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Vishay General Semiconductor - Diodes Division SMA5J26A-M3/61
- Part No.:
- SMA5J26A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26A-M3/61.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J26A-M3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown range (VBR), 42.1 V clamping voltage at 11.9 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform). It is widely used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J26A-M3/61 datasheet, SMA5J26A-M3/61 pinout, SMA5J26A-M3/61 application, or SMA5J26A-M3/61 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 80 °C/W), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified breakdown range. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for protecting sensitive downstream components from ESD and inductive switching spikes.
Rated for 150 °C maximum junction temperature and mounted on 5.0 mm × 5.0 mm copper pads, it delivers 500 W surge handling with low incremental surge resistance. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 42.1 V - Clamped voltage at 11.9 A peak pulse current; determines maximum stress imposed on protected circuitry. |
| PPPM | 500 W - Peak pulse power rating for 10/1000 µs waveform; quantifies single-event surge energy absorption capability. |
| IPPM | 11.9 A - Peak pulse current corresponding to VC; used with PCB trace impedance to estimate let-through energy. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs derating requirements above 25 °C ambient. |
| TJ max | 150 °C - Maximum allowable junction temperature; sets upper limit for thermal design and reliability modeling. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to ground or low-impedance return plane; must handle full IPPM without voltage rise. |
| Cathode | Reverse-biased terminal / surge shunt node | Connected to protected line; clamps to VC when transient exceeds VBR; marked with band. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 13.2 V) and lower let-through energy during fast transients. |
| Glass-passivated junction | Ensures stable leakage (<1.0 µA at 26 V), long-term reliability, and immunity to humidity-induced parameter drift. |
| MSL Level 1 (260 °C peak) | Supports standard SMT reflow without preconditioning; eliminates moisture-related popcorning risk. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance mandates for automotive and industrial end equipment without compromising surge robustness. |
| AEC-Q101 qualification path | HM3 variant available; enables drop-in qualification for automotive power electronics requiring stress-tested TVS devices. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN transceiver power input against load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VCC and GND, absorbing >500 W pulses without failure. Use Value: Limits voltage seen by transceiver to ≤42.1 V, preventing latch-up or gate oxide damage during 12 V system transients. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF typical) placed at connector interface to shunt fast transients. Use Value: Sub-1 ns response preserves signal integrity while clamping ±8 kV contact ESD per IEC 61000-4-2 to safe levels. |
| DC-DC Converter Input Stage | MOSFET Gate Driver Protection |
Use Scenario: Safeguarding buck converter input stage against inductive kickback from upstream relays or solenoids. IC Role / Device Role / Timing Role: Primary surge absorber across input capacitor, rated for repetitive 10/1000 µs pulses up to 500 W. Use Value: Prevents overvoltage shutdown or input capacitor rupture by clamping transients before they reach controller IC. |
Use Scenario: Protecting high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Fast-clamping TVS placed between gate and source to clamp dv/dt-induced overshoot. Use Value: Maintains gate-source voltage below absolute maximum rating (±20 V typical), avoiding unintended turn-on or oxide stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26A-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3); no JESD201 Class 2 whisker rating. | Acceptable for commercial-grade industrial designs where halogen-free requirement is absent. | Select E3 for cost-sensitive non-automotive applications where M3's halogen-free and whisker-resistance specs are unnecessary. |
| SMA5J26AHM3_A/H | Identical electrical specs; adds AEC-Q101 qualification, higher-reliability screening, and HM3 halogen-free + whisker-resistant construction. | Required for automotive ECUs, ADAS modules, and other AEC-Q101-mandated systems. | Choose HM3 variant when automotive qualification, extended temperature validation, or enhanced process reliability are mandatory. |
Compared with SMA5J26A-M3/61, the E3 version offers identical surge performance at lower cost but lacks halogen-free compliance and whisker resistance, while the HM3 variant adds AEC-Q101 qualification and enhanced process controls-making it suitable for automotive deployment without layout changes.
Availability
SMA5J26A-M3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC-DC converter input stage surge suppression requiring stable component supply and consistent halogen-free compliance.
Supply support for SMA5J26A-M3/61 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 high-reliability, high-power-density solutions.
The SMA5J series is engineered for high-energy transient suppression in space-constrained applications, targeting automotive, industrial, and telecom systems where robust 500 W surge handling and AEC-Q101 readiness are critical.
FAQ
What is the clamping voltage of the SMA5J26A-M3/61 under maximum rated surge current?
The SMA5J26A-M3/61 clamps to 42.1 V at its peak pulse current (IPPM) of 11.9 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88875, Rev. 09-Jan-2024) and defines the maximum voltage imposed on protected circuitry during worst-case surge events. Designers use this parameter to verify that downstream components remain within their absolute maximum voltage ratings when the SMA5J26A-M3/61 is active.
Is the SMA5J26A-M3/61 suitable for automotive applications?
The SMA5J26A-M3/61 itself is not AEC-Q101 qualified, but it shares identical electrical and mechanical specifications with the AEC-Q101-qualified variant SMA5J26AHM3_A/H. Its halogen-free (M3) construction, MSL Level 1 reflow rating, and 150 °C junction temperature rating make it suitable for pre-qualification prototyping and non-safety-critical automotive subsystems. For production automotive use, the HM3-suffixed part is required to meet full AEC-Q101 stress testing requirements.
How does the SMA5J26A-M3/61 differ from the SMA5J26A-E3/61?
The SMA5J26A-M3/61 and SMA5J26A-E3/61 share identical electrical parameters (VWM, VBR, VC, PPPM) and package (SMA/DO-214AC), but differ in material compliance: M3 denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, whereas E3 is RoHS-compliant but contains halogens and lacks whisker testing. Both meet J-STD-020 MSL Level 1, but only M3 satisfies strict environmental mandates for green electronics programs.
What is the maximum reverse leakage current of the SMA5J26A-M3/61 at its standoff voltage?
The SMA5J26A-M3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 26 V standoff voltage (VWM), measured at 25 °C ambient per Vishay's datasheet. This low leakage ensures minimal power loss in always-on circuits and avoids false triggering in high-impedance sensing nodes. Leakage remains well below 10 µA even at elevated temperatures up to 85 °C, supporting reliable operation in industrial environments.
Can the SMA5J26A-M3/61 be used in bidirectional configurations?
No - the SMA5J26A-M3/61 is strictly unidirectional, as indicated by its "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMA5J26CA), which uses symmetrical avalanche structure and has no polarity marking. Using SMA5J26A-M3/61 in reverse-biased AC or bipolar signal paths will result in forward conduction and potential failure. Always match suffix ("A" = unidirectional, "CA" = bidirectional) to system polarity requirements.
SMA5J26A-M3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- 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):
- 11.9A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J26A-M3/61 FAQ
1.How can I place an order for SMA5J26A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26A-M3/61 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 SMA5J26A-M3/61 reliable?
The price and inventory of SMA5J26A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J26A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26A-M3/61?
SMA5J26A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26A-M3/61 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 SMA5J26A-M3/61?
For technical support, including SMA5J26A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26A-M3/61 requirements.
6.How does Aetrix verify that SMA5J26A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J26A-M3/61 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 SMA5J26A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J26A-M3/61?
All SMA5J26A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26A-M3/61, 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 SMA5J26A-M3/61 part is unused and in its original packaging.
Return procedure for SMA5J26A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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