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Vishay General Semiconductor - Diodes Division 3.0C120CA-M3/H
- Part No.:
- 3.0C120CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C120CA-M3/H.pdf
- Description:
- 3KW, 120V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,149
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Product details
Overview
3.0C120CA-M3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode 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, and 193 V clamping voltage at 15.5 A. It protects MOSFETs, ICs, and sensor signal lines in industrial and telecom power interfaces.
For engineers reviewing the 3.0C120CA-M3/H datasheet, 3.0C120CA-M3/H pinout, 3.0C120CA-M3/H application, or 3.0C120CA-M3/H equivalent, key selection criteria include bidirectional clamping capability, 175 °C junction temperature rating, MSL Level 1 moisture sensitivity, and compliance with IEC 61000-4-2 ESD (30 kV contact/air).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector triggered by transient overvoltage events. Its silicon avalanche structure delivers sub-nanosecond response time and low incremental surge resistance, enabling effective suppression of inductive switching spikes and lightning-induced surges on DC power rails and signal paths.
The device is rated for bidirectional operation with symmetric breakdown (133–147 V), 120 V maximum reverse stand-off voltage, and 193 V clamping voltage at 15.5 A (10/1000 μs). Thermal design is supported by RthJA = 90 °C/W and RthJM = 4.0 °C/W, allowing reliable operation up to +175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 120 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 133 V / 147 V - Breakdown voltage range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 193 V @ 15.5 A - Clamping voltage during 10/1000 μs surge; limits protected circuit stress |
| PPPM | 3000 W - Peak pulse power handling for 10/1000 μs waveform; determines surge energy capacity |
| TJ max | +175 °C - Maximum junction temperature; enables use in high-ambient industrial environments |
| ESD Rating | 30 kV (IEC 61000-4-2, contact & air mode) - Robust electrostatic discharge immunity for assembly and field operation |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 9.5 mm x 7.0 mm footprint and 2.4 mm height |
Pinout & Package
SMC (DO-214AB) package: molded plastic case with two coplanar matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Bidirectional polarity; no marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Surge current return path | Both terminals are electrically symmetrical; either lead may serve as cathode or anode depending on transient polarity |
| Anode (Cathode) | Surge current injection path | Identical terminal construction supports bidirectional clamping without orientation dependency during PCB placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 30 kW surge rating (8/20 μs) | Supports high-current lightning surge immunity per IEC 61000-4-5 Level 4 in telecom and industrial ports |
| MSL Level 1 (260 °C peak) | Allows standard reflow soldering without pre-baking; reduces manufacturing complexity and cost |
| Halogen-free & RoHS-compliant (-M3 suffix) | Fulfills environmental compliance requirements for global industrial and consumer electronics markets |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive ICs |
Applications
| Industrial Motor Drive Protection | Telecom Power Input Stage |
|---|---|
Use Scenario: Suppresses inductive kickback from relay coils and brushed DC motor commutation in PLC I/O modules. IC Role / Device Role / Timing Role: Shunt TVS placed across DC bus or coil terminals to clamp voltage spikes before they reach gate drivers or microcontrollers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic and MOSFET gate oxides under repeated 100–500 V transients. | Use Scenario: Protects primary-side DC-DC converter inputs in base station power supplies exposed to lightning-induced surges on -48 V telecom lines. IC Role / Device Role / Timing Role: Front-end transient suppressor located upstream of input filter and rectifier, absorbing >3000 W pulses per IEC 61000-4-5. Use Value: Maintains system uptime by preventing fuse blowing or MOSFET avalanche failure during outdoor installation surges. |
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
Use Scenario: Guards LIN bus transceivers and power window motor drivers against load dump and jump-start transients in 12 V systems. IC Role / Device Role / Timing Role: Bidirectional TVS connected between supply rail and ground, activated within nanoseconds of overvoltage onset. Use Value: Ensures ASIL-B functional safety compliance by limiting rail voltage to ≤193 V during 120 V load dump events. | Use Scenario: Shields analog front-end inputs of pressure/temperature sensors in factory automation equipment from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF at 0 V) placed directly at connector interface to minimize signal distortion. Use Value: Preserves 12-bit ADC accuracy by limiting ESD-induced offset shift and preventing op-amp saturation during 30 kV contact discharge. |
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 peak pulse power (600 W vs. 3000 W); same VWM (120 V), but higher VC (196 V @ 3.1 A) | Not suitable for high-energy lightning surges; limited to board-level ESD and low-energy switching noise | Select only when space-constrained SMB package is mandatory and surge energy remains below 100 mJ |
| 1.5KE120CA | Higher VC (196 V @ 15.3 A); through-hole DO-201 package; lower thermal resistance (RthJA ≈ 10 °C/W) | Requires PCB real estate and wave-solder process; better for high-reliability power supply outputs where airflow cools leads | Choose when legacy through-hole assembly is required and layout allows larger footprint with superior heat dissipation |
Compared with SMBJ120CA and 1.5KE120CA, the 3.0C120CA-M3/H delivers 5× higher surge power in SMC form factor while maintaining industry-standard clamping performance and MSL-1 reflow compatibility-making it optimal for modern high-density industrial power interfaces requiring robust, surface-mount surge resilience.
Availability
3.0C120CA-M3/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control units, and sensor interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for 3.0C120CA-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 ruggedness.
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 sustained surge immunity and thermal stability are critical.
FAQ
What is the maximum clamping voltage of the 3.0C120CA-M3/H under a 10/1000 μs surge?
The 3.0C120CA-M3/H has a maximum clamping voltage (VC) of 193 V at 15.5 A for a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable voltage limiting during standardized surge events. The clamping performance is guaranteed across the full operating temperature range (–55 °C to +175 °C) and forms the basis for safe margin design in protected circuits.
Is the 3.0C120CA-M3/H suitable for IEC 61000-4-5 Level 4 surge testing?
Yes, the 3.0C120CA-M3/H supports IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line) due to its 30 kW peak pulse rating at 8/20 μs and 193 V clamping voltage. Its 15.5 A surge current capability at 10/1000 μs correlates to ~200 A at 8/20 μs per standard derating curves, exceeding Level 4 requirements when properly mounted on adequate copper area.
Does the 3.0C120CA-M3/H require orientation during PCB placement?
No-the 3.0C120CA-M3/H is a bidirectional TVS diode with symmetrical electrical characteristics; both terminals are functionally identical. There is no polarity marking on the SMC package, and the device clamps equally for positive or negative transients. This eliminates orientation errors during automated placement and simplifies layout for AC or floating signal lines.
What is the thermal resistance from junction to ambient (RthJA) for the 3.0C120CA-M3/H?
The 3.0C120CA-M3/H has a typical RthJA of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A (2 oz. copper, defined footprint). This value assumes minimal copper area; adding thermal pads or internal planes can reduce RthJA significantly. For thermal design, junction temperature must stay ≤175 °C under worst-case surge duty cycle and ambient conditions.
How does the -M3 suffix affect the 3.0C120CA-M3/H specification?
The -M3 suffix indicates halogen-free molding compound, RoHS compliance, industrial-grade qualification, and passing of JESD 201 Class 2 whisker testing. It does not alter electrical parameters but confirms material safety and long-term reliability for high-reliability applications. The "/H" denotes 7-inch tape-and-reel packaging (850 units per reel), not a variant change.
3.0C120CA-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):
- 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:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C120CA-M3/H FAQ
1.How can I place an order for 3.0C120CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C120CA-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 3.0C120CA-M3/H reliable?
The price and inventory of 3.0C120CA-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 3.0C120CA-M3/H is usually 5 days.
3.What payment methods are accepted for 3.0C120CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C120CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C120CA-M3/H?
3.0C120CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C120CA-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 3.0C120CA-M3/H?
For technical support, including 3.0C120CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C120CA-M3/H requirements.
6.How does Aetrix verify that 3.0C120CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 3.0C120CA-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 3.0C120CA-M3/H meets industry standards.
7.What is the process for return or replacement of 3.0C120CA-M3/H?
All 3.0C120CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C120CA-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 3.0C120CA-M3/H part is unused and in its original packaging.
Return procedure for 3.0C120CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C120CA-M3/H Tags
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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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