425 Datasheet, PDF (1/2 Pages) Littelfuse – SURFACE MOUNT FUSES

SURFACE MOUNT FUSES
No. 425 / X-SMQ
This product is not recommended
for new designs. Please refer to
Littelfuse No. 154T.
Dimensions (mm)
10
5
Pad Layout
4,24+0,05
2,13+0,05 4,24+0,05
Limits for Pre-arcing Time
Rated Current
500mA ... 5.00A
2.0 x I_N
1s ... 60s
UL 248-14, 125V, T
Holder with mounted fuse No. 420
Time-Current Characteristic
Time Lag (T)
Standard
UL 248-14
CSA C22.2 No. 248.14
Approvals
cULus Recognized
Features
Easy exchange of the fuse
For line or low voltage applications
Low voltage drop
Internationally approved
High pulse resistance
For reflow soldering
WebLinks
Further info see:
www.wickmanngroup.com
Further application info see Fuseology:
www.wickmann.com/download/fuseology.pdf
*)
Specifications
Packaging
010: Blister tape 38 cm reel (1500pcs.)
tape width 16 mm
Materials of the Holder
Housing: Holder plastics UL94 V-O
Terminals: Copper alloy, Ni+Sn plated,
lead free
Operating Temperature
-55ºC to +125ºC (consider de-rating)
Climatic Category
-55ºC/+125ºC/21 days (IEC 60068-2-1...3)
Stock Conditions
+10ºC to +60ºC
relative humidity ≤ 75% yearly average,
without dew, maximum value for 30 days-95%
Vibration Resistance
24 cycles at 15 min. each (IEC 60068-2-6)
10 - 60Hz at 0.75mm amplitude
60 - 2000Hz at 10g acceleration
Solderability
235ºC, 3 sec. (IEC 60068-2-58)
Soldering Heat Resistance
260ºC, 10 sec. (IEC 60068-2-58)
280°C, 5 sec.
Minimum Cross Section, Copper
Conducting path - 0.1mm²
Thickness - 0.035mm
Mounting
Avoid circuit traces below the fuse
Marking on fuse
T, Current Rating
Unit Weight
0.4g (approx.)
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
typ. (mV)
1.0 x I_N
typ. (mW)
500mA
0500
750mA
0750
125V
125V
50A / 125VAC
50-60Hz
430
300
230
270
1.00A
1100
125V
cos ϕ = 1.0
270
435
1.50A
1150
125V
50A / 80VDC
150
270
2.00A
1200
125V
165
380
2.50A
1250
125V
130
400
3.00A
1300
125V
125
450
3.50A
1350
4.00A
1400
125V
125V
35A / 125VAC
50-60Hz; cos ϕ = 1.0
50A / 80VDC
112
110
512
560
5.00A
1500
125V
100
620
*) Please note: The holder no. 425 is lead-free, but not the inserted fuse no. 420
Melting Integral
10 x I_N
min. (A²s) typ.
0.22
0.29
0.75
1.0
1.60
2.2
3.20
5.0
5.50
6.8
8.50
11.0
11.0
14.5
21.0
28.0
30.0
40.0
50.0
74.0
Approvals
•
•
•
•
•
•
•
•
•
•
Order
Information
Qty.
Order-
Series Amp Code Packaging
Number 425
Specifications are subject
to change without notice
WebSite
Europe Tel: [phone] Americas Tel: [phone]
Asia Tel: [phone]
China Tel: [phone]
050912 www.wickmanngroup.com E-mail: [e-mail] E-mail: [e-mail] E-mail: [e-mail] E-mail: [e-mail]