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Vishay 3.0C70CA-M3/I
- Part No.:
- 3.0C70CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C70CA-M3/I.pdf
- Description:
- 3KW, 70V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
3.0C70CA-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), 70 V stand-off voltage (VWM), and 113 V maximum clamping voltage (VC) at 26.5 A IPPM - deployed on power rails and signal lines of industrial motor drives and telecom interface circuits.
For engineers reviewing the 3.0C70CA-M3/I datasheet, 3.0C70CA-M3/I pinout, 3.0C70CA-M3/I application, or 3.0C70CA-M3/I equivalent, key selection criteria include bidirectional clamping capability, MSL Level 1 moisture sensitivity, 175 °C junction temperature rating, and compatibility with J-STD-002 solderability standards for high-reliability PCB assembly.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within nanoseconds to transient overvoltages induced by inductive switching or ESD events. Its bidirectional architecture enables symmetrical clamping across both polarities without external polarity management.
It delivers 30 kW peak pulse power under 8/20 μs waveform while maintaining low incremental surge resistance and clamping ratio (VC/VWM = 1.61), ensuring effective energy diversion before downstream ICs reach breakdown thresholds. Thermal resistance RthJM is 4.0 °C/W, supporting robust thermal coupling to PCB copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage; defines safe DC/AC bias range before leakage exceeds 1 μA. |
| VBR (min/max) | 77.8 V / 86.0 V at 1 mA - Breakdown threshold range; ensures reliable triggering above nominal system voltage. |
| VC @ IPPM | 113 V at 26.5 A (10/1000 μs) - Clamped voltage during worst-case surge; determines maximum stress on protected circuitry. |
| PPPM | 3000 W (10/1000 μs) - Peak surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 4 compliance. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in high-ambient environments like enclosed industrial enclosures. |
| ESD Rating | ±30 kV (IEC 61000-4-2, contact/air) - Confirmed immunity level for human-body-model discharge events. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.90 mm height; compatible with automated pick-and-place. |
Pinout & Package
SMC (DO-214AB) package with two terminals: cathode and anode. Bidirectional construction means no polarity marking; either terminal may serve as input or return path depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | Provides low-impedance path to ground when reverse-biased beyond VBR; connects to protected line. |
| Cathode | Transient current entry (positive polarity event) | Provides low-impedance path to ground when forward-biased beyond VBR; connects to protected line. |
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 robust protection against lightning-induced surges per IEC 61000-4-5 in telecom and industrial power inputs. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying manufacturing flow. |
| Halogen-free, RoHS-compliant, industrial grade | Meets environmental compliance requirements for global industrial equipment and avoids supply chain restrictions. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving margin for sensitive 3.3 V or 5 V logic interfaces. |
Applications
| Industrial Motor Drives | Telecom Line Interface |
|---|---|
|
Use Scenario: Protection of gate driver ICs and isolated feedback paths against voltage spikes from relay coil de-energization and MOSFET switching noise. IC Role / Device Role: Shunt TVS placed directly across power rail inputs and signal isolation barriers. Use Value: Limits transient voltage to ≤113 V, preventing latch-up or permanent damage to 75 V-rated gate drivers and optocouplers. |
Use Scenario: Surge suppression on RJ45 Ethernet PHY lines exposed to induced lightning transients in outdoor base stations. IC Role / Device Role: Primary front-end clamping device on differential pair inputs prior to common-mode chokes and PHY receivers. Use Value: Withstands 3000 W pulses while maintaining <1 μA leakage at 70 V, preserving signal integrity and link stability. |
| Automated Test Equipment (ATE) | Programmable Logic Controllers (PLC) |
|
Use Scenario: Input protection for high-speed digital I/O channels subjected to accidental probe shorts and ESD during board-level testing. IC Role / Device Role: Bidirectional clamp on FPGA I/O banks and level-shifter inputs. Use Value: ±30 kV ESD immunity and sub-10 ns response ensure no data corruption or reset events during lab handling. |
Use Scenario: Protection of analog input modules (4–20 mA, 0–10 V) against field-wiring transients in factory automation cabinets. IC Role / Device Role: Rail-to-rail clamp on sensor signal conditioning front ends and ADC reference inputs. Use Value: 70 V VWM aligns with industrial supply rails; 175 °C TJ rating ensures reliability in uncooled control panels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | Same VWM (70 V), lower PPPM (600 W), SMB package (smaller footprint, higher RthJA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or high-current inductive loads. | Select 3.0C70CA-M3/I when >2000 W surge handling and industrial thermal performance are required. |
| 1.5KE70CA | Same VWM, axial-leaded DO-201 package, 1500 W PPPM, higher leakage (5 μA). | Not surface-mountable; incompatible with automated assembly; requires through-hole layout and larger board area. | Choose 3.0C70CA-M3/I for SMT production, space-constrained designs, and MSL-compliant reflow processes. |
Compared with SMBJ70CA and 1.5KE70CA, the 3.0C70CA-M3/I provides triple the surge power rating of SMBJ70CA and enables automated SMT placement unlike 1.5KE70CA - making it the only option meeting both high-energy IEC 61000-4-5 compliance and modern industrial PCB assembly requirements.
Availability
3.0C70CA-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interface circuits, automated test equipment, and programmable logic controllers requiring stable component supply and long-term lifecycle support.
Supply support for 3.0C70CA-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 handling, and industrial-grade qualification.
The 3.0C70CA-M3/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh electromagnetic environments such as factory automation and outdoor communications infrastructure.
FAQ
What is the clamping voltage of the 3.0C70CA-M3/I under a 10/1000 μs surge?
The 3.0C70CA-M3/I has a maximum clamping voltage (VC) of 113 V at 26.5 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during surge events, protecting downstream components rated up to 120 V.
Is the 3.0C70CA-M3/I RoHS-compliant and halogen-free?
Yes, the 3.0C70CA-M3/I is explicitly marked as halogen-free, RoHS-compliant, and industrial grade per its -M3 suffix designation. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance standards.
Does the 3.0C70CA-M3/I have polarity markings on the package?
No, the 3.0C70CA-M3/I is a bidirectional TVS diode and carries no polarity marking on the SMC (DO-214AB) case. Its symmetrical breakdown behavior allows installation in either orientation - critical for protecting AC-coupled or floating signal paths without layout constraints.
What is the maximum operating temperature for the 3.0C70CA-M3/I?
The 3.0C70CA-M3/I has a specified junction temperature range of -55 °C to +175 °C. This wide operating envelope supports deployment in uncooled industrial enclosures, automotive under-hood modules, and outdoor telecom equipment where ambient temperatures exceed 85 °C.
How does the 3.0C70CA-M3/I perform under ESD stress per IEC 61000-4-2?
The 3.0C70CA-M3/I is rated for ±30 kV ESD immunity under IEC 61000-4-2 in both contact and air discharge modes. This performance is verified per the manufacturer's test report and confirms suitability for protecting human-accessible ports and test points in industrial and medical electronics.
3.0C70CA-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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 26.5A
- 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)
3.0C70CA-M3/I FAQ
1.How can I place an order for 3.0C70CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C70CA-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 3.0C70CA-M3/I reliable?
The price and inventory of 3.0C70CA-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 3.0C70CA-M3/I is usually 5 days.
3.What payment methods are accepted for 3.0C70CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C70CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C70CA-M3/I?
3.0C70CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C70CA-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 3.0C70CA-M3/I?
For technical support, including 3.0C70CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C70CA-M3/I requirements.
6.How does Aetrix verify that 3.0C70CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 3.0C70CA-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 3.0C70CA-M3/I meets industry standards.
7.What is the process for return or replacement of 3.0C70CA-M3/I?
All 3.0C70CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C70CA-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 3.0C70CA-M3/I part is unused and in its original packaging.
Return procedure for 3.0C70CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C70CA-M3/I Tags
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Diodes Incorporated
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