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Vishay 3.0C43CA-M3/I
- Part No.:
- 3.0C43CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C43CA-M3/I.pdf
- Description:
- 3KW, 43V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
3.0C43CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 43 V stand-off voltage (VWM), and 69.4 V maximum clamping voltage (VC) at 43.2 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in industrial and telecom power rails.
For engineers reviewing the 3.0C43CA-M3/I datasheet, 3.0C43CA-M3/I pinout, 3.0C43CA-M3/I application, or 3.0C43CA-M3/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, bidirectional polarity, MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on FR4 PCBs.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages induced by inductive switching or lightning surges. Its bidirectional architecture enables symmetrical clamping across both polarities without external polarity management.
It delivers 30 kW peak pulse power handling under 8/20 μs waveforms and meets IEC 61000-4-2 ESD immunity up to 30 kV (contact/air). Thermal resistance is 90 °C/W junction-to-ambient and 4.0 °C/W junction-to-mount, supporting reliable operation up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min/max | 47.8 V / 52.8 V - Breakdown voltage range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 69.4 V at 43.2 A - Clamping voltage during 10/1000 μs surge; determines maximum stress imposed on downstream components. |
| PPPM | 3000 W - Peak pulse power dissipation capability; defines energy-handling capacity for standard lightning/surge waveforms. |
| IPPM (10/1000 μs) | 43.2 A - Maximum non-repetitive peak pulse current; used to size PCB trace widths and verify system-level surge margin. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in high-ambient environments such as industrial motor drives. |
| ESD Rating | 30 kV per IEC 61000-4-2 - Human body model (HBM) contact/air discharge immunity; eliminates need for additional ESD stages in front-end interfaces. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity not marked on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Transient current sink terminal | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode (A) | Transient current source terminal | Connected to reference (typically GND); completes low-impedance path during bidirectional clamping events. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 3000 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line, 2 kV line-to-ground) in properly designed layouts. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, reducing stress on downstream MOSFET gate oxides or IC inputs. |
| MSL Level 1 rating | Permits unlimited floor life and reflow at 260 °C peak, eliminating bake-out requirements in high-volume SMT manufacturing. |
| 30 kV HBM ESD immunity | Meets or exceeds IEC 61000-4-2 Class 4, enabling direct integration into USB, Ethernet, and sensor interface ports. |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing circuits against inductive kickback from IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Shunt TVS device placed across DC bus or gate-source terminals to clamp voltage spikes before they exceed component ratings. Use Value: Prevents cumulative gate oxide degradation and catastrophic failure in power semiconductors during repeated switching cycles. |
Use Scenario: Surge suppression on -48 V DC telecom power distribution lines exposed to lightning-induced surges in central office or remote cabinet installations. IC Role / Device Role / Timing Role: Primary line-side transient suppressor mounted at power entry point, upstream of DC-DC converters and load switches. Use Value: Maintains uninterrupted operation during 10/1000 μs surges up to 4 kV, meeting GR-1089-CORE immunity requirements. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and ISO 7637-2 pulse 5a/b transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to absorb fast-rising transients before propagation into sensitive analog/digital circuitry. Use Value: Ensures functional safety compliance (ISO 26262 ASIL-B) by preventing latch-up or permanent damage during battery disconnect events. |
Use Scenario: Clamp protection for 4–20 mA current loop inputs and RS-485 differential pairs in factory-floor pressure, temperature, and flow sensors. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) shunt suppressor placed at PCB edge connector to limit common-mode surge energy entering signal conditioning amplifiers. Use Value: Preserves measurement accuracy by limiting input voltage excursion to ≤69.4 V during 8/20 μs surges up to 300 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same VWM (43 V) and VC (69.4 V), but lower PPPM (600 W) and smaller SMB package (DO-214AA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or high-current inductive switching. | Select SMBJ43CA only where board space is constrained and surge energy remains below 100 mJ. |
| SMCJ43CA | Identical electrical specs and SMC package, but lacks -M3 suffix - not halogen-free or whisker-tested per JESD 201 Class 2. | Not qualified for automotive or long-lifecycle industrial deployments requiring strict material compliance. | Choose 3.0C43CA-M3/I over SMCJ43CA when RoHS, halogen-free, and whisker resistance are mandatory for end-equipment certification. |
Compared with SMBJ43CA and SMCJ43CA, the 3.0C43CA-M3/I uniquely combines 3000 W surge capability, full M3 material compliance, and SMC mechanical robustness-making it the preferred choice for high-reliability industrial and telecom infrastructure designs requiring long-term supply continuity and regulatory alignment.
Availability
3.0C43CA-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, and automotive body control modules requiring stable component supply, long-lifecycle support, and certified material compliance.
Supply support for 3.0C43CA-M3/I 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, power efficiency, and application-specific optimization.
The 3.0CxxCA-M3 series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh industrial, telecom, and automotive environments where robustness and long-term stability are critical.
FAQ
What is the clamping voltage of the 3.0C43CA-M3/I under a 10/1000 μs surge?
The 3.0C43CA-M3/I has a maximum clamping voltage (VC) of 69.4 V at 43.2 A peak pulse current under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and represents the upper bound of voltage seen by protected circuitry during standardized surge events. The 3.0C43CA-M3/I maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C).
Is the 3.0C43CA-M3/I suitable for IEC 61000-4-5 Level 4 surge testing?
Yes, the 3.0C43CA-M3/I supports IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) when implemented with appropriate PCB layout-minimum 2 oz. copper, short traces, and low-inductance grounding. Its 3000 W peak pulse power and 69.4 V clamping voltage ensure downstream components remain within safe operating limits during standardized 10/1000 μs surges. The 3.0C43CA-M3/I must be paired with proper system-level filtering for full compliance.
Does the 3.0C43CA-M3/I have polarity markings on the package?
No, the 3.0C43CA-M3/I does not feature polarity markings because it is a bidirectional TVS diode. Its symmetrical breakdown behavior means either terminal can serve as anode or cathode depending on transient polarity. This simplifies placement on PCBs with AC-coupled or floating signal paths. The 3.0C43CA-M3/I uses the standard SMC (DO-214AB) outline with unmarked matte tin-plated leads per J-STD-002.
What is the thermal resistance of the 3.0C43CA-M3/I, and how does it affect layout design?
The 3.0C43CA-M3/I has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W and junction-to-mount (RthJM) of 4.0 °C/W when mounted on a standard FR4 PCB with 2 oz. copper. This means effective heat dissipation requires adequate copper pour area connected to both terminals. For repetitive surge conditions, designers should verify junction temperature rise using RthJM and thermal vias to internal ground planes. The 3.0C43CA-M3/I's 175 °C max TJ allows operation in high-ambient enclosures when thermally optimized.
How does the -M3 suffix impact the reliability of the 3.0C43CA-M3/I?
The -M3 suffix on the 3.0C43CA-M3/I indicates halogen-free molding compound, RoHS compliance, industrial-grade qualification, and passing JESD 201 Class 2 whisker testing. These attributes prevent tin whisker growth under thermal cycling and eliminate hazardous substances required by EU RoHS and China RoHS directives. The 3.0C43CA-M3/I's -M3 status ensures long-term reliability in mission-critical applications where field failure due to material degradation is unacceptable.
3.0C43CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-214AB, SMC
- Series:
- TRANSZORB®
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C43CA-M3/I FAQ
1.How can I place an order for 3.0C43CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C43CA-M3/I 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 3.0C43CA-M3/I reliable?
The price and inventory of 3.0C43CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0C43CA-M3/I is usually 5 days.
3.What payment methods are accepted for 3.0C43CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C43CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C43CA-M3/I?
3.0C43CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C43CA-M3/I 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 3.0C43CA-M3/I?
For technical support, including 3.0C43CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C43CA-M3/I requirements.
6.How does Aetrix verify that 3.0C43CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 3.0C43CA-M3/I 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 3.0C43CA-M3/I meets industry standards.
7.What is the process for return or replacement of 3.0C43CA-M3/I?
All 3.0C43CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C43CA-M3/I, 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 3.0C43CA-M3/I part is unused and in its original packaging.
Return procedure for 3.0C43CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C43CA-M3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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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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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