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Vishay General Semiconductor - Diodes Division SMP26-M3/84A
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- Part No.:
- SMP26-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP26-M3/84A.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,682
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Product details
Overview
SMP26-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) in DO-220AA (SMP) package, designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 9.5 A peak pulse current (IPPM), and clamps to ≤42.1 V at rated surge.
For engineers reviewing the SMP26-M3/84A datasheet, SMP26-M3/84A pinout, SMP26-M3/84A application, or SMP26-M3/84A equivalent, this page delivers verified electrical specs, thermal resistance (RθJA = 250 °C/W), JEDEC MSL Level 1 compliance, halogen-free RoHS-compliant construction, and real-world protection use cases for industrial sensor interfaces and MOSFET gate drivers.
Technical Context
The SMP26-M3/84A operates as a unidirectional avalanche diode with fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD and inductive kickback in DC power paths. Its 26 V stand-off rating allows integration on 24 V systems without leakage concerns, while maintaining robust clamping at 42.1 V under 10/1000 μs surge conditions.
Thermally, it uses a DO-220AA package with RθJL = 50 °C/W and RθJA = 250 °C/W, requiring minimum 5.0 mm × 5.0 mm copper pads per terminal for full 400 W derating. The matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 1A whisker requirements, supporting automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before significant leakage; suitable for 24 V nominal rail protection |
| VBR min/max | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on margin above VWM |
| VC @ IPPM | ≤42.1 V - Clamped voltage during 9.5 A 10/1000 μs surge; defines maximum stress imposed on protected IC or MOSFET |
| PPPM | 400 W - Peak pulse power handling capability with standard 10/1000 μs waveform; validates surge energy absorption |
| IFSM | 40 A - Non-repetitive forward surge current rating (10 ms half-sine); supports brief fault-current events |
| TJ max | +150 °C - Maximum junction temperature; enables operation in high-ambient industrial environments |
| RθJA | 250 °C/W - Junction-to-ambient thermal resistance on standard PCB layout; informs thermal design margin for sustained pulses |
Pinout & Package
Package: DO-220AA (SMP), ultra-low-profile surface-mount case with 1.0 mm typical height, cathode indicated by color band, halogen-free and RoHS-compliant molding compound (UL 94 V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path during surge | Connected to lower-potential side (e.g., GND or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24 V rail or signal input); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables reliable suppression of IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 24 V lines without derating |
| Very low profile (1.0 mm height) | Supports ultra-thin PCB designs and tight board stacking in space-constrained industrial modules |
| MSL Level 1 (260 °C peak) | Allows single-reflow assembly without moisture sensitivity concerns or baking requirements |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| Matte tin plating (J-STD-002 compliant) | Ensures consistent solder wetting and joint reliability across automated reflow profiles |
Applications
| Industrial Sensor Interface Protection | 24 V DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA transmitters) and digital I/O pins of PLC modules from field-wiring induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, absorbing fast-rising surges before they reach precision ADC or microcontroller inputs. Use Value: Prevents latch-up or permanent damage to sensitive analog front-ends while maintaining <1 μA leakage at 26 V operating voltage. |
Use Scenario: Safeguarding 24 V supply inputs to motor drivers, solenoid controllers, and industrial HMIs against inductive load switching spikes. IC Role / Device Role / Timing Role: Parallel-connected clamping device across input capacitor, limiting voltage excursions to ≤42.1 V during 9.5 A surge events. Use Value: Maintains system uptime by preventing overvoltage shutdown or MOSFET avalanche failure in 24 V power distribution networks. |
| MOSFET Gate Driver Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding high-side N-channel MOSFET gate drive signals from Miller-induced voltage overshoot and cross-talk in half-bridge inverters. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed between gate and source, responding in <1 ns to clamp sub-10 ns transients. Use Value: Avoids unintended turn-on or gate oxide breakdown without adding propagation delay or loading to high-speed PWM paths. |
Use Scenario: Front-end protection on Ethernet PHY power rails and auxiliary control lines in telecom base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary unidirectional clamping element on +24 V bias rails feeding PoE controllers and management ICs. Use Value: Meets GR-1089-CORE Level 3 surge immunity requirements while occupying minimal board area due to DO-220AA footprint. |
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 | Identical electrical specs; differs only in packaging - 13" tape-and-reel (10,000 pcs) vs. 7" reel (3,000 pcs) for SMP26-M3/84A | No functional difference; selected for volume procurement or logistics compatibility | Choose SMP26-M3/84A for prototyping or low-volume production; SMP26A-M3/85A for high-volume SMT line optimization |
| SMBJ26A | DO-214AA package (larger footprint), higher RθJA (300 °C/W), same VWM/VBR/VC ratings but 600 W PPPM rating | Requires larger PCB pad area and offers higher surge margin; less suitable for ultra-thin or dense layouts | Select SMBJ26A only when 600 W surge headroom is required and board space permits larger package |
Compared with SMP26-M3/84A, SMP26A-M3/85A provides identical protection performance in a higher-volume tape format, while SMBJ26A trades compactness for greater surge power and thermal mass - making SMP26-M3/84A optimal for space-constrained 24 V industrial electronics where MSL Level 1 and 1.0 mm height are critical.
Availability
SMP26-M3/84A is available at Aetrix Electronics and suitable for industrial sensor interfaces, 24 V DC power rail clamping, and MOSFET gate driver protection requiring stable component supply, consistent halogen-free RoHS compliance, and JEDEC-compliant reflow support.
Supply support for SMP26-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, TVS devices, and optoelectronics with emphasis on reliability, ruggedness, and application-specific performance.
The SMP series was developed for high-density, low-profile transient suppression in modern industrial and telecom equipment, prioritizing MSL Level 1 compatibility, automated placement readiness, and precise clamping behavior in compact DO-220AA packaging.
FAQ
What is the standoff voltage rating of the SMP26-M3/84A?
The SMP26-M3/84A has a reverse stand-off voltage (VWM) of 26 V, meaning it remains in high-impedance state below this voltage with leakage current ≤1.0 μA. This rating ensures compatibility with 24 V nominal systems while providing sufficient margin before breakdown at 28.9–31.9 V, as confirmed in Vishay document 88481.
Does the SMP26-M3/84A support lead-free reflow soldering?
Yes, the SMP26-M3/84A is qualified for lead-free reflow with a maximum peak temperature of 260 °C and meets MSL Level 1 per J-STD-020. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, enabling robust solder joints without pre-baking or special process adjustments.
What is the clamping voltage of the SMP26-M3/84A under surge conditions?
The SMP26-M3/84A clamps to a maximum of 42.1 V when subjected to its rated 9.5 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events.
Can the SMP26-M3/84A be used in bidirectional configurations?
No - the SMP26-M3/84A is strictly unidirectional, as indicated by its polarity marking (cathode band) and electrical specifications (VBR defined only for reverse bias). For bidirectional protection, Vishay offers separate dual-diode configurations such as the SMBJ26CA; SMP26-M3/84A must be used with correct anode/cathode orientation.
What is the thermal resistance of the SMP26-M3/84A in standard mounting?
The SMP26-M3/84A exhibits a junction-to-ambient thermal resistance (RθJA) of 250 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal, per Vishay's test condition in document 88481. Its junction-to-lead resistance (RθJL) is 50 °C/W, supporting localized heat transfer to PCB copper in high-pulse-duty applications.
SMP26-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
SMP26-M3/84A FAQ
1.How can I place an order for SMP26-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP26-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 SMP26-M3/84A reliable?
The price and inventory of SMP26-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 SMP26-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP26-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP26-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP26-M3/84A?
SMP26-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP26-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 SMP26-M3/84A?
For technical support, including SMP26-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP26-M3/84A requirements.
6.How does Aetrix verify that SMP26-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP26-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 SMP26-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP26-M3/84A?
All SMP26-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP26-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 SMP26-M3/84A part is unused and in its original packaging.
Return procedure for SMP26-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP26-M3/84A Tags
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