7

269

Surface Mount Fuses

www .littelfuse .com

Subminiature Surface Mount

NANO

2®

Tin-Lead

Silver

Nominal

Nominal

Plated

Plated

Ampere

Voltage

Resistance Melting I

Catalog #

Catalog #

Rating

Rating

Cold Ohms

A

R452.375

0454.375

3/8

125

1.20

0.101

R452.500

0454.500

1/2

125

0.700

0.240

R452.750

0454.750

3/4

125

0.360

0.904

R452 001.

0454 001.

1

125

0.225

1.98

R452 01.5

0454 01.5

125

0.0930

3.65

R452 002.

0454 002.

2

125

0.0625

8.20

R452 02.5

0454 02.5

125

0.0450

15.0

R452 003.

0454 003.

3

125

0.0340

20.16

R452 03.5

0454 03.5

125

0.0224

26.53

R452 004.

0454 004.

4

125

0.0186

34.40

R452 005.

0454 005.

5

125

0.0136

53.72

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

Opening

Rating

Time

100%

4 hours, Minimum

200%

1 second, Min.; 60 seconds, Max.

300%

0.2 seconds, Min.; 3 seconds, Max.

800%

0.02 seconds, Min.; 0.1 seconds, Max.

of Underwriters Laboratories and Certified by CSA.

INTERRUPTING RATINGS:

50 amperes at 125 VAC/VDC

ENVIRONMENTAL SPECIFICATIONS:

6 milliseconds).

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

(3 sec. at 260°C).

Test Condition B (–65 to 125°C).

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

PHYSICAL SPECIFICATIONS:

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

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

“T” to designate time delay characteristics.

PATENTED

ORDERING INFORMATION:

1000

100

10

1

0.1

0.01

1000

100

10

1

0.1

CURRENT IN AMPERES

®

®

Average Time Current Curves

1 A

T

6.86

(.270")

3.15

(.124")

2.95

(.116")

1.96

(.077")

2.69

(.106")

2.69

(.106")

1.45

(.057")

6.10

(.240")

Recommended pad layout

F

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