The 0402 AccuGuard II thin-film fuses, constructed on alumina substrates, provide significant size and profile advantages over conventional fuse technologies. Their ultra-miniature chip-style package enables easy surface mounting when using automated assembly equipment. The devices' thin-film construction yields precise and predictable fusing characteristics. They're capable of ultrafast fusing reaction times of less than 1/10,000th of a second. The soldered-in fuses also provide for failsafe protection from overcurrent conditions without the danger of unexpected turn-on associated with self-resetting devices. They indicate when the circuit board is exposed to overvoltage or overcurrent conditions. And, they're rated at 32 V with a current rating of 0.25 A and a fusing current of 0.625 A. Resistance is 650 with a voltage drop of 220 mV. Operating from -55°C to 125°C, they come in 7-in. reels in 5000- and 20,000-piece quantities. They're compatible with high-speed pick-and-place equipment as well. In OEM quantities, the AccuGuard II fuses start at $0.10 each with a lead time of six to eight weeks.
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