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Vishay General Semiconductor - Diodes Division SMBG26AHE3/5B
- Part No.:
- SMBG26AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26AHE3/5B.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,572
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Product details
Overview
SMBG26AHE3/5B 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 in automotive sensor signal lines, industrial I/O ports, and DC power rails.
For engineers reviewing the SMBG26AHE3/5B datasheet, SMBG26AHE3/5B pinout, SMBG26AHE3/5B application, or SMBG26AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 26 V and rapidly transitions to low-impedance conduction above its 28.9–31.9 V breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBG26AHE3/5B is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 100 °C/W junction-to-ambient thermal resistance, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for high-reliability automotive and industrial PCB assembly without moisture sensitivity concerns.
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 ensuring predictable turn-on under surge conditions |
| VC @ IPPM | 42.1 V at 14.3 A - Clamping voltage limits protected circuit stress during 600 W transient events |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 μs waveform |
| IFSM | 100 A - Surge current tolerance for 8.3 ms half-sine wave, critical for motor driver protection |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-power industrial enclosures |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002; cathode indicated by band marking; RoHS-compliant and halogen-free (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., CAN_H, sensor output, power input) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against severe ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualification | Validates long-term reliability for automotive applications including engine control, ADAS sensors, and body electronics |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge) |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without baking or special handling in high-volume SMT lines |
| Glass passivated junction | Ensures stable leakage current (<1.0 μA) and consistent VBR across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, and position sensors in engine bay or chassis modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and ground to clamp positive-going transients while preserving DC accuracy. Use Value: Maintains signal integrity under ISO 16750-2 load dump (up to 35 V for 60 s) and suppresses 10/1000 μs spikes up to 600 W without degradation. | Use Scenario: Safeguarding RS-485, CAN, or digital I/O pins on PLC modules subjected to field wiring surges and electrostatic discharge. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected anode-to-ground, cathode-to-line to limit voltage excursions during cable coupling events. Use Value: Limits line voltage to ≤42.1 V during 14.3 A transients, preventing damage to transceivers rated for ≤58 V absolute maximum. |
| DC Power Rail Protection | Consumer Device USB Port Protection |
Use Scenario: Secondary overvoltage protection on 24 V DC input rails of industrial cameras, motor drives, and PoE-powered equipment. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from inductive kickback and hot-swap transients on main supply lines. Use Value: Handles 100 A 8.3 ms surge events (e.g., relay coil de-energization) without failure, complementing upstream fusing. | Use Scenario: ESD and surge protection on VBUS and D+/D− lines of USB 2.0 ports in smart home hubs and portable test instruments. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (CJ < 100 pF at 0 V) placed between data/power lines and ground. Use Value: Clamps ±15 kV contact ESD per IEC 61000-4-2 while adding <0.5 pF parasitic capacitance to preserve signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG26AE3/5B | Same electrical specs but lacks AEC-Q101 qualification; base P/N-E3 vs HE3 | Not approved for automotive use; suitable only for industrial/commercial grade designs | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMAJ26A-E3/5B | Same VWM/VC, but lower PPPM = 400 W; SMA package (DO-214AC), larger footprint | Lower surge margin; less suitable for harsh automotive environments requiring 600 W immunity | Choose only if board space allows SMA and 400 W rating satisfies system-level surge testing |
Compared with SMBG26AHE3/5B, SMBG26AE3/5B omits automotive qualification but matches all electrical parameters, while SMAJ26A-E3/5B trades 33 % lower pulse power and larger package for broader distributor availability - making SMBG26AHE3/5B the optimal choice where AEC-Q101 compliance and compact SMBG form factor are mandatory.
Availability
SMBG26AHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMBG26AHE3/5B 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 optimization.
The SMBG series was engineered for high-power, surface-mount transient suppression in space-constrained automotive and industrial systems - delivering AEC-Q101-qualified robustness in the industry's smallest standardized TVS package.
FAQ
What is the clamping voltage of SMBG26AHE3/5B at its rated peak pulse current?
The SMBG26AHE3/5B has a maximum clamping voltage (VC) of 42.1 V at 14.3 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during worst-case transient events. The SMBG26AHE3/5B maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C), ensuring consistent protection in demanding environments.
Is SMBG26AHE3/5B suitable for automotive applications?
Yes, SMBG26AHE3/5B is AEC-Q101 qualified and specifically designed for automotive use. Its qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing - validating reliability in engine control units, ADAS camera modules, and body electronics. The HE3 suffix explicitly denotes AEC-Q101 compliance, distinguishing it from industrial-grade variants like SMBG26AE3/5B. Engineers deploying SMBG26AHE3/5B in automotive systems can rely on its documented performance under ISO 7637-2 and ISO 16750-2 test profiles.
What does the "HE3/5B" suffix indicate in SMBG26AHE3/5B?
The "HE3" suffix indicates RoHS-compliant, AEC-Q101-qualified construction with halogen-free molding compound, while "5B" specifies packaging in 13-inch diameter tape-and-reel format containing 3200 units per reel. This differs from "52" packaging (7-inch reel, 750 units) and confirms compatibility with high-speed pick-and-place equipment used in automotive electronics manufacturing. The HE3/5B combination ensures both regulatory compliance and production-line readiness for volume SMT assembly of SMBG26AHE3/5B.
How does SMBG26AHE3/5B compare to bidirectional TVS diodes like SMBG26CA?
SMBG26AHE3/5B is unidirectional and optimized for clamping positive transients relative to ground, whereas SMBG26CA is bidirectional and suppresses both polarities - making it suitable for AC-coupled or differential lines like RS-485. The SMBG26AHE3/5B offers tighter leakage control (<1.0 μA at 26 V) and higher surge current rating (14.3 A vs. ~13.2 A for SMBG26CA), but cannot protect against negative-going surges. Selection depends on circuit topology: SMBG26AHE3/5B is preferred for DC power and single-ended signal lines with defined ground reference.
What is the thermal resistance of SMBG26AHE3/5B, and how does it affect layout?
SMBG26AHE3/5B 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 datasheet; reducing pad area increases thermal impedance and risks exceeding the 150 °C max junction temperature during repetitive surges. For reliable operation under frequent transient events, designers must adhere to the specified pad dimensions and consider adding thermal vias to inner ground planes to improve heat dissipation in the SMBG26AHE3/5B layout.
SMBG26AHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG26AHE3/5B FAQ
1.How can I place an order for SMBG26AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26AHE3/5B 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 SMBG26AHE3/5B reliable?
The price and inventory of SMBG26AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG26AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26AHE3/5B?
SMBG26AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26AHE3/5B 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 SMBG26AHE3/5B?
For technical support, including SMBG26AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26AHE3/5B requirements.
6.How does Aetrix verify that SMBG26AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG26AHE3/5B 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 SMBG26AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG26AHE3/5B?
All SMBG26AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26AHE3/5B, 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 SMBG26AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG26AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26AHE3/5B Tags
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