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Vishay General Semiconductor - Diodes Division SMCG15CA-E3/57T
- Part No.:
- SMCG15CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15CA-E3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,956
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Product details
Overview
SMCG15CA-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 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.
For engineers reviewing the SMCG15CA-E3/57T datasheet, SMCG15CA-E3/57T pinout, SMCG15CA-E3/57T application, or SMCG15CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, MSL Level 1 rating, low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction structure, responding within picoseconds to transients induced by inductive load switching or ESD events. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, with no polarity marking required on the package.
The SMCG15CA-E3/57T is rated for -55 °C to +150 °C operating junction temperature, exhibits 75 °C/W typical junction-to-ambient thermal resistance (RθJA), and maintains stable clamping performance under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | ≤24.4 V at 61.5 A (10/1000 µs) - Clamping voltage under full-rated surge; protects downstream ICs with defined voltage ceiling. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports high-energy transients common in automotive and industrial environments. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive and high-temperature industrial locations. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing leaded package with matte tin-plated terminals; meets UL 94 V-0 flammability and J-STD-020 MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reference node for bidirectional conduction | Terminal symmetric with cathode; no polarity marking required - enables orientation-agnostic PCB placement. |
| Cathode | Current exit terminal in forward bias; reference node for bidirectional conduction | Terminal symmetric with anode; bidirectional operation eliminates need for directional assembly verification. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring long-term field reliability. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for harsh-environment deployments. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without dry-pack requirements - simplifies manufacturing logistics. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection fidelity. |
| 1500 W PPPM (10/1000 µs) | Supports high-energy surge immunity per IEC 61000-4-5 Level 4 (4 kV line-to-line) when used with appropriate PCB layout. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from load dump and inductive kickback. IC Role / Device Role: Bidirectional clamping TVS placed directly at connector or IC input pins. Use Value: Maintains signal integrity by clamping transients to ≤24.4 V while surviving repeated 1500 W surges per AEC-Q101 stress profiles. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring transients and ground bounce. IC Role / Device Role: Primary overvoltage clamp on 24 V DC I/O lines interfacing with solenoids, relays, and motor drivers. Use Value: Enables reliable operation in factory automation environments where >1000 surges/year are typical, with <1 µA leakage preserving logic thresholds. |
| Telecom Power Interface | Consumer USB Port Protection |
Use Scenario: Secondary protection on 48 V telecom power feeds upstream of DC/DC converters and PMICs. IC Role / Device Role: High-power transient shunt positioned after primary MOV or gas discharge tube. Use Value: Absorbs residual energy from lightning-induced surges (IEC 61000-4-5) with 1500 W rating and low clamping voltage to prevent downstream converter latch-up. |
Use Scenario: ESD and cable discharge protection on USB 2.0 data lines and VBUS in portable audio/video devices. IC Role / Device Role: Bidirectional TVS placed adjacent to USB connector to suppress ±15 kV contact ESD (IEC 61000-4-2). Use Value: Provides sub-nanosecond response and <1 pF junction capacitance (typical for VWM = 15 V) to avoid signal distortion on 480 Mbps data lines. |
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) and bidirectional configuration, but lower PPPM (400 W) and DO-214AC (SMA) package. | Limited to lower-energy transients; unsuitable for automotive load dump or IEC 61000-4-5 Level 4 compliance. | Select SMAJ15CA only for cost-sensitive consumer applications with <500 W surge requirements and space-constrained layouts. |
| 1.5KE15CA | Higher PPPM (1500 W) but axial-leaded DO-201AD package; larger footprint and incompatible with automated SMT placement. | Requires manual or wave soldering; not viable for high-volume surface-mount production or AEC-Q101-compliant designs. | Choose 1.5KE15CA only for prototyping, legacy board refreshes, or through-hole-only assemblies where reflow compatibility is irrelevant. |
Compared with SMAJ15CA and 1.5KE15CA, the SMCG15CA-E3/57T uniquely combines AEC-Q101 qualification, DO-215AB SMT compatibility, and full 1500 W surge rating - enabling automotive-grade protection without layout or process compromise.
Availability
SMCG15CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply across multi-year production cycles.
Supply support for SMCG15CA-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 and application-specific performance.
The SMCG series was developed for high-reliability surface-mount transient suppression in automotive and industrial systems, prioritizing AEC-Q101 compliance, low-profile packaging, and consistent clamping behavior under repetitive surge stress.
FAQ
What is the clamping voltage of SMCG15CA-E3/57T under maximum rated surge current?
The SMCG15CA-E3/57T clamps to a maximum of 24.4 V when subjected to its rated peak pulse current of 61.5 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for protected circuits.
Is SMCG15CA-E3/57T suitable for automotive applications?
Yes, SMCG15CA-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 reflow compatibility, and validation against temperature cycling, HTRB, and ESD tests make it appropriate for ECUs, ADAS sensors, and body control modules.
Does SMCG15CA-E3/57T have polarity markings on the package?
No, SMCG15CA-E3/57T is a bidirectional TVS diode and carries no polarity marking on the SMCG (DO-215AB) package. The device functions identically regardless of orientation, eliminating assembly errors and simplifying automated placement in high-volume manufacturing.
What is the thermal resistance of SMCG15CA-E3/57T?
The SMCG15CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating steady-state power dissipation limits in thermally constrained designs.
How does the SMCG15CA-E3/57T differ from unidirectional variants like SMCG15A?
Unlike the unidirectional SMCG15A, the SMCG15CA-E3/57T provides symmetrical clamping in both directions with identical VBR, VC, and IPPM values. It lacks a cathode band marking and supports AC-coupled or floating signal line protection - essential for differential buses like CAN or LVDS where polarity reversal may occur.
SMCG15CA-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):
- 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-E3/57T FAQ
1.How can I place an order for SMCG15CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15CA-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 SMCG15CA-E3/57T reliable?
The price and inventory of SMCG15CA-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 SMCG15CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG15CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15CA-E3/57T?
SMCG15CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15CA-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 SMCG15CA-E3/57T?
For technical support, including SMCG15CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15CA-E3/57T requirements.
6.How does Aetrix verify that SMCG15CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG15CA-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 SMCG15CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG15CA-E3/57T?
All SMCG15CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15CA-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 SMCG15CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG15CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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