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Vishay General Semiconductor - Diodes Division SMCG24CA-E3/57T
- Part No.:
- SMCG24CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG24CA-E3/57T.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,459
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Product details
Overview
SMCG24CA-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 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), 38.6 A peak pulse current (IPPM), and clamps to ≤38.9 V at rated surge - ideal for automotive sensor interface and industrial I/O line protection.
For engineers reviewing the SMCG24CA-E3/57T datasheet, SMCG24CA-E3/57T pinout, SMCG24CA-E3/57T application, or SMCG24CA-E3/57T equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, 1500 W 10/1000 µs surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical clamping in both directions due to its bidirectional CA construction. Its low incremental surge resistance and fast response time enable effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
Designed for surface-mount use, it meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 150 °C maximum junction temperature, and is qualified to AEC-Q101 for automotive under-hood and chassis applications - distinguishing it from non-automotive-grade TVS devices in the same family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - guaranteed symmetric breakdown threshold in both directions |
| VC @ IPPM | ≤38.9 V at 38.6 A - clamping voltage during full 1500 W 10/1000 µs surge event |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| TJ max | +150 °C - enables reliable operation in high-temperature automotive and industrial environments |
| Package | SMCG (DO-215AB) - low-profile, gull-wing SMT package with matte tin-plated leads |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMCG24CA-E3/57T uses the SMCG (DO-215AB) surface-mount package: a low-profile, gull-wing leaded case with no polarity marking (bidirectional). Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One of two symmetrical terminals; connects to protected line or ground reference depending on circuit topology |
| Cathode | Transient return path (bidirectional) | Second symmetrical terminal; no polarity marking - interchangeable with Anode in layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and improved humidity resistance vs. epoxy-passivated alternatives |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interfaces |
| MSL Level 1 rating | Enables single-pass reflow without moisture-related defects; no bake required prior to assembly |
| 1500 W 10/1000 µs rating | Provides margin against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surge events |
| Low RθJA (75 °C/W) | Supports sustained power dissipation up to 6.5 W on standard PCB copper pads |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing transients before they reach downstream ASIC or MCU inputs. Use Value: Maintains signal integrity under ISO 16750-2 load dump (up to 120 V) and IEC 61000-4-2 ESD (±15 kV air), enabled by 24 V VWM and 38.9 V VC. | Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring transients and relay coil flyback. IC Role / Device Role / Timing Role: Primary surge shunt across input terminals, diverting energy away from optocoupler or Schmitt-trigger input stages. Use Value: Withstands repeated 1500 W surges per IEC 61000-4-5 Level 4, supported by AEC-Q101 reliability and 150 °C TJ max for cabinet-mounted operation. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 or Ethernet PHY lines in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage protector on differential pair, paired with common-mode chokes and secondary GDTs for coordinated protection. Use Value: Symmetric bidirectional clamping ensures equal protection on both A/B lines without polarity concerns, critical for differential signaling integrity. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines or HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Low-inductance TVS placed directly at motor connector, clamping in <1 ns to prevent MCU reset or latch-up. Use Value: Fast response and 38.6 A IPPM handle repetitive 8.3 ms half-sine surges (IFSM = 200 A), validated per UL 497B for safety-critical appliances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM/VBR/PPPM specs but in SMA (DO-214AC) package; higher RθJA (100 °C/W) and lower surge margin on standard pads | Limited to lower-power or non-automotive applications due to lack of AEC-Q101 qualification | Select when footprint constraints favor SMA or cost sensitivity outweighs automotive qualification needs |
| 1.5KE24CA | Through-hole TO-218 package; higher IPPM (47.2 A) but slower response and no MSL rating | Suitable only for prototyping or legacy through-hole designs; not compatible with automated SMT lines | Choose only for manual assembly or where board-level mechanical robustness outweighs SMT efficiency |
Compared with SMAJ24CA and 1.5KE24CA, SMCG24CA-E3/57T delivers superior thermal performance in SMT layouts (RθJA = 75 °C/W), guaranteed AEC-Q101 compliance for automotive deployment, and optimized gull-wing geometry for high-yield reflow - making it the preferred choice for volume production of automotive and industrial control modules.
Availability
SMCG24CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for SMCG24CA-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 validation.
The SMCG series was engineered for high-reliability surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, low-profile packaging, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMCG24CA-E3/57T under full-rated surge conditions?
The SMCG24CA-E3/57T clamps to a maximum of 38.9 V when subjected to its full 1500 W peak pulse power (10/1000 µs waveform) at 38.6 A. This value is measured per standard test conditions on 8.0 mm × 8.0 mm copper pads and defines the upper voltage limit imposed on protected circuits during worst-case transients.
Is SMCG24CA-E3/57T suitable for automotive applications?
Yes, SMCG24CA-E3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis applications. Its construction - glass-passivated junction, MSL Level 1 reflow compatibility, and 150 °C maximum junction temperature - meets stringent automotive reliability requirements confirmed in Vishay's qualification report.
Does SMCG24CA-E3/57T have polarity markings on the package?
No, SMCG24CA-E3/57T has no polarity markings because it is a bidirectional device. The SMCG (DO-215AB) package features two identical terminals - Anode and Cathode - which function symmetrically. Layout orientation is non-critical, simplifying PCB design and automated placement.
What is the thermal resistance of SMCG24CA-E3/57T in typical mounting conditions?
The SMCG24CA-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 enables safe dissipation of its 6.5 W steady-state power rating in industrial and automotive ambient temperatures up to +105 °C.
Can SMCG24CA-E3/57T replace unidirectional TVS diodes like SMCG24A-E3/57T in existing designs?
No - SMCG24CA-E3/57T is bidirectional and lacks polarity, while SMCG24A-E3/57T is unidirectional with cathode band marking. Substitution requires circuit review: bidirectional use assumes symmetric line-to-line or line-to-ground protection, whereas unidirectional types require correct anode/cathode orientation relative to DC bias. Direct replacement may cause malfunction or reduced protection.
SMCG24CA-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- 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)
SMCG24CA-E3/57T FAQ
1.How can I place an order for SMCG24CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG24CA-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 SMCG24CA-E3/57T reliable?
The price and inventory of SMCG24CA-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 SMCG24CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG24CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG24CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG24CA-E3/57T?
SMCG24CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG24CA-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 SMCG24CA-E3/57T?
For technical support, including SMCG24CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG24CA-E3/57T requirements.
6.How does Aetrix verify that SMCG24CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG24CA-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 SMCG24CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG24CA-E3/57T?
All SMCG24CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG24CA-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 SMCG24CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG24CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG24CA-E3/57T Tags
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