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Vishay General Semiconductor - Diodes Division SMCG26CA-E3/57T
- Part No.:
- SMCG26CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG26CA-E3/57T.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,526
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Product details
Overview
SMCG26CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection on signal and 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 (PPPM), clamping voltage of 42.1 V at 35.6 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG26CA-E3/57T datasheet, SMCG26CA-E3/57T pinout, SMCG26CA-E3/57T application, or SMCG26CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 10/1000 μs surge rating, low clamping ratio (VC/VBR ≈ 1.4), RoHS-compliant matte tin terminations, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within picoseconds to transients exceeding its VWM. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the bidirectional symmetry enables protection on AC-coupled or floating lines without polarity concerns.
The SMCG26CA-E3/57T delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions when mounted on 8.0 mm × 8.0 mm copper pads. Its thermal resistance (RθJA = 75 °C/W) and 150 °C max junction temperature support sustained operation in automotive under-hood and industrial control environments.
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 - Ensures reliable turn-on above normal operating voltage with margin |
| VC @ IPPM | 42.1 V at 35.6 A - Clamped voltage during 10/1000 μs surge; defines protected circuit's maximum stress level |
| PPPM | 1500 W - Peak transient energy handling capacity under standard surge waveform |
| ID @ VWM | ≤1.0 μA - Ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - Enables deployment in high-temperature automotive and industrial locations |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements (HTOL, TC, HTRB, etc.) |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded case with 7.87 mm × 10.16 mm footprint, UL 94 V-0 molding compound, and matte tin-plated terminals solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | Connected to line being protected; symmetrical with cathode for AC or floating applications |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Connected to line being protected; no polarity marking on bidirectional variants like SMCG26CA-E3/57T |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC, differential, or ungrounded signal paths without polarity constraints |
| 1500 W 10/1000 μs rating | Withstands high-energy transients from inductive switching (e.g., solenoids, motors) and ESD events |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body electronics, and ADAS sensor interfaces |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow processes without preconditioning or special handling |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity and contamination |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS device clamping transients before they reach precision ADC inputs or signal conditioning op-amps. Use Value: Maintains sensor accuracy by limiting voltage excursions to ≤42.1 V, preventing latch-up or damage to downstream ICs rated for ≤45 V absolute maximum. | Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle body control modules against ISO 7637-2 Pulse 1, 2a, and 5a surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential pair to suppress common-mode and differential-mode transients. Use Value: Preserves CAN signal integrity with <1.0 μA leakage at 26 V, avoiding bus loading or false dominant states during quiescent operation. |
| Telecom DSL Line Surge Suppression | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Guarding ADSL/VDSL line interface circuits against lightning-induced surges entering via telephone wiring. IC Role / Device Role / Timing Role: Primary front-end protector on twisted-pair input, coordinated with GDT or secondary TVS stages. Use Value: Absorbs up to 1500 W of surge energy with 42.1 V clamping, keeping protected PHY ICs (e.g., TI TNETD7300) within safe operating area. | Use Scenario: Shielding hall-effect current sensing outputs in washing machine motor inverters from commutation spikes. IC Role / Device Role / Timing Role: Fast-response shunt clamp on low-voltage analog feedback path between shunt resistor and MCU ADC. Use Value: Responds in <1 ps to sub-100 ns spikes, limiting voltage to 42.1 V and enabling use of cost-effective 3.3 V or 5 V rail-to-rail op-amps. |
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 (42.8 V at 9.3 A) | Not suitable for high-energy automotive load dump; limited to lower-tier consumer or office equipment | Select SMAJ26CA only if surge energy is ≤400 W and board space constraints favor SMA package |
| 1.5KE27CA | Higher PPPM (1500 W), same VWM (27 V), but axial DO-201 package and higher RθJA (~50 °C/W on minimal pad) | Requires through-hole assembly and larger PCB area; less suitable for automated SMT lines | Choose 1.5KE27CA only for legacy through-hole designs or where thermal mass of axial leads improves transient dissipation |
Compared with SMAJ26CA and 1.5KE27CA, the SMCG26CA-E3/57T uniquely combines AEC-Q101 qualification, MSL Level 1 reflow compatibility, and DO-215AB footprint-making it the preferred choice for new automotive and high-reliability SMT designs requiring validated production readiness.
Availability
SMCG26CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom DSL line protection, and consumer appliance motor feedback circuits requiring stable component supply and full traceability.
Supply support for SMCG26CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series targets high-energy transient suppression in automotive, industrial, and telecom systems-designed to replace older SMA/DO-214AC packages with superior power density, AEC-Q101 compliance, and automated placement compatibility.
FAQ
What is the clamping voltage of SMCG26CA-E3/57T and how is it measured?
The SMCG26CA-E3/57T has a maximum clamping voltage (VC) of 42.1 V, measured at a peak pulse current (IPPM) of 35.6 A under the standardized 10/1000 μs double-exponential waveform. This value is guaranteed per the Vishay datasheet (Doc. #88457, Rev. 09-Jan-2024) and reflects worst-case voltage seen by downstream circuitry during surge events. The SMCG26CA-E3/57T maintains this clamping performance across its full operating temperature range.
Is SMCG26CA-E3/57T suitable for automotive applications?
Yes, the SMCG26CA-E3/57T is AEC-Q101 qualified per Vishay documentation, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its construction-including glass-passivated junction, MSL Level 1 reflow rating, and -55 °C to +150 °C operating range-meets stringent automotive reliability requirements. The SMCG26CA-E3/57T is explicitly listed in Vishay's AEC-Q101 qualified devices table.
What does the "CA" suffix indicate in SMCG26CA-E3/57T?
The "CA" suffix in SMCG26CA-E3/57T denotes a bidirectional transient voltage suppressor configuration, meaning the device provides symmetrical clamping in both polarities. Unlike unidirectional variants (e.g., SMCG26A), the SMCG26CA-E3/57T has no polarity marking and functions identically for positive or negative transients-ideal for AC lines, differential buses like CAN, or floating sensor outputs.
What is the thermal resistance of SMCG26CA-E3/57T and how does it affect layout?
The SMCG26CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this minimum pad area. Reducing pad size increases RθJA, risking thermal runaway during high-duty-cycle transients. The SMCG26CA-E3/57T datasheet specifies this condition as mandatory for achieving rated PPPM.
How does SMCG26CA-E3/57T differ from SMCG26A?
The SMCG26CA-E3/57T is bidirectional with symmetrical clamping and no polarity marking, whereas SMCG26A is unidirectional with a cathode band and forward voltage drop (VF = 3.5 V at 100 A). The SMCG26CA-E3/57T supports AC or floating-line protection without orientation concerns, while SMCG26A is restricted to DC circuits where polarity is fixed. Both share identical VWM (26 V), PPPM (1500 W), and package (SMCG/DO-215AB), but their electrical behavior differs fundamentally due to internal structure.
SMCG26CA-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:
- -
- 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-E3/57T FAQ
1.How can I place an order for SMCG26CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG26CA-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 SMCG26CA-E3/57T reliable?
The price and inventory of SMCG26CA-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 SMCG26CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG26CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG26CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG26CA-E3/57T?
SMCG26CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG26CA-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 SMCG26CA-E3/57T?
For technical support, including SMCG26CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG26CA-E3/57T requirements.
6.How does Aetrix verify that SMCG26CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG26CA-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 SMCG26CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG26CA-E3/57T?
All SMCG26CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG26CA-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 SMCG26CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG26CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG26CA-E3/57T Tags
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