0449001.MR Littelfuse Inc, 0449001.MR Datasheet - Page 2
![FUSE 125V TIME-LAG 1A SMD](/photos/29/13/291369/448_449_sml.jpg)
0449001.MR
Manufacturer Part Number
0449001.MR
Description
FUSE 125V TIME-LAG 1A SMD
Manufacturer
Littelfuse Inc
Series
NANO²® 449r
Specifications of 0449001.MR
Fuse Type
Slow Blow, Time Lag
Voltage - Rated
125VAC
Current
1A
Dc Cold Resistance
0.252 Ohm
Melting I²t
1.76
Package / Case
Non-Standard SMD
Size / Dimension
0.240" L x 0.106" W x 0.106" H (6.10mm x 2.69mm x 2.69mm)
Mounting Type
Holder/Surface Mount
Operating Temperature
-55°C ~ 125°C
Current Rating
1 Amp
Voltage Rating
125 Volts
Fuse Size / Group
Nano
Termination Style
SMD/SMT
Body Material
Ceramic
Product
Surface Mount Fuse
Interrupt Rating
50 Amps
Color
-
Voltage Rating Vac
125V
Voltage Rating Vdc
125V
Fuse Current
1A
Breaking Capacity
50A @ 125VAC/VDC
Blow Characteristic
Time Delay
Fuse Case Style
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Color
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
449001.MR
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
449 Series
Soldering Parameters
Temperature Rerating Curve
Reflow Condition
Pre Heat
Average ramp up rate (Liquidus Temp
(T
T
Reflow
Peak Temperature (T
Time within 5°C of actual peak
Temperature (t
Ramp-down Rate
Time 25°C to peak Temperature (T
Do not exceed
Wave Soldering Parameters
continuous operation.
S(max)
L
) to peak
to T
L
- Ramp-up Rate
- Temperature Min (T
- Temperature Max (T
- Time (Min to Max) (t
- Temperature (T
- Temperature (t
p
)
P
)
L
L
)
) (Liquidus)
Introduction to Circuit Protection
Introduction to Circuit Protection
s(min)
s(max)
s
)
P
)
)
)
Pb – Free assembly
150°C
200°C
60 – 120 secs
3°C/second max.
3°C/second max.
217°C
60 – 90 seconds
250
20 – 40 seconds
5°C/second max.
8 minutes max.
260°C
260°C Peak
Temperature,
3 seconds max.
NANO
+0/-5
Surface Mount Fuses
°C
2®
> Slo-Blo
Revised: January 7, 2009
54
®
Transientology
Average Time Current Curves
> 449 Series
T
T
1000
0.01
S(max)
100
S(min)
0.1
10
25
1
T
T
0
P
L
time to peak temperature
Please refer to www.littelfuse.com/series/449.html for current information.
(t 25ºC to peak)
CURRENT IN AMPERES
t
Preheat
S
1
Specifications are subject to change without notice.
Ramp-up
10
t
P
t
L
Time
© 2009 Littelfuse, Inc.
Critical Zone
Ramp-down
T
L
to T
100
P