451.75 Littelfuse Inc, 451.75 Datasheet - Page 3

• Manufacturer Part Number: 451.75
• Manufacturer: Littelfuse Inc
• Type: Chipr

Specifications of 451.75

• Acting: Very Fast
• Voltage Rating (vac): 125V
• Voltage Rating (vdc): 125V
• Current Rating: 0.75A
• Operating Temp Range: -55C to 125C
• Package Type: CSMD
• Mounting: Surface Mount
• Housing Material: Ceramic
• Operating Temperature Classification: Military
• Lead Free Status / RoHS Status: Not Compliant

© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Note:
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
Temperature Rerating Curve
Soldering Parameters
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)
s(min)
s(max)
s
)
P
)
)
)
Pb – Free assembly
150°C
200°C
60 – 120 secs
5°C/second max.
5°C/second max.
217°C
60 – 90 seconds
250
20 – 40 seconds
5°C/second max.
8 minutes max.
260°C
Temperature,
10 seconds max.
Surface Mount Fuses
NANO
+0/-5
°C
2®
> Very Fast-Acting > 451/453 Series
59
Average Time Current Curves
0.001
T
0.01
T
100
0.1
S(max)
10
S(min)
1
25
0.05 0.1
T
T
P
L
time to peak temperature
(t 25ºC to peak)
t
1
Preheat
S
CURRENT IN AMPERES
Ramp-up
10
t
100
t
P
L
Time
Critical Zone
Ramp-down
451/453 Series
T
L
to T
1000
P