Axial lead and cartridge fuses, 977 series, Soldering parameters - wave soldering – Littelfuse 977 Series User Manual
Page 3: Product characteristics
3
© 2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Axial Lead and Cartridge Fuses
5x20mm > Time-Lag > 977 Series
977 Series
Please refer to www.littelfuse.com/series/977.html for current information.
977 Series
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)
T
emperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
Wave Parameter
Lead-Free Recommendation
Preheat:
%FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF
5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO
5FNQFSBUVSF.JOJNVN
°
C
5FNQFSBUVSF.BYJNVN
°
C
1SFIFBU5JNF
TFDPOET
Solder Pot Temperature:
°
$.BYJNVN
Solder Dwell Time:
2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
Recommended Process Parameters:
Materials
Body: Ceramic
Cap:/JDLFMoQMBUFE#SBTT
Leads:5JOoQMBUFE$PQQFS
Terminal Strength
.*-45%(
.FUIPE"
5FTU
$POEJUJPO"
Solderability
3FGFSFODF*&$4FDPOE&EJUJPO
"OOFY"
Product Marking
Cap 1:#SBOEMPHP
DVSSFOUBOEWPMUBHF
ratings
Cap 2:4FSJFTBOEBHFODZBQQSPWBM
NBSLJOHT
Product Characteristics
Operating Temperature
o$UP$
Thermal Shock
.*-45%(
.FUIPE(
5FTU
$POEJUJPO# DZDMFT
o$UP
$
Vibration
.*-45%( .FUIPE"
Humidity
.*-45%(
.FUIPE#
5FTU
$POEJUJPO" )JHI3) BOE
FMFWBUFEUFNQ $GPSIPVST
Salt Spray
.*-45%(
.FUIPE%
5FTU
Condition B