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Vishay 3.0C120CA-M3/I
- Part No.:
- 3.0C120CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C120CA-M3/I.pdf
- Description:
- 3KW, 120V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
3.0C120CA-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), 120 V stand-off voltage (VWM), and 193 V maximum clamping voltage (VC) at 15.5 A IPPM - deployed on power rails and signal lines of industrial motor drives and telecom interface circuits.
For engineers reviewing the 3.0C120CA-M3/I datasheet, 3.0C120CA-M3/I pinout, 3.0C120CA-M3/I application, or 3.0C120CA-M3/I equivalent, this page delivers verified electrical specs, JEDEC-compliant thermal data, IEC 61000-4-2 ESD immunity (30 kV contact/air), SMC mechanical dimensions, and real-world design guidance for transient suppression in 24–48 V DC systems.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by overvoltage transients, leveraging avalanche breakdown to divert surge current away from sensitive downstream components. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
It meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility, features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing - confirming suitability for high-reliability automated assembly in industrial and telecom equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 120 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V nominal DC bus applications. |
| VBR min/max | 133 V / 147 V at 1.0 mA IT - guaranteed avalanche initiation range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 193 V at 15.5 A (10/1000 μs) - clamping voltage under rated surge; limits stress on protected ICs like RS-485 transceivers or gate drivers. |
| PPPM | 3000 W (10/1000 μs) - peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV line-to-ground) surge events. |
| ESD Rating | 30 kV HBM contact & air discharge per IEC 61000-4-2 - protects against human-handling electrostatic events during board assembly and field service. |
| TJ max | +175 °C - maximum junction temperature; enables operation in enclosed enclosures or near heat-generating components without derating. |
| RthJA | 90 °C/W - thermal resistance junction-to-ambient on FR4 PCB; informs heatsinking requirements for repeated surge duty cycles. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1, 260 °C reflow capable. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode marked by single band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current return path for negative transients | Connected to system ground or low-side reference; completes bidirectional clamping loop with cathode. |
| Cathode | Surge current return path for positive transients | Connected to protected line (e.g., CAN_H, PoE+ rail, sensor VCC); forms symmetrical clamp with anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC signals and floating buses (e.g., RS-485, CAN, Ethernet PHY) without external polarity management circuitry. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection fidelity for sub-100 ns edges. |
| Very fast response time | Sub-nanosecond avalanche turn-on ensures clamping initiates before most semiconductor damage thresholds are exceeded. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets fire-safety requirements for industrial control panels and telecom cabinets. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in automotive-adjacent and outdoor deployments. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of 48 V DC input stage against load dump and relay coil flyback in PLC I/O modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input connector and upstream DC-DC converter. Use Value: Limits transient voltage to ≤193 V, preventing damage to 200 V-rated MOSFETs and enabling use of lower-cost input capacitors. | Use Scenario: Surge suppression on PoE++ (IEEE 802.3bt) power sourcing equipment (PSE) output ports. IC Role / Device Role / Timing Role: Bidirectional TVS shunting common-mode surges induced by lightning coupling on twisted-pair cabling. Use Value: Withstands 3000 W pulses while maintaining <1.0 μA leakage at 120 V, preserving PSE detection accuracy and classification integrity. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
Use Scenario: Input protection for LIN bus transceivers exposed to battery transients in vehicle door modules. IC Role / Device Role / Timing Role: Clamps ISO 7637-2 Pulse 1/2a/5a events on 12 V supply rail feeding LIN PHY ICs. Use Value: 175 °C TJ max and -55 °C to +175 °C operating range support under-hood deployment without derating. | Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loop receivers) in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA at VWM) bidirectional clamp on signal lines subject to ESD and EFT bursts. Use Value: 120 V VWM provides >2× margin over 48 V loop supply, avoiding false triggering while preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Lower PPPM (600 W), same VWM (120 V), SMB package (smaller footprint, higher RthJA) | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy transients in space-constrained consumer designs | Select when board area is critical and surge energy is ≤600 W; verify thermal performance under repetitive stress. |
| 1.5KE120CA | Higher VBR (133–147 V), same VWM (120 V), axial DO-201 package, 1500 W PPPM | Through-hole mounting only; unsuitable for automated SMT lines; lacks MSL Level 1 and JESD 201 compliance | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ120CA and 1.5KE120CA, the 3.0C120CA-M3/I delivers 5× higher surge power handling than SMBJ120CA and full SMT process compatibility absent in 1.5KE120CA - making it the optimal choice for high-reliability, high-energy industrial and telecom surge protection.
Availability
3.0C120CA-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, automotive body control modules, and industrial sensor signal conditioning requiring stable component supply and long-lifecycle assurance.
Supply support for 3.0C120CA-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 ruggedness, precision, and manufacturability.
The 3.0CxxCA-M3 series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and transportation systems where reliability under surge stress is non-negotiable.
FAQ
What is the maximum clamping voltage of the 3.0C120CA-M3/I under a 10/1000 μs surge?
The 3.0C120CA-M3/I has a maximum clamping voltage (VC) of 193 V at 15.5 A peak pulse current (IPPM) for a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees voltage limiting during standardized surge events, protecting downstream 200 V-rated components in industrial power rails.
Is the 3.0C120CA-M3/I compatible with lead-free reflow soldering processes?
Yes, the 3.0C120CA-M3/I meets MSL Level 1 per J-STD-020 and supports a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and it passes JESD 201 Class 2 whisker testing - confirming robust performance in modern lead-free SMT assembly lines.
Does the 3.0C120CA-M3/I have polarity marking on the package?
No, the 3.0C120CA-M3/I is a bidirectional TVS and carries no polarity marking on its SMC (DO-214AB) body. The device functions identically regardless of orientation, simplifying layout and eliminating risk of reverse installation in AC-coupled or differential signal protection applications.
What is the junction-to-ambient thermal resistance (RthJA) of the 3.0C120CA-M3/I?
The 3.0C120CA-M3/I has a typical RthJA of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A. This value applies to the recommended 2 oz. copper footprint and informs thermal design for applications involving repetitive surge events or elevated ambient temperatures.
How does the 3.0C120CA-M3/I perform under IEC 61000-4-2 ESD stress?
The 3.0C120CA-M3/I is rated for 30 kV per IEC 61000-4-2 in both contact and air discharge modes. This level exceeds standard industrial immunity requirements and provides robust protection for human-interface points such as connectors, buttons, and sensor terminals in field-deployed equipment.
3.0C120CA-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):
- 120V
- Voltage - Breakdown (Min):
- 133V
- Voltage - Clamping (Max) @ Ipp:
- 193V
- Current - Peak Pulse (10/1000µs):
- 15.5A
- 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)
3.0C120CA-M3/I FAQ
1.How can I place an order for 3.0C120CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C120CA-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 3.0C120CA-M3/I reliable?
The price and inventory of 3.0C120CA-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 3.0C120CA-M3/I is usually 5 days.
3.What payment methods are accepted for 3.0C120CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C120CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C120CA-M3/I?
3.0C120CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C120CA-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 3.0C120CA-M3/I?
For technical support, including 3.0C120CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C120CA-M3/I requirements.
6.How does Aetrix verify that 3.0C120CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 3.0C120CA-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 3.0C120CA-M3/I meets industry standards.
7.What is the process for return or replacement of 3.0C120CA-M3/I?
All 3.0C120CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C120CA-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 3.0C120CA-M3/I part is unused and in its original packaging.
Return procedure for 3.0C120CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C120CA-M3/I Tags
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