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Vishay General Semiconductor - Diodes Division SMC3K24CA-M3/57
- Part No.:
- SMC3K24CA-M3/57
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K24CA-M3/57.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,153
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Product details
Overview
SMC3K24CA-M3/57 from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in SMC (DO-214AB) package, rated for 3000 W peak pulse power (10/1000 μs), 24 V stand-off voltage, and 38.9 V maximum clamping voltage at 77.1 A peak surge current. It provides robust overvoltage protection for automotive sensor signal lines, industrial I/O interfaces, and MOSFET gate drivers.
For engineers reviewing the SMC3K24CA-M3/57 datasheet, SMC3K24CA-M3/57 pinout, SMC3K24CA-M3/57 application, or SMC3K24CA-M3/57 equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, UL 497B recognition, and M3 halogen-free RoHS-compliant construction.
Technical Context
This TVS diode operates exclusively in bidirectional mode with no polarity marking, delivering fast response to transients induced by inductive load switching or ESD events. Its low incremental surge resistance and excellent clamping ratio (VC/VWM = 1.62) ensure predictable voltage limiting during surge conditions.
Designed for surface-mount assembly, it meets J-STD-020 MSL Level 1, supports lead-free reflow up to 260 °C peak, and is not recommended for bottom-side wave soldering. The SMC package provides mechanical robustness and thermal performance suitable for automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 26.7 V / 29.5 V - Breakdown occurs within this range at 1 mA test current |
| VC @ IPPM | 38.9 V - Clamped voltage seen across device during 77.1 A 10/1000 μs surge |
| PPPM | 3000 W - Peak transient energy absorption capability per standardized waveform |
| TJ max | +150 °C - Maximum allowable junction temperature for reliable operation |
| Polarity | Bidirectional - Symmetric clamping for AC or floating signal line protection |
| UL File | E136766 - Recognized under UL 497B for primary and secondary circuit protection |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (unmarked) | Transient current sink node | No polarity marking on bidirectional types; terminals are functionally symmetric |
| Anode (unmarked) | Transient current source node | Identical electrical behavior to cathode; interchangeable in layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| 3000 W peak pulse power | Withstands high-energy transients common in 12 V/24 V vehicle power systems |
| MSL Level 1 moisture sensitivity | Zero floor life limitation; safe for standard SMT reflow without dry pack handling |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for commercial-grade industrial and consumer designs |
| Low clamping voltage ratio | VC/VWM = 1.62 ensures minimal overvoltage stress on protected ICs during surge events |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or between signal and ground. Use Value: Limits transient voltage to ≤38.9 V, preventing damage to 3.3 V/5 V interface ICs while maintaining signal integrity. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on 24 V DC input channels. Use Value: Absorbs 3000 W pulses without degradation, enabling long-term reliability in factory automation environments. |
| Motor Drive Gate Protection | Telecom Power Interface Protection |
Use Scenario: Safeguarding high-side/low-side MOSFET gate drivers in BLDC motor inverters against Miller-induced spikes and shoot-through transients. IC Role / Device Role / Timing Role: Fast-clamping TVS placed between gate and source terminals. Use Value: Sub-nanosecond response prevents false turn-on and ensures gate oxide integrity under repetitive switching stress. | Use Scenario: Protecting PoE-powered Ethernet ports and DC power inputs in telecom access equipment from lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Secondary-level surge protector downstream of primary GDT or MOV stages. Use Value: Precise 24 V clamping aligns with 24 V PoE system rails, minimizing let-through energy to PHY and PMIC components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K24CAHM3/57 | AEC-Q101 qualified; identical electrical specs; HM3 suffix denotes automotive qualification grade | Required for automotive OEM designs requiring full AEC-Q101 documentation and traceability | Select SMC3K24CAHM3/57 when automotive qualification is mandatory; otherwise SMC3K24CA-M3/57 suffices for commercial/industrial use |
| SMC3K22CA-M3/57 | Lower VWM (22 V), lower VC (35.5 V), higher IPPM (84.5 A); same package and power rating | Better suited for 24 V nominal systems with tighter clamping margin requirements | Choose SMC3K22CA-M3/57 where lower clamping voltage is critical and 22 V stand-off is acceptable for system operating range |
Compared with SMC3K24CA-M3/57, SMC3K24CAHM3/57 adds automotive qualification without altering electrical performance, while SMC3K22CA-M3/57 trades 2 V higher stand-off for 3.4 V lower clamping-enabling tighter protection margins in 24 V rail applications.
Availability
SMC3K24CA-M3/57 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and motor drive gate safeguarding requiring stable component supply and long-term production continuity.
Supply support for SMC3K24CA-M3/57 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, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SMC3KxxCA series was developed for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where 3000 W surge immunity and AEC-Q101 compliance are essential.
FAQ
What does the "M3" suffix mean in SMC3K24CA-M3/57?
The "M3" suffix in SMC3K24CA-M3/57 indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that meet JESD 201 Class 2 whisker resistance requirements. It designates commercial-grade qualification, distinct from the HM3 automotive-qualified variant. SMC3K24CA-M3/57 is not AEC-Q101 certified, unlike its HM3 counterpart.
Is SMC3K24CA-M3/57 suitable for automotive applications?
SMC3K24CA-M3/57 is not AEC-Q101 qualified and is therefore not approved for automotive safety-critical or OEM production use. For such applications, the HM3-suffixed version SMC3K24CAHM3/57 must be used. SMC3K24CA-M3/57 remains appropriate for non-automotive industrial and consumer systems requiring robust transient protection.
What is the maximum clamping voltage of SMC3K24CA-M3/57 at rated surge current?
The maximum clamping voltage of SMC3K24CA-M3/57 is 38.9 V when subjected to its rated 77.1 A peak pulse current (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does SMC3K24CA-M3/57 have polarity markings on the package?
No, SMC3K24CA-M3/57 has no polarity markings because it is a bidirectional TVS diode. Both terminals are electrically symmetric, and the device functions identically regardless of orientation in the circuit. This simplifies PCB layout and eliminates risk of incorrect placement during assembly.
What is the thermal derating behavior of SMC3K24CA-M3/57 above 25 °C ambient?
SMC3K24CA-M3/57 exhibits linear thermal derating above TA = 25 °C, with peak pulse power decreasing to 50 % at TJ = 125 °C and reaching zero at the absolute maximum junction temperature of +150 °C. Derating curves are provided in Figure 2 of Vishay document 89433 for precise system-level thermal design.
SMC3K24CA-M3/57 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 77.1A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC3K24CA-M3/57 FAQ
1.How can I place an order for SMC3K24CA-M3/57 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K24CA-M3/57 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 SMC3K24CA-M3/57 reliable?
The price and inventory of SMC3K24CA-M3/57 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K24CA-M3/57 is usually 5 days.
3.What payment methods are accepted for SMC3K24CA-M3/57?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K24CA-M3/57 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K24CA-M3/57?
SMC3K24CA-M3/57 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K24CA-M3/57 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 SMC3K24CA-M3/57?
For technical support, including SMC3K24CA-M3/57 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K24CA-M3/57 requirements.
6.How does Aetrix verify that SMC3K24CA-M3/57 is sourced from the original manufacturer or authorized distributors?
All SMC3K24CA-M3/57 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 SMC3K24CA-M3/57 meets industry standards.
7.What is the process for return or replacement of SMC3K24CA-M3/57?
All SMC3K24CA-M3/57 units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K24CA-M3/57, 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 SMC3K24CA-M3/57 part is unused and in its original packaging.
Return procedure for SMC3K24CA-M3/57:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K24CA-M3/57 Tags
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