Keystone Electronicsí 3557-2 fuse holder minimizes the need for design engineers to design and test multiple fuse holders to accommodate Littelfuse ATO 257 Series, Bussman ATC Series, Littelfuse low-profile mini 897 series and equivalent style fuses. A standard footprint simplifies the board design process and allows for flexibility in designing for circuit protection. Keystone says the fuse holders reduce the amount of necessary production components and give design engineers the ability to design high- or low-profile fuses at the beginning of their design cycles.
NASA and Boeing developed a huge, carbon composite cryogenic fuel tank for deep space missions, and started testing it last month. The 18-ft cryotank will enable heavy-lift launch vehicles to send both humans and robots into deep space.
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