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Vishay General Semiconductor - Diodes Division SMC5K24CA-M3/H
- Part No.:
- SMC5K24CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K24CA-M3/H.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:256
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Product details
Overview
SMC5K24CA-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. It features a 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V clamping voltage (VC) at 129 A (10/1000 μs), and 5000 W peak pulse power rating - deployed to protect MOSFETs, ICs, and sensor signal lines against lightning-induced transients and inductive switching surges in automotive and industrial systems.
For engineers reviewing the SMC5K24CA-M3/H datasheet, SMC5K24CA-M3/H pinout, SMC5K24CA-M3/H application, or SMC5K24CA-M3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RthJA = 90 °C/W), junction capacitance behavior, and precise mechanical dimensions per DO-214AB outline - all critical for ESD-hardened PCB layout and transient immunity validation.
Technical Context
This TVS operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown, with bidirectional symmetry enabling protection on AC-coupled or floating signal paths. Its low incremental surge resistance and sub-nanosecond response time ensure effective suppression of fast-rising transients such as IEC 61000-4-2 ESD (30 kV contact/air) and 8/20 μs lightning surges.
The device is rated for continuous operation from –55 °C to +175 °C junction temperature, meets MSL Level 1 per J-STD-020, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. The halogen-free, RoHS-compliant molding compound achieves UL 94 V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range for protected line. |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - tight breakdown tolerance ensures predictable turn-on threshold across temperature and unit variation. |
| VC @ IPPM | 38.9 V at 129 A (10/1000 μs) - clamping voltage under standard surge waveform; determines maximum stress imposed on downstream circuitry. |
| PPPM | 5000 W (10/1000 μs) - peak transient energy handling capacity; supports robust protection in automotive load-dump and industrial motor drive environments. |
| TJ max | +175 °C - extended junction temperature rating enables use in under-hood automotive modules and high-ambient industrial enclosures. |
| RthJA | 90 °C/W - thermal resistance to ambient on standard FR4 PCB; informs derating requirements for sustained surge duty cycles. |
| ESD Rating | ±30 kV HBM (contact & air) - exceeds IEC 61000-4-2 Level 4, suitable for front-end interface protection without additional ESD stages. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); recommended mounting pad layout provided in Vishay document 87024.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Functions as either anode or cathode depending on polarity of surge; symmetric terminals simplify layout on differential or AC lines. |
| Cathode | Transient current exit point (bidirectional) | Electrically identical to anode terminal; no polarity marking required - reduces assembly error risk and supports dual-direction protection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled, floating, or differential signal paths without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control, ADAS, and body electronics. |
| 5000 W peak pulse power (10/1000 μs) | Supports high-energy transients common in 12 V/24 V vehicle systems and industrial PLC I/O modules without derating. |
| UL 497B recognition (E136766) | Confirms safety compliance for telecom and industrial equipment requiring certified surge protection components. |
| Halogen-free, RoHS-compliant, MSL Level 1 | Enables lead-free reflow assembly at 260 °C peak without moisture sensitivity concerns or environmental compliance barriers. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protection of 24 V supply rails feeding ECUs, lighting controllers, and actuators against load dump and jump-start transients. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed upstream of DC/DC converters and LDOs to limit input surge stress. Use Value: Withstands 5000 W pulses and operates up to +175 °C, eliminating need for parallel devices or oversized heatsinking in compact under-hood modules. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) and digital interfaces (CAN, RS-485) in factory-floor sensors exposed to EMI and ground bounce. IC Role / Device Role / Timing Role: Fast-response transient suppressor located at connector entry point to shunt induced surges before reaching signal conditioning ICs. Use Value: 38.9 V clamping at 129 A and ±30 kV ESD rating prevent latch-up or damage to precision op-amps and isolated transceivers. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Surge protection on telephone line interface cards and DSL splitter inputs subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional TVS connected across tip/ring pair to clamp common-mode transients while preserving signal integrity. Use Value: Symmetric breakdown (26.7–29.5 V) and low clamping ratio (VC/VWM = 1.62) minimize distortion on voice-band signals during surge events. |
Use Scenario: Input-stage protection for BLDC motor drivers in washing machines and HVAC systems where relay switching generates >1 kV spikes. IC Role / Device Role / Timing Role: Primary surge absorber on DC bus input, coordinated with MOVs and RC snubbers to handle repetitive inductive kickback. Use Value: 90 °C/W RthJA and 175 °C TJmax allow reliable operation in thermally constrained appliance enclosures without active cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA-E3/52 (Vishay) | Lower PPPM (600 W), SMB (DO-214AA) package, same VWM/VBR/VC specs but reduced surge capacity. | Suitable for lower-energy consumer electronics; insufficient for automotive load-dump or industrial 8/20 μs surges. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (1 kV/2 Ω). |
| 1.5KE24CA (ON Semiconductor) | Through-hole DO-201 package, 5000 W rating, but higher RthJA (~100 °C/W) and no AEC-Q101 qualification. | Acceptable for industrial fixed installations; not qualified for automotive vibration, thermal cycling, or production traceability. | Choose only for cost-sensitive, non-automotive applications where reflow compatibility and MSL Level 1 are not required. |
Compared with SMBJ24CA-E3/52 and 1.5KE24CA, the SMC5K24CA-M3/H uniquely combines AEC-Q101 qualification, surface-mount SMC packaging, 5000 W capability, and UL 497B recognition - making it the only option among the three qualified for automotive front-end power distribution and high-reliability industrial fieldbus nodes.
Availability
SMC5K24CA-M3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor signal lines, telecom line interface, and consumer appliance motor control requiring stable component supply across long-lifecycle programs.
Supply support for SMC5K24CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMC5KxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure resilience and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of SMC5K24CA-M3/H at its rated peak pulse current?
The SMC5K24CA-M3/H has a maximum clamping voltage (VC) of 38.9 V at 129 A under the 10/1000 μs waveform. This value is measured per Figure 3 in Vishay document 87024 and represents the upper bound of voltage seen by protected circuitry during a standardized surge event. The SMC5K24CA-M3/H maintains this clamping performance across its full operating temperature range (–55 °C to +175 °C), with minimal derating required below 25 °C ambient.
Is SMC5K24CA-M3/H qualified for automotive applications?
Yes, the SMC5K24CA-M3/H is AEC-Q101 qualified, as confirmed in the "Ratings and Characteristics Curves" section of Vishay document 87024. It undergoes stress testing for temperature cycling, high-temperature operating life, and mechanical shock per AEC-Q101 Rev D. The SMC5K24CA-M3/H is explicitly intended for automotive powertrain, chassis, and body electronics where transient immunity and long-term reliability are critical.
What is the package type and mounting specification for SMC5K24CA-M3/H?
The SMC5K24CA-M3/H uses the SMC (DO-214AB) surface-mount package, with overall dimensions of 7.11 mm × 6.22 mm × 2.62 mm. It features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is rated MSL Level 1 (peak reflow temperature 260 °C). The SMC5K24CA-M3/H requires the mounting pad layout specified in Vishay's package drawing - no cathode band marking due to bidirectional symmetry.
Does SMC5K24CA-M3/H meet UL safety certification?
Yes, the SMC5K24CA-M3/H carries UL recognition under file number E136766 per UL 497B for telecommunications primary protector applications. This certification validates its dielectric strength, flammability (UL 94 V-0), and surge withstand capability for use in safety-critical telecom and industrial equipment. The SMC5K24CA-M3/H is listed as a recognized component, not a system-level assembly.
How does the thermal resistance of SMC5K24CA-M3/H affect its surge handling capability?
The SMC5K24CA-M3/H has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W on standard FR4 with 2 oz. copper, per JEDEC 51-2A. This value directly impacts repetitive surge capability: at elevated ambient temperatures, the device must be derated per Figure 2 in document 87024 to avoid exceeding +175 °C junction temperature. The SMC5K24CA-M3/H also features low junction-to-mount resistance (RthJM = 4.0 °C/W), supporting enhanced heat transfer when mounted on thermal pads or metal-core PCBs.
SMC5K24CA-M3/H 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):
- 129A
- 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)
SMC5K24CA-M3/H FAQ
1.How can I place an order for SMC5K24CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K24CA-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 SMC5K24CA-M3/H reliable?
The price and inventory of SMC5K24CA-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 SMC5K24CA-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K24CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K24CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K24CA-M3/H?
SMC5K24CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K24CA-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 SMC5K24CA-M3/H?
For technical support, including SMC5K24CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K24CA-M3/H requirements.
6.How does Aetrix verify that SMC5K24CA-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K24CA-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 SMC5K24CA-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K24CA-M3/H?
All SMC5K24CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K24CA-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 SMC5K24CA-M3/H part is unused and in its original packaging.
Return procedure for SMC5K24CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K24CA-M3/H Tags
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