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Vishay General Semiconductor - Diodes Division SMC5K24CA-M3/I
- Part No.:
- SMC5K24CA-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K24CA-M3/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,018
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Product details
Overview
SMC5K24CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for clamping voltage transients up to 5000 W (10/1000 μs), with breakdown voltage 26.7–29.5 V, stand-off voltage 24 V, and clamping voltage 38.9 V at 129 A. It protects MOSFETs and signal lines in automotive powertrain control units.
For engineers reviewing the SMC5K24CA-M3/I datasheet, SMC5K24CA-M3/I pinout, SMC5K24CA-M3/I application, or SMC5K24CA-M3/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RthJA = 90 °C/W), junction capacitance data, and real-world protection use cases for industrial and automotive transient suppression.
Technical Context
The SMC5K24CA-M3/I operates as a bidirectional avalanche diode, leveraging silicon p-n junction breakdown to clamp transient overvoltages within nanoseconds. Its low incremental surge resistance (0.30 Ω typical) and fast response time ensure minimal overshoot during 8/20 μs lightning surges up to 775 A.
Designed for high-reliability environments, it meets AEC-Q101 stress testing requirements and UL 497B safety certification (E136766). Its M3 suffix denotes halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 26.7–29.5 V at 1.0 mA - defines minimum voltage at which avalanche conduction begins, ensuring reliable triggering above system operating voltage. |
| Stand-off Voltage VWM | 24 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA, matching 24 V nominal automotive and industrial bus systems. |
| Clamping Voltage VC | 38.9 V at 129 A (10/1000 μs) - peak voltage seen by protected circuit during 5000 W transient, limiting stress on downstream ICs. |
| Peak Pulse Power | 5000 W (10/1000 μs) - energy-handling capacity sufficient for ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 level 4 surges. |
| Junction Temperature Range | –55 °C to +175 °C - enables operation in under-hood automotive and industrial motor drive environments without derating. |
| Thermal Resistance RthJA | 90 °C/W - determines temperature rise under sustained power dissipation; requires adequate PCB copper area for thermal management. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band. Case molded with UL 94 V-0 flammability rating; terminals are matte tin-plated for reliable solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Acts as cathode during positive transients; connects to protected line needing clamping to ground or rail. |
| Cathode | Transient current exit (bidirectional) | Acts as anode during negative transients; typically tied to ground or common reference plane for low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or dual-polarity signal lines (e.g., CAN, LIN, sensor bridges) without polarity constraints. |
| 5000 W peak pulse power (10/1000 μs) | Handles severe load-dump and inductive switching events in 24 V systems without failure. |
| AEC-Q101 qualified | Validated for automotive powertrain, body electronics, and ADAS modules requiring zero-defect reliability. |
| UL 497B recognized (E136766) | Meets safety standards for telecom and industrial equipment requiring certified surge protection components. |
Applications
| Automotive Powertrain Control | Industrial Motor Drive I/O Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients (>35 V, 100 ms) on 24 V supply rails feeding engine control unit (ECU) microcontrollers and gate drivers. IC Role / Device Role / Timing Role: TVS diode placed at ECU input filter stage to clamp overvoltage before DC-DC converters and LDOs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies by limiting rail voltage to ≤38.9 V during worst-case transients. |
Use Scenario: Protecting analog current-sense inputs and digital enable lines of 3-phase inverter gate drivers against IGBT switching noise and ground bounce. IC Role / Device Role / Timing Role: Bidirectional TVS shunting fast-rising edge-induced spikes (<1 ns rise time) on isolated feedback paths. Use Value: Maintains signal integrity by suppressing sub-100 ns transients that would otherwise corrupt ADC readings or trigger false fault shutdowns. |
| Telecom Base Station DC Feeds | Consumer Appliance Motor Control Boards |
|
Use Scenario: Guarding -48 V DC power inputs of remote radio units (RRUs) against lightning-induced surges coupled via long outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end protector in multi-stage cascade (TVS → MOV → GDT), handling initial 8/20 μs surge energy. Use Value: Absorbs up to 775 A peak current (8/20 μs) while maintaining clamping below –60 V, preserving upstream rectifier and hold-up capacitor integrity. |
Use Scenario: Shielding Hall-effect rotor position sensors and microcontroller GPIOs in washing machine drum motor controllers from commutation spikes. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to sensor connector to minimize loop inductance and maximize clamping speed. Use Value: Enables robust operation at 175 °C junction temperature, surviving repeated 200 V/10 μs spikes during brushless DC motor startup and braking. |
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-M3/52 | Lower peak pulse power (600 W vs. 5000 W); SMB (DO-214AA) package; same VWM/VBR range. | Suitable only for low-energy ESD and low-power signal-line protection-not for load-dump or lightning surges. | Select when board space is constrained and surge energy is limited to <100 mJ (e.g., USB, I²C). |
| SMC5K24A-M3/I | Unidirectional version; identical VBR, VWM, and clamping, but only suppresses positive transients. | Requires external series diode or bias network for bidirectional protection; used where polarity is known and controlled. | Choose only if system architecture guarantees unidirectional transients (e.g., single-rail DC outputs with grounded return). |
Compared with SMBJ24CA-M3/52 and SMC5K24A-M3/I, the SMC5K24CA-M3/I uniquely delivers 5000 W bidirectional clamping in SMC package with AEC-Q101 qualification-making it the sole option for high-energy automotive and industrial 24 V bus protection without redesigning layout or adding external components.
Availability
SMC5K24CA-M3/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive I/O protection, and telecom base station DC feeds requiring stable component supply across extended production lifecycles.
Supply support for SMC5K24CA-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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMC5K24CA-M3/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh automotive, industrial, and telecom environments where AEC-Q101 compliance and UL safety recognition are mandatory.
FAQ
What is the clamping voltage of the SMC5K24CA-M3/I at its rated peak pulse current?
The SMC5K24CA-M3/I has a maximum clamping voltage of 38.9 V at 129 A peak pulse current under the 10/1000 μs waveform condition. This value is measured per Fig. 3 in the official Vishay datasheet (Doc. #87024) and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Is the SMC5K24CA-M3/I suitable for automotive applications?
Yes, the SMC5K24CA-M3/I is AEC-Q101 qualified and explicitly rated for automotive powertrain and body electronics applications. Its –55 °C to +175 °C operating junction temperature range, halogen-free M3 construction, and UL 497B safety recognition confirm its suitability for under-hood and chassis-mounted systems.
What does the "-M3/I" suffix indicate in SMC5K24CA-M3/I?
The "-M3" suffix denotes halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. The "/I" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3500 units per reel.
How does the SMC5K24CA-M3/I differ from unidirectional TVS diodes like SMC5K24A-M3/I?
The SMC5K24CA-M3/I is bidirectional and suppresses transients of either polarity without requiring external biasing. In contrast, SMC5K24A-M3/I is unidirectional and only clamps positive transients relative to ground-making it unsuitable for AC-coupled or floating signal lines unless paired with additional components.
What is the thermal resistance junction-to-ambient (RthJA) for the SMC5K24CA-M3/I?
The SMC5K24CA-M3/I has a typical thermal resistance junction-to-ambient (RthJA) of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A. This value assumes a 2 oz. copper footprint and must be accounted for in thermal design to avoid exceeding the 175 °C maximum junction temperature during repetitive surge events.
SMC5K24CA-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):
- 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/I FAQ
1.How can I place an order for SMC5K24CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K24CA-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 SMC5K24CA-M3/I reliable?
The price and inventory of SMC5K24CA-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 SMC5K24CA-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K24CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K24CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K24CA-M3/I?
SMC5K24CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K24CA-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 SMC5K24CA-M3/I?
For technical support, including SMC5K24CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K24CA-M3/I requirements.
6.How does Aetrix verify that SMC5K24CA-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K24CA-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 SMC5K24CA-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K24CA-M3/I?
All SMC5K24CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K24CA-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 SMC5K24CA-M3/I part is unused and in its original packaging.
Return procedure for SMC5K24CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K24CA-M3/I Tags
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