Littelfuse 456 Series Manual do Utilizador descarregar pdf (Página 3)

Speciﬁcations are subject to change without notice.

Revised: 12/19/13

Surface Mount Fuses

NANO

2®

> 456 Series

Operating Temperature -55

C to 125

C with proper derating

Thermal Shock

MIL-STD-202F, Method 107G,

Test Condition B

(5 cycles -65

C to 125

Vibration

MIL-STD-202F, Method 201A

(10-55 Hz)

Moisture Sensitivity

Level

Level 1 J-STD-020C

Moisture Resistance

MIL-STD-202F Method 106,

High Humidity (90-98%RH),

Heat (65

Salt Spray

MIL-STD-202F, Method 101D,

Test Condition B

Mechanical Shock

MIL-STD-202, Method 213,

Test Condition I (100 G’s peak for 6

milliseconds)

Product Characteristics

Dimensions

Part Numbering System

Packaging

Rating Packaging Option Packaging Speciﬁcation Quantity Quantity & Packaging Code

20A, 25A, 30A 24 mm Tape and Reel EIA RS-481-2 2500 ER

40A 24 mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1500 DR

Materials

Body: Ceramic

Cap: Silver Plated Brass

Product Marking Body: Brand Logo, Current Rating

Insulation Resistance

MIL-STD-202, method 302, Test

Condition A (10,000 ohms, Minimum)

Solderability MIL-STD-202, Method 208

Resistance to

Soldering Heat

MIL-STD-202, Method 210,

Test Condition B (10 sec at 260

PCB

Recommendation for

Thermal Management

Min. copper layer thickness = 100µm

Min. copper trace width =20A, 30

10mm (20A, 30A) / 15mm (40A)

Alternate methods of thermal man-

agement may be used. In such cases,

under normal operations, the maxi-

mum temperature of the fuse body

should not exceed 80

C in a 25

environment.

10.10

(.397”)

3.120

(.123”)

12.50

(.492)

4.445

(.175”)

4.445

(.175”)

Recommended Pad Layout

2.173

(.086”)

2.79

(.110”)

0.30

(.012”)

3.79

(.149”)

5.72

(.225”)

13.3

(.524”)

5.65

(.222”)

3.120

[.123”]

1.70 typ

(0.067”)

3.25

(.128”)

3.43

(.135”)

12.60

(.496”)

6.10

(.240”)

20 A

20A, 25A, 30A:

40A:

40 A

0456 020. E R

SERIES

AMP Code

qUANTITY Code

PACKAGING Code

Refer to Electrical

characteristics table

E = 2500 pcs

D = 1500 pcs

R = Tape and Reel

1 2 3

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