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Vishay General Semiconductor - Diodes Division SMC5K22CA-M3/H
- Part No.:
- SMC5K22CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K22CA-M3/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,505
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Product details
Overview
SMC5K22CA-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 with 5000 W peak pulse power (10/1000 μs), 22 V stand-off voltage (VWM), and 35.5 V maximum clamping voltage (VC) at 141 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC5K22CA-M3/H datasheet, SMC5K22CA-M3/H pinout, SMC5K22CA-M3/H application, or SMC5K22CA-M3/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 175 °C maximum junction temperature, low incremental surge resistance, and compatibility with automated SMT assembly using matte tin-plated leads.
Technical Context
The SMC5K22CA-M3/H operates as a voltage-clamped shunt protector triggered by transient overvoltage events. Its silicon avalanche structure enables sub-nanosecond response time and stable breakdown at 24.4–26.9 V (VBR, 1 mA test current), with clamping performance validated under both 10/1000 μs (5000 W) and 8/20 μs (40 kW) waveforms.
Thermal design is supported by RthJA = 90 °C/W and RthJM = 4.0 °C/W, enabling reliable operation up to 175 °C junction temperature. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing, confirming robustness for reflow-soldered industrial and automotive deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below circuit rail voltage. |
| VBR (min/max) | 24.4 V / 26.9 V - Breakdown voltage range at 1 mA; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 35.5 V at 141 A - Clamping voltage during 10/1000 μs surge; limits downstream voltage stress to <36 V under worst-case 5 kW event. |
| PPPM | 5000 W - Peak pulse power rating (10/1000 μs); supports protection against lightning-induced surges and inductive switching transients. |
| TJ max. | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-ambient industrial enclosures. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD immunity per JEDEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no cathode band. Matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No polarity marking required; identical clamping behavior for positive or negative transients across either terminal. |
| Case (cathode side) | Thermal path & mechanical anchor | Exposed metal pad provides primary thermal conduction path to PCB copper; requires ≥20 mm² 2-oz copper pour for RthJA compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| 40 kW surge capability (8/20 μs) | Supports IEC 61000-4-5 Level 4 line-to-line surge immunity testing without external series impedance. |
| 30 kV ESD immunity (IEC 61000-4-2) | Eliminates need for additional ESD protection on board-level interfaces exposed to handling or contact discharge. |
| Halogen-free, RoHS-compliant, MSL Level 1 | Permits lead-free reflow at 260 °C peak without moisture-related popcorning; compliant with automotive material restrictions. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protection of 24 V supply rails feeding body control modules against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt TVS device clamping voltage spikes to safe levels within nanoseconds, preserving downstream DC-DC converters and microcontrollers. Use Value: Withstands 5000 W pulses and maintains clamping at ≤35.5 V, preventing latch-up or overvoltage damage during ISO 7637-2 Pulse 5a events. |
Use Scenario: Guarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing induced surges from nearby motor drives or relay switching on shared chassis ground. Use Value: Low 35.5 V clamping voltage ensures sensor output stays within ADC input range, avoiding saturation or data corruption during 1 kV/500 A transients. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding -48 V telecom rectifier outputs against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed at power entry point to divert surge energy to ground before reaching DC/DC isolation stages. Use Value: 40 kW (8/20 μs) rating matches IEC 61000-4-5 severity Level 4, enabling single-stage protection without series impedance or cascaded devices. |
Use Scenario: Protecting gate drivers and bootstrap circuits in BLDC motor inverters inside washing machines and HVAC systems. IC Role / Device Role / Timing Role: Clamp inductive kickback from freewheeling diodes and parasitic inductance in high-side switch node routing. Use Value: 175 °C TJ max and AEC-Q101 qualification ensure reliability under repeated thermal cycling and high ambient temperatures near motors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-M3/84A | Unidirectional; lower PPPM = 400 W; SMA package (smaller footprint, higher RthJA). | Requires polarity-aware layout; suitable only for DC-biased lines where reverse conduction is blocked. | Select when space-constrained and unidirectional protection suffices; not drop-in for bidirectional AC or floating nodes. |
| SMCJ22CA-M3/84A | Same SMC package and bidirectional function; higher PPPM = 1500 W; lower VC = 35.0 V at 43.3 A. | Limited to lower-energy transients; insufficient for ISO 7637-2 Pulse 5 or IEC 61000-4-5 Level 4. | Use where cost sensitivity outweighs surge margin; verify clamping headroom with actual system surge profile. |
Compared with SMC5K22CA-M3/H, SMAJ22A-M3/84A offers smaller size but lacks bidirectionality and 5 kW surge capacity, while SMCJ22CA-M3/84A shares the same package and polarity but cannot handle automotive load-dump or telecom lightning surges due to its 1.5 kW rating.
Availability
SMC5K22CA-M3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for SMC5K22CA-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, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The SMC5K22CA-M3/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive under-hood, industrial automation, and infrastructure power systems.
FAQ
What is the breakdown voltage range of the SMC5K22CA-M3/H?
The SMC5K22CA-M3/H has a specified breakdown voltage (VBR) range of 24.4 V to 26.9 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures predictable clamping onset across temperature and production lots, critical for protecting 24 V systems where margin above nominal rail must be precisely controlled. The SMC5K22CA-M3/H maintains this specification across its full operating junction temperature range of –55 °C to +175 °C.
Is the SMC5K22CA-M3/H suitable for automotive applications?
Yes, the SMC5K22CA-M3/H is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. It meets stringent requirements for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (30 kV per IEC 61000-4-2). Its 175 °C maximum junction temperature and robust SMC package make the SMC5K22CA-M3/H appropriate for protecting ECUs, body control modules, and power distribution units subject to ISO 7637-2 load-dump transients.
What does the "-M3/H" suffix indicate in SMC5K22CA-M3/H?
The "-M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance, while "/H" specifies packaging in 7-inch plastic tape-and-reel format with 850 units per reel. This configuration ensures compatibility with high-volume SMT assembly lines and satisfies automotive material compliance requirements. The SMC5K22CA-M3/H is not the AEC-Q101-qualified HM3 variant-its qualification status derives from the base SMC5K22CA-HM3 part number family.
How does the clamping voltage of SMC5K22CA-M3/H compare to its stand-off voltage?
The SMC5K22CA-M3/H has a stand-off voltage (VWM) of 22 V and a maximum clamping voltage (VC) of 35.5 V at 141 A peak pulse current (10/1000 μs). This 13.5 V differential represents the voltage "headroom" the device allows during surge events-critical for ensuring downstream components remain within absolute maximum ratings. The ratio VC/VWM ≈ 1.61 reflects optimized avalanche dynamics for fast, low-resistance clamping without excessive overshoot.
Can SMC5K22CA-M3/H replace older SMCJ-series TVS diodes in existing designs?
No, the SMC5K22CA-M3/H is not a direct replacement for SMCJ22CA due to significantly higher surge capability (5000 W vs. 1500 W) and different thermal and electrical derating curves. While both share the SMC package and bidirectional function, substituting the SMC5K22CA-M3/H may require layout review to confirm adequate PCB copper area for thermal dissipation and verify that downstream circuitry can tolerate the slightly higher clamping voltage (35.5 V vs. 35.0 V). The SMC5K22CA-M3/H delivers enhanced protection margin but is not a drop-in upgrade.
SMC5K22CA-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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 141A
- 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)
SMC5K22CA-M3/H FAQ
1.How can I place an order for SMC5K22CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K22CA-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 SMC5K22CA-M3/H reliable?
The price and inventory of SMC5K22CA-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 SMC5K22CA-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K22CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K22CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K22CA-M3/H?
SMC5K22CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K22CA-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 SMC5K22CA-M3/H?
For technical support, including SMC5K22CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K22CA-M3/H requirements.
6.How does Aetrix verify that SMC5K22CA-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K22CA-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 SMC5K22CA-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K22CA-M3/H?
All SMC5K22CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K22CA-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 SMC5K22CA-M3/H part is unused and in its original packaging.
Return procedure for SMC5K22CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K22CA-M3/H Tags
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