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Vishay General Semiconductor - Diodes Division SMP22-M3/84A
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- Part No.:
- SMP22-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP22-M3/84A.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,182
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Product details
Overview
SMP22-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in DO-220AA (SMP) package, rated for 400 W peak pulse power (10/1000 μs), 22 V standoff voltage (VWM), and clamping at 35.5 V under 11.3 A surge current. It protects MOSFETs and ICs in industrial power supplies against inductive switching transients.
For engineers reviewing the SMP22-M3/84A datasheet, SMP22-M3/84A pinout, SMP22-M3/84A application, or SMP22-M3/84A equivalent, key selection criteria include unidirectional polarity, 1.0 mm profile for space-constrained PCBs, MSL Level 1 rating, halogen-free RoHS-compliant construction, and 150 °C max junction temperature.
Technical Context
This device operates as a silicon avalanche diode with precise breakdown voltage range of 24.4 V to 26.9 V at 1 mA test current, enabling reliable overvoltage clamping before downstream circuit damage occurs. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients induced by relay switching or motor commutation.
The SMP22-M3/84A is thermally optimized with 50 °C/W junction-to-lead thermal resistance and mounted on 5.0 mm × 5.0 mm copper pads per terminal. It meets JESD201 Class 1A whisker resistance and J-STD-020 MSL Level 1 reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum reverse operating voltage before conduction begins; defines safe signal line operating margin |
| VBR min/max | 24.4 V / 26.9 V - guaranteed avalanche breakdown range at 1 mA; ensures consistent clamping threshold across production lots |
| VC @ IPPM | 35.5 V - clamped voltage at 11.3 A peak pulse current; determines maximum stress imposed on protected ICs |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; quantifies transient energy absorption capability |
| IFSM | 40 A - non-repetitive forward surge current rating (10 ms half-sine); supports high-energy fault events without failure |
| TJ max | +150 °C - maximum junction temperature; enables operation in high-ambient industrial environments |
| RθJL | 50 °C/W - junction-to-lead thermal resistance; informs heatsinking requirements when used in high-duty-cycle applications |
Pinout & Package
DO-220AA (SMP) package: ultra-low-profile surface-mount case with cathode band marking; dimensions 3.61 mm × 2.18 mm × 1.0 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction or transient clamping | Connected to lower-potential side of protected circuit; must be routed with low-inductance path to ground reference |
| Cathode | Current exit during reverse-biased clamping | Marked with color band; connected to protected line (e.g., VCC rail or signal input); defines clamping polarity |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard PCB layouts |
| 1.0 mm typical height | Allows placement beneath low-clearance shields or in stacked-board assemblies where Z-axis space is constrained |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture-related popcorning or delamination risks |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets EU Directive 2011/65/EU and JEDEC JS709A; eliminates brominated flame retardants in molding compound |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection fidelity for sensitive logic |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Suppresses flyback voltage spikes from solenoid valves and brushed DC motors in PLC output stages. IC Role / Device Role / Timing Role: Unidirectional TVS placed across inductive load terminals to clamp reverse EMF during switch-off. Use Value: Prevents gate oxide rupture in driving MOSFETs by limiting transient voltage to ≤35.5 V while maintaining 22 V system operating margin. |
Use Scenario: Protects LIN bus transceivers and microcontroller I/O pins from load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail and signal lines to absorb ISO 7637-2 Pulse 1/2a/5a energy. Use Value: Ensures uninterrupted communication during battery disconnection/reconnection events without latch-up or reset. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Shields AC-DC converter secondary-side rectifiers and optocoupler inputs from line-induced surges. IC Role / Device Role / Timing Role: Secondary-side clamping device on isolated 5 V/3.3 V rails feeding digital controllers and sensors. Use Value: Maintains functional safety compliance (IEC 62368-1) by limiting transient propagation into SELV circuits. |
Use Scenario: Guards microcontroller GPIOs and display driver interfaces against ESD and relay bounce in washing machine control units. IC Role / Device Role / Timing Role: Point-of-use TVS on front-panel buttons, encoder lines, and display flex cables. Use Value: Reduces field return rates by eliminating latent latch-up failures caused by repetitive 8 kV contact ESD 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 |
|---|---|---|---|
| SMP22A-M3/84A | Same electrical specs and package; identical marking code BX and VBR range (24.4–26.9 V); differs only in ordering suffix format (no hyphen vs. hyphenated) | No functional difference; both meet same Vishay specification 88481 Rev. 11-Dec-12 | Select SMP22A-M3/84A if legacy BOM references unhyphenated part number; otherwise SMP22-M3/84A is preferred per current Vishay documentation |
| SMCJ22A | DO-214AB package (larger footprint, 2.4 mm height); 400 W rating but higher clamping voltage (35.5 V → 37.5 V) and lower thermal resistance (RθJA = 18 °C/W) | Better thermal performance in high-power continuous surge scenarios; unsuitable for ultra-thin designs due to height constraint | Choose SMCJ22A only when board-level thermal management requires lower RθJA and Z-height >1.0 mm is acceptable |
Compared with SMP22A-M3/84A, the SMP22-M3/84A offers identical protection performance in the same compact DO-220AA footprint; versus SMCJ22A, it trades thermal margin for 60 % lower profile-critical for modern slim-form-factor industrial modules where vertical clearance is limited to <1.1 mm.
Availability
SMP22-M3/84A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and consumer appliance control boards requiring stable component supply and long-term lifecycle continuity.
Supply support for SMP22-M3/84A 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 high-volume manufacturability.
The SMP series was engineered specifically for space-constrained, high-reliability transient suppression in automotive, industrial, and telecom systems-prioritizing low profile, MSL Level 1 compatibility, and tight VBR tolerances.
FAQ
What is the standoff voltage rating of the SMP22-M3/84A?
The SMP22-M3/84A has a reverse standoff voltage (VWM) of 22 V, meaning it remains non-conductive up to this DC or RMS voltage level under normal operation. This value is guaranteed across temperature and ensures compatibility with 24 V nominal industrial control systems while providing sufficient margin before breakdown at 24.4 V minimum.
Does the SMP22-M3/84A meet RoHS and halogen-free requirements?
Yes, the SMP22-M3/84A carries the M3 suffix, confirming full compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709A halogen-free standards. The molding compound contains no brominated flame retardants, and the matte tin-plated leads satisfy J-STD-002 solderability requirements.
What is the maximum clamping voltage for the SMP22-M3/84A during a transient event?
The SMP22-M3/84A clamps to a maximum of 35.5 V when subjected to its rated peak pulse current of 11.3 A (10/1000 μs waveform). This clamping voltage is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during surge conditions.
Can the SMP22-M3/84A be used in automated SMT assembly processes?
Yes, the SMP22-M3/84A is designed for automated placement with its DO-220AA (SMP) package, 1.0 mm typical height, and matte tin-plated leads. It meets MSL Level 1 per J-STD-020 and withstands peak reflow temperatures up to 260 °C, supporting standard lead-free PCB assembly without preconditioning.
What is the thermal resistance from junction to ambient for the SMP22-M3/84A?
The SMP22-M3/84A has a typical junction-to-ambient thermal resistance (RθJA) of 250 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This value assumes standard JEDEC test conditions and informs derating curves for sustained surge duty cycles above 25 °C ambient.
SMP22-M3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- TransZorb®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 39.4V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- Power - Peak Pulse:
- 400W
- 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-220AA (SMP)
SMP22-M3/84A FAQ
1.How can I place an order for SMP22-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP22-M3/84A 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 SMP22-M3/84A reliable?
The price and inventory of SMP22-M3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP22-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP22-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP22-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP22-M3/84A?
SMP22-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP22-M3/84A 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 SMP22-M3/84A?
For technical support, including SMP22-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP22-M3/84A requirements.
6.How does Aetrix verify that SMP22-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP22-M3/84A 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 SMP22-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP22-M3/84A?
All SMP22-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP22-M3/84A, 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 SMP22-M3/84A part is unused and in its original packaging.
Return procedure for SMP22-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP22-M3/84A Tags
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