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.
Features
Agency Approvals
AGENCY
AGENCY FILE NUMBER
AMPERE RANGE
E10480
125MA - 5A
LR29862
125MA - 5A
Opening Time at 25OC
100%
4 hours, Minimum
200%
5 sec., Maximum
300%
0.2 sec., Maximum
t &MFNFOUDPWFSJOH
material is resistant
to industry standard
cleaning operations.
t 1SPEVDUJTNBSLFEPO
top surface with code to
allow amperage rating
identification without
testing.
t .PVOUJOHQBEBOE
electrical performance is
identical to Littelfuse 429
and 433 Series products.
t -PXQSPmMFGPSIFJHIU
sensitive applications.
Electrical Characteristics for Series
% of Ampere
Rating
t 1SPEVDUJTDPNQBUJCMF
with lead-free solders
and higher temperature
profiles.
t 'MBUUPQTVSGBDFGPSQJDL
and-place operations.
t "MMPZCBTFEFMFNFOU
construction provides
superior inrush withstand
characteristics (I2t) over
ceramic or glass based
1206 chip fuse products.
Applications
Secondary protection for space constrained applications:
t $FMMQIPOFT
t %7%QMBZFST
t #BUUFSZQBDLT
t )BSEEJTLESJWFT
t %JHJUBMDBNFSBT
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
0.059
63
0.048
63
0.039
63
0.031
32
0.024
32
0.020
50A @32 V AC/DC
32
0.014
32
0.011
Nominal
Melting
I2t (A2sec)
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
0.0691
x
x
254.28
0.0509
x
x
207.01
0.0518
x
x
169.18
0.0634
x
x
158.47
0.0792
x
x
98.65
0.0740
x
x
89.94
0.0899
x
x
85.71
0.1071
x
x
82.97
0.1244
x
x
80.73
0.1413
x
x
78.73
0.1575
x
x
76.99
0.1925
x
x
75.99
0.2280
x
x
74.50
0.2980
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: January 7, 2009
466 Series
466 Series
This series is 100% lead-free and meets the requirements
of the RoHS directive. New Halogen-Free 466 Series
fuses are available–to order use the “HF” suffix. See Part
Numbering section for additional information.
Mount
Fuses
IntroductionSurface
to Circuit
Protection
Thin Film > 1206 Size > Very Fast-ActingTransientology
> 466 Series
1 1/4A
1 1/2A
1 3/4A
2A
2 1/2A
3A
4A
5A
3/4A
1A
3/8A
1/2A
Average Time Current Curves
1/8A
1/4A
Temperature Rerating Curve
100
TIME IN SECONDS
10
1
0.1
Note:
0.01
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:
0.001
I = (0.75)(0.80)IRAT = (0.60)IRAT
0.1
1
10
CURRENT IN AMPERES
100
Soldering Parameters
Pre Heat
Pb – Free assembly
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 secs
TL
TS(max)
5°C/second max
TS(max) to TL - Ramp-up Rate
5°C/second max
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
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
466 Series
tL
Ramp-down
TS(min)
Preheat
tS
25
Peak Temperature (TP)
Wave Soldering
Critical Zone
TL to TP
Ramp-up
Average ramp up rate (Liquidus Temp
(TL) to peak
Reflow
tP
TP
Temperature
Reflow Condition
time to peak temperature
(t 25ºC to peak)
Time
260°C, 10 seconds max.
30
Revised: January 7, 2009
© 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
Materials
Body: Advanced High Temperature Substrate
Terminations: 100% Tin over Nickel over
Copper
Element Cover Coat: Conformal Coating
Operating
Temperature
– 55 C to 90 C.
Consult temperature rerating curve chart.
Thermal Shock
Withstands 5 cycles of –55OC to 125OC
Humidity
MIL-STD-202F, Method 103B, Condition D
O
Per MIL-STD-202F, Method 201A
Insulation Resistance
(After Opening)
Greater than 10,000 ohms
Resistance to
Soldering Heat
MIL-STD-202G, Method 210F,
Condition D
Part Marking System
Dimensions
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
.66
(.026")
Sn
.56
(.022")
3.18
(.125")
Cu
.58
(.023")
Coating
Sn
Sn
1.52
(.060")
3.18
(.125")
1.65
(.065")
1.52
(.060")
4.83
(.190")
2.03
(.080")
WAVE SOLDER
3.81
(.150")
1.52
(.060")
1.14
(.045")
2.03
(.080")
REFLOW SOLDER
Amp
Code
Marking
Code
.125
B
.200
C
.250
D
.375
E
.500
F
.750
G
001.
H
1.25
J
01.5
K
1.75
L
002.
N
02.5
O
003.
P
004.
S
005.
T
466 Series
O
Vibration
Part Numbering System
0466002.NRHF
SERIES
AMP Code
Refer to Amp Code column in the
Electrical Specifications table.
The dot is poisitioned before the Packaging Suffix with whole ratings and
within the numbering sequence for
fractional ratings. Example:
.125 amp product is 0466.125 NR HF
(2 amp product shown above).
QUANTITY Code
N = 5000 pcs
PACKAGING Code
R = Tape and Reel
HALOGEN FREE ITEM
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity &
Packaging Code
8mm Tape and Reel
EIA RS-481-2 (IEC 286, part 3)
5000
NR
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/466.html for current information.
31
Revised: January 7, 2009
466 Series