Littelfuse 2920L Series User Manual
2920l series, Poly-fuse, Resettable ptcs
POLY-FUSE
®
Resettable PTCs
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/12/13
Surface Mount > 2920L Series
The 2920L Series PTC provides surface mount overcurrent
protection for medium voltage (≤60V) applications where
resettable protection is desired.
Electrical Characteristics
Part Number
Marking
I
hold
(A)
I
trip
(A)
V
max
(Vdc)
I
max
(A)
P
d
typ.
(W)
Maximum Time
To Trip
Resistance
Agency
Approvals
Current
(A)
Time
(Sec.)
R
min
(Ω)
R
typ
(Ω)
R
1max
(Ω)
2920L030
LF030
0.30
0.60
60
10
1.50
1.50
3.00
1.200
3.000
4.800
X
X
2920L050
LF050
0.50
1.00
60
10
1.50
2.50
4.00
0.350
0.870
1.400
X
X
2920L075
LF075
0.75
1.50
30
40
1.50
8.00
0.30
0.350
0.670
1.000
X
X
2920L075/60
LF075-60
0.75
1.50
60
10
1.50
8.00
0.30
0.300
0.60
0.950
X
X
2920L100
LF100
1.10
2.20
33
40
1.50
8.00
0.50
0.120
0.270
0.410
X
X
2920L125
LF125
1.25
2.50
15
40
1.50
8.00
2.00
0.070
0.160
0.250
X
X
2920L150
LF150
1.50
3.00
33
40
1.50
8.00
2.00
0.080
0.150
0.230
X
X
2920L185
LF185
1.85
3.70
33
40
1.50
8.00
2.50
0.050
0.110
0.150
X
X
2920L200
LF200
2.00
4.00
15
40
1.50
8.00
5.00
0.050
0.090
0.125
X
X
2920L200/24
LF200-24
2.00
4.00
24
40
1.50
8.00
5.00
0.050
0.090
0.125
X
X
2920L250
LF250
2.50
5.00
15
40
1.50
8.00
10.00
0.035
0.060
0.085
X
X
2920L260
LF260
2.60
5.00
6
40
1.50
8.00
10.00
0.025
0.050
0.075
X
X
2920L300
LF300
3.00
5.00
6
40
1.50
8.00
20.00
0.015
0.033
0.048
X
X
2920L300/15
LF300-15
3.00
5.00
15
40
1.50
8.00
20.00
0.015
0.033
0.048
X
X
2920L500/16
LF500-16
5.00
10.00
16
40
2.0
20.00
5.00
0.005
-
0.025
X
X
Description
I
hold
= Hold current: maximum current device will pass without tripping in 20°C still air.
I
trip
= Trip current: minimum current at which the device will trip in 20°C still air.
V
max
= Maximum voltage device can withstand without damage at rated current (I max)
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 20°C still air.
R
min
= Minimum resistance of device in initial (un-soldered) state.
R
typ
= Typical resistance of device in initial (un-soldered) state.
R
1max
= 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 rating may result in damage and possible arcing and flame.
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E183209
R50119118
Features
Applications
• RoHS compliant, lead-free
and halogen-free
• Fast response to fault
currents
• High voltage
• Low-profile
• IEE1394 port protection
• Powered ethernet port
protection (IEEE 802.3 af)
• Automotive electronic
control module protection
• Low voltage telecom
equipment protection
2920L Series
RoHS