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Vishay General Semiconductor - Diodes Division 3.0C70CA-M3/H
- Part No.:
- 3.0C70CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C70CA-M3/H.pdf
- Description:
- 3KW, 70V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,038
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Product details
Overview
3.0C70CA-M3/H 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, and 113 V clamping voltage at 26.5 A. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the 3.0C70CA-M3/H datasheet, 3.0C70CA-M3/H pinout, 3.0C70CA-M3/H application, or 3.0C70CA-M3/H equivalent, this page delivers verified electrical specs, clamping behavior under 10/1000 μs and 8/20 μs transients, thermal resistance (RthJA = 90 °C/W), ESD immunity (30 kV HBM), and SMC package mechanical data - all critical for robust overvoltage design validation.
Technical Context
This TVS diode operates bidirectionally with a breakdown voltage range of 77.8–86.0 V at 1 mA test current, enabling symmetrical clamping across AC-coupled or floating signal paths. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while meeting IEC 61000-4-2 (30 kV contact/air) and JEDEC J-STD-020 MSL level 1 standards.
Thermal performance is defined by RthJM = 4.0 °C/W (junction-to-mount) and RthJA = 90 °C/W (junction-to-ambient on FR4), supporting reliable operation up to +175 °C junction temperature. The device uses halogen-free, RoHS-compliant molding compound rated UL 94 V-0 and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for safe circuit biasing. |
| VBR min/max | 77.8 V / 86.0 V at 1 mA - Confirmed breakdown threshold range; defines onset of clamping action. |
| VC @ IPPM | 113 V at 26.5 A (10/1000 μs) - Clamped voltage during worst-case surge; determines protected circuit's maximum transient exposure. |
| PPPM | 3000 W (10/1000 μs) - Peak surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| IPPM | 26.5 A (10/1000 μs) - Corresponding peak current at VC; used to size PCB trace width and layout clearance. |
| TJ max | +175 °C - Maximum junction temperature; enables use in high-ambient environments like motor drives and base stations. |
| ESD Rating | 30 kV HBM (contact & air) - Confirmed immunity per IEC 61000-4-2; eliminates need for additional ESD stages in front-end protection. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Case meets UL 94 V-0; terminals are matte tin-plated for reliable solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Anode/Cathode terminal pair | Bidirectional structure - either terminal serves as anode or cathode depending on transient polarity; no dedicated pin assignment. |
| Anode (unmarked end) | Anode/Cathode terminal pair | Same physical terminal as cathode in bidirectional operation; symmetric clamping requires no orientation-dependent routing. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or floating nodes without polarity constraints. |
| 30 kW surge rating (8/20 μs) | Supports high-energy lightning-induced surges per IEC 61000-4-5; validated clamping at 146 V @ 205 A. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (<1 ns response), preserving timing margins in high-speed interfaces. |
| MSL Level 1 | Allows unlimited floor life and reflow at peak 260 °C - compatible with standard lead-free assembly processes. |
| Halogen-free & RoHS | Fulfills environmental compliance for industrial, telecom, and consumer end-equipment without sacrificing surge robustness. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
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: Primary transient shunt element placed across DC bus or gate resistor networks to clamp voltage spikes below MOSFET VDSS rating. Use Value: Prevents cumulative gate oxide stress and catastrophic failure during repeated 3000 W surges, extending system MTBF in harsh factory environments. | Use Scenario: Input-stage surge suppression on -48 V telecom power feeds exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: First-line defense clamping common-mode transients before DC/DC converters and PMICs. Use Value: Maintains 70 V stand-off while clamping to 113 V under 26.5 A, ensuring downstream regulators remain within absolute maximum ratings during 10/1000 μs events. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
Use Scenario: Protection of LIN/CAN transceiver power rails and IO pins against load dump and jump-start transients in 12 V systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VCC and GND to absorb both positive and negative polarity surges. Use Value: Withstands 30 kV HBM ESD and 3000 W surges while operating up to +175 °C - qualified for under-hood deployment without derating. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA loops) and digital sensor interfaces (I²C, SPI) from EFT and ESD in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) shunt device placed directly at connector entry points. Use Value: Clamps transients to 113 V within nanoseconds while adding negligible loading to 1 MHz bandwidth sensor signals - preserves signal integrity and measurement accuracy. |
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) and bidirectional configuration, but lower PPPM = 600 W (10/1000 μs); SMC package replaced by smaller SMB (DO-214AA). | Not suitable for 3000 W surge environments; limited to low-energy ESD/EFT zones near microcontrollers. | Select only when board space is constrained and surge threat level is ≤ Level 2 per IEC 61000-4-5. |
| SMCJ70CA | Identical SMC (DO-214AB) package and 3000 W rating, but higher VBR (77.8–86.0 V same), same VC (113 V), and identical thermal specs. | No functional difference; direct second-source alternative with identical footprint and performance. | Valid drop-in replacement with full pin-to-pin and electrical compatibility - recommended for supply chain diversification. |
Compared with SMBJ70CA, 3.0C70CA-M3/H delivers 5× higher surge power handling and SMC-level thermal robustness; versus SMCJ70CA, it offers identical protection capability with Vishay-specific process optimization and M3-grade whisker resistance.
Availability
3.0C70CA-M3/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for 3.0C70CA-M3/H 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, TVS devices, and optoelectronics with emphasis on reliability and ruggedized performance.
The 3.0CxxCA-M3 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, high-reliability transient suppression in industrial, telecom, and automotive power systems where sustained surge energy must be safely diverted.
FAQ
What is the clamping voltage of the 3.0C70CA-M3/H under a 10/1000 μs surge?
The 3.0C70CA-M3/H clamps to 113 V at its rated peak pulse current of 26.5 A under a 10/1000 μs waveform. This value is measured and guaranteed per Vishay Document Number 98266, ensuring predictable voltage limiting during standardized surge events in power rail protection applications.
Is the 3.0C70CA-M3/H RoHS-compliant and halogen-free?
Yes, the 3.0C70CA-M3/H carries the -M3 suffix, confirming it is halogen-free, RoHS-compliant, and industrial grade per Vishay's material categorization standard. Its molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin-plated per J-STD-002 and JESD 22-B102.
Does the 3.0C70CA-M3/H have polarity markings for board layout?
No - the 3.0C70CA-M3/H is a bidirectional TVS diode with no polarity marking on the SMC (DO-214AB) case. Either end may serve as anode or cathode depending on transient polarity, simplifying PCB layout and eliminating orientation-dependent placement errors.
What is the maximum junction temperature rating for the 3.0C70CA-M3/H?
The 3.0C70CA-M3/H has a maximum junction temperature (TJ) of +175 °C, as specified in Vishay Document Number 98266. This allows reliable operation in high-ambient environments such as motor drive enclosures, base station power supplies, and under-hood automotive electronics.
How does the 3.0C70CA-M3/H perform under IEC 61000-4-2 ESD testing?
The 3.0C70CA-M3/H achieves 30 kV ESD immunity per IEC 61000-4-2 in both contact and air discharge modes. This performance is confirmed in the Vishay datasheet and eliminates the need for supplemental ESD protection on sensitive inputs like sensor interfaces or communication ports.
3.0C70CA-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C70CA-M3/H FAQ
1.How can I place an order for 3.0C70CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C70CA-M3/H 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/H reliable?
The price and inventory of 3.0C70CA-M3/H 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/H is usually 5 days.
3.What payment methods are accepted for 3.0C70CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C70CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C70CA-M3/H?
3.0C70CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C70CA-M3/H 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/H?
For technical support, including 3.0C70CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C70CA-M3/H requirements.
6.How does Aetrix verify that 3.0C70CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 3.0C70CA-M3/H 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/H meets industry standards.
7.What is the process for return or replacement of 3.0C70CA-M3/H?
All 3.0C70CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C70CA-M3/H, 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/H part is unused and in its original packaging.
Return procedure for 3.0C70CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C70CA-M3/H Tags
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