0451.250MR [LITTELFUSE]

Surface Mount Fuses NANO2Â® > Very Fast-Acting > 451/453 Series; 表面贴装保险丝NANO2Â® \u003e特快熔断\u003e四百五十三分之四百五十一系列


型号：	0451.250MR
厂家：	LITTELFUSE
描述：	Surface Mount Fuses NANO2Â® > Very Fast-Acting > 451/453 Series 表面贴装保险丝NANO2Â® \u003e特快熔断\u003e四百五十三分之四百五十一系列
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Surface Mount Fuses

NANO^2®> Very Fast-Acting > 451/453 Series

451/453 Series Fuse

Description

The Nano²SMF Fuse is a very small, Wire-in-Air (WIA)

square shape surface mount fuse which is very suitable

for the secondary side circuit over-current protection

applications and is designed for PCB using surface mount

technology.

Features

•ꢀ Veryꢀfastꢀacting

•ꢀ Smallꢀsizeꢀ

•ꢀ Lowꢀtemperatureꢀ

de-rating

•ꢀ RoHSꢀcompliant

•ꢀ HalogenꢀFree

•ꢀ Wideꢀrangeꢀofꢀcurrentꢀ

rating available (62mA

to 15A)

Agency Approvals

AGENCY

AGENCY FILE NUMBER

AMPERE RANGE

6.3A - 15A

•ꢀ Wideꢀoperatingꢀ

temperature range

E10480

LR29862

62mA - 15A

Applications

NBK030205-E10480B

NBK101105-E184655

1A - 5A

•ꢀ NotebookꢀPC

•ꢀ Telecomꢀsystem

•ꢀ Wirelessꢀbasestation

•ꢀ Whiteꢀgoods

6.3A - 10A

•ꢀ LCD/PDPꢀTVꢀ

E10480

62mA - 5A

•ꢀ LCDꢀmonitor

•ꢀ LCD/PDPꢀpanel

•ꢀ LCDꢀbacklightꢀinverter

•ꢀ PortableꢀDVDꢀplayer

•ꢀ Powerꢀsupply

•ꢀ Networkingꢀ

•ꢀ Gameꢀconsole

•ꢀ OfﬁceꢀAutomationꢀ

Electrical Characteristics for Series

equipment

% of Ampere

Ampere Rating

Rating

•ꢀ Batteryꢀchargingꢀcircuitꢀ

Opening Time

protection

100%

1/16 –15

1/16 –10

12 –15

4 hours, Minimum

5 sec., Maximum

20 sec., Maximum

•ꢀ Industrialꢀequipment

•ꢀ Medicalꢀequipment

•ꢀ Automotive

•ꢀ PCꢀserver

200%

•ꢀ Coolingꢀfanꢀsystem

•ꢀ Storageꢀsystem

451/453 Series

Revised: January 10, 2012

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/451.html

or /453.html for current information.

Surface Mount Fuses

Introduction to Circuit Protection

NANO^2®> Very Fast-Acting > 451/453 Series

Transientology

Electrical Speciﬁcations by Item

Max

Voltage

Rating

(V)

Agency Approvals

Ampere

Rating

(A)

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

Amp

Code

Interrupting

Rating

I²t (A²sec)

0.062

0.080

0.100

0.125

0.160

0.200

0.250

0.315

0.375

0.400

0.500

0.630

0.750

0.800

1.00

.062

.080

.100

.125

.160

.200

.250

.315

.375

.400

.500

.630

.750

.800

001.

1.25

01.5

01.6

002.

02.5

003.

3.15

03.5

004.

005.

06.3

007.

008.

125

5.5000

4.0500

3.1000

1.7000

1.2157

0.8372

0.5765

0.3918

0.6100

0.5600

0.4200

0.3050

0.2450

0.2120

0.1530

0.0780

0.0630

0.0580

0.0367

0.0286

0.0227

0.0215

0.0200

0.0160

0.0125

0.0096

0.0090

0.0077

0.00019

0.00033

0.00138

0.00286

0.0048

0.0089

0.0158

0.0311

0.0425

0.0484

0.0795

0.143

50ꢀamperesꢀ@125VAC/VDCꢀ

300ꢀamperesꢀ@32VDC

0.185

0.271

PSE: 100 amperes

0.459

@100VAC

1.25

0.664

1.50

0.853

1.60

1.060

2.00

0.530

2.50

1.029

3.00

1.650

3.15

1.920

3.50

2.469

4.00

3.152

5.00

5.566

6.30

9.170

7.00

10.32

8.00

20.23

35ꢀamperesꢀ@125ꢀVAC/

50ꢀamperesꢀ@125ꢀVDC

10.0

010.

125

300ꢀamperesꢀ@32ꢀVDC

0.0056

26.46

PSE: 100 amperes

@100VAC

12.0

15.0

012.

015.

0.0049

0.0037

47.97

97.82

50ꢀamperesꢀ@65ꢀVAC/VDC

300ꢀamperesꢀ@24ꢀVDC

Notes:

- l²t calculated at 8ms.

- Resistance is measured at 10% of rated current, 25ºC

451/453 Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/451.html

or /453.html for current information.

Surface Mount Fuses

NANO^2®> Very Fast-Acting > 451/453 Series

Temperature Rerating Curve

Average Time Current Curves

100

0.1

0.01

Note:

1.ꢀDeratingꢀdepictedꢀinꢀthisꢀcurveꢀisꢀinꢀadditionꢀtoꢀtheꢀstandardꢀderatingꢀofꢀ25%ꢀforꢀ

continuous operation.

0.001

0.05 0.1

100

1000

CURRENT IN AMPERES

Soldering Parameters

t_P

Reﬂow Condition

- Temperature Min (T

Pb – Free assembly

T_P

Critical Zone

Ramp-up

T_Lto T_P

)

150°C

s(min)

T_L

Pre Heat - Temperature Max (T

)

200°C

t_L

s(max)

T_S(max)

- Time (Min to Max) (t_s)

60 – 120 secs

Ramp-down

Average ramp up rate (Liquidus Temp

(T_L) to peak

Preheat

5°C/second max.

T_S(min)

t_S

T_S(max)to T_L- Ramp-up Rate

5°C/second max.

- Temperature (T_L) (Liquidus) 217°C

Reﬂow

time to peak temperature

(t 25ºC to peak)

- Temperature (t_L)

60 – 90 seconds

250^+0/-5°C

Time

Peak Temperature (T_P)

Time within 5°C of actual peak

Temperature (t_p)

20 – 40 seconds

Ramp-down Rate

5°C/second max.

8 minutes max.

260°C

Time 25°C to peak Temperature (T_P)

Do not exceed

260°CꢀPeakꢀ

Temperature,

10 seconds max.

Wave Soldering Parameters

451/453 Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/451.html

or /453.html for current information.

Surface Mount Fuses

Introduction to Circuit Protection

NANO^2®> Very Fast-Acting > 451/453 Series

Transientology

Product Characteristics

Body: Ceramic

Terminations:

Gold-PlatedꢀCapsꢀ(forꢀ451ꢀRoHS/HFꢀseries)

SnPbꢀPlatedꢀCapsꢀ(forꢀ451ꢀNon-RoHSꢀseries)

MIL-STD-202,ꢀMethodꢀ107,ꢀꢀTestꢀ

Condition B, 5 cycles, -65°C /

+125°C, 15 minutes @ each

extreme

Thermal Shock

Materials

Silver-platedꢀCapsꢀ(forꢀ451ꢀRoHSꢀbelowꢀ

160mAꢀRatingꢀ&ꢀ453ꢀSeries)

MIL-STD-202,ꢀMethodꢀ213,ꢀTestꢀI:ꢀ

Deenergized.ꢀꢀ100G’sꢀpkꢀamplitude,ꢀ

sawtooth wave 6ms duration, 3

cyclesꢀXYZ+xyzꢀ=ꢀ18ꢀshocks

Mechanical Shock

Vibration

Product Marking

Brand,ꢀAmpereꢀRating

Operating

MIL-STD-202,ꢀMethodꢀ201:ꢀ0.03”ꢀ

amplitude,ꢀ10-55ꢀHzꢀinꢀ1ꢀmin.ꢀꢀ2hrsꢀ

eachꢀXYZ=6hrs

-55°C to 125°C

Temperature

Moisture Sensitivity

Level

Levelꢀ1,ꢀJ-STD-020C

MIL-STD-202,ꢀMethodꢀ106,ꢀ10ꢀ

cycles

Moisture Resistance

Salt Spray

Solderability

MIL-STD-202,ꢀMethodꢀ208

Insulation

Resistance

(after Opening)

MIL-STD-202,ꢀMethodꢀ101,ꢀTestꢀ

Condition B (48hrs)

MIL-STD-202,ꢀMethodꢀ302,ꢀTestꢀ

Condition A (10,000 ohms minimum)

Resistance to Soldering

Heat

MIL-STD-202,ꢀMethodꢀ210,ꢀTestꢀ

condition B (10 sec at 260°C)

Dimensions

Part Numbering System

6.10 .20

(.240")

2.69 .25

(.106")

0451 001. M R L

2.69 .25

(.106")

SERIES

7 A

451ꢀ=ꢀGoldꢀ/ꢀSnPbꢀ/ꢀSilverꢀꢀPlatedꢀCaps

453ꢀ=ꢀSilverꢀPlatedꢀCaps

1.45

(.057")

AMP Code

ReferꢀtoꢀElectricalꢀ

6.86

(.270")

characteristics table

3.15

(.124")

QUANTITY Code

Mꢀ=ꢀ1000ꢀpcs

Nꢀ =ꢀ5000ꢀpcs

2.95

(.116")

1.96

(.077")

PACKAGING Code

Rꢀ=ꢀTapeꢀandꢀReel

Recommended pad layout

RoHS Compliant & Halogen Free

NOTE: “L” sufﬁx applies to 451 series only

-ꢀ 451ꢀseriesꢀmayꢀbeꢀorderedꢀasꢀeitherꢀ“RoHSꢀandꢀHF”ꢀ(“L”ꢀsufﬁx)ꢀorꢀnon-RoHSꢀ(noꢀsufﬁx)ꢀversion.

-ꢀ 453ꢀseriesꢀisꢀavailableꢀonlyꢀasꢀRoHSꢀcompliantꢀversionꢀandꢀdoesꢀnotꢀrequireꢀ“L”ꢀsufﬁx.ꢀPleaseꢀdoꢀnotꢀ

includeꢀ“L”ꢀsufﬁxꢀwithinꢀ453ꢀseriesꢀorderingꢀinstructions.

Packaging

Quantity &

Packaging Option

12mmꢀTapeꢀandꢀReel

Packaging Speciﬁcation

EIAꢀRS-481-2ꢀ(IECꢀ286,ꢀpartꢀ3)

Quantity

Packaging Code

5000

1000

451/453 Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/451.html

or /453.html for current information.

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