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Vishay General Semiconductor - Diodes Division SMCG26A-E3/57T
- Part No.:
- SMCG26A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG26A-E3/57T.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,704
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Product details
Overview
SMCG26A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, featuring a 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), and clamping voltage of 42.1 V at 35.6 A. It protects MOSFETs and ICs against inductive switching transients in automotive power electronics.
For engineers reviewing the SMCG26A-E3/57T datasheet, SMCG26A-E3/57T pinout, SMCG26A-E3/57T application, or SMCG26A-E3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 1500 W surge capability with 10/1000 µs waveform, low clamping ratio (VC/VBR ≈ 1.39), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for suppressing ESD and load-dump transients before downstream components are damaged.
The SMCG26A-E3/57T is rated for TJ = –55 °C to +150 °C, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation under high ambient conditions when mounted per recommended pad layout. It meets J-STD-020 MSL Level 1 and passes JESD201 Class 2 whisker testing.
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 margin over VWM |
| VC @ IPPM | 42.1 V at 35.6 A - Clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - Peak transient energy absorption capacity under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - Low leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - Enables use in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount gull-wing leaded package with matte tin-plated terminals, 0.220–0.245 inch body length, compatible with standard reflow profiles (peak 260 °C). Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines current direction during clamping |
| Cathode | High-side input terminal | Connected to protected line (e.g., 24 V rail); marked with band; carries full surge current into ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without dry-pack requirements |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics per stress test standards |
| Low incremental surge resistance | Minimizes VC rise during high-current transients, improving protection margin for 24 V systems |
| RoHS-compliant E3 suffix | Meets industrial-grade environmental compliance with matte tin plating and J-STD-002 solderability |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 24 V supply lines feeding ECUs and body control modules against ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp transients up to 1500 W. Use Value: Limits clamped voltage to 42.1 V, maintaining safe margin below 45 V input rating of downstream regulators. | Use Scenario: Safeguarding gate drivers and microcontrollers connected to IGBT half-bridges in variable-frequency drives. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kickback from motor windings during PWM switching. Use Value: Fast <1 ns response prevents latch-up in logic-level MOSFETs exposed to 35.6 A surge currents. |
| Telecom DC Power Feeds | Automotive Sensor Signal Lines |
Use Scenario: Surge protection on -48 V telecom rectifier outputs subject to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Unidirectional clamping device installed at power entry point before DC/DC isolation stage. Use Value: 1500 W PPPM rating supports compliance with Level 4 (4 kV) surge immunity testing. | Use Scenario: Shielding LIN bus transceivers and Hall-effect sensors from battery reversal and jump-start transients. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS placed across sensor VCC/GND pins to suppress sub-100 ns ESD events. Use Value: Maintains signal fidelity with minimal loading due to ultra-low ID at 26 V operating voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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, higher RθJA (110 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 | Select SMCG26A-E3/57T when 1500 W surge handling and AEC-Q101 qualification are required. |
| SMCJ26A-E3/57T | Same VWM (26 V), identical PPPM (1500 W), but larger SMC (DO-214AB) package and non-AEC-Q101 rated | Acceptable for industrial use; lacks automotive qualification and tighter thermal performance (RθJA = 100 °C/W) | Choose SMCG26A-E3/57T for space-constrained automotive PCBs requiring AEC-Q101 and optimized thermal resistance. |
Compared with SMAJ26A-E3/57T and SMCJ26A-E3/57T, the SMCG26A-E3/57T delivers equivalent surge robustness in a smaller footprint, certified automotive reliability, and superior thermal management-making it optimal for high-density 24 V system designs where board area and qualification rigor are critical.
Availability
SMCG26A-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, and telecom DC power feeds requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG26A-E3/57T 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, and protection devices with emphasis on high-reliability and automotive-grade performance.
The SMCG series was developed specifically for high-power transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 qualification, low-profile packaging, and industry-leading 1500 W surge capability.
FAQ
What is the clamping voltage of SMCG26A-E3/57T and how is it measured?
The SMCG26A-E3/57T has a maximum clamping voltage (VC) of 42.1 V, measured at a peak pulse current (IPPM) of 35.6 A using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per Vishay's datasheet and reflects worst-case voltage seen by protected circuitry during transient events.
Is SMCG26A-E3/57T suitable for automotive applications?
Yes, SMCG26A-E3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C operating range, MSL Level 1 rating, and validation against temperature cycling, HTRB, and mechanical shock make it appropriate for ECUs, body controllers, and sensor modules.
What does the "E3/57T" suffix indicate in SMCG26A-E3/57T?
The "E3" denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "57T" specifies packaging in 7-inch plastic tape-and-reel format with 850 units per reel. This configuration supports automated SMT assembly and complies with J-STD-002 solderability requirements.
How does SMCG26A-E3/57T differ from bidirectional variants like SMCG26CA?
SMCG26A-E3/57T is unidirectional with cathode marking and forward conduction capability, while SMCG26CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The unidirectional version offers lower leakage (<1.0 µA vs. ≤2.0 µA for CA types) and is preferred for DC rail protection.
What PCB layout guidance applies to SMCG26A-E3/57T for optimal thermal performance?
Vishay specifies mounting SMCG26A-E3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated PPPM and thermal resistance (RθJA = 75 °C/W). Minimizing trace inductance and maximizing copper area directly improves surge current handling and junction temperature control.
SMCG26A-E3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG26A-E3/57T FAQ
1.How can I place an order for SMCG26A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG26A-E3/57T 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 SMCG26A-E3/57T reliable?
The price and inventory of SMCG26A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG26A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG26A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG26A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG26A-E3/57T?
SMCG26A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG26A-E3/57T 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 SMCG26A-E3/57T?
For technical support, including SMCG26A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG26A-E3/57T requirements.
6.How does Aetrix verify that SMCG26A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG26A-E3/57T 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 SMCG26A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG26A-E3/57T?
All SMCG26A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG26A-E3/57T, 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 SMCG26A-E3/57T part is unused and in its original packaging.
Return procedure for SMCG26A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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