0491.250NR原理图各脚功能电路原理芯片引脚定义引脚图及功能-中国IC网-芯三七

产品型号0491.250NRT1HF的Datasheet PDF文件预览

Axial Lead & Cartridge Fuses

PICO^®ll > Very Fast-Acting > 491 Series

491 Series, PICO^®II, Very Fast-Acting Fuse

Description

The PICO^®II Very Fast-Acting Fuse is designed to meet an

extensive array of performance characteristics in a

space-saving subminiature package.

Features

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temperature range

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range (125mA - 10A)

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rating

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Applications

Agency Approvals

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Agency

Agency File Number

Ampere Range

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E10480

LR 29862

125mA - 10A

1A - 5A

Electrical Characteristics

JET 1896-31007-1001

% of Ampere

Rating

Ampere Rating

1/8-10

OpeningTime

100%

300%

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1/8-10

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Electrical Characteristics

Agency Approvals

Max

Voltage

Rating

(V)

Ampere

Rating

(A)

Ordering

Number

(Std.)

Nominal Cold

Resistance

(Ohms)

Interrupting

Rating

Amp Code

.125

.200

.250

.315

.400

.500

.630

.750

.800

1.00

1.25

1.50

1.60

2.00

2.50

3.00

3.15

3.50

4.00

5.00

7.00

0.125

0.200

0.250

0.315

0.400

0.500

0.630

0.750

0.800

001.

0491.125

0491.200

0491.250

0491.315

0491.400

0491.500

0491.630

0491.750

0491.800

0491 001.

0491 1.25

0491 01.5

0491 01.6

0491 002.

0491 02.5

0491 003.

0491 3.15

0491 03.5

0491 004.

0491 005.

0491 007.

0491 010.

125

1.7000

0.8950

0.6650

0.5000

0.3230

0.3020

0.2050

0.1750

0.1480

0.1280

0.1000

0.0823

0.0700

0.0473

0.0360

0.0295

0.0275

0.0240

0.0204

0.0158

0.0107

0.0072

50A at

125Vac and

Vdc

1.25

01.5

01.6

002.

02.5

003.

3.15

03.5

004.

005.

007.

10.00

010.

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491 Series

EC3051v1E-0902-CUST

Speciﬁcations are subject to change without notice.

Revised: March 11, 2009

Please refer to www.littelfuse.com for current information.

Introduction to Circuit Protection

Axial Lead & Cartridge Fuses

Transientology

PICO ll > Very Fast-Acting > 491 Series

Temperature Rerating Curve

AverageTime Current Curves

1000

100

Note:

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continuous operation.

0.1

0.01

Soldering Parameters

Recommended Process Parameters:

0.1

100

1000

CURRENT IN AMPERES

Wave Parameter

Preheat:

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PreheatTime:

Lead-Free Recommendation

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100° C

150° C

60-180 seconds

Solder PotTemperature:

Solder DwellTime:

260° $ꢀ.BYJNVN

2-5 seconds

Recommended Hand-Solder Parameters:

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Note: These devices are not recommended for IR or

Convection Reﬂow process.

491 Series

EC3051v1E-0902-CUST

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com for current information.

Revised: March 11, 2009

Axial Lead & Cartridge Fuses

PICO^®ll > Very Fast-Acting > 491 Series

Product Characteristics

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Materials

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Solderability

Lead Pull Force

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Shock

Condition I (100 G’s peak for 6

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Vibration

Moisture Resistance

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Resistance to Soldering

Heat

Flammability Rating

6-ꢀꢕꢂ7oꢄ

Part Numbering System

Dimensions

0491 xxxx N R T1 HF

491 Series (RoHS Version) Markings

(T1 lead length)

62.7 (2.468")

Series

52.4 (2.062")*

27.78

Current Rating

(1.094")

7.11 (.280")

Refer to Amp Code column of

Electrical Characteristics Table

0.5

2.80 (.11")

MAX

Quantity

N = 5000

M = 1000

5.0 (.197")

6.35 (.25")

tape

6.35 (.25")

tape

Wire Diameter:

0.64 (.025")

Type of Packaging

R = Reel

A = Ammo Pack

491 Series (RoHS and Halogen-free Version) Markings

(T1 lead length)

Lead Length

62.7 (2.468")

The default lead length for Ammo pack and

Loose pack is now T1

T1 = 52.4mm (2.062”)

52.4 (2.062")*

27.78

(1.094")

27.78

(1.094")

7.11 (.280")

0.5

Option Codes

Blank = RoHS

2.80 (.11")

MAX

5.0 (.197")

6.35 (.25")

tape

6.35 (.25")

tape

= RoHS and Halogen-free

Wire Diameter:

0.64 (.025")

Packaging

Quantity &

Packaging Code

Packaging Option

Packaging Speciﬁcation

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EIA 296

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491 Series

EC3051v1E-0902-CUST

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com for current information.

Revised: March 11, 2009

Introduction to Circuit Protection

Transientology

Speciﬁcations are subject to change without notice.

Revised: March 11, 2009

型号:	0491.400MAT1
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	LITTELFUSE INC
Reach Compliance Code：	unknown
ECCN代码：	EAR99
风险等级：	5.76
熔断特性：	VERY FAST
主体高度：	7.11 mm
主体长度或直径：	2.8 mm
电路保护类型：	Electric Fuse
保险丝尺寸：	PICO
最高工作温度：	125 °C
最低工作温度：	-55 °C
物理尺寸：	2.8mm x 7.11mm
额定电流：	0.4 A
额定电压：	125 V
参考标准：	CSA, UL
端子形状：	PIN WIRE
断开时间或延迟：	14400 s
Base Number Matches：	1

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