Introduction to circuit protection, Axial lead & cartridge fuses, Transientology – Littelfuse 874 Series User Manual
Page 2: Wave parameter lead-free recommendation preheat, 5fnqfsbuvsf.jojnvn 100, 5fnqfsbuvsf.byjnvn 150, Byjnvn solder dwell time: 2-5 seconds
Revised: February 3, 2009
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
232
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Axial Lead & Cartridge Fuses
3.6 X 10 mm > Fast-Acting > 874 Series
874 Series
Please refer to www.littelfuse.com/series/874.html for current information.
Average Time Current Curves
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
4
0
50
60
70
80
90
100
110
120
130
1
4
0
150
160
170
180
190
200
210
220
230
2
4
0
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
Wave Parameter
Lead-Free Recommendation
Preheat:
%FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF
5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO
5FNQFSBUVSF.JOJNVN
100
°
$
5FNQFSBUVSF.BYJNVN
150
°
$
1SFIFBU5JNF
60-180 seconds
Solder Pot Temperature:
260
°
$.BYJNVN
Solder Dwell Time:
2-5 seconds
Recommended Hand-Solder Parameters:
4PMEFS*SPO5FNQFSBUVSF¡$¡$
)FBUJOH5JNFTFDPOETNBY
Note: These devices are not recommended for IR or
Convection Reflow process.
Recommended Process Parameters:
0.001
0.01
0.1
1
10
100
1000
0
0
0
1
0
0
1
0
1
1
1
.
0
CURRENT IN AMPS
TI
ME
IN S
E
C
O
N
D
S
8A
7A
6A
6.
5A
4.
5A
2A
1.
6A
1.
5A
1A
.80
0A
.6
00A
.750
A
.50
0A
.3
00
A
.2
50A
.2
00
A
.1
25
A
.100
A
10
A
5A
6.
3A
4A
2.5A
.400
A
3.
15A