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Vishay General Semiconductor - Diodes Division SMCG26AHE3/57T
- Part No.:
- SMCG26AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG26AHE3/57T.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,013
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Product details
Overview
SMCG26AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount 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, 1500 W peak pulse power (PPPM), 35.6 A peak pulse current (IPPM), and clamps to 42.1 V at rated surge - used in automotive power line and sensor interface protection.
For engineers reviewing the SMCG26AHE3/57T datasheet, SMCG26AHE3/57T pinout, SMCG26AHE3/57T application, or SMCG26AHE3/57T equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), DO-215AB package dimensions, and real-world design implications for surge immunity in 12 V/24 V systems.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, responding within picoseconds to transients such as ISO 7637-2 pulses or ESD events. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown behavior across temperature (-55 °C to +150 °C).
The SMCG26AHE3/57T is rated for 1500 W peak pulse power under the standardized 10/1000 μs waveform, with low incremental surge resistance enabling effective energy diversion without thermal runaway. Its AEC-Q101 qualification confirms suitability for automotive-grade reliability requirements including temperature cycling and humidity testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before clamping begins; sets threshold for 12 V/24 V automotive bus protection. |
| VBR min/max | 28.9 V / 31.9 V at IT = 1 mA - defines guaranteed breakdown window; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 42.1 V - clamping voltage at 35.6 A surge; determines worst-case overvoltage seen by downstream ICs during transient events. |
| PPPM | 1500 W - peak pulse power handling per 10/1000 μs waveform; supports high-energy load-dump suppression in vehicle ECUs. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on 8 mm × 8 mm copper pads; informs derating above 25 °C ambient. |
| AEC-Q101 | Qualified - validated for automotive use including temperature cycling, mechanical shock, and humidity resistance per JESD22 standards. |
| Package | SMCG (DO-215AB) - low-profile SMD outline with gull-wing leads; compatible with automated placement and reflow soldering per J-STD-020 MSL level 1. |
Pinout & Package
SMCG26AHE3/57T uses the SMCG (DO-215AB) surface-mount package: gull-wing leads, matte tin-plated terminals, 0.220–0.245 inch body length, 0.115–0.125 inch width, and cathode band marking on the anode-side end. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-impedance return path. | Provides reference node for clamping action; must be routed with minimal inductance to maintain fast response. |
| Cathode | Current exit point in forward bias; marked by band; connected to protected line (e.g., CAN_H, LIN, 12 V rail). | Defines polarity-sensitive connection; incorrect orientation disables protection and risks device failure. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling; eliminates risk of junction oxidation in humid environments. |
| AEC-Q101 qualification | Validates performance across -55 °C to +150 °C operation, mechanical shock, and board-level reliability - required for engine bay and ADAS modules. |
| Low RθJL (15 °C/W) | Enables efficient heat transfer from junction to PCB leads; reduces thermal stress during repetitive surge events in industrial controls. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow profiles up to 260 °C peak - eliminates baking requirements and streamlines SMT manufacturing. |
| UL 94 V-0 molding compound | Prevents flame propagation during fault conditions; meets safety compliance for enclosed automotive and industrial enclosures. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails in engine control units against ISO 7637-2 load dump transients (up to 60 V, 400 ms). IC Role / Device Role / Timing Role: Clamping TVS placed between battery rail and DC/DC input, absorbing >100 J surges without failure. Use Value: Limits voltage to ≤42.1 V during 35.6 A surge, preventing damage to LDOs and microcontrollers rated for 40 V absolute max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on signal lines, activated within <1 ns to clamp ±8 kV HBM ESD events. Use Value: Maintains signal integrity with <1.0 μA leakage at 26 V, avoiding DC offset errors in 16-bit ADC front-ends. |
| Automotive CAN Bus Protection | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042) from coupled transients on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable here; unidirectional SMCG26AHE3/57T used on VCC side only. Use Value: Withstands repeated 1500 W surges while maintaining clamping below CAN PHY's 45 V tolerance limit. |
Use Scenario: Overvoltage suppression on primary-side rectifier output in universal-input AC/DC adapters (e.g., 100–240 VAC). IC Role / Device Role / Timing Role: Secondary-stage TVS after bulk capacitor, limiting surge-induced overshoot before regulator input. Use Value: Handles 200 A IFSM half-sine surges from rectifier turn-on, preventing MOSFET gate oxide rupture in synchronous rectifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/57T | Same VWM (26 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W. | Lower surge capacity; suitable for consumer-grade, non-automotive designs with infrequent transients. | Select when cost sensitivity outweighs automotive reliability or high-energy surge needs. |
| 1.5KE27A | Through-hole (DO-201AD), higher VBR (29.9–33.1 V), same PPPM (1500 W), no AEC-Q101 qualification. | Not suitable for automated SMT lines; lacks automotive qualification and MSL level 1 compliance. | Choose only for legacy through-hole designs where board space and reflow compatibility are secondary. |
Compared with SMAJ26A-E3/57T and 1.5KE27A, SMCG26AHE3/57T uniquely combines AEC-Q101 qualification, DO-215AB SMT compatibility, and full 1500 W surge capability - making it the only option qualified for volume automotive electronics requiring zero rework and high thermal robustness.
Availability
SMCG26AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and repeatable 1500 W transient suppression.
Supply support for SMCG26AHE3/57T 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, precision, and automotive-grade validation.
The SMCG series was developed specifically for high-reliability surface-mount transient suppression in automotive and industrial environments, balancing low profile, high surge capacity, and AEC-Q101-compliant robustness.
FAQ
What is the maximum clamping voltage of SMCG26AHE3/57T at its rated peak pulse current?
The SMCG26AHE3/57T clamps to 42.1 V at its rated peak pulse current of 35.6 A under the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is SMCG26AHE3/57T suitable for automotive applications?
Yes, SMCG26AHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and ADAS modules. Its qualification covers temperature cycling, mechanical shock, and humidity resistance, and its HE3 suffix denotes RoHS compliance plus AEC-Q101 certification - confirmed in Vishay document 88457.
What does the "HE3/57T" suffix indicate in SMCG26AHE3/57T?
The "HE3" suffix indicates RoHS-compliant, AEC-Q101-qualified construction; "57T" specifies packaging in 7-inch plastic tape-and-reel format with 850 units per reel. This ordering code aligns with Vishay's preferred part numbering system and ensures traceable, automotive-grade material flow - distinct from industrial-grade E3 or halogen-free HM3 variants.
How does SMCG26AHE3/57T differ from bidirectional TVS diodes like SMCG26CA?
SMCG26AHE3/57T is unidirectional and features a cathode band for polarity-sensitive placement, while SMCG26CA is bidirectional with no polarity marking and symmetric breakdown in both directions. The unidirectional version offers lower leakage (<1.0 μA at 26 V) and is preferred for DC rail protection; bidirectional types suit AC-coupled or floating signal lines.
What PCB layout guidance applies to SMCG26AHE3/57T for optimal thermal and electrical performance?
For rated 1500 W surge handling, Vishay specifies mounting SMCG26AHE3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Minimizing trace inductance between cathode and protected line - and using internal ground planes - preserves sub-nanosecond response. Thermal vias under pads improve RθJA but do not replace the specified pad area.
SMCG26AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC 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):
- 35.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCG)
SMCG26AHE3/57T FAQ
1.How can I place an order for SMCG26AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG26AHE3/57T 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 SMCG26AHE3/57T reliable?
The price and inventory of SMCG26AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG26AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG26AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG26AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG26AHE3/57T?
SMCG26AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG26AHE3/57T 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 SMCG26AHE3/57T?
For technical support, including SMCG26AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG26AHE3/57T requirements.
6.How does Aetrix verify that SMCG26AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG26AHE3/57T 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 SMCG26AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG26AHE3/57T?
All SMCG26AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG26AHE3/57T, 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 SMCG26AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG26AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG26AHE3/57T Tags
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