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Vishay General Semiconductor - Diodes Division SMBG26A-M3/52
- Part No.:
- SMBG26A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26A-M3/52.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,688
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Product details
Overview
SMBG26A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 26 V stand-off voltage, 42.1 V maximum clamping voltage at 14.3 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power electronics.
For engineers reviewing the SMBG26A-M3/52 datasheet, SMBG26A-M3/52 pinout, SMBG26A-M3/52 application, or SMBG26A-M3/52 equivalent, key selection criteria include unidirectional polarity, 26 V VWM, 28.9–31.9 V VBR at 1 mA, 1.0 μA max reverse leakage at VWM, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when transient voltage exceeds its breakdown threshold (VBR = 28.9–31.9 V). Its low incremental surge resistance ensures rapid energy diversion during 10/1000 μs surges up to 600 W, while maintaining stable clamping at VC = 42.1 V.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads per terminal, it features glass-passivated junction, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 (260 °C peak reflow), enabling robust automated manufacturing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown range defining turn-on threshold |
| VC @ IPPM | 42.1 V at 14.3 A - Clamped voltage during 600 W 10/1000 μs surge, limiting stress on downstream ICs |
| IPPM | 14.3 A - Peak pulse current capability under standardized surge waveform |
| ID @ VWM | ≤1.0 μA - Low leakage preserves signal integrity and power efficiency in standby |
| TJ max | +150 °C - Enables operation in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with cathode band marking on unidirectional variants. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); terminals are matte tin-plated for reliable solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction (surge clamping) | Connected to protected line (e.g., power rail or signal trace) to shunt overvoltage to ground |
| Cathode | Current exit point during clamping; marked with band | Connected to system ground or lower-potential reference to complete surge current path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients without failure-critical for 12 V/24 V automotive load-dump protection |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot across protected devices, reducing risk of latch-up or gate oxide damage |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for global OEM supply chains and industrial sustainability standards |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT processes without moisture-related popcorning or delamination |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges within 1 ns response time. Use Value: Limits rail voltage to ≤42.1 V during 600 W surges, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., 4–20 mA loop) to absorb ESD and switching noise. Use Value: 1.0 μA leakage at 26 V ensures minimal impact on precision current-loop accuracy and long-term calibration stability. |
| Motor Drive Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gate drivers in BLDC motor inverters from shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced transients before they exceed VGS(max). Use Value: 42.1 V clamping ensures gate voltage stays below typical 50 V VGS(max), avoiding irreversible gate oxide breakdown. | Use Scenario: Front-end protection of 48 V DC telecom rectifier outputs against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Unidirectional TVS installed between +48 V input and return, absorbing repetitive 10/1000 μs pulses. Use Value: 600 W rating supports sustained surge handling in central office equipment with duty cycle ≤0.01 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG26A-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Preferred for non-automotive industrial use where halogen-free requirement is absent | Select SMBG26A-M3/52 when halogen-free compliance is mandated by OEM or regional regulations. |
| SMBG26AHM3/52 | Identical electrical specs plus AEC-Q101 qualification (HM3 suffix denotes halogen-free + AEC-Q101) | Required for automotive safety-critical modules (e.g., ADAS, braking systems) | Choose SMBG26AHM3/52 if full AEC-Q101 validation is required beyond baseline AEC-Q101 in SMBG26A-M3/52. |
Compared with SMBG26A-M3/52, SMBG26A-E3/52 lacks halogen-free certification but offers identical surge performance, while SMBG26AHM3/52 adds formal AEC-Q101 documentation coverage-making it suitable for ASIL-B functional safety contexts where traceable qualification evidence is mandatory.
Availability
SMBG26A-M3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC input hardening requiring stable component supply and consistent halogen-free compliance.
Supply support for SMBG26A-M3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBG TransZORB® series is engineered for high-reliability transient suppression in harsh environments-including automotive, industrial, and telecom-where fast clamping, low leakage, and AEC-Q101 validation are essential.
FAQ
What is the breakdown voltage range for SMBG26A-M3/52?
The SMBG26A-M3/52 has a guaranteed breakdown voltage (VBR) range of 28.9 V to 31.9 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This range defines the minimum and maximum voltage at which the device enters avalanche conduction, ensuring predictable clamping behavior across production lots and temperature extremes.
Is SMBG26A-M3/52 suitable for automotive applications?
Yes, SMBG26A-M3/52 is AEC-Q101 qualified and designed for automotive use, including engine control units, body electronics, and infotainment systems. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and halogen-free construction meet Tier 1 supplier requirements for under-hood and cabin-mounted modules.
What does the "M3" suffix indicate in SMBG26A-M3/52?
The "M3" suffix in SMBG26A-M3/52 denotes halogen-free, RoHS-compliant construction with industrial-grade qualification. It distinguishes this variant from "E3" (RoHS only) and "HM3" (halogen-free + AEC-Q101), confirming compliance with environmental directives without compromising surge performance or thermal robustness.
How does SMBG26A-M3/52 compare to bidirectional TVS diodes like SMBG26CA?
SMBG26A-M3/52 is unidirectional and intended for DC line protection with defined polarity, whereas SMBG26CA is bidirectional and suited for AC or differential signal lines. The SMBG26A-M3/52 provides lower leakage (<1.0 μA) and higher forward surge capability (100 A IFSM), making it optimal for 12 V/24 V power rails where polarity is fixed.
What is the maximum clamping voltage of SMBG26A-M3/52 under surge conditions?
The SMBG26A-M3/52 exhibits a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 14.3 A, tested with a 10/1000 μs waveform. This value ensures downstream components experience no more than 42.1 V during worst-case transient events, supporting robust design margins for 3.3 V, 5 V, and 12 V logic and power stages.
SMBG26A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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):
- 14.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG26A-M3/52 FAQ
1.How can I place an order for SMBG26A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26A-M3/52 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 SMBG26A-M3/52 reliable?
The price and inventory of SMBG26A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG26A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26A-M3/52?
SMBG26A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26A-M3/52 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 SMBG26A-M3/52?
For technical support, including SMBG26A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26A-M3/52 requirements.
6.How does Aetrix verify that SMBG26A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG26A-M3/52 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 SMBG26A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG26A-M3/52?
All SMBG26A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26A-M3/52, 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 SMBG26A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG26A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26A-M3/52 Tags
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