3

© 2009 Littelfuse, Inc.

Specifications are subject to change without notice.

Surface Mount Fuses

438 Series

Ceramic Fuse > 438 Series

Please refer to www.littelfuse.com/series/438.html for current information.

Materials

Body: Advanced Ceramic

Terminations: Ag / Ni / Sn (100% Lead-free)

Element Cover Coating: Lead-free Glass

Moisture

Sensitivity Level

IPC/JEDECJ-STD-020C,Level1

Solderability

IPC/EIC/JEDECJ-STD-002B,ConditionB

Humidity

MIL-STD-202,Method103B,ConditionsD

Resistance to

Solder Heat

MIL-STD-202,Method210F,ConditionB

Product Characteristics

Moisture Resistance

MIL-STD-202, Method 106G

Thermal Shock

MIL-STD-202, Method 107G,

ConditionB-3

Mechanical Shock

MIL-STD-202,Method213B,

Condition A

Vibration

MIL-STD-202, Method 201A

Vibration,

High Frequency

MIL-STD-202, Method 204D,

Condition D

Dissolution of

Metallization

IPC/EIC/JEDECJ-STD-002B,

Condition D

Terminal Strength

IEC60127-4

Dimensions

1.54 ± 0.150

[0.061 ± 0.006]

0.74

[0.029]

1.00

[0.039]

1.94

[0.076]

0.60

[0.024]

0.502 ± 0.080

[0.020 ± 0.003]

0.530 +/- 0.150

[0.021 +/- 0.006]

0.85 ± 0.150

[0.033 ± 0.006]

0.432 +/- 0.150

[0.017 +/- 0.006]

Packaging

Part Marking System

Packaging Option

Packaging Specification

Quantity

Quantity &

Packaging Code

8mm Tape and Reel

EIA-481,IEC60286,Part3

3000

WR

Part Numbering System

0438 005. W R

SERIES

AMP CODE

QUANTITY CODE

PACKING CODE

W = 3000 pcs

R=ReelPack

Amp Code

Marking Code

.250

D

.375

E

.500

F

.750

G

001.

H

1.25

J

01.5

K

1.75

L

002.

N

02.5

O

003.

P

03.5

R

004.

S

005.

T

006.

U