www.vishay.com For technical questions, contact: ww1resistors@vishay.com Document Number: 28731
144 Revision: 31-Mar-09
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 “MIL-STD-202E, Method 215” and
“IEC 60068-2-45”.
Notes
(1) PAC02 WSZ: P25 °C = 1.8 W
• For Pulse Diagrams see AC..series (www.vishay.com/doc?28730)
** Please see document “Vishay Green and Halogen-Free Definitions (5-2008)”: www.vishay.com/doc?99902
STANDARD ELECTRICAL SPECIFICATIONS
MODEL POWER RATING
P25 °C
TOLERANCE LIMITING
VOLTAGE
RESISTANCE RANGE
E12 = ± 10 % Tol., E24 = ± 5 % Tol.
DIN 41432
PAC01 1 W ± 1 % 0.10 Ω to 2.2 kΩ
PAC02 (1) 2 W ± 1 % 0.10 Ω to 3.6 kΩ
PAC03 3 W ± 1 % 0.10 Ω to 4.7 kΩ
PAC04 4 W ± 1 % 0.10 Ω to 8.2 kΩ
PAC05 5 W ± 1 % 0.10 Ω to 10 kΩ
PAC06 6 W ± 1 % 0.10 Ω to 12 kΩ
P x R
P x R
P x R
P x R
P x R
P x R
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PAC.. Series
Cemented Wirewound Precision Resistors Vishay Draloric
Notes
(1) Special winding on request
(2) Other dimensions and special character on request
(3) See “Part Number and Product Description”
(4) See “Packaging Table”
Note
(5) Radial parts with tin plated copper leads
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: PAC300004641FAC000
MODEL SPECIAL
CHARACTER TCR/MATERIAL VALUE TOLERANCE
CODE
PA CK AG I N G
CODE SPECIAL
PAC1 0 0 = PAC01
PAC2 0 0 = PAC02
PAC3 0 0 = PAC03
PAC4 0 0 = PAC04
PAC5 0 0 = PAC05
PAC6 0 0 = PAC06
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
A = E/K 22.5 mm (2)
Z = Value overflow
(Special)
0 =
Standard (100 ppm)
K = 90 ppm (1)
C = 50 ppm (1)
L = 30 ppm (1)
3 digit value
1 digit multiplier
MULTIPLIER
7 = *10- 3
8 = *10- 2
9 = *10- 1
0 = *100
1 = *101
2 = *102
3 = *103
4 = *104
5 = *105
F = ± 1.0 % (See
Packaging
table)
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
0E0 = CECC E0
0E6 = CECC E6
Product Description: PAC03 4K7 1 % AC
PAC03 4K7 1 % AC
MODEL (3) VALUE (3) TOLERANCE CODE (3) PAC K AG I N G
DESCRIPTION (4)
PACKAGING TABLE
MODEL
AMMO LOOSE BLISTER
PIECES PACK.
CODE
PACK.
DESC. PIECES PACK.
CODE
PACK.
DESC. PIECES PACK.
CODE
PACK.
DESC.
PAC01 1000 A1 A1
PAC01 DK/EK 500 LC LC
PAC01RT 2500 AE AE
PAC02 500 AC AC
PAC02 DK/EK 500 LC LC
PAC02 WSZ 1250 BM BM
PAC03 500 AC AC
PAC03 DK/EK 500 LC LC
PAC04 500 AC AC
PAC04 DK/EK 500 LC LC
PAC05 500 AC AC
PAC05 DK/EK 250 LB LB
PAC06 500 AC AC
PAC06 DK/EK 250 LB LB
12NC ORDERING CODE INDICATING RESISTOR TYPE AND PACKAGING
TYPE
ORDERING CODE 2306 327 .....
BANDOLIER IN AMMOPACK
RADIAL STRAIGHT LEADS
2500 units 500 units 1000 units
PAC0 1 RT (5) - 2306 327 5....
PAC02 - 2306 327 0.... -
PAC03 - 2306 327 1.... -
PAC04 - 2306 327 2.... -
PAC05 - 2306 327 3.... -
PAC06 - 2306 327 4.... -
3000 4700AC FAC 01P 00
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146 Revision: 31-Mar-09
PAC.. Series
Vishay Draloric Cemented Wirewound Precision Resistors
ORDERING INFORMATION
Ordering Code (12NC)
•The resistors have a 12-digit ordering code staring with
2306 327
•The subsequent first digit indicates the resistor type and
packaging; see the 12NC Ordering Code table.
•The remaining 4 digits indicate the resistance value:
- The first 3 digits indicate the resistance value.
- The last digit indicates the resistance decade in
accordance with the 12NC Indicating Resistance
Decade table.
Last Digit of 12NC Indicating Resistance Decade
Ordering Example
The ordering code for an PAC02, resistor value 47 Ω with
± 1 % tolerance, supplied in ammopack of 500 units is:
2306 327 04709.
Product specifications deviating from the standard values
are available on request.
DIMENSIONS
RESISTANCE DECADE LAST DIGIT
0.10 to 0.976 Ω7
1to9.76Ω8
10 to 97.6 Ω9
100 to 976 Ω1
1to9.76kΩ2
10 to 12 kΩ3
MODEL
DIMENSIONS in millimeters [inches]
Dmax. Lmax. dG
WEIGHT g
per 100 units
PAC01 4.3 [0.169] 11 [0.433]
0.8 ± 0.03
[0.031 ± 0.001]
63 ± 1 [2.480 ± 0.039] 52
PAC02 4.8 [0.189] 13 [0.512] 63 ± 1 [2.480 ± 0.039] 75
PAC03 5.5 [0.217] 16.5 [0.650] 63 ± 1 [2.480 ± 0.039] 110
PAC04 7.5 [0.295] 18 [0.709] 73 ± 1 [2.874 ± 0.039] 190
PAC05 7.5 [0.295] 26 [1.024] 73 ± 1 [2.874 ± 0.039] 260
PAC06 7.5 [0.295] 26 [1.024] 73 ± 1 [2.874 ± 0.039] 260
PERFORMANCE
TEST TEST RESULTS
Climatic Category 55/200/56
Damp Heat, Steady State
(40 ± 2) °C, 56 days, (93 ± 3) % RH ΔR = ± (1.0 % R + 0.05 Ω)
Storage
1000 h, 200 °C, no load ΔR = ± (1.0 % R + 0.05 Ω)
Climatic Sequence
IEC 60115-1 4.23 ΔR = ± (0.5 % R + 0.05 Ω)
Load Life
1000 h ΔR = ± (0.5 % R + 0.05 Ω)
Resistance to Soldering Heat
(260 ± 5) °C, (10 ± 1) s ΔR = ± (0.2 % R + 0.05 Ω)
Robustness of Termination
10N ΔR = ± (0.1 % R + 0.05 Ω)
Short Time Overload
10 x Rated Power for 5 s ΔR = ± (0.2 % R + 0.05 Ω)
DL
G
d
For packaging dimensions see separate packaging dimensions page.
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Revision: 31-Mar-09 147
PAC.. Series
Cemented Wirewound Precision Resistors Vishay Draloric
Note
(1) See table DIMENSIONS
BENDING FORMS
TYPE Ø d Ø Dmax. L h ± 1 P ± 1 Smax.
PAC01
0.8 (1) (1) 8
17.8
2PAC02 - PAC04 25.4
PAC05 - PAC06 33.0
TYPE Ø d Ø Dmax. Lh ± 1P
1 ± 1 P2 ± 3 Smax. Ø B c
PAC01
0.8 (1) (1) 8
19.8 17.8
2 1.0 ± 0.1 4.5 ± 1PAC02 - PAC04
22.0 20.0
27.4 25.4
PAC05 - PAC06 35.0 33.0
TYPE Ø d Ø Dmax. Lh ± 1P
1 ± 1 P2 ± 3 Smax. Ø B c
PAC01 - PAC02
0.8 (1) (1) 8
17.8 17.8
2 1.0 ± 0.1 4.5 ± 1PAC02 - PAC04 25.4 25.4
PAC05 - PAC06 33.0 33.0
P
h
L
Ø d
Ø D
S
KINK TYPE S = EK
Ø D
DOUBLE KINK SP = DK SP
S
Ø d
P1
h
P2
c
Ø B
L
Ø D
DOUBLE KINK LP = DK LP
S
Ø d
P1
h
P2
c
Ø B
L
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148 Revision: 31-Mar-09
PAC.. Series
Vishay Draloric Cemented Wirewound Precision Resistors
Notes
(1) See table DIMENSIONS
(2) Test over 10 holes - 9 intervals P0 12.7 x 9 = 114.3 ± 0.5
(3) Parallelism, < 0.5 mm
(4) Thickness of carrier tape: 0.55 mm ± 0.1
BENDING FORMS
TYPE Ø d Ø Dmax. ALFHEab l
PAC02 WSZ 0.8 (1) 17 ± 0.5 11 - 12 4.8 ± 0.5 3.6 ± 0.5 5.0 ± 0.5 2.5 5.5 14.5
TYPE PAC01
Lead Ø Ø d 0.8
Diameter Ø D (1)
Length L(1)
Pitch of components P 12.7 ± 1.0
Pitch of spocket holes (2) P0 12.7 ± 0.3
Distance between hole center and resistor center P1 3.85 ± 0.7
Distance between hole center and lead center P2 6.35 ± 1.0
Lead spacing F 5.0 + 0.6, - 0.1
Angle of insertion Δh1 2 max.
Width of carrier tape W 18.0 ± 0.5
Width of adhesive tape W0 12.0 ± 0.5
Position of holes W1 9.0 ± 0.5
Position of adhesive tape W2 0.5 max.
Body to hole center H 19.5 ± 1.0
Lead crimp to hole center (3) H0 16.0 ± 0.5
Hole Ø D0 4.0 ± 0.2
Thickness of tape (4) t 0.9 max.
Height for cutting L1 11 max.
Height for insertion H1 32 max.
WSZ
Ø D
A
L
E
Ø d
F
H
I
b
a
Solder pad dimensions
RADIAL TAPED = RT
1 max.
Δh1
t
Direction of Unreeling
P1F
P0D0
P2P
H1
L1
HH0
W0
W2
W1
W
d
LØ D
Document Number: 28731 For technical questions, contact: ww1resistors@vishay.com www.vishay.com
Revision: 31-Mar-09 149
PAC.. Series
Cemented Wirewound Precision Resistors Vishay Draloric
DERATING
0
20
40
60
80
100
50 100 150 200 250 300
AMBIENT TEMPERATURE IN °C
025
RATED POWER IN %
Maximum dissipation (Pmax.) as a function
of the ambient temperature (Tamb)
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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All product specifications and data are subject to change without notice.
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