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Vishay General Semiconductor - Diodes Division SMCG30CA-E3/57T
- Part No.:
- SMCG30CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG30CA-E3/57T.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,704
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Product details
Overview
SMCG30CA-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 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage (VC) at 31.0 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with a 10/1000 μs waveform - deployed in automotive sensor signal lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the SMCG30CA-E3/57T datasheet, SMCG30CA-E3/57T pinout, SMCG30CA-E3/57T application, or SMCG30CA-E3/57T equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, low incremental surge resistance, and compatibility with automated SMT placement on standard 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCG30CA-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical breakdown behavior in both directions (VBR min/max = 33.3 V / 36.8 V at IT = 1.0 mA). Its thermal design targets TJ ≤ 150 °C with RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation under repetitive surge conditions when mounted per recommended pad layout.
It complies with ANSI/IEEE C62.35 for surge protector characterization and meets JESD201 Class 2 whisker resistance, UL 497B recognition (QVGQ2), and MSL Level 1 per J-STD-020 (260 °C peak reflow). The device exhibits <1.0 μA reverse leakage at VWM and supports fast response time inherent to avalanche-based TVS structures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal line bias margin. |
| VBR (min/max) | 33.3 V / 36.8 V at 1.0 mA - Bidirectional breakdown threshold range; ensures symmetric protection across polarity. |
| VC @ IPPM | 48.4 V at 31.0 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 1500 W - Peak surge power handling capability; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 events. |
| ID @ VWM | <1.0 μA - Ultra-low leakage at stand-off voltage; preserves signal integrity in high-impedance sensor interfaces. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables deployment in under-hood automotive and industrial environments. |
| Package | SMCG (DO-215AB) - Surface-mount gull-wing package with matte tin leads; compatible with J-STD-002 solderability and RoHS compliance (E3 suffix). |
Pinout & Package
SMCG30CA-E3/57T uses the SMCG (DO-215AB) surface-mount package: low-profile gull-wing leads, no polarity marking (bidirectional), matte tin-plated terminals, and UL 94 V-0 molding compound. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per datasheet Fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No functional polarity - either terminal serves as input/output; clamps voltage surges equally in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and body electronics. |
| Glass-passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives; critical for harsh-environment deployments. |
| MSL Level 1 rating | Enables single-reflow assembly without baking; supports high-throughput SMT lines with peak reflow up to 260 °C. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive kickback), improving protection margin for downstream ICs. |
| 1500 W PPPM (10/1000 μs) | Supports robust immunity against severe load-dump and lightning-induced surges in industrial and telecom infrastructure. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Port |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and 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 directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal fidelity under ±30 kV ESD (IEC 61000-4-2) and 12 V/24 V load dump (ISO 7637-2 Pulse 5a) while meeting AEC-Q101 requirements. |
Use Scenario: Safeguarding digital and analog I/O channels on programmable logic controller (PLC) modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary front-end TVS on isolated RS-485, 4–20 mA loop, or dry-contact inputs to prevent latch-up or damage in factory automation systems. Use Value: Withstands repeated 1 kV/500 A surges (IEC 61000-4-5) and operates continuously at -40 °C to +125 °C ambient, ensuring uptime in uncontrolled environments. |
| Telecom Interface Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from induced surges on outdoor or building-entry cabling. IC Role / Device Role / Timing Role: Secondary-level protection stage after gas discharge tube (GDT), limiting let-through voltage to sub-50 V levels for IC survival. Use Value: 48.4 V clamping voltage ensures safe operation of 3.3 V/5 V PHYs and 12 V PoE controllers; bidirectional symmetry matches AC-coupled data lines. |
Use Scenario: Input-stage surge suppression on universal AC-DC adapters used in smart home hubs, set-top boxes, and IoT gateways. IC Role / Device Role / Timing Role: First-line defense against differential-mode surges entering via AC mains or USB-C PD negotiation paths. Use Value: 1500 W PPPM and low leakage (<1 μA) prevent standby power loss while meeting UL 62368-1 and EN 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (48.4 V → 49.0 V); SMA package (DO-214AC), smaller footprint. | Limited to lower-energy transients (IEC 61000-4-2 only); unsuitable for ISO 7637-2 or high-repetition industrial surges. | Select SMAJ30CA only for space-constrained consumer designs where 400 W surge capacity suffices and AEC-Q101 is not required. |
| SMCJ30CA | Identical VWM (30 V), same DO-214AB package (larger than SMCG), higher PPPM (1500 W), identical VC (48.4 V), but not AEC-Q101 qualified (E3 suffix only). | Acceptable for industrial/commercial use but lacks automotive qualification; thermal resistance differs (RθJA = 40 °C/W vs. SMCG's 75 °C/W). | Choose SMCJ30CA for cost-sensitive non-automotive applications needing same power rating but less stringent reliability validation. |
Compared with SMAJ30CA and SMCJ30CA, the SMCG30CA-E3/57T uniquely combines AEC-Q101 qualification, DO-215AB compactness, and full 1500 W surge capability - making it the only option qualified for automotive front-end protection without derating or secondary components.
Availability
SMCG30CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O port hardening, and telecom interface surge suppression requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMCG30CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The SMCG series is part of Vishay's TRANSZORB® TVS portfolio, engineered for high-energy transient suppression in automotive, industrial, and communications systems where AEC-Q101 compliance and precise clamping are mandatory.
FAQ
What is the breakdown voltage range of the SMCG30CA-E3/57T?
The SMCG30CA-E3/57T has a bidirectional breakdown voltage range of 33.3 V to 36.8 V at a test current of 1.0 mA, as specified in the Vishay datasheet (Document Number: 88457, Rev. 09-Jan-2024). This range ensures consistent clamping behavior regardless of surge polarity and aligns with its 30 V stand-off voltage rating. The SMCG30CA-E3/57T maintains this specification across its qualified operating temperature range.
Is the SMCG30CA-E3/57T suitable for automotive applications?
Yes, the SMCG30CA-E3/57T is AEC-Q101 qualified (per note "(1)" in the datasheet's Thermal Characteristics section), making it suitable for automotive applications including engine control units, ADAS sensors, and body electronics. Its construction - glass-passivated junction, MSL Level 1 rating, and operation up to +150 °C junction temperature - satisfies automotive reliability requirements. The SMCG30CA-E3/57T is explicitly listed in Vishay's AEC-Q101-qualified product table.
What is the maximum clamping voltage of the SMCG30CA-E3/57T under surge conditions?
The SMCG30CA-E3/57T exhibits a maximum clamping voltage (VC) of 48.4 V at a peak pulse current (IPPM) of 31.0 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Electrical Characteristics table for the SMCG30A/CA family. The SMCG30CA-E3/57T delivers this clamping performance symmetrically in both directions due to its bidirectional design.
Does the SMCG30CA-E3/57T have polarity markings on the package?
No, the SMCG30CA-E3/57T does not feature polarity markings because it is a bidirectional TVS diode. As stated in the Mechanical Data section of the datasheet: "no marking on bidirectional types." Its symmetrical construction means either terminal may be connected to line or ground, simplifying PCB layout and eliminating orientation errors during automated placement. This applies specifically to the SMCG30CA-E3/57T and all CA-suffix variants.
What is the thermal resistance profile of the SMCG30CA-E3/57T?
The SMCG30CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W, measured on the recommended 0.31" × 0.31" copper pad layout. These values define its power derating behavior above 25 °C ambient and inform heatsinking decisions. The SMCG30CA-E3/57T's RθJA is higher than larger packages like SMCJ, reflecting its compact DO-215AB form factor.
SMCG30CA-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 31A
- 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)
SMCG30CA-E3/57T FAQ
1.How can I place an order for SMCG30CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG30CA-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 SMCG30CA-E3/57T reliable?
The price and inventory of SMCG30CA-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 SMCG30CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG30CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG30CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG30CA-E3/57T?
SMCG30CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG30CA-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 SMCG30CA-E3/57T?
For technical support, including SMCG30CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG30CA-E3/57T requirements.
6.How does Aetrix verify that SMCG30CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG30CA-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 SMCG30CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG30CA-E3/57T?
All SMCG30CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG30CA-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 SMCG30CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG30CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG30CA-E3/57T Tags
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