- Account
- My Orders & Cart
- Lists
- myLists
- Quote Manager
- Account
- myDIGIKEY
- My Orders & Cart
- Lists
- myLists
- Quote Manager
- Logout
Settings
Fast Delivery
Free Shipping
Incoterms
Payment Types
Marketplace Product
% Littelfuse’
Wampum \ Answusmllumd
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/17/18
Surface Mount Fuses
Thin Film > 1206 Size > Very Fast-Acting > 466 Series
466 Series 1206 Fast-Acting 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.
Agency Approvals
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 0.125A - 5A
29862 0.125A - 5A
Features
Electrical Characteristics for Series
• Product is compatible
with lead-free solders
and higher temperature
profiles
• Product is marked on
top surface with code to
allow amperage rating
identification without
testing
• Low profile for height
sensitive applications
• Flat top surface for pick-
and-place operations
• Element-covering material
is resistant to industry
standard cleaning
operations
• Lead-free, Halogen-free
and RoHS compliant
% of Ampere
Rating Opening Time at 25OC
100% 4 hours, Minimum
200% 5 sec., Maximum
300% 0.2 sec., Maximum
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
0.125 .125 125
50A @ 125VAC/
VDC
3.925 0.00064 634.37 0.0793 x x
0.200 .200 125 1.10 0 0.00055 254.28 0.0509 x x
0.250 .250 125 0.691 0.0022 207.01 0.0518 x x
0.375 .375 125 0.351 0.0045 169.18 0.0634 x x
0.500 .500 63
50A @ 63VAC/VDC
0.248 0.0060 158.47 0.0792 x x
0.750 .750 63 0.106 0.0276 98.65 0.0740 x x
1. 0 0 0 01. 63 0.075 0.0423 79.97 0.0800 x x
1.25 1.25 63 0.057 0.0640 85.71 0.1071 x x
1.50 01. 5 63 0.046 0.1103 82.97 0.1244 x x
1.75 1.75 63 0.038 0.1835 80.73 0.1413 x x
2.00 002. 63 0.030 0.2326 78.73 0.1575 x x
2.50 02.5 32
50A @ 32VAC/VDC
0.023 0.3516 76.99 0.1925 x x
3.00 003. 32 0.019 0.5760 75.99 0.2280 x x
4.00 004. 32 0.014 1.764 74.50 0.2980 x x
5.00 005. 32 0.011 2.500 73.75 0.3688 x x
Electrical Specifications by Item
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
RoHS
Pb
• Cell phones
• Battery packs
• Digital cameras
• DVD players
• Hard disk drives
Secondary protection for space constrained applications:
Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/17/18
Surface Mount Fuses
Thin Film > 1206 Size > Very Fast-Acting > 466 Series
Average Time Current Curves
TIME IN SECONDS
CURRENT IN AMPERES
0.01
0.1
0.1
1
1
10
100
10
100
0.001
4A
3A
2 1/2
A
2A
1 3/4
A
1 1/2
A
1 1/4
A
1A
3/4A
1/2A
3/8A
1/4A
1/8A
5A
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 seconds
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)260+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
Temperature Re-rating Curve
Wave Soldering 260°C, 10 seconds max.
Note:
1. Re-rating depicted in this curve is in addition to the standard re-rating of 25% for
continuous operation.
Example:
For continuous operation at 70 degrees celsius, the fuse should be rerated as follows:
I = (0.75)(0.80)IRAT = (0.60)IRAT
2. The temperature derating curve represents the nominal conditions. For questions
about temperature derating curve, please consult Littelfuse technical support for
assistance.
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
Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military,
aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other
application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those
expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any
purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products
used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is
subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Information furnished is believed to be accurate and reliable.
However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not
designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
% Littelfuse’
Wampum \ Answusmllumd
OWSQANRHF
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/17/18
Surface Mount Fuses
Thin Film > 1206 Size > Very Fast-Acting > 466 Series
Dimensions
2.03
(.080")
2.03
(.080")
WAVE SOLDER REFLOW SOLDER
3.81
(.150")
1.52
(.060")
0.584 ± 0.076
(0.023" ± 0.003")
0.559 ± 0.127
(0.022" ± 0.005")
0.660 ± 0.127
(0.026" ± 0.005")
1.14
(.045")
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
3.175 ± 0.127
(0.125" ± 0.005")
3.175 ± 0.127
(0.125" ± 0.005")
4.83
(.190")
1.65
(.065")
1.52
(.060")
Sn
Sn
Sn
Cu
Coating
1.524 ± 0.127
(0.060" ± 0.005")
Packaging
Part Numbering System
Materials
Body: Advanced High Temperature Substrate
Terminations: 100% Tin over Nickel over
Copper
Element Cover Coat: Conformal Coating
Operating
Temperature – 55OC to 90OC.
Consult temperature re-rating curve chart.
Thermal Shock Withstands 5 cycles of –55OC to 125OC
Humidity MIL-STD-202, Method 103, Condition D
Vibration MIL-STD-202, Method 201
Insulation
Resistance
(After Opening)
Greater than 10,000 ohms
Resistance to
Soldering Heat MIL-STD-202, Method 210, Condition D
Product Characteristics
Part Marking System
Packaging Option Packaging Specification Quantity Quantity &
Packaging Code
8mm Tape and Reel EIA-481 Rev. D (IEC 60286, part 3) 5000 NR
Amp
Code Marking
Code
.125 B
.200 C
.250 D
.375 E
.500 F
.750 G
0 01. H
1.25 J
01.5 K
1.75 L
002. N
02.5 O
003. P
004. S
005. T
0466002.NRHF
SERIES
AMP Code
‘HF’ SUFFIX
Halogen-free
Refer to Amp Code column in the
Electrical Specifications table.
The dot is poisitioned before the Pack-
aging Suffix with whole ratings and
within the numbering sequence for
fractional ratings.
N = 5000 pcs
PACKAGING Code
R = Tape and Reel
Example
0.125 amp product is
0466.125NRHF
(2 amp product shown
above).
QUANTITY CODE
