Date: 5th Jun 2011
20A, 25A, and 30A rated SMD fuses in 3812
size
Bel Fuse has released a new square ceramic surface-mountable
SMM Series of 3812 size medium-blow fuses. SMD fuses with
rated current values up to 30A and with voltage ratings
up to 250VAC and 65VDC. RoHs-compliant, Pb-free and halogen
free fuses are suggested for overcurrent protection in a
broad spectrum of high-current applications in which a small
form factor device is specified to optimize board space.
Included among their most common usage is in the protection
of high-current circuits (primary or secondary) of larger
power supplies, as well as in the protection of (telecom)
backplane structures from overloads or short circuits, which
could disrupt an entire system. According to Bel Fuse the
SMM fuse can isolate a specific section or circuit, allowing
the remaining circuits to function normally.
Offered with 20A, 25A, and 30A ratings, Bel's SMM Series
features an operating temperature range of -55 degrees C
to +85 degrees C with proper derating. At 100% of ampere
rating, opening time is 4 hours minimum; 60 seconds maximum
at 200% of ampere rating. Fuses are manufactured of ceramic
bodies with matte tin plated brass caps. Parts are provided
on 13" reels, 2,000 per reel. For additional information,
visit http://belfuse.com/Data/Datasheets/SMM.pdf.
In production quantities, per-piece pricing for the square
ceramic surface-mountable SMM Series of 3812 size medium-blow
fuses ranges from $0.25 to $0.40 each. Samples are available
from stock. Average lead time is 6 -8 weeks ARO.
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