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Vishay General Semiconductor - Diodes Division SMC5K30CA-M3/I
- Part No.:
- SMC5K30CA-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K30CA-M3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,299
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Product details
Overview
SMC5K30CA-M3/I 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. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V clamping voltage (VC) at 103 A (10/1000 μs), 5000 W peak pulse power, and AEC-Q101 qualification - deployed to protect MOSFETs and signal lines in automotive power electronics.
For engineers reviewing the SMC5K30CA-M3/I datasheet, SMC5K30CA-M3/I pinout, SMC5K30CA-M3/I application, or SMC5K30CA-M3/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, bidirectional polarity, thermal resistance (RthJA = 90 °C/W), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction.
Technical Context
This TVS operates as a voltage-clamped shunt protector with symmetrical bidirectional conduction, enabling suppression of both positive and negative transients without polarity constraints. Its low incremental surge resistance and fast response time (<1 ns) ensure effective clamping during lightning-induced surges and inductive switching events.
The device is rated for junction temperatures from –55 °C to +175 °C and meets IEC 61000-4-2 ESD immunity up to 30 kV (contact/air). Its thermal design supports high-power dissipation via low RthJM (4.0 °C/W) when mounted on thermally optimized PCB footprints per JEDEC 51-14.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates; defines safe signal line bias margin. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - guaranteed breakdown threshold range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 48.4 V at 103 A (10/1000 μs) - clamping voltage under standard surge waveform; determines protected circuit's maximum transient overvoltage. |
| PPPM | 5000 W (10/1000 μs) - peak pulse power handling capacity; enables robust protection against automotive load-dump and ISO 7637-2 pulses. |
| TJ max. | +175 °C - maximum junction temperature rating; supports operation in under-hood automotive environments and industrial motor drives. |
| RthJA | 90 °C/W - junction-to-ambient thermal resistance on FR4; informs minimum copper area and layout cooling requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band. Matte tin-plated leads, MSL Level 1, halogen-free, RoHS-compliant, industrial grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No polarity marking required; either terminal serves as anode or cathode depending on transient polarity. |
| Cathode (non-marked) | Reference node for unidirectional interpretation | Not applicable - device is inherently bidirectional; no functional distinction between terminals. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero-failure reliability under thermal cycling and mechanical stress. |
| 5000 W peak pulse power (10/1000 μs) | Supports protection against severe transients such as ISO 7637-2 Pulse 5a (load dump) without degradation. |
| Clamping voltage ≤ 48.4 V at 103 A | Ensures downstream 3.3 V/5 V/12 V logic and gate drivers remain within absolute maximum ratings during surge events. |
| MSL Level 1, 260 °C reflow compatible | Enables standard SMT assembly without pre-baking; suitable for high-volume automotive electronics manufacturing. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump transients up to 40 V sustained for 400 ms and superimposed spikes. IC Role / Device Role / Timing Role: Shunt TVS clamping element placed directly across input rails upstream of DC/DC converters and LDOs. Use Value: Limits rail voltage to ≤48.4 V during 10/1000 μs surges, preventing damage to automotive-grade microcontrollers and CAN transceivers. |
Use Scenario: Input stage protection for variable-frequency drives receiving AC line transients and switching noise from contactors and IGBTs. IC Role / Device Role / Timing Role: Bidirectional transient suppressor on rectified DC bus inputs prior to bulk capacitors and gate driver ICs. Use Value: Absorbs 5000 W surges without failure, maintaining system uptime in factory automation where maintenance windows are constrained. |
| Telecom Power Supply Inputs | Automotive Sensor Signal Lines |
|
Use Scenario: DC input protection for PoE-powered telecom equipment exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input, coordinated with secondary-stage MOVs and gas discharge tubes. Use Value: Fast sub-nanosecond response clamps induced transients before they propagate into isolated DC/DC modules and Ethernet PHYs. |
Use Scenario: Protection of LIN/CAN/FlexRay sensor nodes (e.g., wheel speed, pressure, temperature) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Localized bidirectional TVS placed at connector interface, before signal conditioning amplifiers and ADC front-ends. Use Value: Withstands 30 kV HBM ESD per IEC 61000-4-2, preserving sensor accuracy and avoiding false fault triggers in ADAS subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA-E3/5A (Vishay) | Lower PPPM (400 W), SMA package (smaller footprint), same VWM/VBR range, non-AEC-Q101. | Suitable for cost-sensitive consumer or industrial boards where space is constrained but surge severity is moderate. | Select SMC5K30CA-M3/I when automotive qualification, 5000 W capability, or higher thermal mass is required. |
| 1.5KE30CA (ON Semiconductor) | Through-hole DO-201 package, 5000 W rating, same VWM/VBR, no AEC-Q101, higher RthJA (~100 °C/W). | Used in legacy industrial power supplies where board real estate allows through-hole mounting and reflow compatibility is not needed. | Choose SMC5K30CA-M3/I for SMT production, automotive compliance, and superior thermal performance on FR4. |
Compared with SMAJ30CA-E3/5A and 1.5KE30CA, the SMC5K30CA-M3/I delivers identical voltage ratings with significantly higher surge robustness, automotive-grade reliability, and optimized surface-mount thermal management - making it the preferred choice for next-generation automotive and industrial control designs.
Availability
SMC5K30CA-M3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, telecom power supply inputs, and automotive sensor signal lines requiring stable component supply across extended product lifecycles.
Supply support for SMC5K30CA-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMC5K30CA-M3/I belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments where AEC-Q101 validation, precise clamping, and long-term stability are critical.
FAQ
What is the clamping voltage of the SMC5K30CA-M3/I under a 10/1000 μs surge?
The SMC5K30CA-M3/I has a maximum clamping voltage (VC) of 48.4 V at 103 A under a 10/1000 μs waveform, as specified in the Vishay datasheet (Document Number: 87024). This value defines the upper voltage limit imposed on protected circuits during standardized surge events and is measured with the device mounted on a standard FR4 test board.
Is the SMC5K30CA-M3/I suitable for automotive applications?
Yes, the SMC5K30CA-M3/I is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +175 °C operating junction temperature range, MSL Level 1 reflow compatibility, and 30 kV ESD immunity per IEC 61000-4-2 make it appropriate for engine control units, body electronics, and ADAS sensor interfaces.
Does the SMC5K30CA-M3/I have polarity markings?
No, the SMC5K30CA-M3/I is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical structure allows installation in either orientation across protected lines, simplifying layout and eliminating orientation-related assembly errors in automated SMT processes.
What is the thermal resistance of the SMC5K30CA-M3/I?
The SMC5K30CA-M3/I has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A, and a junction-to-mount thermal resistance (RthJM) of 4.0 °C/W per JEDEC 51-14. These values guide heatsinking and copper pour design for sustained surge duty cycles.
How does the SMC5K30CA-M3/I differ from the SMC5K30CAHM3/I variant?
The SMC5K30CA-M3/I is industrial-grade and halogen-free/RoHS-compliant, while the SMC5K30CAHM3/I adds AEC-Q101 qualification. Both share identical electrical characteristics and packaging, but only the HM3 suffix denotes full automotive qualification - critical for Tier 1 supplier documentation and PPAP submissions.
SMC5K30CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 103A
- Power - Peak Pulse:
- 5000W (5kW)
- 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)
SMC5K30CA-M3/I FAQ
1.How can I place an order for SMC5K30CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K30CA-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 SMC5K30CA-M3/I reliable?
The price and inventory of SMC5K30CA-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 SMC5K30CA-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K30CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K30CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K30CA-M3/I?
SMC5K30CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K30CA-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 SMC5K30CA-M3/I?
For technical support, including SMC5K30CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K30CA-M3/I requirements.
6.How does Aetrix verify that SMC5K30CA-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K30CA-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 SMC5K30CA-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K30CA-M3/I?
All SMC5K30CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K30CA-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 SMC5K30CA-M3/I part is unused and in its original packaging.
Return procedure for SMC5K30CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K30CA-M3/I Tags
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