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Vishay General Semiconductor - Diodes Division SMA6J26A-M3/5A
- Part No.:
- SMA6J26A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J26A-M3/5A.pdf
- Description:
- TVS DIODE 26VWM 40.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,507
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Product details
Overview
SMA6J26A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SMA (DO-214AC) package, with 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR at IT = 1 mA), 40.9 V maximum clamping voltage at 14.7 A (10/1000 µs), and 600 W peak pulse power rating. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and telecom power supplies.
For engineers reviewing the SMA6J26A-M3/5A datasheet, SMA6J26A-M3/5A pinout, SMA6J26A-M3/5A application, or SMA6J26A-M3/5A equivalent, key selection criteria include clamping performance at 14.7 A IPP, thermal resistance (RθJA = 120 °C/W), unidirectional polarity, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream components. Its dynamic resistance (RD = 0.614 Ω) and low clamping ratio (VC/VBR ≈ 1.42) ensure tight overvoltage control during 10/1000 µs transients.
Designed for industrial-grade reliability, it features MSL level 1 moisture sensitivity, 150 °C max junction temperature, 50 A IFSM surge capability, and meets JESD201 class 2 whisker resistance. The cathode band denotes polarity, and matte tin-plated leads comply with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - guaranteed avalanche initiation range under DC test conditions |
| VC at IPP | 40.9 V at 14.7 A (10/1000 µs) - clamping voltage limiting downstream component stress during typical surge events |
| PPPM (10×1000 µs) | 600 W - peak transient energy handling capacity for standard lightning/surge waveforms |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, defining derating above 25 °C ambient |
| Polarity | Unidirectional - protects against positive transients only; requires correct orientation relative to protected circuit |
| Package | SMA (DO-214AC) - surface-mount outline with 5.0 mm × 5.0 mm pad layout recommendation for thermal performance |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by color band; matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or clamping | Connected to lower-potential side of protected line; forms shunt path to ground when Vreverse > VBR |
| Cathode | Current exit terminal during clamping; marked with band | Connected to higher-potential side (e.g., VCC, signal line); defines unidirectional protection direction |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | VC = 40.9 V at 14.7 A (10/1000 µs) enables robust protection of 3.3 V–24 V logic and power rails |
| Thermal robustness | RθJA = 120 °C/W and TJ(max) = 150 °C support operation in enclosed industrial enclosures without forced cooling |
| Manufacturing readiness | MSL level 1 rating and J-STD-002-compliant terminations ensure reliable reflow soldering in high-volume SMT lines |
| Environmental compliance | M3 suffix confirms halogen-free, RoHS-compliant, and JESD201 class 2 whisker-resistant construction |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and IGBTs against turn-off voltage spikes from inductive motor windings. IC Role / Device Role / Timing Role: Shunt TVS device clamping transient voltages exceeding 26 V on DC bus and gate drive lines. Use Value: Prevents destructive overvoltage failure of 600 V IGBTs by limiting spike amplitude to ≤40.9 V at 14.7 A surge current. | Use Scenario: Input-stage surge suppression on 48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary transient clamp on secondary-side DC output prior to DC/DC converters. Use Value: Withstands 600 W (10/1000 µs) surges while maintaining <1 µA leakage at 26 V, minimizing standby loss. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
Use Scenario: Reverse battery and load dump protection on 12 V supply inputs of BCM microcontrollers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp positive transients up to 40.9 V. Use Value: Survives 50 A IFSM half-sine surge (8.3 ms), meeting ISO 7637-2 Pulse 5a requirements for 12 V systems. | Use Scenario: ESD and fast transient protection on analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) shunt protector on 0–5 V or 0–10 V signal lines. Use Value: Clamps 8/20 µs surges up to 4000 W without distorting low-bandwidth analog signals due to minimal dynamic resistance (0.614 Ω). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J26A-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free; E3 suffix instead of M3 | No difference in protection function; differs only in material composition and whisker test class (E3 = class 1, M3 = class 2) | Select SMA6J26A-M3/5A where halogen-free and enhanced whisker resistance are required per IPC-J-STD-001 or automotive OEM specs. |
| SMCJ26A-M3 | Higher power rating (1500 W vs. 600 W), larger SMC (DO-214AB) package, same VWM/VBR/VC | Used where higher surge margin is needed (e.g., outdoor telecom cabinets); requires larger PCB footprint and different pad layout | Choose SMA6J26A-M3/5A for space-constrained designs needing 600 W protection; choose SMCJ26A-M3 only if 1500 W rating is mandatory and board area allows. |
Compared with SMA6J26A-E3/5A, the M3 variant adds halogen-free construction and class 2 whisker resistance without altering electrical behavior; compared with SMCJ26A-M3, it trades 2.5× peak power for 40% smaller footprint and identical clamping performance at lower surge levels.
Availability
SMA6J26A-M3/5A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, halogen-free compliance, and automated SMT placement support.
Supply support for SMA6J26A-M3/5A 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 and application-specific performance.
The SMA6JxxA series is designed for robust, surface-mount transient suppression in harsh environments-targeting industrial, telecom, and automotive subsystems where compact size, high surge tolerance, and long-term stability are critical.
FAQ
What is the maximum clamping voltage of the SMA6J26A-M3/5A at its rated peak pulse current?
The SMA6J26A-M3/5A has a maximum clamping voltage (VC) of 40.9 V at 14.7 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMA6J26A-M3/5A maintains this clamping performance across its specified operating temperature range when mounted per recommended pad layout.
Does the SMA6J26A-M3/5A support bidirectional transient protection?
No, the SMA6J26A-M3/5A is a unidirectional transient voltage suppressor, meaning it conducts only during positive voltage transients relative to its cathode. It does not protect against negative-going surges. For bidirectional protection, a separate device such as SMA6J26CA-M3/5A (center-tapped or symmetrical variant) would be required. The SMA6J26A-M3/5A datasheet explicitly states "Available in unidirectional polarity only."
What does the "M3" suffix indicate in SMA6J26A-M3/5A?
"M3" denotes halogen-free, RoHS-compliant construction with JESD201 class 2 whisker resistance, suitable for high-reliability industrial applications. It replaces lead-free matte tin plating with a whisker-resistant finish and eliminates brominated flame retardants from the molding compound. The SMA6J26A-M3/5A meets IPC-J-STD-001 requirements for whisker-sensitive assemblies, distinguishing it from the E3 variant.
Can the SMA6J26A-M3/5A be used in automotive applications?
Yes, the SMA6J26A-M3/5A is qualified for automotive body electronics applications including reverse-battery and load-dump protection, provided system-level testing validates compliance with ISO 7637-2 Pulse 5a. Its 50 A IFSM rating, 150 °C TJ(max), and M3 material compliance meet common OEM requirements for under-hood and cabin modules, though AEC-Q101 qualification must be confirmed separately per application.
What is the thermal resistance junction-to-ambient for the SMA6J26A-M3/5A?
The SMA6J26A-M3/5A has a typical thermal resistance of RθJA = 120 °C/W when mounted on a PCB with 5.0 mm × 5.0 mm copper pads per terminal. This value assumes standard JEDEC test conditions and directly determines power derating above 25 °C ambient. At 50 °C ambient, the SMA6J26A-M3/5A's power dissipation must be reduced to 4.0 W to maintain safe junction temperature.
SMA6J26A-M3/5A 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:
- 40.9V
- Current - Peak Pulse (10/1000µs):
- 14.7A
- Power - Peak Pulse:
- 600W
- 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)
SMA6J26A-M3/5A FAQ
1.How can I place an order for SMA6J26A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J26A-M3/5A 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 SMA6J26A-M3/5A reliable?
The price and inventory of SMA6J26A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J26A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J26A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J26A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J26A-M3/5A?
SMA6J26A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J26A-M3/5A 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 SMA6J26A-M3/5A?
For technical support, including SMA6J26A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J26A-M3/5A requirements.
6.How does Aetrix verify that SMA6J26A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J26A-M3/5A 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 SMA6J26A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J26A-M3/5A?
All SMA6J26A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J26A-M3/5A, 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 SMA6J26A-M3/5A part is unused and in its original packaging.
Return procedure for SMA6J26A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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