FUSES
/ SICHERUNGEN
Non resettable fuses
Surface Mount
Fuses
Type MKF
quick-acting F
directly solderable on
printed circuit boards
Pre-arcing time in seconds t
s
MKF
In = 0.750 A (3/4)
In = 1 A
Marking
1:1
Multiple of rated current I
n
50
75
100
Solder pad
Standards
UL 248-14
Approvals
Pre-arcing time/current
characteristic (at T
a
23 °C)
Rated
current I
n
n · I
n
1 · I
n
t
≥
4h
2 · I
n
t
≤
5s
2,75 · I
n
t
≤
300 ms
4 · I
n
t
≤
30 ms
t
≤
60 ms
10 · I
n
t
≤
5 ms
t
≤
5 ms
I
n
≤
3
⁄
4
A
I
n
≥
1 A
t
≥
4 h t
≤
10 s
Order No.
/
Rated current I
n
Breaking
Rated voltage U
n
/
capacity
/
Ausschalt-
n
n
Voltage drop
/
at
/ bei
I
n
max.
Sustained
Pre-arcing
power dissipation l
2
t
at
/ bei
1 · I
n
max.
mW
32
74
59
77
95
128
155
240
300
363
435
490
540
625
875
1100
1320
1500
at
/ bei
10 · I
n
A
2
s
0,00022
0,0024
0,0061
0,012
0,046
0,09
0,11
0,25
0,72
0,91
1,3
1,7
2,6
4
8,5
31
48
92
Approvals
/
7010.9900.XX
63 mA / 125 V
7010.9901.XX 125 mA / 125 V
7010.9902.XX 250 mA / 125 V
7010.9903.XX 375 mA / 125 V
7010 9904.XX 500 mA / 125 V
7010.9905.XX 750 mA / 125 V
7010.9906.XX
1
A / 125 V
7010.9907.XX
1,5 A / 125 V
7010.9908.XX
2
A / 125 V
7010.9909.XX
2,5 A / 125 V
7010.9910.XX
3
A / 125 V
7010.9911.XX
3,5 A / 125 V
7010.9912.XX
4
A / 125 V
7010.9913.XX
5
A / 125 V
7010.9914.XX
7
A / 125 V
7010.9915.XX 10
A / 65 V
7010.9916.XX 12
A / 65 V
7010.9917.XX 15
A / 65 V
7010.9890.XX
Packaging index
300 A /
125 V AC/DC
p.f. /
cos = 1
L/R = 1 ms
300 A / 65 V AC/DC
p.f. /
cos = 1
L/R = 1 ms
mV
505
590
235
205
190
170
155
160
150
145
145
140
135
125
125
110
110
100
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Additional technical data and packaging see page 54
CSA
•
•
•
•
•
•
•
•
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UL
www.schurter.com
51
FUSES
/ SICHERUNGEN
Non resettable fuses
Additional technical data
Ambient temperature max. T
a
– 55 °C ÷ + 85 °C
172876, MSB, MKF, MKT
Solderability; Reflow-(infra-red and vapour phase) and wave soldering
235 °C / 2 sec. IEC 60068-2-58 /
test
Td
Soldering heat resistance
260 °C / 10 sec. IEC 60068-2-58 /
test
Td
Ceramics
Brass, tin-plated
Materials:
Housing
Terminals
Net weight %
/ Nettogewicht %
172876, MSB = 7 g
for
100
pieces
MKf, MKT = 14,5 g
for
100
pieces
Packaging
Types
172876
and
MSB
Tube or tape
Tube of 100 pieces
Taped and reeled 1500 pieces
Taped and reeled 5000 pieces
7010.XXXX.63
7010.XXXX.57
7010.XXXX.59
Types
MKF
Bag or tape
and
MKT
Bag of 100 pieces
Taped and reeled 1500 pieces
7010.XXXX.03
7010.XXXX.57
Blistertape and reel
according to IEC 60286-3
Types
/
Typen
Dimensions
in mm
A
180
172876
MSB
MKF
MKT
B
C
D
(max.) (max.)
4
12
12,4
18,4
Suitable surface mount fuseholder see page 177
54
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