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Vishay General Semiconductor - Diodes Division SMCG15CA-E3/9AT
- Part No.:
- SMCG15CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15CA-E3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,998
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Product details
Overview
SMCG15CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), and clamps to ≤24.4 V at 61.5 A (10/1000 µs waveform), making it suitable for automotive sensor signal line protection per AEC-Q101.
For engineers reviewing the SMCG15CA-E3/9AT datasheet, SMCG15CA-E3/9AT pinout, SMCG15CA-E3/9AT application, or SMCG15CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping TVS in bidirectional mode, with symmetrical avalanche breakdown behavior in both polarities. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), while low incremental surge resistance supports effective energy diversion during ESD or lightning-induced transients.
The SMCG15CA-E3/9AT is rated for TJ = –55 °C to +150 °C, features RθJA = 75 °C/W, and meets UL 497B recognition (QVGQ2) and AEC-Q101 qualification - confirming suitability for harsh automotive environments where reliability under thermal cycling and surge stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V at IT = 1 mA - guaranteed symmetric breakdown threshold in both directions |
| VC @ IPPM | 24.4 V at 61.5 A (10/1000 µs) - clamping voltage limiting downstream IC stress during surge events |
| PPPM | 1500 W - peak transient power handling capacity under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage ensuring minimal standby current impact on signal integrity |
| TJ max | +150 °C - extended junction temperature rating enabling use in under-hood automotive modules |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for standard reflow without dry pack |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded case with 8.0 mm × 8.0 mm thermal pad layout recommendation; polarity unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; one side of symmetrical avalanche junction | Provides bidirectional conduction path - no cathode marking required; terminals interchangeable |
| Cathode | Current exit terminal in forward bias; second side of symmetrical avalanche junction | Identical electrical role to Anode; device functions identically regardless of orientation in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance testing |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage across humidity and thermal stress |
| MSL Level 1 | Eliminates bake requirements prior to reflow; compatible with standard SMT assembly lines |
| UL 497B recognized (QVGQ2) | Meets safety standards for telecom and industrial signal-line protectors requiring third-party certification |
| Matte tin terminations | Solderable per J-STD-002/JESD22-B102; passes JESD201 Class 2 whisker test for long-term interconnect integrity |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector interface to shunt surge energy before reaching ASIC input pins. Use Value: Limits transient voltage to ≤24.4 V, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor signal conditioning ICs. | Use Scenario: Safeguarding CANH/CANL differential pair in industrial PLC communication modules exposed to EFT and surge per IEC 61000-4-4/4-5. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential bus lines to suppress common-mode surges without disrupting DC bias. Use Value: Maintains signal integrity by clamping transients within ±24.4 V while adding <1 pF junction capacitance at zero bias - negligible impact on 1 Mbps CAN timing. |
| Consumer Power Adapter Input | Telecom DSL Line Interface |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of wall-mounted AC/DC adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated protector placed after DC-DC converter output filter to absorb residual transients escaping primary-side MOVs. Use Value: Withstands 1500 W peak pulses and maintains 15 V nominal regulation margin - prevents brownout or reset of downstream microcontrollers. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines in central office and CPE equipment. IC Role / Device Role / Timing Role: Bidirectional TVS connected between tip/ring and ground to clamp longitudinal surges while preserving low-capacitance signal path. Use Value: Junction capacitance <1.5 pF at 0 V enables compliance with ITU-T G.992.1 spectral mask; clamping action preserves bit error rate under 1 kV/µs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Same VWM (15 V), lower PPPM (400 W), SMA package (DO-214AC), higher RθJA (~110 °C/W) | Limited to lower-energy transients; less effective in high-temperature ambient or high-duty-cycle surge environments | Select when board space is constrained and surge threat level is moderate (e.g., consumer USB ports) |
| 1.5KE15CA | Same VWM (15 V), higher PPPM (1500 W), axial DO-201 package, slower thermal response, not AEC-Q101 qualified | Requires through-hole mounting; unsuitable for automated SMT lines or automotive under-hood vibration environments | Select only for legacy through-hole designs or cost-sensitive industrial controls where AEC-Q101 is not mandated |
Compared with SMAJ15CA and 1.5KE15CA, the SMCG15CA-E3/9AT delivers identical clamping performance with superior thermal management (RθJA = 75 °C/W), AEC-Q101 validation, and MSL Level 1 compatibility - making it the preferred choice for new automotive and high-reliability SMT designs requiring zero rework risk and long-term field robustness.
Availability
SMCG15CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, and telecom line protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMCG15CA-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, efficiency, and application-specific optimization.
The SMCG series was developed to deliver high-power, low-profile TVS protection for automotive and industrial SMT applications - combining AEC-Q101 qualification, UL recognition, and optimized thermal pad layout for maximum surge energy dissipation in compact footprints.
FAQ
What is the clamping voltage of the SMCG15CA-E3/9AT under a 10/1000 µs surge?
The SMCG15CA-E3/9AT clamps to a maximum of 24.4 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 61.5 A. This value is measured per ANSI/IEEE C62.35 and verified on the recommended 8.0 mm × 8.0 mm copper pad layout. The clamping voltage ensures downstream ICs remain within safe operating limits during transient events.
Is the SMCG15CA-E3/9AT suitable for automotive applications?
Yes, the SMCG15CA-E3/9AT is AEC-Q101 qualified and UL 497B recognized (QVGQ2), with operating temperature range from –55 °C to +150 °C. Its glass-passivated junction, MSL Level 1 rating, and bidirectional symmetry make it appropriate for under-hood and chassis-mounted automotive modules such as body control units and sensor interfaces where reliability under thermal and surge stress is mandatory.
Does the SMCG15CA-E3/9AT have polarity markings?
No, the SMCG15CA-E3/9AT is a bidirectional TVS and carries no polarity marking on the package. Unlike unidirectional variants (e.g., SMCG15A), it has identical electrical behavior in both directions, allowing flexible PCB placement without orientation constraints. The SMCG (DO-215AB) case uses unmarked gull-wing leads for this purpose.
What is the maximum leakage current of the SMCG15CA-E3/9AT at its stand-off voltage?
The SMCG15CA-E3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 15 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage minimizes power loss and avoids signal distortion in high-impedance sensor or communication lines, supporting precision analog and high-speed digital interface protection.
What packaging format does the SMCG15CA-E3/9AT ship in?
The SMCG15CA-E3/9AT ships in 13-inch diameter plastic tape and reel packaging (package code 9AT), with 3500 units per reel. This format is optimized for high-volume automated SMT placement and complies with EIA-481 standards. The "E3" suffix indicates RoHS-compliant, industrial-grade construction with matte tin-plated leads.
SMCG15CA-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- 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)
SMCG15CA-E3/9AT FAQ
1.How can I place an order for SMCG15CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15CA-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 SMCG15CA-E3/9AT reliable?
The price and inventory of SMCG15CA-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 SMCG15CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG15CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15CA-E3/9AT?
SMCG15CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15CA-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 SMCG15CA-E3/9AT?
For technical support, including SMCG15CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG15CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG15CA-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 SMCG15CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG15CA-E3/9AT?
All SMCG15CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15CA-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 SMCG15CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG15CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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