S
URFACE
M
OUNT
F
USES
This product is not recommended
for new designs. Please refer to
Littelfuse No. 452.
No. 420 SM
V,
UL 248-14, 125 V, T
T ime-Current
Time Lag (T)
Specifications
Packaging
000: Blister tape 18 cm reel (1000 pcs.)
001: Blister tape 33 cm reel (5000 pcs.)
Tape width 12 mm
Housing:
Element:
Terminals:
Ceramic
Wire
Copper alloy, silver plated
Characteristic
Standard
UL 248-14
CSA C22.2 No. 248.14
cULus Recognized
Materials
Approvals
Features
Dimensions (mm)
6,1 –0,2
max. 2,77
Temperature
Operating Temperature
Climatic Category
Stock Conditions
Heat resistant ceramic housing
For line or low voltage applications
Low voltage drop
Internationally approved
High pulse resistance
Also available as holder system 425 with
mounted fuse 420
-55 ºC to +125 ºC (consider de-rating)
-55 ºC/+125 ºC/21 days (IEC 60068-1,-2-1,-2-2,-2-78)
+10ºC to +60ºC
relative humidity
≤
75 % yearly average,
without dew, maximum value for 30 days-95 %
24 cycles at 15 min each (IEC 60068-2-6)
10 - 60 Hz at 0.75 mm amplitude
60 - 2000 Hz at 10 g acceleration
235 ºC, 3 s (IEC 60068-2-58)
260 ºC, 10 s (IEC 60068-2-58)
WebLinks
Further infos see:
www.wickmanngroup.com
V ibration Resistance
1,45 -0,2
1,45 -0,2
Further application infos see Fuseology:
Pad Layout
3,0
3,15 +0,05
www.wickmanngroup.com/download/
fuseology.pdf
Solderability
Soldering Heat Resistance
Minimum Cross Section, Copper
Conducting path - 0.175 mm
2
Thickness - 0.035 mm
Mounting
Marking
1,96 +0,05
1,96 +0,05
Avoid circuit traces below the fuse
T, Current Rating
0.23g (approx.)
Weight
Unit Weight
Limits for Pre-arcing Time
Rated Current
500 mA ... 5.00 A
2.0 x I
N
1 s ... 60 s
500mA
750mA
1.00A
1.50A
2.00A
2.50A
3.00A
3.50A
4.00A
5.00A
0500
0750
1100
1150
1200
1250
1300
1350
1400
1500
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
50 A / 125 V AC
50-60Hz
cos
ϕ
= 1.0
50 A / 80 V DC
35 A / 125 V AC
50-60 Hz; cos
ϕ
= 1.0
50 A / 80 V DC
210
300
270
150
165
130
125
112
110
100
120
270
435
270
380
400
450
512
560
620
0.30
0.75
1.60
3.20
5.50
8.50
11.0
21.0
30.0
50.0
0.39
1.0
2.2
5.0
6.8
11.0
14.5
28.0
40.0
74.0
Order
Information
050912
Qty.
Order-
Number
Series
420
Amp Code
Packaging
Specifications are subject
to change without notice
China
Tel: +86 21 6432 5146
E-mail: sales@wickmann.cn
WebSite
Europe
Tel: +49 2302 662-107
www.wickmanngroup.com E-mail: sales@wickmann.com
Americas
Tel: +1 404 699-7820
E-mail: service@wickmannusa.com
Asia
Tel: +852 26 14-1108
E-mail: sales@wickmann.com.hk
cURus
Permissible continuous operating current is
≤
70% at ambient temperature of 23ºC (73.4ºF).
Rated
Amp
Voltage
Breaking Voltage Drop Power Dissipation
Current
code
Rating
Capacity
1.0 x I
N
1.0 x I
N
typ. (mV)
typ. (mW)
Melting Integral
10 x I
N
min. (A
2
s) typ.
Approvals
•
•
•
•
•
•
•
•
•
•
S
URFACE
M
OUNT
F
USES
No. 420
I-t Characteristics
(Min-Max Limit)
Time (sec.)
050912
WebSite
Europe
Tel: +49 2302 662-107
www.wickmanngroup.com E-mail: sales@wickmann.com
00
0,0
10
0
,00
10
00
1,0
0
10
10
1
0.1
0.0
1
01
0.0
UL 248-14
Test value
1
1.5
2
3
4
5
6
7 8 9 10
15
I
Fault
/ I
Rated
Contact WICKMANN for individual I-t curves
Americas
Tel: +1 404 699-7820
E-mail: service@wickmannusa.com
Asia
Tel: +852 26 14-1108
E-mail: sales@wickmann.com.hk
China
Tel: +86 21 6432 5146
E-mail: sales@wickmann.cn
