Surface Mount Fuses
Thin Film > 1206 Size > Very Fast-Acting > 466 Series
466 Series Fuse
Description
The 466 Series Fast-Acting Surface Mount Fuse (SMF)
is a small (1206 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 466 Series
fuses are available to order using the “HF” suffix. See Part
Numbering section for additional information.
Features
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
LR29862
AMPERE RANGE
125mA - 5A
125mA - 5A
with lead-free solders
and higher temperature
profiles
top surface with code to
allow amperage rating
identification without
testing
sensitive applications
and-place operations
is resistant to industry
standard cleaning
operations
electrical performance are
and 433 Series products
construction provides
superior inrush withstand
characteristics (I
2
t) over
ceramic or glass-based
1206 chip fuse products
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
300%
Opening Time at 25
O
C
4 hours, Minimum
5 sec., Maximum
0.2 sec., Maximum
Applications
Secondary protection for space constrained applications:
Electrical Specifications by Item
Ampere
Rating
(A)
0.125
0.200
0.250
0.375
0.500
0.750
1.00
1.25
1.50
1.75
2.00
2.50
3.00
4.00
5.00
Amp
Code
.125
.200
.250
.375
.500
.750
001.
1.25
01.5
1.75
002.
02.5
003.
004.
005.
Max
Nominal Cold
Interrupting
Voltage Rating
Resistance
Rating
(V)
(Ohms)
125
4.000
125
1.160
50A @125 V AC/
DC
125
0.710
125
0.350
63
0.248
63
0.111
63
0.076
50A @63 V AC/DC
63
63
0.048
63
63
0.031
32
0.024
32
0.020
50A @32 V AC/DC
32
0.014
32
0.011
Nominal
Melting
I
2
t (A
2
sec)
0.00040
0.00055
0.0010
0.0028
0.0060
0.0276
0.0423
0.0640
0.1103
0.1323
0.2326
0.3516
0.5760
1.024
1.600
Nom
Nom Power Agency Approvals
Voltage Drop Dissipation
(mV)
(W)
552.66
x
x
254.28
x
x
207
.01
0.0518
x
x
0.0634
x
x
158.47
x
x
0.0740
x
x
x
x
85.71
0.1071
x
x
0.1244
x
x
80.73
0.1413
x
x
78.73
0.1575
x
x
x
x
0.2280
x
x
74.50
x
x
73.75
0.3688
x
x
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/466.html for current information.
29
Revised: July 7, 2009
466 Series
466 Series
Surface Mount Fuses
Introduction to Circuit Protection
Transientology
Thin Film > 1206 Size > Very Fast-Acting > 466 Series
Temperature Rerating Curve
Average Time Current Curves
1 1/4A
1 1/2A
1 3/4A
1/4A
3/8A
1/2A
1/8A
3/4A
2A
2 1/2A
3A
4A
5A
10
100
10
TIME IN SECONDS
1
0.1
Note:
1. Rerating depicted in this curve is in addition to the standard rerating of 25% for
continuous operation.
0.01
For continuous operation at 70 degrees celsius, the fuse should be rerated as follows:
I = (0.75)(0.80)I
RAT
= (0.60)I
RAT
0.001
0.1
1
100
CURRENT IN AMPERES
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (Min to Max) (t
s
)
Average Ramp-up Rate (Liquidus Temp
(T
L
) to peak)
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – free assembly
150°C
60 – 180 seconds
5°C/second max.
5°C/second max.
217°C
60 – 150 seconds
250
+0/-5
1A
T
P
Ramp-up
t
P
Critical Zone
T
L
to T
P
Temperature
200°C
T
L
T
S(max)
Preheat
t
L
Ramp-down
T
S(min)
t
S
25
time to peak temperature
(t 25ºC to peak)
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
°C
20 – 40 seconds
5°C/second max.
8 minutes max.
260°C
Wave Soldering
260°C, 10 seconds max.
466 Series
30
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/466.html for current information.
Surface Mount Fuses
Thin Film > 1206 Size > Very Fast-Acting > 466 Series
Product Characteristics
Body:
Advanced High Temperature Substrate
Terminations:
Copper
Element Cover Coat:
Conformal Coating
O
– 55
O
C.
Consult temperature rerating curve chart.
Vibration
Insulation Resistance
(After Opening)
Resistance to
Soldering Heat
Greater than 10,000 ohms
Materials
Operating
Temperature
Thermal Shock
Humidity
Condition D
Withstands 5 cycles of –55
O
C to 125
O
C
Part Marking System
Amp
Code
.125
.200
0.660 ± 0.127
(0.026" ± 0.005")
Sn
0.584 ± 0.076
(0.023" ± 0.003")
Dimensions
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
Marking
Code
C
D
E
F
G
H
J
K
L
N
O
P
S
T
.250
.375
.500
.750
001.
1.25
01.5
1.75
002.
02.5
003.
3.175 ± 0.127
(0.125" ± 0.005")
Cu
Sn
Sn
0.559 ± 0.127
(0.022" ± 0.005")
Coating
1.524 ± 0.127
(0.060" ± 0.005")
3.175 ± 0.127
(0.125" ± 0.005")
1.65
(.065")
1.52
(.060")
4.83
(.190")
3.81
(.150")
1.52
(.060")
1.14
(.045")
004.
005.
2.03
(.080")
WAVE SOLDER
REFLOW SOLDER
2.03
(.080")
Part Numbering System
0466002.NRHF
SERIES
AMP Code
Refer to Amp Code column in the
-
aging Suffix with whole ratings and
within the numbering sequence for
fractional ratings.
QUANTITY Code
N = 5000 pcs
PACKAGING Code
R = Tape and Reel
Example:
.125 amp product is
0466.125 NR HF
(2 amp product shown
above).
‘HF’ SUFFIX
HALOGEN FREE ITEM
Packaging
Packaging Option
8mm Tape and Reel
Packaging Specification
Quantity
5000
Quantity &
Packaging Code
NR
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/466.html for current information.
31
466 Series
466 Series
B
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