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Vishay General Semiconductor - Diodes Division SMCG110CA-E3/9AT
- Part No.:
- SMCG110CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG110CA-E3/9AT.pdf
- Description:
- TVS DIODE 110VWM 177VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,332
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Product details
Overview
SMCG110CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 µs), 110 V stand-off voltage (VWM), and clamping voltage of 177 V at 8.5 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, industrial I/O ports, and telecom interface circuits against inductive switching transients and ESD.
For engineers reviewing the SMCG110CA-E3/9AT datasheet, SMCG110CA-E3/9AT pinout, SMCG110CA-E3/9AT application, or SMCG110CA-E3/9AT equivalent, this page delivers verified electrical parameters, polarity behavior, thermal resistance (RθJA = 75 °C/W), JEDEC-compliant packaging, and AEC-Q101 qualification status - all critical for automotive-grade circuit protection design and BOM validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 122–135 V (min/max) under 1 mA test current, and clamps transients to ≤177 V at 8.5 A IPPM. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), meeting ANSI/IEEE C62.35 standards for surge suppression.
The device uses the SMCG (DO-215AB) package with matte tin-plated leads, rated MSL Level 1 (260 °C reflow), and achieves thermal resistance of 75 °C/W (junction-to-ambient) on 8.0 mm × 8.0 mm copper pads - enabling robust thermal performance in space-constrained automotive and industrial PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - maximum continuous reverse operating voltage before clamping begins; defines safe working range for 12 V/24 V/48 V system signal lines. |
| VBR (min/max) | 122 V / 135 V at 1 mA - guaranteed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 177 V at 8.5 A - clamping voltage limits downstream IC stress during 10/1000 µs surges per IEC 61000-4-5. |
| PPPM | 1500 W - peak pulse power handling capacity supports high-energy transients in automotive load-dump scenarios. |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor interfaces. |
| TJ max | +150 °C - extended junction temperature rating enables deployment in under-hood automotive environments. |
| RθJA | 75 °C/W - thermal resistance measured on standard 8 mm × 8 mm pads; informs derating above 25 °C ambient. |
Pinout & Package
SMCG110CA-E3/9AT uses the SMCG (DO-215AB) surface-mount package: dual-leaded, gull-wing configuration, no polarity marking (bidirectional), RoHS-compliant matte tin plating, and UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional polarity; either lead may connect to protected line or ground - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring zero-failure reliability. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage over temperature and lifetime - critical for long-term field operation. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning - compatible with high-volume automated assembly. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving protection margin for sensitive receivers. |
| 1500 W peak pulse power | Withstands repeated 10/1000 µs surges per IEC 61000-4-5 Level 4 (4 kV line-to-ground), suitable for industrial Ethernet and CAN FD interfaces. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN bus and analog sensor outputs (e.g., pressure, temperature) in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground to shunt surge energy away from MCU ADC inputs and transceivers. Use Value: Clamps transients to ≤177 V while maintaining <1.0 µA leakage at 110 V - preserving signal fidelity and enabling direct connection to 12 V rail-sensing circuits. |
Use Scenario: Safeguarding RS-485/RS-232 communication ports on PLC modules subjected to lightning-induced surges and ground potential differences. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at connector entry point, operating in parallel with GDT or MOV secondary stages. Use Value: Delivers 1500 W peak power handling with 75 °C/W thermal resistance - allows sustained operation without derating in enclosed 70 °C industrial enclosures. |
| Telecom Interface Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY front-end circuits (e.g., PoE injectors) from ESD and induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Fast-response TVS placed differential-mode across data pairs and common-mode to ground to meet IEC 61000-4-2 Level 4 (15 kV air/8 kV contact). Use Value: Sub-1 ns response time and symmetrical VBR (122–135 V) ensure balanced clamping across differential signals - preventing skew and data corruption. |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V/12 V USB-C PD adapter outputs, guarding against feedback faults and regulator failure. IC Role / Device Role / Timing Role: Standoff-limited clamp that activates only above nominal output voltage, avoiding interference during normal regulation. Use Value: Precise 110 V VWM and tight 122–135 V VBR window enable reliable hold-off during 12 V transients while triggering decisively at fault levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110CA | Same VWM (110 V) and PPPM (400 W), but lower peak power (400 W vs. 1500 W); SMA package (DO-214AC), higher RθJA (~100 °C/W). | Targeted at lower-energy consumer electronics; insufficient for automotive load-dump or industrial 4 kV surge testing. | Select SMAJ110CA only for cost-sensitive, non-automotive designs where 400 W surge margin is adequate. |
| 1.5KE110CA | Higher PPPM (1500 W), axial-leaded DO-201 package; larger footprint, manual assembly required; VBR 122–135 V matches SMCG110CA-E3/9AT. | Used in legacy through-hole power supplies and industrial controls where SMT is not feasible or board space is unconstrained. | Choose 1.5KE110CA when retrofitting existing through-hole designs or when thermal mass from axial leads improves surge endurance in high-repetition scenarios. |
Compared with SMAJ110CA and 1.5KE110CA, SMCG110CA-E3/9AT uniquely combines AEC-Q101 qualification, DO-215AB surface-mount compatibility, and 1500 W surge capability in a low-profile package - making it the only option qualified for new automotive SMT designs requiring full IEC 61000-4-5 compliance without layout compromise.
Availability
SMCG110CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O port hardening, and telecom interface surge suppression requiring stable component supply, AEC-Q101 traceability, and 13-inch tape-and-reel delivery for high-volume SMT lines.
Supply support for SMCG110CA-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, precision, and automotive-grade qualification.
The SMCG series is engineered specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge immunity are mandatory.
FAQ
What is the breakdown voltage range for SMCG110CA-E3/9AT?
The SMCG110CA-E3/9AT has a guaranteed breakdown voltage (VBR) range of 122 V to 135 V at 1 mA test current, as specified in the Vishay datasheet (Document Number: 88457, Rev. 09-Jan-2024). This symmetric bidirectional range ensures consistent clamping behavior regardless of transient polarity, and directly supports its use in differential and AC-coupled protection schemes. The SMCG110CA-E3/9AT maintains this specification across its full operating temperature range.
Is SMCG110CA-E3/9AT suitable for automotive applications?
Yes, SMCG110CA-E3/9AT is AEC-Q101 qualified (explicitly noted in the mechanical data section), making it approved for automotive use in engine control, ADAS sensors, and body electronics. Its 1500 W peak pulse power, 110 V stand-off, and 177 V clamping voltage meet ISO 7637-2 and IEC 61000-4-5 requirements for load dump and surge immunity. The SMCG110CA-E3/9AT also features MSL Level 1 reflow compatibility and operates up to +150 °C junction temperature.
What does the "CA" suffix indicate in SMCG110CA-E3/9AT?
The "CA" suffix in SMCG110CA-E3/9AT denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions - essential for protecting AC signal lines, differential buses (e.g., CAN, RS-485), and ungrounded interfaces. Unlike unidirectional variants (e.g., SMCG110A), the SMCG110CA-E3/9AT has no cathode marking and exhibits identical VBR, VC, and leakage characteristics in either polarity.
What is the thermal resistance of SMCG110CA-E3/9AT, and how does it affect layout?
The SMCG110CA-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, as defined in the Vishay datasheet. This value requires designers to allocate sufficient copper area for heat dissipation during repetitive surge events; reducing pad size increases RθJA and risks thermal runaway. The SMCG110CA-E3/9AT's low RθJA enables effective operation without external heatsinks in most automotive and industrial PCBs.
How does SMCG110CA-E3/9AT compare to unidirectional SMCG110A in terms of circuit implementation?
SMCG110CA-E3/9AT replaces two unidirectional TVS diodes in back-to-back configuration with a single bidirectional device, simplifying layout, reducing component count, and eliminating polarity-dependent placement errors. While SMCG110A requires explicit cathode orientation toward the protected line's reference (e.g., ground), the SMCG110CA-E3/9AT functions identically regardless of lead orientation - ideal for differential signaling and floating grounds. Both share identical VWM (110 V) and PPPM (1500 W), but only SMCG110CA-E3/9AT supports true AC surge suppression.
SMCG110CA-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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- 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)
SMCG110CA-E3/9AT FAQ
1.How can I place an order for SMCG110CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG110CA-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 SMCG110CA-E3/9AT reliable?
The price and inventory of SMCG110CA-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 SMCG110CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG110CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG110CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG110CA-E3/9AT?
SMCG110CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG110CA-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 SMCG110CA-E3/9AT?
For technical support, including SMCG110CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG110CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG110CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG110CA-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 SMCG110CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG110CA-E3/9AT?
All SMCG110CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG110CA-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 SMCG110CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG110CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG110CA-E3/9AT Tags
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