Aluminum electrolytic capacitor for vehicle ECU is introduced in Japan, which has 4000 hours life at 125 ℃

Guimigong of Japan has released the "MHL series" of chip aluminum electrolytic capacitors, whose service life is twice longer than that of its previous products. It can work for 2000 or 4000 hours at + 125 ℃, extending the service life of the product to twice that of the previous "MVH series".
This product is for the purpose of automobile ECU (electronic control unit), especially for ECU equipped in engine room. According to guimigong, the capacitor used for ECU in engine room has strict requirements on high temperature resistance. When the vehicle is driving, it needs to work in high temperature environment due to the influence of engine radiation heat, and when it is parking, it needs to have low temperature resistance due to the influence of external low temperature. Specifically, it is required to have thermal stability in a large temperature range from - 40 ℃ to + 125 ℃.
Guimigong has launched MVH series aluminum electrolytic capacitors which can withstand high temperature of + 125 ℃, and this MHL series is its follow-up product. The main improvements are as follows: the service life at + 125 ℃ is extended to twice of the original; the ESR (equivalent series resistance) is lower than that of MVH series equivalent products; and the miniaturization is realized (the products with rated voltage of 16V and 35V are compared under the same electrostatic capacity).
The long life of new products is achieved by the following means. By using new electrolyte and sealing material with high sealing performance, the evaporation of electrolyte is restrained, and the thermal stability at high temperature is realized; the improvement and miniaturization of ESR are realized by using low impedance electrolytic paper and expanding the counter electrode area of aluminum electrode foil.
In MHL series, the model with rated voltage of 35V and static capacity of 100 μ f (size of 6.3mm × 8mm) will be supplied from June 2012, and other models are scheduled to be supplied from August 2012. It is planned to start mass production in guimicong Miyagi (a wholly-owned subsidiary of guimicong, Japan) from October 2012.