Specications are subject to change without notice.

Surface Mount Fuses

Thin Film > 1206 Size > Very Fast-Acting > 466 Series

466 Series

Please refer to www.littelfuse.com/series/466.html for current information.

466 Series Fuse

Description

The 466 Series Fast-Acting Surface Mount Fuse (SMF)

is a small (1206 size) thin-lm 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” sufx. See Part

Numbering section for additional information.

Agency Approvals

AGENCY AGENCY FILE NUMBER AMPERE RANGE

E10480 125mA - 5A

LR29862 125mA - 5A

Features

Electrical Characteristics for Series

• Productiscompatible

with lead-free solders

and higher temperature

proles

• Productismarkedon

top surface with code to

allow amperage rating

identication without

testing

• Lowproleforheight

sensitive applications

• Flattopsurfaceforpick-

and-place operations

• Element-coveringmaterial

is resistant to industry

standard cleaning

operations

• Mountingpadand

electrical performance are

identicaltoLittelfuse429

and 433 Series products

• Alloy-basedelement

construction provides

superior inrush withstand

characteristics (I

t) over

ceramic or glass-based

1206 chip fuse products

% of Ampere

Rating

Opening Time at 25

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

t (A

sec)

Nom

Voltage Drop

(mV)

Nom Power

Dissipation

(W)

Agency Approvals

0.125 .125 125

50A @125 V AC/

4.000 0.00040 552.66 0.0691 x x

0.200 .200 125 1.160 0.00055 254.28 0.0509 x x

0.250 .250 125 0.710 0.0010 207.01 0.0518 x x

0.375 .375 125 0.350 0.0028 169.18 0.0634 x x

0.500 .500 63

50A @63 V AC/DC

0.248 0.0060 158.47 0.0792 x x

0.750 .750 63 0.111 0.0276 98.65 0.0740 x x

1.00 0 01. 63 0.076 0.0423 89.94 0.0899 x x

1.25 1.25 63 0.059 0.0640 85.71 0.1071 x x

1.50 01.5 63 0.048 0.1103 82.97 0.1244 x x

1.75 1.75 63 0.039 0.1323 80.73 0.1413 x x

2.00 002. 63 0.031 0.2326 78.73 0.1575 x x

2.50 02.5 32

50A @32 V AC/DC

0.024 0.3516 76.99 0.1925 x x

3.00 003. 32 0.020 0.5760 75.99 0.2280 x x

4.00 004. 32 0.014 1.024 74.50 0.2980 x x

5.00 005. 32 0.011 1.600 73.75 0.3688 x x

Electrical Specications by Item

1. Measured at 10% of rated current, 25ºC.

2. Measured at rated voltage.

• Cellphones

• Batterypacks

• Digitalcameras

• DVDplayers

• Harddiskdrives

Secondary protection for space constrained applications:

Revised: Jun 16, 2011

Introduction to Circuit Protection

Transientology

Specications are subject to change without notice.

Surface Mount Fuses

Thin Film > 1206 Size > Very Fast-Acting > 466 Series

466 Series

Please refer to www.littelfuse.com/series/466.html for current information.

Average Time Current Curves

TIME IN SECONDS

CURRENT IN AMPERES

0.01

0.1

100

10 100

0.001

2 1/2A

1 3/4A

1 1/2A

1 1/4A

3/4A

1/2A

3/8A

1/4A

1/8A

Reow Condition Pb – free assembly

Pre Heat

- Temperature Min (T

s(min)

) 150°C

- Temperature Max (T

s(max)

) 200°C

- Time (Min to Max) (t

) 60 – 180 seconds

Average Ramp-up Rate (Liquidus Temp

) to peak)

5°C/second max.

S(max)

to T

- Ramp-up Rate 5°C/second max.

Reow

- Temperature (T

) (Liquidus) 217°C

- Temperature (t

) 60 – 150 seconds

Peak Temperature (T

) 250

+0/-5

°C

Time within 5°C of actual peak

Temperature (t

)

20 – 40 seconds

Ramp-down Rate 5°C/second max.

Time 25°C to peak Temperature (T

) 8 minutes max.

Do not exceed 260°C

Soldering Parameters

Temperature Rerating Curve

Wave Soldering 260°C, 10 seconds max.

Note:

1. Rerating depicted in this curve is in addition to the standard rerating 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)I

RAT

= (0.60)I

RAT

2. The temperature derating curve represents the nominal conditions. For questions

abouttemperaturederatingcurve,pleaseconsultLittelfusetechnicalsupportfor

assistance.

Time

Temperature

S(max)

S(min)

time to peak temperature

(t 25ºC to peak)

Ramp-down

Ramp-up

Preheat

Critical Zone

to T

Specications are subject to change without notice.

Surface Mount Fuses

Thin Film > 1206 Size > Very Fast-Acting > 466 Series

466 Series

Please refer to www.littelfuse.com/series/466.html for current information.

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")

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

– 55

Cto90

Consult temperature rerating curve chart.

Thermal Shock Withstands 5 cycles of –55

C to 125

Humidity MIL-STD-202F,Method103B,ConditionD

Product Characteristics

Vibration 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

Packaging Option Packaging Specication 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

001. 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 ITEM

QUANTITY Code

Refer to Amp Code column in the

ElectricalSpecicationstable.

ThedotispoisitionedbeforethePack-

aging Sufx with whole ratings and

within the numbering sequence for

fractional ratings.

N = 5000 pcs

PACKAGING Code

R = Tape and Reel

Example:

.125 amp product is

0466.125 NR HF

(2 amp product shown

above).

Part #	0466.375NR
Description	FUSE BOARD MNT 375MA 125VAC/VDC
Category	FUSE
Availability	In Stock
Qty	10000

Qty	Price
1 - 596	$0.25151
597 - 1,499	$0.20007
1,500 - 2,915	$0.18863
2,916 - 4,421	$0.17530
4,422 +	$0.15624

Manufacturer	Available	Qty
Littelfuse Date Code: 1319	Freelance Stock: 5000 Ships Immediately
Littelfuse Date Code: 1315	Freelance Stock: 5000 Ships Immediately

0466.375NR

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Technical Document