Fuse Holder Datasheet
281/556/557 Series
Thru-Hole Circuit Board Mount Blocks for MicroTM/TR-3 Fuses
RoHS
Product Characteristics
281 Series PC Mount - Vertical
281 Series PC Mount - Horizontal
281 Series
Vertical
281 Series
Horizontal
556 Series
Vertical
557 Series
Horizontal
Compatible
Fuses
MICROTM/TR3®
Thru-hole circuit board mount blocks designed for
Littelfuse MICRO™/TR3 type and other fuse series
with .025” diameter leads rated to 5 amps
Rated at 5A / 1.6W to 125 volts.
Description
Electrical
556 Series PC Mount - Vertical
557 Series PC Mount - Horizontal
Mounting
Method
PC BoardThru-Hole @ 5.08 hole spacing
White
Vertical
WhiteThermoplastic
UL 94V0 PBT
White
Horizontal
Black
Vertical
BlackThermoplastic
UL 94V0
Black
Horizontal
Mount Color
& Direction
Molded Part
Specs
Copper Alloy with
options
Tin Plating (281008, 281010)
or Silver Plating
Copper Alloy with
Tin Plating
Metal Parts
andTerminals
Additional Information
(281005, 281007)
Ambient
Temperature
–40ºC to +100ºC.
UnitWeight
0.41g
0.50g
0.42g
0.51g
Dimensions units in inch (mm)
Resources
281 Series
Accessories
281 Series
Samples
281 Series
02810005H, 02810008H
02810007H, 02810010H
White / Horizontal Mount Devices
White / Vertical Mount Devices
0.25˝
0.28˝
0.10˝
0.10˝
REF.
0.26˝
0.046˝
TYP.
0.23˝
0.18˝
0.046˝
0.20˝
TYP.
0.25˝
DIA.
Resources
556 Series
Accessories
556 Series
Samples
556 Series
0.20˝
0.20˝
Circuit Board Mounting Detail
Circuit Board Mounting Detail
0.195˝
0.095˝
0.105˝
0.050˝ DIA.
0.205˝
0.050˝ DIA.
0.055˝ HOLES
(2)
0.055˝ HOLES
(2)
0.195˝
0.205˝
Resources
557 Series
Accessories
557 Series
Samples
557 Series
0.095˝
0.105˝
0.219˝
0.229˝
Agency Approvals
55600000001
55700000001
Agency File Number
Agency
Black / Vertical Mount Devices
Black / Horizontal Mount Devices
281 Series
556 Series
557 Series
0.276”(7.0)
.244”(6.2)
0.244”(6.2)
E14721
N/A
N/A
0.138”
(3.5)
Ordering Information
Terminal
Plating
Mount
Color
Mount
Direction
0.177”
(4.5)
0.01”
(0.ꢀ)
Ordering Number
Packaging
0.020”
(0.50)
0.047”
(1.2)
02810005H
02810008H
Silver1
White
White
White
White
Black
Black
Vertical
Vertical
100 (Bulk pack)
100 (Bulk pack)
100 (Bulk pack)
100 (Bulk pack)
1000 (Bulk pack)
0.200 0.006”
(5.08 .15)
0.10 0.002”
(2.54 0.05)
Tin1
Silver1
Tin1
Horizontal
Horizontal
Vertical
Circuit Board Mounting Detail
Circuit Board Mounting Detail
02810007H
0.20” (5.08)
02810010H
55600000001*
55700000001*
Tin
Tin
Horizontal 1000 (Bulk pack)
0.10”(2.54) 0.10”(2.54)
0.20” (5.08)
1. UL recognized.
* RoHs compliant.
Note: 281 Series meets with Glow Wire requirements specified on IEC 60695-2-12 & 60695-2-13
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.
© 2023 Littelfuse, Inc.
Specifications are subject to change without notice.
1
Revised: GD. 02/08/23