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0.25A SMD PPTC Resettable Fuse 90V For Set-top Boxes / Resettable Fuse PTC
Quick Detail:
Description:
The Cooper Bussmann family of PolyTron™ resettable PPTCs is ideally
suitedfor protecting applications sensitive to high ambient
operating temperatures orsubject to frequent overcurrent
conditions.PPTCs operate as a positive temperature coefficient
device. High temperatures and excessive current will cause the
device resistance to increase until it limits the unsafe current
level.Upon reaching the design temperature/current limit, the PPTC
will effectively“open” the circuit to provide protection from the
overcurrent or elevated ambient temperature condition.Once the
fault is removed or the ambient temperature cools, the PPTC will
automatically “reset” and conduct safe current levels again,
allowing current to flow through the circuit.PPTCs are commonly
used in applications where constant uptime is required and/or in
circuits not easily accessible by a user or service
technician.Available in surface mount and radial packages, Cooper
Bussmann resettable PPTCs help improve the safety and reliability
of customer equipment worldwide.
Applications:
Specifications:
Part Number | Ih(A) | Vmax(V) | Imax(A) | Rmax(Ω) | Rmin(Ω) | Pdtyp(W) |
LT90-150 | 0.15 | 90 | 20 | 3.00 | 1.50 | 1.65 |
LT90-200 | 0.20 | 90 | 20 | 2.50 | 1.00 | 1.70 |
LT90-250 | 0.25 | 90 | 20 | 2.00 | 0.80 | 1.75 |
LT90-350 | 0.35 | 90 | 20 | 1.20 | 0.60 | 1.80 |
LT90-550 | 0.55 | 90 | 20 | 0.90 | 0.35 | 2.00 |
LT90-750 | 0.75 | 90 | 20 | 0.60 | 0.20 | 2.50 |
LT90-900 | 0.90 | 90 | 20 | 0.50 | 0.10 | 3.00 |
Competitive Advantage:
