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Diodes Incorporated 3.0SMCJ43CA-13
- Part No.:
- 3.0SMCJ43CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ43CA-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,071
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Product details
Overview
3.0SMCJ43CA-13 from Diodes Incorporated is a bi-directional 3000W surface-mount transient voltage suppressor (TVS) diode with 43V reverse standoff voltage, 69.4V max clamping voltage at 43.2A 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 3.0SMCJ43CA-13 datasheet, 3.0SMCJ43CA-13 pinout, 3.0SMCJ43CA-13 application, or 3.0SMCJ43CA-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VMAX, peak pulse current capability under 10/1000μs waveform, bi-directional symmetry for AC-coupled interfaces, and SMC package thermal performance on 8mm² copper land.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with breakdown voltage VBR specified at 47.8–52.8V (min/max) under 1mA test current and clamps transients to ≤69.4V at 43.2A peak pulse current per 10×1000μs waveform. Its glass-passivated die ensures stable leakage (<5μA at 43V) and low capacitance for high-speed line protection.
Thermal derating follows JEDEC J-STD-020 Level 1 moisture sensitivity, with operating junction temperature range of –55°C to +150°C and peak forward surge current rating of 300A (8.3ms half-sine). The device meets AEC-Q200 stress requirements when used in automotive-grade variants (Q-suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10/1000μs transients without failure under defined PCB layout (8mm² copper) |
| Reverse Standoff Voltage (VRWM) | 43.0V - maximum continuous DC or RMS voltage before significant leakage begins |
| Clamping Voltage (VC) | 69.4V @ 43.2A - limits transient voltage seen by downstream circuitry during surge events |
| Breakdown Voltage (VBR) | 47.8–52.8V @ 1mA - defines onset of avalanche conduction; tight tolerance enables predictable protection threshold |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - withstands direct electrostatic discharge without degradation |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive and industrial environments without derating |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating and matte tin-plated leads solderable per MIL-STD-202, Method 208. Bi-directional configuration has no polarity indicator; terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Transient current entry point (negative polarity) | Conducts during negative-going surges; forms symmetrical path with Terminal 2 |
| Cathode (Terminal 2) | Transient current entry point (positive polarity) | Conducts during positive-going surges; identical electrical behavior to Terminal 1 in bi-directional mode |
Key Features
| Feature | Design Value |
|---|---|
| 3000W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 (4kV line-to-line) surges on 24V/48V systems |
| Glass-passivated die construction | Ensures stable VBR and low leakage over temperature and lifetime; eliminates passivation-related field failures |
| Bi-directional symmetry | Provides identical clamping for ± transients-critical for RS-485, CAN, and AC-coupled sensor interfaces |
| RoHS-compliant & halogen-free | Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm-supports green manufacturing compliance |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 48V DC bus inputs against load dump and inductive kickback from H-bridge switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point before DC-DC converter input stage. Use Value: Clamps 300A surge events to ≤69.4V, preventing damage to upstream rectifiers and downstream buck controllers rated for 80V max input. |
Use Scenario: Surge suppression on -48V telecom battery backup lines exposed to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Bi-directional TVS shunting differential-mode surges between battery return and chassis ground. Use Value: Maintains <5μA leakage at nominal -48V, avoiding battery drain while clamping 10/1000μs transients to safe levels for PMICs and FPGA power sequencing. |
| Automotive Body Control Modules | RS-485 Industrial Networks |
Use Scenario: Input protection for LIN/CAN transceivers connected to external harnesses subject to ISO 7637-2 pulse 1/2/5a. IC Role / Device Role / Timing Role: Secondary-level TVS placed after common-mode chokes to absorb residual differential surges. Use Value: Delivers 30kV ESD immunity and clamps ISO 7637-2 Pulse 5a (100V/500ms) to <70V, preserving transceiver integrity without adding signal distortion. |
Use Scenario: Transient suppression on RS-485 data lines in factory automation systems with long cable runs. IC Role / Device Role / Timing Role: Bi-directional clamp across A/B differential pair to limit voltage excursion beyond transceiver absolute maximum ratings. Use Value: Symmetrical clamping ensures equal protection for both logic states; low capacitance avoids signal edge degradation at 10Mbps operation. |
Availability
3.0SMCJ43CA-13 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and RS-485 industrial networks requiring stable component supply with full traceability and lifecycle management.
Supply support for 3.0SMCJ43CA-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 design, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio engineered specifically for industrial and automotive transient suppression, emphasizing robust clamping, bi-directional symmetry, and AEC-Q200-compatible reliability.
FAQ
What is the difference between 3.0SMCJ43CA-13 and 3.0SMCJ43A-13?
The "C" suffix denotes bi-directional configuration, meaning both terminals behave identically under positive and negative transients. In contrast, 3.0SMCJ43A-13 is uni-directional and features a cathode band for polarity identification. Bi-directional devices lack polarity marking and are required for AC-coupled or differential signal protection where polarity reversal occurs.
Can 3.0SMCJ43CA-13 be used in place of SMAJ43CA?
No-SMAJ43CA is rated for 400W peak pulse power and uses the smaller SMA package, while 3.0SMCJ43CA-13 delivers 3000W in the larger SMC package. Substitution requires verifying PCB pad layout compatibility, thermal dissipation capacity, and whether the system surge requirement exceeds 400W. Direct replacement may lead to catastrophic failure under high-energy transients.
Does this TVS require a heatsink for 3000W pulse handling?
No external heatsink is needed-the 3000W rating applies to single non-repetitive pulses (per Fig. 4), and thermal mass of the SMC package plus recommended 8.00mm² copper land provides sufficient transient heat sinking. Continuous power dissipation remains limited to 5W average; sustained surges must follow derating curve in Fig. 1.
Is 3.0SMCJ43CA-13 qualified for automotive applications?
The standard 3.0SMCJ43CA-13 is not AEC-Q200 qualified. Diodes offers automotive-grade versions with "Q" suffix (e.g., 3.0SMCJ43CAQ-13) manufactured in IATF 16949-certified facilities and tested to AEC-Q200 stress requirements. These variants include PPAP documentation and change control for automotive production use.
3.0SMCJ43CA-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ43CA-13 FAQ
1.How can I place an order for 3.0SMCJ43CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ43CA-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 3.0SMCJ43CA-13 reliable?
The price and inventory of 3.0SMCJ43CA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ43CA-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ43CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ43CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ43CA-13?
3.0SMCJ43CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ43CA-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 3.0SMCJ43CA-13?
For technical support, including 3.0SMCJ43CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ43CA-13 requirements.
6.How does Aetrix verify that 3.0SMCJ43CA-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ43CA-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 3.0SMCJ43CA-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ43CA-13?
All 3.0SMCJ43CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ43CA-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 3.0SMCJ43CA-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ43CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ43CA-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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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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