SUBMINIATURE FUSES
UL 248-14, 125V, F
Time-Current Characteristic
Quick Acting (F)
Specifications
No. 303 / TR3
Packaging
000: Tape/Ammopack (1500 pcs.)
013: Long Leads - Bulk (200 pcs.)
042: Short Leads - Bulk (300 pcs.)
Standard
UL 248-14
CSA C22.2 No. 248.14
Materials
Base/Cap: Black Thermoplastic Base
Polyamide PA 6.6, UL 94V0
Brass, nickel-plated Cap
Approvals
UL Listed
CSA Certified
Round Pins: Copper alloy, tin plated
Operating Temperature
Features
-25 ºC to +70 ºC (consider de-rating)
Reduced PCB space requirements
Direct solderable or plug-in versions
Internationally approved
Low internal resistance
Climatic Category
-25 ºC/+70 ºC/21 days (EN 60068-1,-2-1,-2-2,-78)
Dimensions (mm)
Ø 6
Stock Conditions
+10 ºC to +60 ºC
relative humidity ≤ 75 % yearly average,
without dew, maximum value for 30 days-95 %
Shocksafe casing
Vibration resistant
Vibration Resistance
24 cycles at 15 min. each (EN 60068-6)
10 - 60 Hz at 0.75 mm amplitude
60 - 2000 Hz at 10 g acceleration
2,54
Ø 0,6
Lead Pull Strength
10 N (EN 60068-2-21)
Solderability
260 ºC, ≤ 3 s (Wave)
350 ºC, ≤ 1 s (Soldering Iron)
Holes in PCB
Long Leads (L=18.8mm)
Short Leads (L=4.3mm)
Soldering Heat Resistance
260 ºC, 10 s (IEC 60068-2-20)
Marking
Limits for Pre-arcing Time
, Voltage Rating, Current Rating, Approvals
Rated Current 2.0 x IN
2.0 x IN
< 5 s
Unit Weight
0.40 g (approx.)
50 mA ... 5.00 A
< 60 s
Permissible continuous operating current is ≤ 70 % at ambient temperature of 23 ºC (73.4 ºF).
Rated
Current
Amp
Code
Voltage
Rating
Breaking
Capacity
Voltage Drop Power Dissipation Melting Integral
Approvals
1.0 x IN
1.0 x IN
10 x IN
max. (mV)
max. (mW)
max. (A2s)
50mA
63mA
80mA
0050
0063
0080
125V
125V
125V
800
780
730
40
50
60
0.00007
0.00013
0.0002
•
•
•
•
•
•
100mA
125mA
160mA
0100
0125
0160
125V
125V
125V
700
650
600
70
0.0004
0.0022
0.0029
•
•
•
•
•
•
85
100
200mA
250mA
315mA
400mA
500mA
630mA
0200
0250
0315
0400
0500
0630
125V
125V
125V
125V
125V
125V
550
500
450
400
380
160
110
125
145
160
190
100
0.0042
0.0082
0.015
0.025
0.042
0.015
•
•
•
•
•
•
•
•
•
•
•
•
50A / 125 V AC
50-60Hz
cos ϕ = 1.0
50A / 63 V DC
800mA
1.00A
1.25A
0800
1100
1125
125V
125V
125V
155
150
145
125
155
185
0.025
0.039
0.059
•
•
•
•
•
•
1.60A
2.00A
2.50A
1160
1200
1250
125V
125V
125V
140
130
125
225
260
315
0.11
0.17
0.23
•
•
•
•
•
•
3.15A
4.00A
5.00A
1315
1400
1500
125V
125V
125V
120
110
105
380
440
525
0.45
•
•
•
•
•
•
1.0
1.5
Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand.
Order
Information
Qty.
Order-
Number
Series
303
Amp Code
Packaging
Specifications are subject
to change without notice
In our continuing strategy to deliver unparalleled circuit protection solutions,
technical expertise and application leadership, we proudly introduce the
WICKMANN Group and its products to the Littelfuse portfolio.
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