Data Sheet

Type UMTS 250V UMF
3
/
4
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302 USA
+1
201.432.0463
[e-mail]
belfuse.com/circuit
-
protection
© 201
8
Bel
Fuse, Inc.
Rev.
UMTS
Nov
2018
Temperature Derating Curve
Average Time Current Curve
Soldering Parameters
Soldering Guidelines
Reflow Conditions Recommended
240
℃
, 30 sec. max.
NOT Recommended for Wave solder / Direct immersion / Hand Solder
IR Reflow Profile
Preheat & Soak
T
emperature min (Tsmin)
Temperature max (Tsmax)
Time (Tsmin to Tsmax) (ts)
150
℃
200
℃
60
-
120 seconds
Average ramp
-
up rate (Tsmax to Tp)
3
℃
/second max.
Liquidous temperature (TL)
Time at liquidous (tL)
217
℃
60
-
150 seconds
Peak temperature (Tp)
24
0
℃
max
Time (tp) within 5
℃
of the
specified
classification temperture (Tc)
30 seconds
Average ramp
-
down rate (Tp to Tsmax)
6
℃
/second max.
Time 25
℃
to peak temperature
8 minutes max.
Spe
cifications subject to
change without notice