www.vishay.com For technical questions, contact: ww2aresistors@vishay.com Document Number: 30223
62 Revision: 14-Feb-06
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
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.
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL (1)
HISTORICAL
MODEL (1)
POWER RATING
P25 °C
W
RESISTANCE RANGE
Ω
± 10 % standard, ± 5 % available
WEIGHT
(typical)
g
PCT4050 PCT-4050 2.0 0.10 - 390 0.57
PCT4065 PCT-4065 2.6 0.14 - 560 0.59
PCT4085 PCT-4085 3.4 0.20 - 785 0.62
PCT4105 PCT-4105 4.2 0.25 - 1.01K 0.65
PCT4145 PCT-4145 5.8 0.36 - 1.46K 0.71
PCT4185 PCT-4185 7.4 0.47 - 1.91K 0.77
PCT4215 PCT-4215 8.6 0.56 - 2.25K 0.81
TECHNICAL SPECIFICATIONS
PARAMETER UNIT PCT4000 RESISTOR CHARACTERISTICS
Power Rating W 4 per inch
Temperature Coefficient ppm/°C ± 600 below 1.0 Ω, ± 300 1.0 Ω and above
Short Time Overload - 5 x rated power for 5 s
Maximum Working Voltage V (P x R)1/2
Operating Temperature Range °C - 65 to + 375
Terminal Strength lb 10 minimum
GLOBAL MODEL VALUE TOLERANCE PACKAGING SPECIAL
(See Standard Electrical R = Decimal H = ± 3.0 % B14 = Lead (Pb)-free bulk (Dash Number)
Specifications Global Model K = Thousand J = ± 5.0 % B31 = Lead (Pb)-free
four layer bulk
(up to 2 digits)
column for options) R1500 = 0.15 Ω K = ± 10 % From 1 - 99 as
1K500 = 1500 Ωapplicable
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: PCT405015R00JB14 (preferred part numbering format)
PCT405015R00JB14
Historical Part Number Example: PCT-4050 15 Ω5 %B14 (will continue to be accepted)
PCT-4050 15
Ω
5 %B14
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE PACKAGING
CODE
RoHS
COMPLIANT
Pb-free
e3
Document Number: 30223 For technical questions, contact: ww2aresistors@vishay.com www.vishay.com
Revision: 14-Feb-06 63
PCT
Wirewound Resistors, Commercial Power,
Printed Circuit Board, Tab Type Terminals Vishay Dale
DIMENSIONS in inches [millimeters]
PCT4000
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
0.150 [3.81]
± 0.005 [0.127]
0.500 ± 0.032
[12.70 ± 0.813]
0.180 [4.57]
± 0.005 [0.127]
0.030 [0.76]
± 0.005 [0.127]
0.055 [1.40]
± 0.005 [0.127]
0.105 [2.67]
typical
Mounting centers
0.500 ± 0.020 to 1.15 ± 0.020
[12.70 ± 0.508 to 54.61 ± 0.508]
0.146 [3.71] ± 0.010 [0.254]
0.018 [0.457]
minimum
25 AMBIENT TEMPERATURE IN °C
Derating
RATED POWER IN %
- 65
0
20
40
60
80
100
120
- 50 0 75 150 225 300 375
PERFORMANCE
TEST CONDITIONS OF TEST TEST LIMITS (EIA RS-344)
Thermal Shock - 55 °C to + 275 °C, 5 cycles, 30 min dwell time ± (5.0 % + 0.05 Ω) ΔR
Short Time Overload 5 x rated power for 5 s ± (4.0 % + 0.05 Ω) ΔR
Low Temperature Operation - 65 °C, full rated working voltage for 45 min ± (3.0 % + 0.05 Ω) ΔR
Humidity 75 °C, 90 % - 100 % RH, 240 h ± (5.0 % + 0.05 Ω) ΔR
Load Life 1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (10.0 % + 0.05 Ω) ΔR
Resistance to Solder Heat Terminal immersed 3.5 s in molten solder at 1/8" to 3/16" from body ± (4.0 % + 0.05 Ω) ΔR
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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