Littelfuse 437 Series - Manual (Page 3)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Surface Mount Fuses
Ceramic Fuse > 437 Series
Materials
Body: Advanced Ceramic
Terminations: Ag / Ni / Sn (100% Lead-free)
Element Cover Coating: Lead-free Glass
Moisture
Sensitivity Level
IPC/JEDEC J-STD-020C, Level 1
Solderability IPC/EIC/JEDEC J-STD-002B, Condition B
Humidity Test MIL-STD-202, Method 103B, Conditions D
Resistance to
Solder Heat
MIL-STD-202, Method 210F, Condition B
Moisture
Resistance
MIL-STD-202, Method 106G
Product Characteristics
Thermal Shock
MIL-STD-202, Method 107G,
Condition B
Mechanical Shock
MIL-STD-202, Method 213B,
Condition A
Vibration MIL-STD-202, Method 201A
Vibration,
High Frequency MIL-STD-202, Method 204D,
Condition D
Dissolution of
Metallization IPC/EIC/JEDEC J-STD-002B,
Condition D
Terminal Strength IEC 60127-4
Dimensions
0.520 ± 0.200
[0.020 ± 0.08]
2
3.200 ± 0.1778
[0.126 ± 0.007]
1.000
[0.039]
1.63 +0.10 / -0.2
[0.064 +0.004 / -0.008]
N
1.500
[0.059]
1.800
[0.071]
3.500
[0.138]
1.000
[0.039]
0.8179 +0.046 / -0.076
[0.0332 +0.0018 / -0.003]
Packaging
Part Marking System
packaging Option packaging Specification Quantity Quantity & packaging Code
8mm Tape and Reel EIA-481, IEC 60286, Part 3 3000 WR
Part Numbering System
0437 008. W R
SERIES
AMP CODE
qUANTITY CODE
PACKING CODE
W = 3000 pcs
R = Reel Pack
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
007. W
008. X