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Vishay General Semiconductor - Diodes Division SMC5K24A-M3/I
- Part No.:
- SMC5K24A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K24A-M3/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,361
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Product details
Overview
SMC5K24A-M3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V maximum clamping voltage (VC) at 129 A peak pulse current (IPPM, 10/1000 μs), and 5000 W peak pulse power rating.
For engineers reviewing the SMC5K24A-M3/I datasheet, SMC5K24A-M3/I pinout, SMC5K24A-M3/I application, or SMC5K24A-M3/I equivalent, this device is selected for high-energy surge suppression in automotive power rails, industrial sensor interfaces, and DC power supply inputs where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are not required - as SMC5K24A is industrial-grade only.
Technical Context
This TVS diode operates as a unidirectional clamping device, conducting only during positive transients relative to its cathode-marked terminal. Its junction capacitance is 129 pF at VWM (measured at 1 MHz, zero bias), and thermal resistance is 90 °C/W (junction-to-ambient) on standard FR4 PCB mounting.
It delivers 5000 W peak pulse power under 10/1000 μs waveform and sustains 775 A peak pulse current under 8/20 μs waveform, with clamping voltage rising to 51.6 V under that higher-energy stress. The device is rated for -55 °C to +150 °C operating junction temperature and meets UL 497B safety recognition (E136766).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on above system operating voltage. |
| VC @ IPPM (10/1000 μs) | 38.9 V at 129 A - Clamping voltage under standard surge test; limits downstream voltage stress to ≤39 V during 10/1000 μs events. |
| PPPM | 5000 W - Peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 1/2a/5a in industrial environments. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables operation in under-hood or enclosed industrial enclosures without derating below ambient. |
| ESD immunity | 30 kV HBM (contact & air) - Robust electrostatic discharge tolerance per IEC 61000-4-2; protects against handling and system-level ESD events. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 24 V rail); polarity-sensitive - reverse connection disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Protects only positive-going transients on DC lines - ideal for single-polarity power rails and signal lines referenced to ground. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage overshoot during surge events, reducing stress on downstream ICs and MOSFETs without requiring additional series impedance. |
| Fast response time (<1 ns) | Activates before most semiconductor damage thresholds are exceeded, enabling effective protection of fast-switching circuits and microcontrollers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - no baking required prior to assembly. |
| UL 497B recognized (E136766) | Validated for use in safety-critical secondary circuit protection per UL standards - supports regulatory compliance in industrial and telecom equipment. |
Applications
| Industrial Motor Control | Automotive Body Control Module (BCM) Power Input |
|---|---|
|
Use Scenario: Protection of 24 V DC input to PLC I/O modules against inductive kickback from solenoid drivers and relay coils. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point, shunting surge energy to chassis ground. Use Value: Limits transient voltage to ≤38.9 V during 129 A 10/1000 μs surges, preventing latch-up or gate oxide damage in upstream DC-DC controllers. |
Use Scenario: Surge suppression on fused 24 V battery feed to BCM power management ICs in commercial vehicles. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of LDOs and CAN transceivers to absorb load-dump and jump-start transients. Use Value: Withstands 5000 W pulses and maintains clamping below 39 V, preserving functionality of 3.3 V/5 V logic despite harsh vehicle electrical environment. |
| Telecom Power Supply Output | Factory Automation Sensor Interface |
|
Use Scenario: Secondary-side protection on 24 V output of isolated AC/DC adapters powering PoE injectors and base station control boards. IC Role / Device Role / Timing Role: Final-stage TVS ensuring output rail integrity against backfeed surges and coupling from adjacent switching circuits. Use Value: 129 pF junction capacitance avoids signal integrity degradation on 24 V bias rails feeding high-speed digital isolators and ADC references. |
Use Scenario: Protection of analog 4–20 mA transmitter outputs and digital IO lines connected to programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Point-of-entry TVS on field-side connectors, guarding against ESD and lightning-induced surges entering via long cable runs. Use Value: 30 kV HBM ESD rating and 51.6 V clamping under 8/20 μs surges prevent false triggering and component failure in noisy factory floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-M3/5B | Same VWM (24 V), lower PPPM (600 W), SMB package (smaller footprint, higher RthJA = 110 °C/W) | Lower energy handling; suitable only for board-level ESD and low-energy transients, not for industrial load-switching surges. | Select when space-constrained layouts prioritize footprint over surge robustness, and peak currents remain below 20 A. |
| SMCJ24A-M3/86A | Same VWM (24 V), higher PPPM (1500 W), identical SMC package but lower clamping voltage (35.5 V @ 42.1 A) | Mid-tier energy rating; insufficient for 5000 W requirements but better clamping performance than SMC5K24A-M3/I at lower currents. | Choose when system-level testing confirms 1500 W surge immunity is adequate and tighter clamping is prioritized over ultimate energy capacity. |
Compared with SMBJ24A-M3/5B and SMCJ24A-M3/86A, the SMC5K24A-M3/I delivers 3.3× and 3.3× higher peak pulse power respectively, making it uniquely suited for high-energy industrial and transportation surge environments where clamping voltage margin must be preserved under extreme current stress.
Availability
SMC5K24A-M3/I is available at Aetrix Electronics and suitable for industrial motor control, telecom power supplies, factory automation sensor interfaces, and commercial vehicle BCM power inputs requiring stable component supply across extended production lifecycles.
Supply support for SMC5K24A-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, ruggedness, and application-specific validation.
The SMC5K24A-M3/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for industrial and transportation systems demanding 5 kW surge resilience and consistent clamping performance under repetitive transient stress.
FAQ
What is the clamping voltage of the SMC5K24A-M3/I under a 10/1000 μs surge?
The SMC5K24A-M3/I has a maximum clamping voltage (VC) of 38.9 V at 129 A peak pulse current under the standard 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 87742 and reflects worst-case device behavior at TA = 25 °C. The SMC5K24A-M3/I maintains this clamping performance across its full operating temperature range when properly mounted on a standard FR4 PCB.
Is the SMC5K24A-M3/I AEC-Q101 qualified?
No, the SMC5K24A-M3/I is not AEC-Q101 qualified. Per the Vishay datasheet, AEC-Q101 qualification applies only to SMC5K10A through SMC5K20A variants with HM3 suffix (e.g., SMC5K20AHM3_A/I). The SMC5K24A-M3/I is designated for industrial-grade applications and carries the M3 suffix indicating halogen-free, RoHS-compliant construction without automotive qualification.
What does the "-M3/I" suffix mean in SMC5K24A-M3/I?
The "-M3" suffix denotes halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, while "/I" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3500 units. This differs from "/H", which indicates 7-inch tape-and-reel with 850 units. The SMC5K24A-M3/I is fully compatible with standard SMT pick-and-place equipment using industry-standard carrier tape specifications.
Can the SMC5K24A-M3/I replace the SMCJ24A in an existing design?
The SMC5K24A-M3/I is not a direct replacement for the SMCJ24A due to significantly higher peak pulse power (5000 W vs. 1500 W) and higher clamping voltage (38.9 V vs. 35.5 V at lower current). While both share the same SMC package and VWM, the SMC5K24A-M3/I draws more surge current and may require revised PCB layout for thermal management. Use the SMC5K24A-M3/I only when validated for higher-energy threat levels.
What is the junction-to-ambient thermal resistance of the SMC5K24A-M3/I?
The junction-to-ambient thermal resistance (RthJA) of the SMC5K24A-M3/I is 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A guidelines. This value assumes a 2 oz. copper footprint matching the recommended pad layout in the Vishay datasheet. Exceeding 150 °C junction temperature risks parametric shift or failure; derating is required above TA = 25 °C per Figure 2 in document 87742.
SMC5K24A-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:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K24A-M3/I FAQ
1.How can I place an order for SMC5K24A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K24A-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 SMC5K24A-M3/I reliable?
The price and inventory of SMC5K24A-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 SMC5K24A-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K24A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K24A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K24A-M3/I?
SMC5K24A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K24A-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 SMC5K24A-M3/I?
For technical support, including SMC5K24A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K24A-M3/I requirements.
6.How does Aetrix verify that SMC5K24A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K24A-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 SMC5K24A-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K24A-M3/I?
All SMC5K24A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K24A-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 SMC5K24A-M3/I part is unused and in its original packaging.
Return procedure for SMC5K24A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K24A-M3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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