V-rated components (e.g., gate drivers, PMICs) within safe SOA during ISO 7637-2 Pulse 5a events |
| Glass-Passivated Die | Ensures long-term stability of breakdown voltage and leakage performance across temperature and life cycles |
| RoHS 3 / Halogen-Free | Meets automotive Tier-1 environmental compliance requirements (Br+Cl <1500ppm, Sb <1000ppm) |
| JEDEC-High Reliability Qualified | Validated per AEC-Q101 stress tests including HTGB, HTRB, and TCT for mission-critical applications |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamp |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and primary DC-DC converter input. Use Value: Clamps 120V/200V transients to ≤72.7V within <1ns, preventing overvoltage damage to buck controller ICs and MOSFETs. |
Use Scenario: 48V telecom rectifier output feeding base station backplane with high dV/dt switching noise. IC Role / Device Role / Timing Role: TVS mounted directly at power entry point to absorb coupled AC-line surges and inductive kickback. Use Value: Limits transient overshoot to 72.7V at 41.3A, maintaining system uptime and avoiding brownout resets in FPGA-based control modules. |
| USB Type-C VBUS Line Protection | RS-485 Transceiver Port Clamp |
Use Scenario: USB PD 3.0 source port handling up to 20V/5A, subject to hot-plug ESD and cable coupling. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line upstream of USB PD controller and load switch. Use Value: Suppresses 30kV contact ESD per IEC-61000-4-2 while adding <0.5pF capacitance, preserving signal integrity at 5Gbps. |
Use Scenario: Industrial RS-485 node installed in factory floor environment with frequent ground potential shifts and motor drive noise. IC Role / Device Role / Timing Role: TVS pair (one per line) placed at transceiver bus pins to clamp common-mode surges. Use Value: Provides symmetrical 72.7V clamping on A/B lines, preventing latch-up and permanent damage to isolated RS-485 transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A (Diodes Inc.) | Same 45V VRWM but lower 600W PPK rating and SMB package (smaller thermal mass) | Suitable only for sub-10A surge events; not recommended for load dump or ISO 7637-2 compliance | Select when board space is constrained and surge energy is limited to <100mJ |
| 1.5SMCJ45A (ON Semiconductor) | Identical 45V VRWM and 72.7V VC, but 1500W PPK and different thermal derating profile | Requires larger copper area for equivalent heat dissipation; not qualified to AEC-Q101 | Choose only for cost-sensitive non-automotive designs with verified thermal layout |
Compared with SMBJ45A and 1.5SMCJ45A, the 3.0SMCJ45A-13 delivers double the peak power handling and automotive-grade reliability-making it the sole choice for ISO 7637-2 Pulse 5a compliance and AEC-Q101–qualified systems requiring sustained 3000W surge immunity.
Availability
3.0SMCJ45A-13 is available at Aetrix Electronics and suitable for automotive ECU design, industrial power supply hardening, and high-reliability RS-485/USB infrastructure requiring stable component supply across multi-year production cycles.
Supply support for 3.0SMCJ45A-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 devices, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio, engineered specifically for automotive and industrial surge immunity-emphasizing low clamping ratio, JEDEC-reliable packaging, and full compliance with ISO 7637-2 and IEC 61000-4-2.
FAQ
What is the clamping voltage of 3.0SMCJ45A-13 at its rated peak pulse current?
The maximum clamping voltage is 72.7V at 41.3A peak pulse current, measured under the standardized 10×1000μs waveform per Figure 2 in DS30818 Rev. 18-2. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
Is 3.0SMCJ45A-13 suitable for bidirectional signal line protection?
No-it is a unidirectional TVS diode with a cathode band marking and designed only for clamping positive transients to ground. For bidirectional protection (e.g., RS-485, CAN), the bi-directional variant 3.0SMCJ45CA-13 must be used, which has symmetric breakdown in both polarities and no polarity indicator.
Does this part meet AEC-Q101 qualification requirements?
Yes-the 3.0SMCJ45A-13 is qualified to AEC-Q101 for discrete semiconductors and manufactured in IATF 16949-certified facilities. Full test reports cover HTGB, HTRB, TCT, and ESD per JESD22-A114, with documentation available upon request for PPAP submission.
What is the recommended PCB pad layout for thermal performance?
Diodes specifies a minimum 8.00mm² copper land area (0.013mm thick) per terminal to sustain 3000W pulse power. The recommended SMC pad layout is C=6.90mm, G=4.40mm, X=2.50mm, X1=9.40mm, Y=3.30mm-available in the latest package outline document at diodes.com/package-outlines.html.
3.0SMCJ45A-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):
- 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
3.0SMCJ45A-13 FAQ
1.How can I place an order for 3.0SMCJ45A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ45A-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 3.0SMCJ45A-13 reliable?
The price and inventory of 3.0SMCJ45A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ45A-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ45A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ45A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ45A-13?
3.0SMCJ45A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ45A-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 3.0SMCJ45A-13?
For technical support, including 3.0SMCJ45A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ45A-13 requirements.
6.How does Aetrix verify that 3.0SMCJ45A-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ45A-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 3.0SMCJ45A-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ45A-13?
All 3.0SMCJ45A-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ45A-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 3.0SMCJ45A-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ45A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ45A-13 Tags
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