PAC.. Series
Vishay Draloric
Cemented Wirewound Precision Resistors
FEATURES
•
High power dissipation in small volume
•
Ideal for pulse application
•
TCR ± 100 ppm/K
•
Maximum permissible hot spot temperature is
275 °C
•
Lead (Pb)-free
•
Tolerance 1 %
•
Compliant to RoHS directive 2002/95/EC
The resistor element is a resistive wire which is wound in a
single layer on a ceramic rod. Metal caps are pressed over
the ends of the rod. The ends of the resistance wire and the
leads are connected to the caps by welding. Tinned
copper-clad iron leads with poor heat conductivity are
employed permitting the use of relatively short leads to
obtain stable mounting without overheating the solder joint.
The resistor is coated with a green silicon cement which is
not resistant to aggressive fluxes. The coating is
non-inflammable, will not drip even at high overloads and
is resistant to most commonly used cleaning solvents, in
accordance with IEC 60068-2-45.
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P
25 °C
LIMITING
VOLTAGE
U
max.
P
x
R
RESISTANCE RANGE
(2)
TOLERANCE
PAC01
1W
0.10
Ω
to 2.2 kΩ
0.10
Ω
to 3.6 kΩ
0.10
Ω
to 4.7 kΩ
0.10
Ω
to 8.2 kΩ
0.10
Ω
to 10 kΩ
0.10
Ω
to 12 kΩ
±1%
PAC02
(1)
2W
P
x
R
±1%
PAC03
3W
P
x
R
±1%
PAC04
4W
P
x
R
±1%
PAC05
5W
P
x
R
±1%
PAC06
6W
P
x
R
±1%
Notes
(1)
PAC02 WSZ:
P
25 °C
= 1.8 W
(2)
Resistance value to be selected for ± 1 % tolerance from E24 and E96
• For Pulse Diagrams see AC..series (www.vishay.com/doc?28730)
** Please see document “Please see document “Vishay Material Category Policy”:”:
www.vishay.com/doc?99902
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144
For technical questions, contact:
ww1resistors@vishay.com
Document Number: 28731
Revision: 27-Aug-10
PAC.. Series
Cemented Wirewound Precision Resistors
Vishay Draloric
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: PAC300004701FAC000
P
A
C
3
0
0
0
0
4
7
0
1
F
A
C
0
0
0
MODEL
PAC100
= PAC01
PAC200
= PAC02
PAC300
= PAC03
PAC400
= PAC04
PAC500
= PAC05
PAC600
= PAC06
VARIANT
0
= Neutral
1
= SWI =
Special winding
(1)
2
= RT
3
= DK SP 20 mm
4
= DK LP 33 mm
(2)
5
= DK LP 17.8 mm
(2)
7
= DK LP 25.4 mm
(2)
8
= DK SP 25.4 mm
9
= WSZ 6720
C
= E/K 22.4 mm
(2)
Z
= Value overflow
(special)
TCR/MATERIAL
0
=
Standard
(± 100 ppm/K)
VALUE
3 digit value
1 digit multiplier
MULTIPLIER
7
= *10
- 3
8
= *10
- 2
9
= *10
- 1
0
= *10
0
1
= *10
1
2
= *10
2
3
= *10
3
4
= *10
4
5
= *10
5
TOLERANCE PACKAGING
CODE
CODE
F
= ± 1.0 %
(See
Packaging
table)
SPECIAL
The 3 digits are
used for all special
part styles.
To encode the
non standard
specifications all
special parts of one
series are listed in a
cross reference
table.
000
= Standard
Product Description: PAC03 4K7 1 % AC
PAC03
MODEL
(3)
Notes
(1)
Special winding on request
(2)
Other dimensions on request
(3)
See “Part Number and Product Description”
(4)
See “Packaging Table”
4K7
VALUE
(3)
1%
TOLERANCE CODE
(3)
AC
PACKAGING
DESCRIPTION
(4)
PACKAGING TABLE
AMMO
MODEL
PIECES
PAC01
PAC01 DK/EK
PAC01RT
PAC02
PAC02 DK/EK
PAC02 WSZ
PAC03
PAC03 DK/EK
PAC04
PAC04 DK/EK
PAC05
PAC05 DK/EK
PAC06
PAC06 DK/EK
500
AC
AC
250
LB
LB
500
AC
AC
250
LB
LB
500
AC
AC
500
LC
LC
500
AC
AC
500
LC
LC
2500
500
AE
AC
AE
AC
500
LC
LC
1250
BM
BM
1000
PACK.
CODE
A1
PACK.
DESC.
A1
500
LC
LC
PIECES
LOOSE
PACK.
CODE
PACK.
DESC.
PIECES
BLISTER
PACK.
CODE
PACK.
DESC.
Document Number: 28731
Revision: 27-Aug-10
For technical questions, contact:
ww1resistors@vishay.com
www.vishay.com
145
PAC.. Series
Vishay Draloric
DIMENSIONS
Cemented Wirewound Precision Resistors
G
D
L
d
For packaging dimensions see:
www.vishay.com/doc?28721
DIMENSIONS
in millimeters (inches)
MODEL
D
max.
PAC01
PAC02
PAC03
PAC04
PAC05
PAC06
4.3 [0.169]
4.8 [0.189]
5.5 [0.217]
7.5 [0.295]
7.5 [0.295]
7.5 [0.295]
L
max.
11 [0.433]
13 [0.512]
16.5 [0.650]
18 [0.709]
26 [1.024]
26 [1.024]
d
G
WEIGHT g
PER UNIT
0.52
0.75
1.10
1.90
2.60
2.60
63 ± 1 [2.480 ± 0.039]
63 ± 1 [2.480 ± 0.039]
63 ± 1 [2.480 ± 0.039]
73 ± 1 [2.874 ± 0.039]
73 ± 1 [2.874 ± 0.039]
73 ± 1 [2.874 ± 0.039]
0.8 ± 0.03
[0.031 ± 0.001]
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For technical questions, contact:
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Document Number: 28731
Revision: 27-Aug-10
PAC.. Series
Vishay Draloric
Cemented Wirewound Precision Resistors
BENDING FORMS
A
L
Ø
D
I
b
F
a
WSZ
H
E
Ø
d
Solder pad dimensions
TYPE
PAC02 WSZ
Ød
0.8
Ø D
max.
(1)
A
17 ± 0.5
L
11 - 12
P
2
P
F
4.8 ± 0.5
H
3.6 ± 0.5
E
5.0 ± 0.5
a
2.5
Δh
1
b
5.5
l
14.5
L
Ø
D
H
1
RADIAL TAPED = RT
H
H
0
L
1
P
1
F
d
W
2
1 max.
t
W
0
W
1
W
P
0
D
0
Direction of Unreeling
TYPE PAC01
Lead Ø
Diameter
Length
Pitch of components
Pitch of spocket holes
(2)
Distance between hole center and resistor center
Distance between hole center and lead center
Lead spacing
Angle of insertion
Width of carrier tape
Width of adhesive tape
Position of holes
Position of adhesive tape
Body to hole center
Lead crimp to hole
Hole Ø
Thickness of tape
(4)
Height for cutting
Height for insertion
Notes
(1)
See table DIMENSIONS
(2)
Test over 10 holes - 9 intervals P 12.7 x 9 = 114.3 ± 0.5
0
(3)
Parallelism, < 0.5 mm
(4)
Thickness of carrier tape: 0.55 mm ± 0.1
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Document Number: 28731
Revision: 27-Aug-10
center
(3)
Ød
ØD
L
P
P
0
P
1
P
2
F
Δh
1
W
W
0
W
1
W
2
H
H
0
D
0
t
L
1
H
1
0.8
(1)
(1)
12.7 ± 1.0
12.7 ± 0.3
3.85 ± 0.7
6.35 ± 1.0
5.0 + 0.6, - 0.1
2 max.
18.0 ± 0.5
12.0 ± 0.5
9.0 ± 0.5
0.5 max.
19.5 ± 1.0
16.0 ± 0.5
4.0 ± 0.2
0.9 max.
11 max.
32 max.
Switching Power Supply Study Group
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