Surface Mount Fuses
467 Series
Thin Film > 0603 Size > Very Fast-Acting > 467 Series
Please refer towww.littelfuse.com/series/467.htmlfor current information.
467 Series
467 Series Fuse
Description
Agency Approvals
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 250MA - 5A
LR29862 250MA - 5A
Electrical Characteristics for Series
Features
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free solders and higher
temperature profiles.
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materials provide
improved performance
in elevated ambient
temperature applications.
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with code to allow amp
rating identification
without testing.
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sensitive applications.
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and-place operations.
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material is resistant
to industry standard
cleaning operations.
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electrical performance is
identical to Littelfuse 431
and 434 Series products.
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construction provides
superior inrush withstand
characteristics (I2t) over
ceramic or glass based
% of Ampere 0603 fuse products.
Rating Opening Time at 25OC
100% 4 hours, Minimum
200% 5 sec., Maximum
300% 0.2 sec., Maximum Applications
The 467 Series Fast-Acting SMF is an ultra small (0603
size) thin-film device designed for secondary protection
of circuits used in space constrained applications such
as hand-held portable electronic devices. This series
is 100% lead-free and meets the requirements of the
RoHS directive. New Halogen-Free 467 Series fuses are
available–to order use the “HF” suffix. See Part Numbering
section for additional information..
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drives.
Secondary protection for space constrained applications:
Ampere
Rating
(A)
Amp
Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2sec)
Nom
Voltage
Drop
(mV)
Nom
Power
Dissipation
(W)
Agency Approvals
0.250 .250 32
50A @32V AC/DC
0.5450 0.0030 158.56 0.0396 x x
0.375 .375 32 0.2900 0.0053 128.03 0.0480 x x
0.500 .500 32 0.1870 0.0087 115.71 0.0579 x x
0.750 .750 32 0.1170 0.0171 107.33 0.0805 x x
1.00 001. 32 0.0710 0.0212 89.10 0.0891 x x
1.25 1.25 32
35A @32V AC/DC
0.0530 0.0518 84.32 0.1054 x x
1.50 01.5 32 0.0410 0.0766 81.14 0.1217 x x
1.75 1.75 32 0.0320 0.0903 78.75 0.1378 x x
2.00 002. 32 0.0300 0.1103 78.22 0.1564 x x
2.50 02.5 32 0.0220 0.1440 76.10 0.1903 x x
3.00 003. 32 0.0180 0.2403 75.04 0.2251 x x
3.50 03.5 32 0.0150 0.4306 74.25 0.2599 x x
4.00 004. 32 0.0130 0.5760 73.72 0.2949 x x
5.00 005. 32 0.0090 0.9000 72.71 0.3635 x x
Electrical Specifications by Item
1. Measured at 10% of rated current, 25ºC. 2. Measured at rated voltage.
Revised: January 7, 2009
IInttrroduccttiion tto Ciirrccuiitt Prrotteccttiion
Transientology
42 © 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
467 Series
Thin Film > 0603 Size > Very Fast-Acting > 467 Series
Please refer towww.littelfuse.com/series/467.htmlfor current information.
Average Time Current Curves
TIME IN SECONDS
CURRENT IN AMPERES
0.01
0.1
0.1
1
1
10
100
10 100
0.001
3.50 A
3.00 A
2.50 A
2.00 A
1.75 A
1.50 A
1.25 A
1.00 A
0.750 A
0.500 A
0.375 A
0.250 A
4.00 A
5.00 A
Temperature Rerating Curve
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min)) 150°C
- Temperature Max (Ts(max)) 200°C
- Time (Min to Max) (ts) 60 – 180 secs
Average ramp up rate (Liquidus Temp
(TL) to peak
5°C/second max
TS(max) to TL - Ramp-up Rate 5°C/second max
Reflow
- Temperature (TL) (Liquidus) 217°C
- Temperature (tL) 60 – 150 seconds
Peak Temperature (TP) 250+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (TP) 8 minutes Max.
Do not exceed 260°C
Soldering Parameters
Wave Soldering 260°C, 10 seconds max.
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
Example:
For continuous operation at 70 degrees celsius, the fuse should be deratedas follows:
I = (0.75)(0.80)IRAT = (0.60)IRAT
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP
Revised: January 7, 2009