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POLYFUSE ? Resettable PTCs
Radial Leaded > 250R Series
Tape and Ammo Speci?cations
Devices taped using EIA468-B/IE286-2 standards. See table below and Figure 1 for details.
Dimensions
Dimension
Carrier tape width
Hold down tape width
Top distance between tape edges
Sprocket hole position
Sprocket hole diameter*
Abscissa to plane (straight lead)
Abscissa to plane (kinked lead)
Abscissa to top
Overall width without lead protrusion
Overall width with lead protrusion
Lead protrusion
Protrusion of cut out
Protrusion beyond hold–down tape
Sprocket hole pitch: 250R080–250R145
Sprocket hole pitch: 250R180
Pitch tolerance
EIA Mark
W
W 4
W 6
W 5
D 0
H
H 0
H 1
C 1
C 2
L 1
L
l 2
P 0
P 0
IEC Mark
W
W 0
W 2
W 1
D 0
H
H 0
H 1
l 1
L
l 2
P 0
P 0
Dim. (mm)
18
11
3
9
4
18.5
16
32.2
42.5
43.2
1.0
11
Not speci?ed
12.7
25.4
20
consecutive.
Tol. (mm)
–0.5 / +1.0
min.
max.
–0.5 / +0.75
–0.32 / +0.2
–/+ 3.0
–/+ 0.5
max.
max.
max.
max.
max.
–/+ 0.3
–/+ 0.5
–/+ 1
Device pitch: 250R080–250R145
Device pitch: 250R180
12.7
25.4
Tape thickness
Tape thickness with splice
Splice sprocket hole alignment
Body lateral deviation
Body tape plane deviation
Ordinate to adjacent component lead*
Lead spacing
t
t 1
Δh
Δp
P 1
F
t
Δh
Δp
P 1
F
0.9
2.0
0
0
0
3.81
5.1
max.
max.
–/+ 0.3
–/+ 1.0
–/+ 1.3
–/+ 0.7
–/+ 0.7
*Differs from EIA Specification
Tape and Ammo Diagram
Δh
Δh
Figure 1
Δh
Δp
Reference plane
H 1
L
A 1
A
B
F
H 0
W 4
W 5
W
H 1 C 1
H C 2
I 2
L 1
P 0
D 0
Direction of unreeling
Cross section A - B
t
? 2010 Littelfuse, Inc
Speci?cations are subject to change without notice.
Please refer to www.littelfuse.com/series/250R.html for current information.
105
Revised: July 12, 2010
250R Series
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