0454.750MRSN

更新时间： 2024-01-21 13:58:39

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力特 - LITTELFUSE		/
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0454.750MRSN 技术参数

生命周期：	Active	Reach Compliance Code：	unknown
ECCN代码：	EAR99	风险等级：	5.72
电路保护类型：	ELECTRIC FUSE	Base Number Matches：	1

0454.750MRSN 数据手册

Surface Mount Fuses

Subminiature Surface Mount

NANO^2®Slo-Blo^®Fuse 452/454 Series

The NANO²Slo-Blo fuse has enhanced inrush withstand characteristics

over the NANO²Fast-Acting fuse. The unique time delay feature of this

fuse design helps solve the problem of nuisance “opening” by accommo-

dating inrush currents that normally cause a fast-acting fuse to open.

ELECTRICAL CHARACTERISTICS:

% of Ampere

Rating

Opening

Time

100%

200%

4 hours, Minimum

1 second, Min.; 60 seconds, Max.

300%

800%

0.2 seconds, Min.; 3 seconds, Max.

0.02 seconds, Min.; 0.1 seconds, Max.

AGENCY APPROVALS: Recognized under the Components Program

of Underwriters Laboratories and Certified by CSA.

AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.

INTERRUPTING RATINGS:

6.86

(.270")

6.10

(.240")

3.15

(.124")

50 amperes at 125 VAC/VDC

1 A

ENVIRONMENTAL SPECIFICATIONS:

Operating Temperature: –55°C to 125°C.

Shock: MIL-STD-202, Method 213, Test Condition I (100 G’s peak for

6 milliseconds).

Vibration: MIL-STD-202, Method 201 (10–55 Hz, .06 in. total excursion).

Salt Spray: MIL-STD-202, Method 101, Test Condition B (48 hrs.).

Insulation Resistance (After Opening): MIL-STD-202,

Method 302, Test Condition A, (10,000 ohms minimum).

Resistance to Soldering Heat: MIL-STD-202, Method 210,

(3 sec. at 260°C).

1.45

(.057")

2.95

(.116")

1.96

(.077")

2.69

(.106")

Recommended pad layout

2.69

(.106")

Average Time Current Curves

Thermal Shock: MIL-STD-202, Method 107,

Test Condition B (–65 to 125°C).

Moisture Resistance: MIL-STD-202, Method 106,

High Humidity (90-98 RH), Heat (65°C).

1000

PHYSICAL SPECIFICATIONS:

Materials: Body: Ceramic

Terminations: Tin-Lead Alloy or Silver

Plated Brass Caps.

Soldering Parameters:

Wave Solder — 260°C, 3 seconds maximum

Reflow Solder — 230°C, 30 seconds maximum

Solderability: MIL-STD-202, Method 208.

PACKAGING SPECIFICATIONS: 12mm Tape and Reel per EIA-

RS481-1 (IEC 286, part 3); 1,000 per reel; 5,000 piece reel also available.

Marking: The 452/454 series Slo-Blo fuse marking includes the letter

“T” to designate time delay characteristics.

100

PATENTED

ORDERING INFORMATION:

Tin-Lead

Plated

Silver

Nominal

Plated Ampere Voltage Resistance Melting I²t

Catalog # Catalog # Rating

Rating Cold Ohms

A²Sec.

0.1

R452.375 0454.375

R452.500 0454.500

R452.750 0454.750

3/8

1/2

3/4

125

1.20

0.700

0.360

0.101

0.240

0.904

R452 001. 0454 001.

R452 01.5 0454 01.5

125

0.225

0.0930

1.98

3.65

1 /

R452 002. 0454 002.

R452 02.5 0454 02.5

125

0.0625

0.0450

8.20

15.0

0.01

2 /

0.1

100

1000

R452 003. 0454 003.

R452 03.5 0454 03.5

125

0.0340

0.0224

20.16

26.53

CURRENT IN AMPERES

3 /

R452 004. 0454 004.

R452 005. 0454 005.

125

0.0186

0.0136

34.40

53.72

Refer to pg. 271 for SMF Omni-Blok^®Holder, Series 154 000T.

269

www. littelfuse. com

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