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Vishay General Semiconductor - Diodes Division SMP22A-M3/84A
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- Part No.:
- SMP22A-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP22A-M3/84A.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,266
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Product details
Overview
SMP22A-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the eSMP® Series, designed for clamping voltage transients on power and signal lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 11.3 A peak pulse current (IPPM), and clamps to ≤35.5 V at rated surge. It protects MOSFETs and ICs in industrial power supplies and sensor interfaces.
For engineers reviewing the SMP22A-M3/84A datasheet, SMP22A-M3/84A pinout, SMP22A-M3/84A application, or SMP22A-M3/84A equivalent, key selection criteria include unidirectional polarity, DO-220AA package compatibility, 1.0 mm profile for space-constrained PCBs, MSL Level 1 rating, and verified clamping performance under 10/1000 μs surge conditions.
Technical Context
This TVS diode operates as a fast-acting shunt protector that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its low incremental surge resistance and 2.5 V forward voltage at 25 A ensure minimal power loss during clamping events.
The device is optimized for transient suppression per IEC 61000-4-2/4-4/4-5 standards, with thermal resistance of 50 °C/W (junction-to-lead) and 250 °C/W (junction-to-ambient), enabling reliable operation up to 150 °C junction temperature in compact layouts with 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 24.4 V / 26.9 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | ≤35.5 V - Clamped voltage during full 11.3 A surge, limiting stress on downstream components |
| PPPM | 400 W - Peak pulse power handling capability with 10/1000 μs waveform, critical for lightning/surge immunity |
| IFSM | 40 A - Non-repetitive forward surge rating, supporting high-energy transient absorption |
| TJ max | +150 °C - Maximum junction temperature, enabling use in thermally demanding industrial environments |
| RθJL | 50 °C/W - Low thermal resistance to lead, facilitating heat dissipation through PCB copper |
Pinout & Package
Package: SMP (DO-220AA), ultra-low-profile surface-mount case with matte tin-plated leads, halogen-free, RoHS-compliant, and MSL Level 1 rated. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or lower-potential rail in unidirectional TVS configuration | Provides low-impedance path to ground during reverse overvoltage events; polarity marked by cathode band |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., VCC or signal) | Defines directionality - clamps only when cathode voltage exceeds anode by ≥VBR; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.0 mm height) | Enables integration into ultra-thin consumer and portable electronics without compromising board stacking height |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 3 surge immunity requirements for industrial equipment power inputs |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive 3.3 V/5 V logic |
| Halogen-free, RoHS-compliant, JESD201 Class 2 whisker resistant | Ensures long-term reliability in automotive and industrial applications with strict material compliance mandates |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay and solenoid switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU GPIO and external load interface to clamp negative transients to safe levels. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic inputs while maintaining signal integrity during 40 A inductive turn-off events. | Use Scenario: Surge suppression on LIN bus lines and power supply rails in door module ECUs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 100 V/50 ms load dump pulses without degradation. Use Value: Enables compliance with ISO 7637-2 Pulse 5a while sustaining 150 °C ambient operation in enclosed modules. |
| Smart Energy Meters | Industrial PLC Digital Input Cards |
Use Scenario: Protection of isolated RS-485 transceivers and metering SoCs against ESD and fast transients induced by nearby switching events. IC Role / Device Role / Timing Role: Fast-response shunt suppressor on communication line pairs, placed adjacent to connector entry points. Use Value: Limits clamped voltage to ≤35.5 V, preserving signal margin for 3.3 V transceivers and avoiding false triggering of fault detection circuits. | Use Scenario: Input protection for 24 V DC digital input channels subjected to field wiring surges and accidental AC mains contact. IC Role / Device Role / Timing Role: Primary front-end TVS on each channel, sized to handle 400 W surges without failure or parameter shift. Use Value: Extends mean time between failures (MTBF) by eliminating input-stage diode burnout in harsh factory 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 |
|---|---|---|---|
| SMP22A-M3/85A | Same electrical specs; differs only in packaging - supplied in 13" tape-and-reel (10,000 pcs) vs. 7" reel (3,000 pcs) | No functional difference; intended for high-volume automated assembly lines requiring larger reels | Select based on production volume and SMT line feeder compatibility, not circuit design |
| SMAJ22A-E3/5A | Same VWM (22 V), but higher VC (35.7 V), lower PPPM (400 W same), DO-214AC package (larger, 2.3 mm height) | Less suitable for ultra-thin designs; requires more PCB area and has higher thermal resistance (RθJA = 40°C/W higher) | Use only if DO-220AA footprint is unavailable or legacy layout constraints prevent miniaturization |
Compared with SMP22A-M3/84A, the /85A variant offers identical protection performance with scaled packaging logistics, while SMAJ22A-E3/5A trades compactness and thermal efficiency for broader industry familiarity and alternate mounting options - making SMP22A-M3/84A optimal for next-gen space- and thermal-sensitive designs.
Availability
SMP22A-M3/84A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart energy meters, and PLC digital input cards requiring stable component supply across extended production lifecycles.
Supply support for SMP22A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and application-specific optimization.
The eSMP® Series, including SMP22A-M3/84A, was engineered to deliver high-surge robustness in the smallest possible surface-mount footprint for modern power and signal line protection in space-constrained industrial and automotive systems.
FAQ
What is the maximum clamping voltage of SMP22A-M3/84A under rated surge conditions?
The SMP22A-M3/84A clamps to a maximum of 35.5 V when subjected to its rated 11.3 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured at the device terminals under standardized test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and defines the upper voltage limit imposed on protected circuitry during transient events. Exceeding this clamping voltage risks damage to downstream 3.3 V or 5 V components.
Is SMP22A-M3/84A suitable for bidirectional transient protection?
No, SMP22A-M3/84A is a unidirectional TVS diode, designed only for suppression of negative-going transients relative to its cathode. It does not provide symmetrical clamping for both polarities. For bidirectional protection, a dedicated bidirectional part such as SMBJ22CA or a back-to-back configuration would be required. The SMP22A-M3/84A datasheet explicitly specifies "unidirectional" polarity and includes a cathode band marking - confirming its single-direction functionality.
What is the meaning of the "-M3/84A" suffix in SMP22A-M3/84A?
The "-M3" suffix denotes Vishay's halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards and JESD 201 Class 2 whisker resistance. The "/84A" indicates packaging in 7-inch diameter plastic tape-and-reel format containing 3,000 units - a standard configuration for high-speed SMT placement. Both elements are integral to the full SMP22A-M3/84A orderable part number.
Can SMP22A-M3/84A be used in automotive applications requiring AEC-Q200 qualification?
No, SMP22A-M3/84A is not AEC-Q200 qualified. While it meets industrial temperature range (–55 °C to +150 °C) and MSL Level 1 reflow requirements, Vishay does not list this specific variant under its AEC-Q200-qualified portfolio. For automotive-critical applications, engineers must select explicitly AEC-Q200-certified alternatives such as the Automotive Grade SMAJ22AHE3/5A or consult Vishay's qualified product lists - SMP22A-M3/84A remains appropriate for non-safety-critical industrial and consumer systems.
What is the thermal resistance from junction to ambient (RθJA) for SMP22A-M3/84A?
The typical thermal resistance from junction to ambient (RθJA) for SMP22A-M3/84A is 250 °C/W, measured under standard JEDEC test conditions (single device on FR-4 board with 1 oz copper, no extra heatsinking). This value assumes the recommended 5.0 mm × 5.0 mm copper pad per terminal. Effective thermal management requires adherence to this layout - reducing pad size or using thinner copper will increase RθJA and risk exceeding the 150 °C maximum junction temperature during repeated surge events.
SMP22A-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:
- 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):
- 11.3A
- 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)
SMP22A-M3/84A FAQ
1.How can I place an order for SMP22A-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP22A-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 SMP22A-M3/84A reliable?
The price and inventory of SMP22A-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 SMP22A-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP22A-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP22A-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP22A-M3/84A?
SMP22A-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP22A-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 SMP22A-M3/84A?
For technical support, including SMP22A-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP22A-M3/84A requirements.
6.How does Aetrix verify that SMP22A-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP22A-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 SMP22A-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP22A-M3/84A?
All SMP22A-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP22A-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 SMP22A-M3/84A part is unused and in its original packaging.
Return procedure for SMP22A-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP22A-M3/84A Tags
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