Littelfuse 269 Series MICRO User Manual
Radial lead fuses
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Radial Lead Fuses
MICRO™ > Very Fast-Acting > 262/268/269 Series
Description
The 262/268/269 Series are high–reliability micro
fuses, with a 125V rating, very fast-acting type with
high breaking capacity. This series is listed under the
Department of Defense Quality Product List.
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
2mA - 5A
LR 29862
2mA - 5A
QPL
FM07A
2mA - 5A
Features
Electrical Characteristics
Applications
QPL
% of Ampere
Rating
Ampere Rating
Opening Time
100%
1/500–15
4 Hours, Min.
200%
1/500–3/10
5 Seconds, Max.
4/10-5
2 Seconds, Max.
Ampere
Rating
(A)
Amp Code
max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Agency Approvals
QPL
.002
.002
125
10,000 amperes at
125 VAC/VDC
2000
X
X
X
.005
.005
125
280
X
X
X
.010
.010
125
94.0
X
X
X
.015
.015
125
44.0
X
X
X
.031
.031
125
16.45
X
X
X
.050
.050
125
3.20
X
X
X
.062
.062
125
2.25
X
X
X
.100
.100
125
1.17
X
X
X
.125
.125
125
1.0
X
X
X
.200
.200
125
2.30
X
X
X
.250
.250
125
1.75
X
X
X
.300
.300
125
1.25
X
X
X
.400
.400
125
0.227
X
X
X
.500
.500
125
0.167
X
X
X
.600
.600
125
0.140
X
X
X
.700
.700
125
0.114
X
X
X
.750
.750
125
0.104
X
X
X
.800
.800
125
0.094
X
X
X
1.00
001.
125
0.100
X
X
X
01.5
01.5
125
0.063
X
X
X
2.00
002.
125
0.046
X
X
X
3.00
003.
125
0.034
X
X
X
4.00
004.
125
0.019
X
X
X
5.00
005.
125
0.018
X
X
X
Electrical Characteristics
Please contact Littelfuse for Average Time Current Curve.
262/268/269 Series, MICRO™ Very Fast-Acting Fuse (High-Reliability)
• Military grade available
• Available from very low
ampere of 2mA to 5A
• Available in plug-in and
radial leaded
Protection of electrical, electronic, and communication
equipment having printed circuit boards (PCBs) usable
in direct current (DC) and alternating current (AC) (up
to 400 hertz (Hz)) circuits capable of withstanding and
functioning in extreme conditions found in Spacecraft or
Military applications as described in MIL-PRF-23419.