578244 Datasheet, PDF (1/6 Pages) Littelfuse – 2920L Series

POLYFUSE^® Resettable PTCs
Surface Mount > 2920L Series
2920L Series
Agency Approvals
AGENCY AGENCY FILE NUMBER
E183209
R50119118
Description
The 2920L Series PTC provides surface mount overcurrent
protection for medium voltage (≤60V) applications where
resettable protection is desired.
Features
• RoHS compliant, lead-free
and halogen-free
• Fast response to fault
currents
• High voltage
• Low-profile
Applications
• IEE1394 port protection
• Powered ethernet port
protection (IEEE 802.3 af)
• Automotive electronic
control module protection
• Low voltage telecom
equipment protection
Electrical Characteristics
Part Number
2920L030
2920L050
2920L075
2920L075/60
2920L100
2920L125
2920L150
2920L185
2920L200
2920L200/24
2920L250
2920L260
2920L300
2920L300/15
Maximum Time
Marking
I _hold
(A)
I _trip
(A)
V _max
(Vdc)
I _max
(A)
P_d
To Trip
max.
(W) ^{Current Time}
(A)
(Sec.)
LF030 0.30 0.60 60 10 1.50 1.50
3.00
LF050 0.50 1.00 60 10 1.50 2.50
4.00
LF075 0.75 1.50 30 40 1.50 8.00
0.30
LF075-60 0.75 1.50 60 10 1.50 8.00
0.30
LF100 1.10 2.20 33 40 1.50 8.00
0.50
LF125 1.25 2.50 15 40 1.50 8.00
2.00
LF150 1.50 3.00 33 40 1.50 8.00
2.00
LF185 1.85 3.70 33 40 1.50 8.00
2.50
LF200 2.00 4.00 15 40 1.50 8.00
5.00
LF200-24 2.00 4.00 24 40 1.50 8.00
5.00
LF250 2.50 5.00 15
40 1.50 8.00
10.00
LF260 2.60 5.00 6
40 1.50 8.00
10.00
LF300 3.00 5.00 6
40 1.50 8.00
20.00
LF300-15 3.00 5.00 15
40 1.50 8.00
20.00
Resistance
R
min
(Ω)
1.200
0.350
0.350
0.300
0.120
0.070
0.080
0.065
0.050
0.050
0.035
0.025
0.015
0.015
R
typ
(Ω)
3.000
0.870
0.670
0.60
0.270
0.160
0.150
0.110
0.090
0.090
0.060
0.050
0.033
0.033
R
1max
(Ω)
4.800
1.400
1.000
0.950
0.410
0.250
0.230
0.150
0.125
0.125
0.085
0.075
0.048
0.048
Agency
Approvals
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
I = Hold current: maximum current device will pass without tripping in 20°C still air.
hold
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 = Power dissipated from device when in the tripped state at 20°C still air.
d
R = Minimum resistance of device in initial (un-soldered) state.
min
R = Typical resistance of device in initial (un-soldered) state.
typ
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.
Effective September 15, 2009 onward, all 2920L PTC products will be manufactured Halogen Free (HF). Existing Non-Halogen Free 2920L PTC products will continue to be sold until
supplies are depleted. Effective January 1, 2010, all 2920L PTC product will be manufactured and sold as Halogen Free by default, and the “HF” part number suffix code will be discontinued
-- Refer to Part Ordering Number System and Packaging Options sections for additional information.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/2920L.html for current information.
51
Revised: December 2, 2009
2920L Series