Axial lead fuses, 3ab > time lag > 325sp series – Littelfuse 325SP Series User Manual
Page 2
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/13/13
Axial Lead Fuses
3AB > Time Lag > 325SP Series
Amp Code
Ampere
Rating
(A)
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal Melting
I
2
t (A
2
sec)
Agency Approvals
PS
E
012.
12
250
400A@250Vac
10KA@125Vac
600A@125Vdc
0.0067
129
x
x
x
x
x
015.
15
250
0.0050
245
x
x
x
x
x
020.
20
250
0.0034
575
x
x
x
x
x
Electrical Characteristic Specifications by Item
Average Time Current Curves
1000
100
10
1
0.1
0.01
10
CURRENT IN AMPERES
TIME IN SECONDS
100
1000
0.1
1
0.01
20.0A
15.0A
12.0A
Temperature Rerating Curve
Soldering Parameters - Wave Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
Wave Parameter
Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature)
(Typical Industry Recommendation)
Temperature Minimum:
100
°
C
Temperature Maximum:
150
°
C
Preheat Time:
60-180 seconds
Solder Pot Temperature:
260
°
C Maximum
Solder Dwell Time:
2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
Recommended Process Parameters: