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Vishay General Semiconductor - Diodes Division SMBG26A-E3/52
- Part No.:
- SMBG26A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26A-E3/52.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,777
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Product details
Overview
SMBG26A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.1 V maximum clamping voltage (VC) at 14.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on automotive sensor signal lines, industrial I/O ports, and DC power rails.
For engineers reviewing the SMBG26A-E3/52 datasheet, SMBG26A-E3/52 pinout, SMBG26A-E3/52 application, or SMBG26A-E3/52 equivalent, key selection criteria include clamping performance under 14.3 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification for automotive use, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at 26 V) and fast response time (<1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes and ESD events.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 100 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W. It meets J-STD-020 MSL Level 1 (260 °C peak reflow) and is RoHS-compliant per E3 suffix, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
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 - precise avalanche onset range defining protection threshold |
| VC @ IPPM | 42.1 V at 14.3 A - clamped voltage during 600 W transient, limiting stress on protected ICs |
| IPPM | 14.3 A - peak pulse current capability with 10/1000 µs waveform, derated above 25 °C |
| PPPM | 600 W - surge power handling capacity, validated per ANSI/IEEE C62.35 standards |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage ID | ≤1.0 µA at 26 V - minimal standby power loss and signal integrity impact on high-impedance nodes |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with molded UL 94 V-0 compound; cathode indicated by band on body; terminals are matte tin-plated for reliable solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to ground or low-side reference; completes clamping path during transients |
| Cathode | Reverse-biased input terminal (marked with band) | Connected to protected line (e.g., CAN_H, sensor output); triggers avalanche when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| 600 W peak pulse power (10/1000 µs) | Robust suppression of load-dump and ISO 7637-2 Pulse 5a transients without degradation |
| Glass passivated junction | Stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning or baking |
| Low profile SMBG package | Enables high-density PCB layouts and automated pick-and-place with <0.41 mm lead thickness |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bays and chassis modules. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between sensor output and ground, triggered only during overvoltage events. Use Value: Limits transient voltage to ≤42.1 V, preserving ADC input integrity and preventing latch-up in microcontroller front-ends. | Use Scenario: Safeguarding 24 V PLC digital input channels against inductive kickback from solenoid and relay coils. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to clamp surges before reaching optocoupler or Schmitt trigger inputs. Use Value: Withstands 100 A non-repetitive forward surge (IFSM), ensuring survival during repeated coil de-energization events. |
| DC Power Rail Protection | Automotive CAN Bus Line Protection |
Use Scenario: Secondary overvoltage protection on 24 V supply rails feeding infotainment head units and telematics modules. IC Role / Device Role / Timing Role: Parallel-connected TVS referenced to ground, activated only when rail exceeds 26 V due to alternator regulation faults. Use Value: Clamps 600 W transients within nanoseconds, preventing damage to LDOs, PMICs, and memory devices downstream. | Use Scenario: Bidirectional-capable variant not applicable; SMBG26A-E3/52 used on single-ended CAN power supply (VCC) or shield lines where unidirectional clamping suffices. IC Role / Device Role / Timing Role: Ground-referenced clamp on 5 V or 3.3 V CAN transceiver auxiliary supplies, suppressing coupling-induced surges. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure compliance with automotive environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A-E3/52 | Same VWM (26 V), identical SMB (DO-214AA) package but 1.6 mm wider body; 600 W rating, slightly higher VC (43.0 V) | SMBJ series uses DO-214AA (larger footprint); less suitable for ultra-dense layouts requiring DO-215AA's 4.57 mm length | Select SMBG26A-E3/52 when board space is constrained and DO-215AA's 0.180" length is required. |
| 1.5SMC26A | Same electrical specs (26 V VWM, 42.1 V VC), but in larger SMC (DO-214AB) package; 1.5 kW rating, higher IPPM (35.3 A) | Designed for higher-energy transients; requires 2.5× more PCB area and lacks AEC-Q101 qualification | Choose SMBG26A-E3/52 for automotive-grade reliability and compact SMT integration where 600 W suffices. |
Compared with SMBJ26A-E3/52 and 1.5SMC26A, SMBG26A-E3/52 delivers identical clamping performance in the smallest qualified footprint, enabling tighter layout spacing and direct compatibility with AEC-Q101-compliant automotive production lines without redesign.
Availability
SMBG26A-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O port hardening, and DC power rail safeguarding requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMBG26A-E3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMBG series was engineered for high-volume automotive and industrial applications demanding AEC-Q101 qualification, low-profile SMT integration, and repeatable clamping performance under harsh thermal and electrical stress.
FAQ
What is the clamping voltage of SMBG26A-E3/52 at its rated peak pulse current?
The SMBG26A-E3/52 has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 14.3 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The SMBG26A-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG26A-E3/52 suitable for automotive applications?
Yes, SMBG26A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted systems. Its construction includes glass-passivated junction, matte tin-plated leads compliant with J-STD-002, and MSL Level 1 moisture sensitivity. The SMBG26A-E3/52 operates reliably from -55 °C to +150 °C junction temperature, meeting requirements for engine control units, sensor interfaces, and infotainment power domains.
What does the "E3/52" suffix indicate in SMBG26A-E3/52?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin plating and JESD 201 Class 2 whisker resistance. The "/52" indicates packaging in 7" diameter plastic tape and reel, with a base quantity of 750 units per reel. This configuration ensures compatibility with high-speed SMT placement equipment and supports traceable, controlled manufacturing flow for the SMBG26A-E3/52.
How does SMBG26A-E3/52 differ from bidirectional TVS diodes like SMBG26CA?
SMBG26A-E3/52 is unidirectional and features a cathode band marking; it conducts only in reverse breakdown and blocks forward current beyond ~3.5 V. In contrast, SMBG26CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The SMBG26A-E3/52 is selected for DC-coupled lines where polarity is fixed (e.g., power rails, sensor outputs), whereas SMBG26CA suits AC or differential signal paths like data lines.
What is the thermal resistance of SMBG26A-E3/52, and how does it affect layout design?
The SMBG26A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's mechanical drawing. To maintain safe junction temperatures under repetitive surges, designers must allocate adequate copper area and avoid excessive trace impedance - critical for sustained reliability of the SMBG26A-E3/52 in high-duty-cycle applications.
SMBG26A-E3/52 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:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG26A-E3/52 FAQ
1.How can I place an order for SMBG26A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26A-E3/52 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-E3/52 reliable?
The price and inventory of SMBG26A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG26A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26A-E3/52?
SMBG26A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26A-E3/52 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-E3/52?
For technical support, including SMBG26A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26A-E3/52 requirements.
6.How does Aetrix verify that SMBG26A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG26A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG26A-E3/52?
All SMBG26A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBG26A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26A-E3/52 Tags
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