272.250 Littelfuse, 272.250 Datasheet - Page 2

• Manufacturer Part Number: 272.250
• Description: Fuse 0.25A 125V Very Fast Acting 2-Pin Bulk
• Manufacturer: Littelfuse

272/273/274/278/279 Series
Temperature Rerating Curve
Soldering Parameters - Wave Soldering
300
280
260
2 0
220
200
180
160
1 0
120
100
80
60
20
0
ime (Seconds)
0
MICRO™ > Very Fast-Acting > 272/273/274/278/279 Series
Preheat ime
Introduction to Circuit Protection
Introduction to Circuit Protection
Dwell ime
Cooling ime
Radial Lead Fuses
Revised: January 7, 2009
132
Recommended Process Parameters:
Recommended Hand-Solder Parameters:
Note: These devices are not recommended for IR or
Convection Reflow process.
Preheat:
(Depends on Flux Activation Temperature)
Solder Pot Temperature:
Solder Dwell Time:
Transientology
Average Time Current Curves
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Temperature Minimum:
Temperature Maximum:
Preheat Time:
0.001
0.01
0.005
100
0.1
10
1
Wave Parameter
0.01
Please refer to www.littelfuse.com/series/272.html, /273.html, /274.html,
0.1
CURRENT IN AMPERES
Specifications are subject to change without notice.
(Typical Industry Recommendation)
100
150
60-180 seconds
260
2-5 seconds
Lead-Free Recommendation
1
°
°
°
/278.html or /279.html for current information.
C
C
C Maximum
10
© 2009 Littelfuse, Inc.
100