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Vishay General Semiconductor - Diodes Division SMC5K22A-M3/H
- Part No.:
- SMC5K22A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K22A-M3/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMC5K22A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed to protect sensitive electronics against 5000 W (10/1000 μs) transients. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown range (VBR), and clamps to ≤35.5 V at 141 A peak pulse current - deployed on power rails and signal lines of industrial motor drives and sensor interfaces.
For engineers reviewing the SMC5K22A-M3/H datasheet, SMC5K22A-M3/H pinout, SMC5K22A-M3/H application, or SMC5K22A-M3/H equivalent, key selection criteria include its 150 °C max junction temperature, 1.0 μA reverse leakage at VWM, AEC-Q101 qualification status (not applicable to this variant), UL 497B recognition, and MSL Level 1 moisture sensitivity rating for reflow compatibility.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its breakdown threshold. Its low incremental surge resistance and fast response time ensure effective suppression of inductive switching spikes and lightning-induced surges without affecting normal operation under 22 V DC bias.
The SMC5K22A-M3/H delivers 5000 W peak pulse power (10/1000 μs) and 40 kW (8/20 μs), with thermal resistance RthJA = 90 °C/W and RthJM = 4.0 °C/W. It meets IEC 61000-4-2 ESD immunity up to ±30 kV (contact/air), and is halogen-free, RoHS-compliant, and rated for -55 °C to +150 °C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 24.4–26.9 V at 1.0 mA - precise voltage range where avalanche conduction initiates; ensures predictable turn-on behavior |
| VC (Clamping Voltage) | ≤35.5 V at 141 A (10/1000 μs) - maximum voltage seen by protected circuit during worst-case transient; critical for IC-level survivability |
| PPPM (Peak Pulse Power) | 5000 W (10/1000 μs) - energy-handling capability for standard surge waveforms; validates robustness in industrial environments |
| IR (Reverse Leakage) | ≤1.0 μA at 22 V - negligible standby current; avoids power loss or false triggering in low-power systems |
| TJ max | +150 °C - maximum junction temperature; supports high-ambient deployments such as enclosed motor controllers |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 3.20 mm × 7.11 mm footprint; compatible with automated assembly |
Pinout & Package
SMC5K22A-M3/H uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, cathode indicated by a color band. Terminals are solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; grounded or connected to lower-potential rail | Provides reference node for clamping action; must be routed with low-inductance path to ground plane |
| Cathode | Current exit point during reverse-biased transient suppression; connects to protected line | Carries full surge current during clamping; requires direct connection to IC power/signal input with minimal trace length |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables protection against severe inductive load switching events in industrial PLC I/O modules without derating |
| Clamping voltage ≤35.5 V at 141 A | Ensures downstream 3.3 V/5 V logic and MOSFET gate drivers remain within absolute maximum ratings during surge |
| 1.0 μA max reverse leakage at VWM | Prevents measurable quiescent current draw in battery-backed or ultra-low-power sensor nodes |
| UL 497B recognized (E136766) | Validates compliance for telecom and industrial equipment safety certification without additional system-level testing |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without preconditioning or dry-pack requirements |
Applications
| Industrial Motor Drive Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting gate driver ICs and microcontroller I/O pins from back-EMF spikes generated by brushed DC motor commutation in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor that clamps voltage excursions above 22 V to ≤35.5 V within nanoseconds. Use Value: Prevents latch-up and permanent damage to 3.3 V MCU GPIOs and half-bridge drivers exposed to repetitive 100–500 V inductive transients. |
Use Scenario: Safeguarding LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine bay modules subject to ISO 7637-2 pulse 1/2a/5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under 10/1000 μs surges up to 5000 W while adding <1 pF capacitance - no data rate degradation on 20 kbps LIN lines. |
| Telecom Power Supply Input Protection | Computer Peripheral USB Port Protection |
Use Scenario: Front-end protection of 24 V DC input rails in PoE-powered network switches and base station power supplies. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input stage, coordinated with upstream fuses and MOVs. Use Value: Absorbs 40 kW (8/20 μs) lightning-induced surges per IEC 61000-4-5 Level 4, limiting voltage rise to <40 V across primary-side controller ICs. |
Use Scenario: Reverse polarity and ESD protection on 5 V VBUS lines of USB 2.0 host ports in embedded PCs and kiosks. IC Role / Device Role / Timing Role: Standalone unidirectional suppressor replacing dual-diode arrays where cost and board space are constrained. Use Value: Delivers ±30 kV IEC 61000-4-2 contact discharge immunity while maintaining <1 μA leakage - avoids false disconnect detection during hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-M3/84A | Lower PPPM (600 W vs. 5000 W); SMB package (smaller footprint, higher RthJA = 110 °C/W) | Suitable for low-energy ESD-only scenarios; insufficient for industrial 10/1000 μs surge requirements | Select only if system-level surge testing confirms <1 kW threat level and space constraints prohibit SMC placement |
| SMCJ22A-M3/H | Same SMC package and VWM/VBR specs; higher PPPM (1500 W) but lower than SMC5K22A-M3/H's 5000 W | Meets basic IEC 61000-4-4/5 Level 3; not rated for Level 4 lightning surges requiring ≥5 kW handling | Choose when cost sensitivity outweighs need for highest surge margin, and thermal design accommodates reduced power rating |
Compared with SMBJ22A-M3/84A and SMCJ22A-M3/H, the SMC5K22A-M3/H provides 8.3× and 3.3× higher peak pulse power respectively - enabling single-device compliance with IEC 61000-4-5 Level 4 in compact SMC form factor without parallel stacking or thermal derating penalties.
Availability
SMC5K22A-M3/H is available at Aetrix Electronics and suitable for industrial motor control, telecom power supply input protection, and automotive sensor interface applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SMC5K22A-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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMC5K22A-M3/H belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh industrial and infrastructure environments where failure is not an option.
FAQ
What is the maximum clamping voltage of the SMC5K22A-M3/H at its rated peak pulse current?
The SMC5K22A-M3/H has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated 10/1000 μs peak pulse current of 141 A. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and guarantees the protected circuit will not experience voltages exceeding this threshold during specified surge events. The SMC5K22A-M3/H maintains this clamping performance across its full operating temperature range.
Is the SMC5K22A-M3/H AEC-Q101 qualified?
No, the SMC5K22A-M3/H is not AEC-Q101 qualified. According to Vishay's documentation, AEC-Q101 qualification applies only to the SMC5K10A through SMC5K20A variants with HM3 suffix (e.g., SMC5K20AHM3_A/H). The SMC5K22A-M3/H is designated for industrial-grade applications and carries the M3 suffix indicating halogen-free, RoHS-compliant construction without automotive qualification.
What does the "/H" suffix mean in SMC5K22A-M3/H?
The "/H" suffix in SMC5K22A-M3/H denotes the preferred packaging configuration: 7-inch diameter plastic tape and reel containing 850 units. This format is optimized for high-volume SMT assembly and is distinct from the "/I" variant (13-inch reel, 3500 units). The "/H" designation does not affect electrical or thermal specifications - it solely identifies the delivery mode and quantity per reel.
Can the SMC5K22A-M3/H replace the SMCJ22A-M3/H in an existing design?
The SMC5K22A-M3/H can physically replace the SMCJ22A-M3/H due to identical SMC (DO-214AB) package and matching VWM/VBR specifications, but it delivers 3.3× higher peak pulse power (5000 W vs. 1500 W). This upgrade improves surge margin without layout changes - however, thermal validation is recommended since higher energy absorption may increase localized heating under repeated transients.
What is the reverse leakage current specification for the SMC5K22A-M3/H at 22 V?
The SMC5K22A-M3/H specifies a maximum reverse leakage current (IR) of 1.0 μA at its 22 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on power budget in always-on systems and prevents false triggering in high-impedance sensing circuits. The SMC5K22A-M3/H maintains leakage below 5 μA even at 125 °C junction temperature per characterization data.
SMC5K22A-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:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K22A-M3/H FAQ
1.How can I place an order for SMC5K22A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K22A-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 SMC5K22A-M3/H reliable?
The price and inventory of SMC5K22A-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 SMC5K22A-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K22A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K22A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K22A-M3/H?
SMC5K22A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K22A-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 SMC5K22A-M3/H?
For technical support, including SMC5K22A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K22A-M3/H requirements.
6.How does Aetrix verify that SMC5K22A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K22A-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 SMC5K22A-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K22A-M3/H?
All SMC5K22A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K22A-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 SMC5K22A-M3/H part is unused and in its original packaging.
Return procedure for SMC5K22A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K22A-M3/H Tags
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