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Vishay General Semiconductor - Diodes Division SMBG26AHE3/52
- Part No.:
- SMBG26AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26AHE3/52.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,061
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Product details
Overview
SMBG26AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. 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 power electronics and industrial sensor interfaces.
For engineers reviewing the SMBG26AHE3/52 datasheet, SMBG26AHE3/52 pinout, SMBG26AHE3/52 application, or SMBG26AHE3/52 equivalent, key selection criteria include clamping performance under 14.3 A surge, AEC-Q101 qualification for automotive reliability, unidirectional polarity with cathode band marking, 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 voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at 26 V), while the low incremental surge resistance enables rapid response to fast-rising transients (e.g., ISO 7637-2 pulses).
The SMBG26AHE3/52 is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and is qualified to AEC-Q101 - confirming suitability for under-hood automotive modules where thermal cycling and long-term reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 42.1 V at 14.3 A - clamping voltage limits stress on protected ICs during 600 W transient events. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform supports automotive load-dump and inductive-switching surges. |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine) allows use in high-energy fault conditions. |
| TJ max | +150 °C - extended junction temperature range enables deployment in engine control units and power converters. |
| Leakage @ VWM | <1.0 µA - ultra-low reverse leakage preserves battery life in always-on automotive circuits. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by molded band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; carries full surge current during clamping. |
| Cathode | Protected line connection / voltage reference node | Connected to the line being protected (e.g., 24 V rail); band-marked end indicates polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Glass-passivated junction | Ensures stable VBR and low leakage over time and temperature, critical for long-life embedded systems. |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2b (inductive switching) without degradation. |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns; peak reflow up to 260 °C. |
| Low-profile SMBG package | 0.235" × 0.130" footprint with 0.030" height optimizes board space in dense automotive ECUs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load-dump transients (up to 60 V, 400 ms). IC Role / Device Role / Timing Role: Shunt clamping device placed between 24 V rail and chassis ground, activated within nanoseconds upon overvoltage detection. Use Value: Limits rail voltage to ≤42.1 V during 14.3 A surge, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and cable discharge. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional SMBG26AHE3/52 protects grounded-signal paths with cathode tied to signal line. Use Value: Clamps ESD events (IEC 61000-4-2 ±8 kV contact) to <42.1 V, preserving ADC input integrity and reducing system-level filtering. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing 24–48 V DC inputs of PoE-powered network switches and base stations against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of DC-DC converters and hot-swap controllers. Use Value: Absorbs 600 W transient energy without failure, maintaining system uptime and eliminating need for secondary crowbar circuits. | Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart washing machine motor control boards from back-EMF spikes during brushless motor commutation. IC Role / Device Role / Timing Role: Unidirectional clamp placed across motor phase outputs or driver supply pins. Use Value: Limits voltage overshoot to 42.1 V at 14.3 A, preventing latch-up or gate oxide rupture in 32-bit MCUs and MOSFETs. |
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), but lower PPPM = 600 W (same), higher VC = 42.5 V; SMB (DO-214AA) package, slightly larger footprint. | Compatible in 24 V rail protection but requires PCB pad revision due to different outline and thermal pad layout. | Select when legacy SMB layout exists and AEC-Q101 is not required. |
| SMCJ26AHE3/52 | Same VWM/VBR/VC, but higher PPPM = 1500 W; SMC (DO-214AB) package, larger size and higher IPPM = 35.2 A. | Overqualified for typical 24 V surges; suited for high-energy industrial drives where >600 W margin is mandated. | Choose only if system-level surge testing exceeds 600 W requirements or thermal derating demands lower RθJA. |
Compared with SMBJ26A-E3/52 and SMCJ26AHE3/52, the SMBG26AHE3/52 delivers identical clamping performance in a smaller, AEC-Q101-qualified package optimized for space-constrained automotive modules - making it the preferred choice when board area and automotive compliance are primary constraints.
Availability
SMBG26AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply with AEC-Q101 assurance and SMT manufacturability.
Supply support for SMBG26AHE3/52 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was engineered specifically for high-reliability surface-mount transient suppression in automotive and industrial environments - prioritizing AEC-Q101 compliance, low-profile packaging, and consistent clamping under repetitive surge stress.
FAQ
What is the clamping voltage of SMBG26AHE3/52 at its rated peak pulse current?
The SMBG26AHE3/52 has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 14.3 A, measured using the standard 10/1000 µs waveform. This value ensures protected circuitry remains below critical voltage thresholds during transient events. The SMBG26AHE3/52 achieves this with low incremental surge resistance and a tightly controlled breakdown region.
Is SMBG26AHE3/52 qualified for automotive applications?
Yes, SMBG26AHE3/52 is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88456, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating its use in engine compartments, body control modules, and other automotive subsystems.
What does the "HE3" suffix indicate in SMBG26AHE3/52?
The "HE3" suffix in SMBG26AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads. Per Vishay's ordering nomenclature, "HE3" distinguishes this grade from industrial-only "E3" variants and halogen-free "HM3" versions - confirming both environmental compliance and automotive reliability certification for the SMBG26AHE3/52.
Can SMBG26AHE3/52 be used in bidirectional protection circuits?
No, SMBG26AHE3/52 is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. For bidirectional protection, Vishay specifies parts with "CA" suffixes (e.g., SMBG26CA). Using SMBG26AHE3/52 in AC or floating signal paths would result in forward conduction during negative transients - making it unsuitable without external polarity management.
What is the thermal resistance of SMBG26AHE3/52, and how does it affect layout?
The SMBG26AHE3/52 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. To maintain safe operation under repetitive surges, PCB layout must replicate this minimum pad area - undersized traces or insufficient copper will cause excessive junction heating and premature failure of the SMBG26AHE3/52.
SMBG26AHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG26AHE3/52 FAQ
1.How can I place an order for SMBG26AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26AHE3/52 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 SMBG26AHE3/52 reliable?
The price and inventory of SMBG26AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG26AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26AHE3/52?
SMBG26AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26AHE3/52 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 SMBG26AHE3/52?
For technical support, including SMBG26AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26AHE3/52 requirements.
6.How does Aetrix verify that SMBG26AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG26AHE3/52 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 SMBG26AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG26AHE3/52?
All SMBG26AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26AHE3/52, 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 SMBG26AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG26AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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