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Vishay General Semiconductor - Diodes Division SMCG26CA-E3/9AT
- Part No.:
- SMCG26CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG26CA-E3/9AT.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,257
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Product details
Overview
SMCG26CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for clamping fast voltage transients on signal or power lines. 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 (10/1000 µs), 35.6 A peak pulse current (IPPM), and clamps to ≤42.1 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SMCG26CA-E3/9AT datasheet, SMCG26CA-E3/9AT pinout, SMCG26CA-E3/9AT application, or SMCG26CA-E3/9AT equivalent, this page delivers verified electrical parameters, bidirectional polarity behavior, thermal resistance (RθJA = 75 °C/W), JEDEC-compliant packaging (DO-215AB), and direct alternatives with documented clamping and leakage differences.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping positive and negative transients above its breakdown threshold without polarity marking. Its glass-passivated junction ensures stable VBR over temperature and life cycle, while low incremental surge resistance enables consistent clamping under repetitive 10/1000 µs surges up to 1500 W.
Designed for surface-mount automated assembly, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, and its DO-215AB package provides mechanical robustness and thermal performance via 8.0 mm × 8.0 mm copper pad mounting. The device exhibits <1.0 µA reverse leakage at 26 V (VWM) and 42.1 V maximum clamping voltage at 35.6 A IPPM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias margin. |
| VBR min/max | 28.9 V / 31.9 V at 1 mA - Confirmed bidirectional breakdown window; ensures reliable turn-on across production lot and temperature. |
| VC @ IPPM | ≤42.1 V at 35.6 A - Clamping voltage under full-rated 10/1000 µs surge; determines protected IC's maximum stress exposure. |
| PPPM | 1500 W - Peak transient energy handling capability; supports IEC 61000-4-5 Level 4 surge immunity designs. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at stand-off voltage; critical for low-power sensor and battery-backed circuit integrity. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm pads; enables derating calculations for sustained surge duty. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suitable for under-hood and ADAS sensor nodes. |
Pinout & Package
SMCG26CA-E3/9AT uses the SMCG (DO-215AB) surface-mount package: a gull-wing, dual-terminal, bidirectional case with no polarity marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either terminal serves as anode or cathode depending on transient polarity - enables placement without orientation check. |
| Case (exposed metal) | Thermal path / mechanical anchor | Not electrically connected; provides thermal conduction to PCB copper and mechanical stability during reflow and vibration. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC characteristics for both polarities - eliminates need for polarity-aware layout or external series components in AC-coupled lines. |
| AEC-Q101 qualification | Validated for automotive environments including -55 °C to +150 °C operation, thermal shock, and humidity testing - supports Tier-1 ECU and sensor module deployment. |
| Low clamping ratio (VC/VBR) | ≤1.46 (42.1 V / 28.9 V) - Minimizes overvoltage overshoot during fast transients, protecting 3.3 V and 5 V logic interfaces without additional series impedance. |
| MSL Level 1 rating | Unlimited floor life and 260 °C peak reflow compatibility - allows use in high-volume SMT lines without dry-pack or baking requirements. |
| Glass-passivated junction | Stable leakage and breakdown over 1000+ thermal cycles - ensures long-term reliability in industrial control cabinets subject to daily thermal cycling. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load-dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching transceiver ESD structures. Use Value: Limits transient voltage to ≤42.1 V during 35.6 A surges, preserving transceiver functionality without adding propagation delay or signal distortion. |
Use Scenario: Safeguarding 24 V analog input channels (e.g., 4–20 mA loops) in PLC analog modules against field-wiring induced transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed across input terminals to clamp common-mode surges while maintaining DC accuracy below 26 V. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without degrading 16-bit ADC resolution due to sub-1 µA leakage. |
| Consumer USB Power Delivery | Telecom Line Card Protection |
Use Scenario: Secondary-level surge suppression on USB-C VBUS lines downstream of primary front-end protection in portable docking stations. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp limiting VBUS overvoltage during hot-plug events and cable-induced ringing. Use Value: Clamps within nanoseconds to ≤42.1 V, preventing damage to USB PD controllers rated for 28 V absolute maximum, while supporting 100 W charging. |
Use Scenario: Protecting Ethernet PHY interface pins (e.g., MDI-X pairs) on telecom access equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional TVS placed adjacent to RJ45 magnetics to absorb common-mode energy. Use Value: Maintains signal integrity up to 1 Gbps by avoiding RC filtering effects, with clamping that preserves PHY receiver thresholds during 1.5 kV/0.5 µs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CA | Same VWM (26 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (42.7 V at 9.4 A); SMA (DO-214AC) package, larger footprint. | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W capability is required. | Select SMAJ26CA only when board space permits larger package and surge threat level is ≤400 W. |
| SMBJ26CA | Same VWM and bidirectional function, PPPM = 600 W, VC = 42.1 V at 14.3 A; SMB (DO-214AA) package, intermediate size between SMA and SMCG. | Supports mid-tier surge immunity (Level 3), but insufficient for AEC-Q101-compliant automotive power-line protection requiring 1500 W. | Choose SMBJ26CA for cost-sensitive industrial controls where 600 W surge margin suffices and DO-214AA footprint is preferred. |
Compared with SMAJ26CA and SMBJ26CA, SMCG26CA-E3/9AT delivers 2.5× and 2.5× higher peak pulse power respectively, maintains identical clamping voltage at higher current, and offers AEC-Q101 qualification and DO-215AB's superior thermal performance - making it the only option for automotive-grade 1500 W surge protection in compact layouts.
Availability
SMCG26CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor nodes, industrial PLC analog inputs, USB-C power delivery systems, and telecom line card protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG26CA-E3/9AT 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 qualification.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 validation with DO-215AB's thermal efficiency and automated assembly compatibility.
FAQ
What is the clamping voltage of SMCG26CA-E3/9AT at its rated peak pulse current?
The SMCG26CA-E3/9AT clamps to a maximum of 42.1 V at its rated peak pulse current of 35.6 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024. The clamping voltage directly determines the maximum stress imposed on downstream ICs during surge events, and SMCG26CA-E3/9AT maintains this spec across its full operating temperature range.
Is SMCG26CA-E3/9AT suitable for automotive applications?
Yes, SMCG26CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and ADAS sensor modules. Its qualification covers temperature cycling, high-temperature reverse bias (HTRB), and ESD testing per AEC standards. The device's 1500 W surge rating, -55 °C to +150 °C operating range, and DO-215AB package make SMCG26CA-E3/9AT appropriate for load-dump and ISO 7637-2 transient protection in ECUs and body control units.
Does SMCG26CA-E3/9AT have polarity markings?
No, SMCG26CA-E3/9AT is a bidirectional TVS diode and carries no polarity marking on its DO-215AB package. Both terminals are functionally identical, allowing symmetrical placement across differential or AC-coupled signal lines without orientation constraints. This simplifies PCB layout and automated placement, unlike unidirectional variants (e.g., SMCG26A) which feature a cathode band.
What is the maximum reverse leakage current for SMCG26CA-E3/9AT at 26 V?
The maximum reverse leakage current (ID) for SMCG26CA-E3/9AT is 1.0 µA at its 26 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on high-impedance sensor circuits and battery-powered systems. Leakage remains within specification up to +125 °C, supporting reliable operation in thermally demanding industrial enclosures where SMCG26CA-E3/9AT is commonly deployed.
What package type does SMCG26CA-E3/9AT use, and what are its key mechanical features?
SMCG26CA-E3/9AT uses the SMCG (DO-215AB) surface-mount package: a gull-wing, dual-terminal outline with 0.220–0.245 inch lead length and 0.024–0.040 inch lead width. Key features include matte tin-plated leads compliant with J-STD-002, MSL Level 1 rating for 260 °C reflow, UL 94 V-0 molding compound, and optimized thermal path to 8.0 mm × 8.0 mm copper pads. These attributes make SMCG26CA-E3/9AT ideal for high-reliability, high-volume SMT assembly.
SMCG26CA-E3/9AT 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG26CA-E3/9AT FAQ
1.How can I place an order for SMCG26CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG26CA-E3/9AT 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 SMCG26CA-E3/9AT reliable?
The price and inventory of SMCG26CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG26CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG26CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG26CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG26CA-E3/9AT?
SMCG26CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG26CA-E3/9AT 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 SMCG26CA-E3/9AT?
For technical support, including SMCG26CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG26CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG26CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG26CA-E3/9AT 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 SMCG26CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG26CA-E3/9AT?
All SMCG26CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG26CA-E3/9AT, 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 SMCG26CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG26CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG26CA-E3/9AT Tags
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