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Vishay General Semiconductor - Diodes Division 3.0C20CA-M3/H
- Part No.:
- 3.0C20CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C20CA-M3/H.pdf
- Description:
- 3KW, 20V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,225
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Product details
Overview
3.0C20CA-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), 32.4 V clamping voltage at 701 A peak pulse current, and 20 V stand-off voltage. It protects sensitive ICs and MOSFETs in industrial power supplies and telecom interfaces against inductive switching transients.
For engineers reviewing the 3.0C20CA-M3/H datasheet, 3.0C20CA-M3/H pinout, 3.0C20CA-M3/H application, or 3.0C20CA-M3/H equivalent, key selection criteria include clamping performance at rated IPPM, bidirectional surge handling per IEC 61000-4-5, thermal resistance (RthJA = 90 °C/W), and MSL Level 1 compliance for reflow compatibility.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown above its 22.2–24.5 V breakdown range. Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of fast-rising transients such as ESD (30 kV HBM) and lightning-induced surges (8/20 μs waveform).
Designed for placement across power rails or signal lines, it functions without polarity marking due to bidirectional symmetry and maintains stable clamping up to 175 °C junction temperature. The SMC package supports high thermal dissipation via low RthJM (4.0 °C/W) and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 22.2 V / 24.5 V - guaranteed avalanche breakdown range at 1 mA test current |
| VC @ IPPM | 32.4 V at 701 A - clamping voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 3000 W - peak pulse power handling capability under standard 10/1000 μs waveform |
| TJ max. | +175 °C - maximum junction temperature enabling operation in harsh industrial environments |
| ESD Rating | 30 kV (HBM, contact/air) - immunity level meeting IEC 61000-4-2 for system-level ESD robustness |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1, matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Surge current sink node | Bidirectional design means either terminal serves as cathode depending on transient polarity |
| Anode (unmarked end) | Surge current source node | No polarity marking required; terminals are functionally symmetric for bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or ungrounded differential signals without polarity constraints |
| 30 kW surge rating (8/20 μs) | Supports high-energy lightning surge immunity per IEC 61000-4-5 in telecom and industrial infrastructure |
| Low RthJM (4.0 °C/W) | Ensures efficient heat transfer to PCB copper, sustaining repeated surge events without thermal runaway |
| MSL Level 1 rating | Permits standard lead-free reflow assembly without pre-baking, reducing manufacturing complexity |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and control logic against voltage spikes from relay coil de-energization and motor back-EMF. IC Role / Device Role / Timing Role: Clamping transient energy before it reaches sensitive PWM controllers or isolated gate drivers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic circuits by limiting rail excursions to ≤32.4 V during 701 A surges. | Use Scenario: Surge suppression on -48 V DC power feeds and RS-485 data lines in central office equipment. IC Role / Device Role / Timing Role: Bidirectional shunt element absorbing both positive and negative polarity surges induced by lightning coupling. Use Value: Maintains signal integrity and prevents burnout of line transceivers by clamping within 32.4 V while handling 3000 W pulses. |
| Automotive Body Control Modules | Consumer Power Adapters |
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails from load dump and jump-start transients. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp placed directly at connector entry points. Use Value: Survives 175 °C junction temperature during sustained 12 V–24 V system surges, meeting AEC-Q200 stress requirements. | Use Scenario: Secondary-side output rail protection in USB PD and Qi wireless charging adapters. IC Role / Device Role / Timing Role: Final-stage transient barrier preventing surge propagation to connected mobile devices. Use Value: Delivers 30 kV ESD immunity on exposed ports while maintaining <2 μA leakage at 20 V, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Lower PPPM (600 W), same VWM (20 V), SMB package (smaller footprint, higher RthJA) | Best suited for space-constrained consumer electronics with lower surge exposure | Select when board area is critical and surge threat level is limited to IEC 61000-4-2 only |
| SMCJ20CA | Identical electrical specs and SMC package, but non-M3 suffix (halogen-containing, not RoHS-compliant) | Acceptable where environmental compliance is not mandated and cost is prioritized | Choose only if halogen-free and industrial-grade qualification are not required |
Compared with SMBJ20CA and SMCJ20CA, the 3.0C20CA-M3/H delivers 5× higher surge power handling in the same SMC footprint while guaranteeing RoHS/halogen-free compliance and MSL Level 1 reflow readiness-making it optimal for industrial and telecom designs requiring long-term reliability and regulatory alignment.
Availability
3.0C20CA-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 full compliance traceability.
Supply support for 3.0C20CA-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, and protection devices with emphasis on reliability and high-power handling.
The 3.0CxxCA-M3 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, high-energy transient suppression in demanding industrial, telecom, and automotive power systems.
FAQ
What is the breakdown voltage range for the 3.0C20CA-M3/H?
The 3.0C20CA-M3/H has a guaranteed breakdown voltage range of 22.2 V to 24.5 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This ensures consistent avalanche triggering behavior across production lots and temperature extremes, supporting reliable overvoltage protection in 20 V nominal systems.
Does the 3.0C20CA-M3/H require polarity-aware PCB layout?
No-the 3.0C20CA-M3/H is a bidirectional TVS diode with no polarity marking on the SMC package. Either terminal functions as cathode or anode depending on transient polarity, eliminating orientation constraints during placement and simplifying layout for AC-coupled or floating signal paths.
What is the maximum clamping voltage of the 3.0C20CA-M3/H under surge conditions?
The 3.0C20CA-M3/H clamps to a maximum of 32.4 V at 701 A peak pulse current under the standard 10/1000 μs waveform. This value is specified in the Vishay datasheet (Doc #98266, Rev 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is the 3.0C20CA-M3/H compliant with lead-free reflow requirements?
Yes-the 3.0C20CA-M3/H carries the -M3 suffix indicating halogen-free, RoHS-compliant construction and qualification to MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads meet J-STD-002 solderability requirements.
How does the 3.0C20CA-M3/H perform under repeated surge stress?
The 3.0C20CA-M3/H sustains repeated surge events due to low incremental surge resistance and thermal design optimized for SMC packaging: RthJM is 4.0 °C/W and RthJA is 90 °C/W (JEDEC 51-2A, FR4, 2 oz Cu). Derating curves in the datasheet confirm stable operation up to 175 °C junction temperature across multiple pulses.
3.0C20CA-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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)
3.0C20CA-M3/H FAQ
1.How can I place an order for 3.0C20CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C20CA-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 3.0C20CA-M3/H reliable?
The price and inventory of 3.0C20CA-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 3.0C20CA-M3/H is usually 5 days.
3.What payment methods are accepted for 3.0C20CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C20CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C20CA-M3/H?
3.0C20CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C20CA-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 3.0C20CA-M3/H?
For technical support, including 3.0C20CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C20CA-M3/H requirements.
6.How does Aetrix verify that 3.0C20CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 3.0C20CA-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 3.0C20CA-M3/H meets industry standards.
7.What is the process for return or replacement of 3.0C20CA-M3/H?
All 3.0C20CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C20CA-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 3.0C20CA-M3/H part is unused and in its original packaging.
Return procedure for 3.0C20CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C20CA-M3/H Tags
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