2029L Datasheet, PDF (2/2 Pages) Littelfuse – SURFACE MOUNT PTC

RESETTABLE PTCs
SURFACE MOUNT PTC
2029L/3425L Series
Dimensions (Inches) Recommended Pad Layout (Inches)
All dimensions are nominal.
B
A MARKING
D
E
F
Average Time Current Curves
100
.025*
.120
10
.020-.035
.025
C
*0.010 for 2029L050
Series
A
B
CDE F
OBSOLETE ^{2029L .214 max. .314 max. .090 .120 .090 .380}
1
3425L .264 max. .374 max. .145 .180 .090 .420
RECOMMENDED REFLOW CONDITIONS:
(IR, Forced Air Convection, Vapor Phase)
Devices are not designed to be wave soldered.
0.1
PART 0.01
0.1
1
10
CURRENT IN AMPERES
100
ORDERING INFORMATION:
Catalog
Number
Ihold
Itrip
(A)
(A)
2029L030
0.30
0.6
2029L050
0.50
1.0
2029L075
0.75
1.5
2029S100
1.10
2.2
2029L100
1.10
2.2
2029L125
1.25
2.5
3425L150
1.50
3.0
3425L200
2.00
4.0
3425L250
2.50
5.0
2029L260
2.60
5.2
Vmax
(Vdc)
60
60
30
15
30
15
15
15
15
6.0
Maximum Time
To Trip
Resistance
Imax
Pd max. Current
Time
R IL
R AT
(A)
(W)
(A)
(Sec)
(Ω)
(Ω)
10
1.7
1.5
3.0
1.200
4.80
10
1.7
2.5
4.0
0.350
1.40
40
1.7
8.0
0.3
0.350
1.00
40
1.7
8.0
0.5
0.120
0.48
40
1.7
8.0
0.5
0.120
0.48
40
1.7
8.0
2.0
0.070
0.25
40
1.9
8.0
5.0
0.060
0.25
40
1.9
8.0
12.0
0.050
0.13
40
1.9
8.0
25.0
0.035
0.09
40
1.7
8.0
20.0
0.025
0.075
I_hold =
I_trip =
V_max =
I_max =
P_d =
R_IL =
R_AT =
Hold Current: maximum current device will sustain for 4 hours without tripping in 20°C still air.
Trip Current: minimum current at which the device will trip in 20°C still air.
Maximum voltage device can withstand without damage at rated current (I_max)
Maximum fault current device can withstand without damage at rated voltage (V_max)
Power dissipated from device when in the tripped state at 20°C still air.
Minimum resistance of device in initial (un-soldered) state.
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C for 20 sec.
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
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