TDK Corporation has announced the release of five new SMD multilayer varistors (MLVs). As an industry first, these components feature a reduced carbon (CO2) footprint while fulfilling demanding automotive qualification requirements. These parts are the first representatives of TDK’s new X-series, which is continually being expanded for automotive as well as for industrial and consumer applications. The X series satisfies both the growing demand for eco-friendly products, and the commercial requirement for cost-attractive products, while maintaining TDK’s high level of reliability and performance.
The first five parts are automotive qualified according to AEC-Q200, a feature which can be recognized by a “1” following the “X” in the part number. They are generally used to protect a vehicle's engine management system, electronic control units (ECUs), airbags, ABS, ESP, etc. against transient over-voltages on the battery lines resulting from events such as load dump and jump start. These components provide ESD protection up to 30 kV according to IEC 61000-4-2 and comply with automotive pulses according to ISO 7637-2/16750-2.
Available in four EIA package sizes (0603, 0805, 1206, and 1210), the new components support maximum RMS operating voltages of 14 V, 25 V, and 30 V respectively, with response times to voltage transients ranging from 10 ps to 500 ps. They handle surge currents from 5 A to 400 A for 8/20 µs pulses, while maintaining a leakage current of just 1 µA to 25 µA at the rated DC voltage and room temperature. Their operating temperature spans from -55 °C to +150 °C without derating, even at higher temperatures.
Key features and benefits of the new Multilayer Varistors
- Reliable ESD protection up to 30 kV according to IEC 61000-4-2
- Comply with automotive pulses according to ISO 7637-2/16750-2
- Load-dump and jump-start protection
- Low leakage current
- Qualified based on AEC-Q200 (X1-Series)
- No temperature derating up to +125 °C (X1-series up to +150 °C)
- High lifetime robustness
- Stable protection level
Key applications
- Automotive battery lines
- Engine management systems
- Electronic control units (ECUs)
- Airbag, ABS, ESP, and other similar systems
TDK Corporation is also providing simulation models for PSpice to evaluate these varistors.
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