PCT
Vishay Dale
Wirewound Resistors, Commercial Power,
Printed Circuit Board, Tab Type Terminals
FEATURES
•
Variety of core lengths
•
Terminals designed for direct mounting into a
circuit board to be securely clamped
•
Available potted in a ceramic case to increase
power dissipation, contact factory by using the
e-mail address at the bottom of this page
Pb-free
e3
RoHS
COMPLIANT
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
(1)
PCT4050
PCT4065
PCT4085
PCT4105
PCT4145
PCT4185
PCT4215
HISTORICAL
MODEL
(1)
PCT-4050
PCT-4065
PCT-4085
PCT-4105
PCT-4145
PCT-4185
PCT-4215
POWER RATING
P
25 °C
W
2.0
2.6
3.4
4.2
5.8
7.4
8.6
RESISTANCE RANGE
Ω
± 10 % standard, ± 5 % available
0.10 - 390
0.14 - 560
0.20 - 785
0.25 - 1.01K
0.36 - 1.46K
0.47 - 1.91K
0.56 - 2.25K
WEIGHT
(typical)
g
0.57
0.59
0.62
0.65
0.71
0.77
0.81
Note
(1)
PCT4000 model numbers are calculated from the power rating of 4 W per inch. The last three digits of the model number represent the
mounting center spacing of the resistors in inches (decimal is between the first and second digit, mounting center spacing is available between
0.50" [12.70 mm] and 2.15" [54.61 mm].
Example: PCT4150 = 1.50 inches x 4 W per inch = 6 W.
TECHNICAL SPECIFICATIONS
PARAMETER
Power Rating
Temperature Coefficient
Short Time Overload
Maximum Working Voltage
Operating Temperature Range
Terminal Strength
UNIT
W
ppm/°C
-
V
°C
lb
PCT4000 RESISTOR CHARACTERISTICS
4 per inch
± 600 below 1.0
Ω,
± 300 1.0
Ω
and above
5 x rated power for 5 s
(P x
R)
1/2
- 65 to + 375
10 minimum
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: PCT405015R00JB14 (preferred part numbering format)
P
C
T
4
0
5
0
1
5
R
0
0
J
B
1
4
SPECIAL
(Dash
Number)
(up to 2 digits)
From
1 - 99
as
applicable
GLOBAL MODEL
(See Standard Electrical
Specifications Global Model
column for options)
VALUE
R
= Decimal
K
= Thousand
R1500
= 0.15
Ω
1K500
= 1500
Ω
15
Ω
TOLERANCE
H
= ± 3.0 %
J
= ± 5.0 %
K
= ± 10 %
PACKAGING
B14
= Lead (Pb)-free
bulk
B31
= Lead (Pb)-free
four layer
bulk
Historical Part Number Example: PCT-4050
5
%
B14 (will continue to be accepted)
PCT-4050
HISTORICAL MODEL
15
Ω
RESISTANCE
VALUE
5
%
TOLERANCE
CODE
B14
PACKAGING
www.vishay.com
62
For technical questions, contact: ww2aresistors@vishay.com
Document Number: 30223
Revision: 14-Feb-06
PCT
Wirewound Resistors, Commercial Power,
Printed Circuit Board, Tab Type Terminals
DIMENSIONS
in inches [millimeters]
PCT4000
Vishay Dale
0.150 [3.81]
± 0.005 [0.127]
0.146 [3.71] ± 0.010 [0.254]
0.180 [4.57]
± 0.005 [0.127]
0.105 [2.67]
typical
0.030 [0.76]
± 0.005 [0.127]
Mounting centers
0.500 ± 0.020 to 1.15 ± 0.020
[12.70 ± 0.508 to 54.61 ± 0.508]
0.500 ± 0.032
[12.70 ± 0.813]
0.018 [0.457]
minimum
0.055 [1.40]
± 0.005 [0.127]
RATED POWER IN
%
MATERIAL SPECIFICATIONS
Element:
Nickel-chrome alloy or copper-nickel alloy,
depending on resistance value
Core:
Woven fiberglass
Terminals:
Electro tin plated steel
Part Marking:
None
120
100
80
60
40
20
0
- 65 - 50
0
75
150
225
300
375
AMBIENT TEMPERATURE IN °C
Derating
25
PERFORMANCE
TEST
Thermal Shock
Short Time Overload
Low Temperature Operation
Humidity
Load Life
Resistance to Solder Heat
CONDITIONS OF TEST
- 55 °C to + 275 °C, 5 cycles, 30 min dwell time
5 x rated power for 5 s
- 65 °C, full rated working voltage for 45 min
75 °C, 90
%
- 100
%
RH, 240 h
1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF”
Terminal immersed 3.5 s in molten solder at 1/8" to 3/16" from body
TEST LIMITS (EIA RS-344)
± (5.0
%
+ 0.05
Ω) ΔR
± (4.0
%
+ 0.05
Ω) ΔR
± (3.0
%
+ 0.05
Ω) ΔR
± (5.0
%
+ 0.05
Ω) ΔR
± (10.0
%
+ 0.05
Ω) ΔR
± (4.0
%
+ 0.05
Ω) ΔR
Document Number: 30223
Revision: 14-Feb-06
For technical questions, contact: ww2aresistors@vishay.com
www.vishay.com
63
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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