250S130 Datasheet, PDF (1/5 Pages) Littelfuse – POLYFUSE Resettable PTCs

POLYFUSE^® Resettable PTCs
Surface Mount > 250S Series
250S Series
Agency Approvals
AGENCY AGENCY FILE NUMBER
Pending
Description
The 250S High Voltage Radial device is a Polymer-based
PTC suitable to protect telephony equipment against
lightining and power cross strikes. The 250S Series is fully
compatible with telecommunications standards.
PRELIMINARY DATA SHEET: This product is scheduled for
release by end of 2008 and specifications may change.
Please refer to www.littelfuse.com/series/250S.html for
the current information.
Features
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Electrical Characteristics
Part Number
250S130
250S130–RA
250S130–RB
250S130–RC
I _hold
(A)
0.13
0.13
0.13
0.13
I _trip
V _max
I _max
(A) (V_int /V_op) (A)
0.26 250/60 3
0.26 250/60 3
0.26 250/60 3
0.26 250/60 3
P_d(Wty)p.
Time to Trip at 1A
Typical Maximum
(Sec.) (Sec.)
1.2
0.9
4.0
1.2
1.4
4.0
1.2
0.7
4.0
1.2
1.1
4.0
Resistance
R _min
(Ω)
4.0
6.5
9
7
R _max
(Ω)
13
10
13
11
R _1max
(Ω)
20
15
20
17
Agency
Approvals
–
–
–
–
I _hold = Hold current: maximum current device will pass without tripping in 23°C still air.
I _trip = Trip current: minimum current at which the device will trip in 23°C still air.
V_int = Maximum voltage the device can withstand without damage at rated current (I max)
V_op= The device regular operation voltage
I _max = Maximum fault current device can withstand without damage at rated voltage (V_max)
P _d = Power dissipated from device when in the tripped state at 23°C still air.
R _min = Minimum resistance of device in initial (un-soldered) state.
R _max = Maximum resistance of device in initial (un-soldered) state.
R _1max = Maximum resistance of device at 20°C measured one hour after tripping.
Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/250S.html for current information.
105
Revised: April 3, 2009
250S Series