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Vishay General Semiconductor - Diodes Division SMP26A-M3/84A
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- Part No.:
- SMP26A-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP26A-M3/84A.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:603
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Product details
Overview
SMP26A-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMP (DO-220AA) package, rated for 400 W peak pulse power (10/1000 μs), 26 V stand-off voltage, and 42.1 V maximum clamping voltage at 9.5 A peak pulse current. It protects sensitive ICs and MOSFETs against inductive switching transients in industrial and telecom power rails.
For engineers reviewing the SMP26A-M3/84A datasheet, SMP26A-M3/84A pinout, SMP26A-M3/84A application, or SMP26A-M3/84A equivalent, key selection criteria include clamping voltage (VC = 42.1 V), breakdown voltage range (28.9–31.9 V), unidirectional polarity, MSL Level 1 rating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SMP26A-M3/84A operates as a unidirectional avalanche diode with a specified breakdown voltage of 28.9–31.9 V at 1.0 mA test current and clamps transients to ≤42.1 V at 9.5 A (10/1000 μs waveform). Its low incremental surge resistance and fast response time enable effective suppression of ESD and load-switching spikes.
Thermally, it features a junction-to-lead thermal resistance of 50 °C/W and supports operation from –55 °C to +150 °C. The device meets JESD 201 Class 2 whisker testing and is halogen-free, RoHS-compliant, and rated for reflow up to 260 °C peak per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum reverse stand-off voltage before conduction begins; defines safe operating window for protected circuit |
| VBR min/max | 28.9 V / 31.9 V - breakdown voltage range at 1.0 mA; ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 42.1 V - clamping voltage at 9.5 A peak pulse; determines worst-case overvoltage seen by downstream components |
| PPPM | 400 W - peak pulse power handling (10/1000 μs); validates robustness against common surge waveforms |
| IFSM | 40 A - non-repetitive forward surge current (10 ms half-sine); supports high-energy transient events without failure |
| TJ max | +150 °C - maximum junction temperature; enables use in high-ambient industrial environments |
Pinout & Package
Package: SMP (DO-220AA), ultra-low-profile surface-mount case with 1.0 mm typical height, matte tin-plated leads, cathode indicated by color band, and UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected line (e.g., VIN or signal rail); conducts surge current toward ground path |
| Cathode | Current exit terminal during clamping | Connected to system ground; polarity marking (band) prevents reverse installation in unidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power | 400 W (10/1000 μs) - sustains high-energy transients without degradation in compact SMT footprint |
| Clamping performance | VC = 42.1 V at 9.5 A - limits overvoltage to safe margin below IC absolute maximum ratings |
| Thermal reliability | RθJL = 50 °C/W - enables efficient heat transfer to PCB copper, supporting continuous operation near TJ limit |
| Manufacturing compliance | MSL Level 1, JESD 201 Class 2, RoHS/halogen-free - eliminates moisture sensitivity concerns and whisker risk in automated assembly |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and controller ICs from flyback voltage spikes generated by relay or solenoid switching in PLC modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or control line to clamp inductive kick to ≤42.1 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces exposed to >100 V transients. | Use Scenario: Input-stage surge protection on 48 V telecom rectifier outputs feeding base station backplane regulators. IC Role / Device Role / Timing Role: Primary transient suppressor on secondary-side DC distribution rail upstream of POL converters. Use Value: Maintains system uptime by absorbing 400 W surges without failure, meeting GR-1089-CORE Level 3 requirements. |
| Automotive Body Control Modules | Consumer IoT Sensor Hubs |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and ISO 7637-2 Pulse 1/2a transients. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V supply rail feeding BCM sub-circuits. Use Value: Withstands 40 A surge current (IFSM) and clamps to 42.1 V, preserving CAN/LIN signal integrity during battery disconnection events. | Use Scenario: ESD and EFT protection on analog sensor inputs (e.g., temperature, humidity) in smart home hubs operating from USB-C PD sources. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional suppressor on 3.3 V sensor interface lines. Use Value: Fast response and low leakage (<1 μA at 26 V) prevent signal distortion while enabling ±8 kV contact ESD immunity per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP26A-M3/85A | Same electrical specs; differs only in packaging - 10,000-piece 13" tape-and-reel vs. 3,000-piece 7" reel | No functional difference; suited for high-volume production runs requiring larger reels | Select based on procurement volume and SMT line feeder compatibility |
| SMAJ26A-E3/5A | Higher RθJA (350 °C/W vs. 250 °C/W); same VWM/VC, but lower IPPM (8.7 A vs. 9.5 A) and PPPM (400 W) | Less effective thermal dissipation in dense layouts; requires larger copper area for equivalent derating | Prefer SMP26A-M3/84A where board space is constrained and thermal performance is critical |
Compared with SMAJ26A-E3/5A and SMP26A-M3/85A, the SMP26A-M3/84A offers identical clamping and surge capability in a lower-profile DO-220AA package with superior thermal resistance (RθJL = 50 °C/W), making it optimal for space-constrained, high-reliability industrial designs requiring consistent 400 W pulse handling.
Availability
SMP26A-M3/84A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and consumer IoT sensor hubs requiring stable component supply and guaranteed long-term availability.
Supply support for SMP26A-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 transient protection devices with emphasis on reliability, precision, and high-power density.
The SMP series was developed to deliver high-peak-power TVS performance in ultra-low-profile surface-mount packages for next-generation power management and interface protection in space-constrained systems.
FAQ
What is the clamping voltage of the SMP26A-M3/84A under standard surge conditions?
The SMP26A-M3/84A has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current of 9.5 A using the industry-standard 10/1000 μs waveform. This value is measured at TA = 25 °C with the device mounted on 5.0 mm × 5.0 mm copper pads per terminal, and it defines the upper voltage limit imposed on protected circuits during transient events. The SMP26A-M3/84A maintains this clamping performance across its full operating temperature range.
Is the SMP26A-M3/84A suitable for automotive applications requiring AEC-Q200 qualification?
No, the SMP26A-M3/84A is not AEC-Q200 qualified. It is an industrial-grade device rated for operation from –55 °C to +150 °C and compliant with JESD 201 Class 2 whisker testing, but it does not undergo the stress test sequence required for AEC-Q200. For automotive body control or infotainment systems, designers should verify qualification status separately or select Vishay's AEC-Q200-certified TVS portfolio. The SMP26A-M3/84A remains appropriate for non-automotive industrial and telecom applications.
What is the meaning of the "-M3/84A" suffix in SMP26A-M3/84A?
The "-M3" suffix indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards and pass JESD 201 Class 2 whisker testing. The "/84A" denotes the preferred packaging: 7-inch diameter plastic tape-and-reel containing 3,000 units, optimized for high-speed SMT placement. This full designation uniquely identifies the SMP26A-M3/84A as a specific manufacturing and packaging variant of the SMP26A base device.
How does the thermal performance of SMP26A-M3/84A compare to SMA package TVS diodes?
The SMP26A-M3/84A (DO-220AA) offers significantly better thermal resistance than legacy SMA (DO-214AC) packages: its typical junction-to-lead resistance (RθJL) is 50 °C/W versus ~70–80 °C/W for SMA variants. This allows more efficient heat transfer to the PCB, supporting higher sustained power dissipation in compact layouts. While RθJA remains dependent on board layout, the SMP26A-M3/84A's lower profile and optimized leadframe enhance thermal coupling - a key advantage over SMA in thermally demanding applications.
Can SMP26A-M3/84A be used in bidirectional configurations?
No, the SMP26A-M3/84A is strictly unidirectional, as confirmed by its polarity marking (cathode band), electrical specifications (VBR defined only for reverse bias), and absence of symmetrical breakdown data. Bidirectional protection requires either a dedicated bidirectional TVS (e.g., SMBJ26CA) or a back-to-back pair of unidirectional devices. Using SMP26A-M3/84A in reverse-biased mode beyond its specified VWM risks premature conduction or failure. Always observe polarity during PCB layout for the SMP26A-M3/84A.
SMP26A-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- 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)
SMP26A-M3/84A FAQ
1.How can I place an order for SMP26A-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP26A-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 SMP26A-M3/84A reliable?
The price and inventory of SMP26A-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 SMP26A-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP26A-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP26A-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP26A-M3/84A?
SMP26A-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP26A-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 SMP26A-M3/84A?
For technical support, including SMP26A-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP26A-M3/84A requirements.
6.How does Aetrix verify that SMP26A-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP26A-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 SMP26A-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP26A-M3/84A?
All SMP26A-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP26A-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 SMP26A-M3/84A part is unused and in its original packaging.
Return procedure for SMP26A-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP26A-M3/84A Tags
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