YAGEO Group has expanded its automotive MLCC portfolio with VW80808-compliant X8R and X8G capacitors using flexible termination technology.
The new YAGEO KEMET-series MLCC ceramic capacitors target compact, high-reliability electronics exposed to elevated temperature, PCB bending, vibration, humidity, and electrical bias in electrified and safety-relevant vehicle systems.
Key features and benefits
- High-temperature operation: The new X8R and X8G MLCCs are specified for operation from −55°C to +150°C, supporting under-hood electronics and other thermally demanding automotive locations.
- Flexible termination: YAGEO Group’s FT-CAP construction is specified to withstand up to 5 mm of board flexure. The compliant termination helps limit stress transfer from a bending PCB into the brittle ceramic body, reducing the risk of flex-crack-related insulation-resistance degradation or short-circuit failure.
- Automotive qualification: The series is qualified to AEC-Q200 and stated to comply with VW80808 requirements. These qualifications make the range relevant where automotive OEM- or tier-specific passive-component requirements apply.
- High-voltage capability: The X8R family is available with voltage ratings up to 100 V, while X8G variants extend the stated capability to 630 V for higher-voltage filtering, snubbing, sensing, and power-distribution functions.
- Compact SMD implementation: The launch focuses on the 0603 EIA case size, equivalent to 1608 metric. The broader stated product-family information also identifies 0805, 1206, and 1210 case sizes.
- Environmental compliance: The product family is RoHS- and REACH-compliant according to the manufacturer.
Technical highlights
| Parameter | Manufacturer-stated information |
|---|---|
| Component type | Automotive-grade flexible-termination multilayer ceramic capacitor (MLCC) |
| New dielectric options | X8R and X8G |
| Operating temperature range | −55°C to +150°C |
| Voltage range | 6.3 V to 1000 V across the stated family; X8R up to 100 V and X8G up to 630 V for the new offerings |
| Capacitance range | 1000 pF to 6.8 μF |
| Case sizes stated for family | 0603, 0805, 1206, 1210 EIA |
| Termination | Flexible termination / FT-CAP construction |
| Qualification and compliance | AEC-Q200, VW80808, RoHS, REACH |
The choice between the two new dielectric classes matters at circuit level. X8R and X8G ceramic capacitor dielectrics are both intended for operation to 150°C, but their electrical stability and attainable capacitance differ: X8R is a Class II dielectric suited to higher capacitance values, while X8G is a high-temperature Class I dielectric intended where more stable capacitance characteristics are required.
The manufacturer also lists X7R and C0G dielectric options within the wider automotive flexible-termination portfolio. Exact capacitance, tolerance, voltage, dimensions, qualification documentation, and availability should therefore be confirmed for each orderable part number according to the manufacturer datasheet.
Typical applications
YAGEO Group identifies the new MLCCs for automotive electronics that combine high operating temperature with mechanical or environmental stress:
- Battery-management systems and on-board chargers
- DC/DC converters, inverter control electronics, and power-distribution networks
- High-voltage heater circuits
- Powertrain and transmission ECUs
- Electric-power-steering ECUs subject to vibration and board flexure
- ADAS controllers, including camera, radar, and lidar electronics
- Sensors, actuators, and body-control electronics
- Filtering and snubber positions in automotive power stages
Application fit
| Circuit location | Why the VW80808 series may fit |
|---|---|
| Local supply decoupling in ECUs | Compact MLCC construction with high-temperature capability and flex-crack mitigation |
| DC/DC converter input or output filtering | X8R options can provide higher capacitance in a small footprint; evaluate effective capacitance under DC bias |
| High-voltage sensing and filtering | X8G options extend to 630 V according to the manufacturer and offer a more stable Class I dielectric characteristic |
| Snubber or transient-control networks | High-voltage capability and mechanical robustness can be relevant, subject to pulse, AC, and thermal verification |
| PCB areas near connectors, heavy components, or mounting points | Flexible termination is particularly useful where mechanical board strain is expected |
Design-in notes for engineers
- Treat flexible termination as risk mitigation, not a substitute for sound PCB layout. Keep MLCCs away from board edges, mounting holes, connector insertion zones, and regions loaded by screws, heatsinks, or large inductors where practical.
- Validate the actual capacitance at operating conditions. For X8R parts, capacitance can change with DC bias, temperature, AC signal level, and ageing. Confirm the effective value rather than selecting from nominal capacitance alone.
- Use X8G deliberately. Its Class I characteristic makes it attractive where capacitance stability with temperature is important, but its lower permittivity generally limits capacitance compared with Class II X8R alternatives.
- Check the full electrical stress profile. Rated DC voltage alone does not establish suitability for a converter snubber or high-frequency filter; ripple current, AC voltage, self-heating, pulse duty cycle, resonance, and transient conditions should be evaluated against the specific datasheet.
- Review the termination and land-pattern guidance. Flexible termination improves tolerance to board strain, but pad geometry, solder volume, reflow profile, PCB thickness, and component orientation still influence mechanical reliability.
- Qualify against the vehicle environment. AEC-Q200 and VW80808 compliance support component-level selection, but final release should include application-specific testing for thermal cycling, vibration, humidity-bias stress, surge conditions, and assembly process compatibility.
- Plan sourcing at the exact part-number level. Automotive qualification, dielectric, voltage rating, termination option, reel format, and approval status can differ between variants. Purchasing teams should obtain current manufacturer documentation and authorized-channel availability before releasing a bill of materials.
Further reading
- MLCC and Ceramic Capacitors
- MLCC Selection Guide – Don’t Blindly Leave Component Choices to Tools
- Difference Between X8G, X8L and X8R Ceramic Capacitors
- Flexible MLCC Termination Guaranteed 5mm Bend Robustness
Source
This article is based on the YAGEO Group manufacturer press release and associated product information for the VW80808 automotive MLCC range. Engineers should consult the current manufacturer datasheet, qualification documentation, and application guidance for final component selection, validation, and design release.
