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Vishay General Semiconductor - Diodes Division SMCG15A-E3/57T
- Part No.:
- SMCG15A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG15A-E3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,228
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Product details
Overview
SMCG15A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) in DO-215AB (SMCG) package, designed for clamping inductive-switching and lightning-induced transients on power and signal lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 61.5 A peak pulse current (IPPM), and clamps to 24.4 V at rated surge. Used in automotive sensor protection and industrial DC power rails.
For engineers reviewing the SMCG15A-E3/57T datasheet, SMCG15A-E3/57T pinout, SMCG15A-E3/57T application, or SMCG15A-E3/57T equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), bidirectional variant compatibility (SMCG15CA), and real-world clamping behavior under standardized surge waveforms.
Technical Context
The SMCG15A-E3/57T employs a glass-passivated silicon avalanche junction optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking, and it operates within -55 °C to +150 °C junction temperature range with 6.5 W steady-state power dissipation at TA = 50 °C.
It meets J-STD-020 MSL Level 1 (260 °C peak reflow), passes JESD201 Class 2 whisker testing, and is RoHS-compliant per E3 suffix. The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits 1.0 µA max reverse leakage at VWM - critical for low-power sensor interface protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail. |
| VBR (min/max) | 16.7 V / 18.5 V at IT = 1 mA - defines tight breakdown window ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 24.4 V at 61.5 A - clamping voltage under 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - peak transient energy handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves battery life and signal integrity in high-impedance sensor inputs. |
| TJ max. | +150 °C - supports under-hood automotive and industrial environments without derating at full power. |
| RθJA | 75 °C/W - thermal resistance to ambient on standard 8 mm × 8 mm copper pads; informs PCB thermal layout requirements. |
Pinout & Package
Package: DO-215AB (SMCG) - low-profile, gull-wing surface-mount case with matte tin-plated leads solderable per J-STD-002. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line. | Enables unidirectional clamping from cathode to anode during positive transients; must be tied to ground or return path. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line. | Accepts transient energy from upstream line (e.g., 12 V rail or CAN bus), shunting surge to ground via anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - suitable for engine control and ADAS sensor modules. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh industrial enclosures. |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns - eliminates bake-out step in high-volume SMT lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil flyback), improving protection margin for downstream MOSFETs. |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed power supplies and EV charging infrastructure. |
Applications
| Automotive Sensor Protection | Industrial DC Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting 5 V or 12 V supply lines feeding ABS wheel speed sensors or cabin temperature sensors from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VCC and chassis ground, clamping transients within nanoseconds. Use Value: Maintains sensor uptime by limiting voltage to ≤24.4 V during 100 A/100 ms load dump, preventing IC latch-up or damage. |
Use Scenario: Safeguarding 24 V PLC I/O module power inputs against inductive kickback from solenoid drivers and relay coils. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at board edge, absorbing repetitive 1500 W surges without degradation. Use Value: Extends mean time between failures (MTBF) by eliminating field returns caused by transient-induced MOSFET gate oxide rupture. |
| Telecom Interface Line Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS on VCC and GND paths, coordinated with common-mode chokes. Use Value: Achieves IEC 61000-4-5 4 kV compliance while preserving signal integrity up to 10 Mbps due to low junction capacitance (~100 pF). |
Use Scenario: Adding secondary-level surge protection on USB VBUS line of smart home hubs after primary fuse and PTC. IC Role / Device Role / Timing Role: Final-clamp TVS with 15 V VWM ensures no interference with 5 V ±5% USB spec during normal operation. Use Value: Prevents USB controller IC damage from ESD events >15 kV (contact) while maintaining <1 µA standby leakage for battery-backed operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/57T | Same VWM (15 V) and PPPM (400 W), but lower power rating; SMA package (DO-214AC), RθJA = 110 °C/W. | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 3+ or automotive load dump. | Select when cost and board space constrain design and surge threat level is limited to human-body-model ESD. |
| SMCG15CA-E3/57T | Bidirectional variant with identical VWM (15 V), VBR (16.7–18.5 V), and PPPM (1500 W); no polarity marking. | Required for AC-coupled or differential signal lines (e.g., CAN FD, RS-232) where voltage polarity reverses. | Choose for symmetric clamping needs; same footprint and thermal performance, but lacks cathode band. |
Compared with SMAJ15A-E3/57T, SMCG15A-E3/57T delivers 3.75× higher surge power handling and superior thermal management for sustained transient loads; versus SMCG15CA-E3/57T, it provides polarity-aware clamping essential for DC power rail protection with defined ground reference.
Availability
SMCG15A-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC power supplies, telecom interface protection, and consumer USB port hardening requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG15A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The SMCG series targets high-energy transient suppression in automotive, industrial, and telecom systems, combining AEC-Q101 qualification, low-profile packaging, and consistent clamping across temperature and lifetime.
FAQ
What is the clamping voltage of SMCG15A-E3/57T under a 10/1000 µs surge?
The SMCG15A-E3/57T clamps to 24.4 V at its rated peak pulse current of 61.5 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects the maximum voltage seen by downstream circuitry during standardized surge testing - critical for verifying margin against IC absolute maximum ratings.
Is SMCG15A-E3/57T suitable for automotive applications?
Yes, SMCG15A-E3/57T carries AEC-Q101 qualification and is rated for operation from -55 °C to +150 °C junction temperature. Its glass-passivated junction, MSL Level 1 reflow compatibility, and 200 A 8.3 ms surge rating make it appropriate for under-hood and body-control module applications per ISO 7637-2 and ISO 16750-2 requirements.
How does the SMCG15A-E3/57T differ from the SMCG15CA-E3/57T?
The SMCG15A-E3/57T is unidirectional with a cathode band marking and conducts only in reverse bias, while SMCG15CA-E3/57T is bidirectional with no polarity marking and clamps symmetrically in both directions. Both share identical VWM (15 V), VBR (16.7–18.5 V), PPPM (1500 W), and DO-215AB packaging - enabling drop-in replacement where polarity is not constrained.
What is the maximum reverse leakage current for SMCG15A-E3/57T at 25 °C?
At 25 °C and rated stand-off voltage (VWM = 15 V), the SMCG15A-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal power loss in always-on sensor circuits and avoids false triggering in high-impedance monitoring nodes.
Does SMCG15A-E3/57T require special PCB layout considerations?
Yes - Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated PPPM and thermal performance. Reducing pad area increases RθJA and reduces surge capability; thermal vias under pads improve heat spreading. The gull-wing leads also require standard SMT stencil aperture design per IPC-7351.
SMCG15A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCG15A-E3/57T FAQ
1.How can I place an order for SMCG15A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG15A-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 SMCG15A-E3/57T reliable?
The price and inventory of SMCG15A-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 SMCG15A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG15A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG15A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG15A-E3/57T?
SMCG15A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG15A-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 SMCG15A-E3/57T?
For technical support, including SMCG15A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG15A-E3/57T requirements.
6.How does Aetrix verify that SMCG15A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG15A-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 SMCG15A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG15A-E3/57T?
All SMCG15A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG15A-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 SMCG15A-E3/57T part is unused and in its original packaging.
Return procedure for SMCG15A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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