PTF
Vishay Dale
Metal Film Resistors, Precision, Ultra-high Stability
FEATURES
• Extremely low temperature coefficient of resistance
• Very low noise and voltage coefficient
• Very good high frequency characteristics
• Can replace wirewound bobbins
• Proprietary epoxy coating provides superior moisture
protection
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P
85
°
C
W
0.05
LIMITING ELEMENT
VOLTAGE MAX.
V
200
TEMPERATURE
COEFFICIENT
ppm/
°
C
5, 10, 15
TOLERANCE
%
0.02, 0.05, 0.1, 0.25, 0.5, 1
RESISTANCE
RANGE
Ω
15R - 100K
PTF-51
PTF-56
0.125
300
5, 10, 15
0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1
15R - 500K
PTF-65
0.25
500
5, 10, 15
0.05, 0.1, 0.25, 0.5. 1
15R - 1M0
• Marking: Print-marked-model, Value, Tolerance, TC, Date code
TECHNICAL SPECIFICATIONS
PARAMETER
Rated Dissipation at 85°C
Limiting Element Voltage
Insulation Voltage (1 min)
Thermal Resistance
Terminal Strength, axial
Insulation Resistance
Category Temperature Range
Failure Rate
Weight (max)
UNIT
W
V
V
eff
K/W
N
Ω
°C
10
-9
/h
g
PTF-51
0.05
200
> 500
< 1300
> 150
≥10
11
- 55/+ 150
<1
0.11
PTF-56
0.125
300
> 500
< 520
> 50
≥10
11
- 55/+ 150
<1
0.35
PTF-65
0.25
500
> 500
260
> 50
≥
10
11
- 55/+ 150
<1
0.75
ORDERING INFORMATION
PTF-56
MODEL
PTF 51
PTF 56
PTF 65
20K5
RESISTANCE
VALUE
Ω
62R2 = 62.2
1M00 = 1M
B
TOLERANCE
F =
±
1%
D =
±
0.5%
C =
±
0.25%
B =
±
0.1%
A =
±
0.05%
BC =
±0.02%
BB =
±
0.01%
T-13
TEMPERATURE COEFFICIENT
ppm/°C
T-10 =
±
15
T-13 =
±
10
T-16 =
±
5
R36
PACKAGING
See appropriate
catalog or web page
R36 = Reel
B14 = Bulk
www.vishay.com
32
For Technical Questions, contact ff2aresistors@vishay.com
Document Number 31019
Revision 06-Feb-03
PTF
Metal Film Resistors, Precision, Ultra-high Stability
DIMENSIONS
MODEL
L
1.50
±
0.125
[38.10
±
3.18]
Vishay Dale
DIMENSIONS in inches
[millimeters]
D
0.070
±
0.010
[1.78
±
0.25]
0.091
±
0.009
[2.31
±
0.23]
0.145
±
0.016
[3.68
±
0.41]
L
1
max
0.200
[5.08]
0.300
[7.62]
0.475
[12.07]
d
0.016
[0.41]
0.025
[0.64]
0.025
[0.64]
0.150
±
0.020
[3.81
±
0.51]
0.250
±
0.031
[6.35
±
0.79]
0.375
±
0.062
[9.53
±
1.57]
PTF-51
L
D
PTF-56
L
1
Max.
* 1.08
±
0.125 [27.43
±
3.18] IF TAPE AND REEL
d
PTF-65
RATED POWER IN %
120
MATERIAL SPECIFICATIONS
100
Element:
80
60
40
20
0
-55
Precision deposited nickel chrome alloy
with controlled annealing
Specially formulated epoxy compounds.
Coated construction
Fire-cleaned high purity ceramic
Encapsulation:
Core:
Termination:
-25
0
25
50
75 85 100
125
150
175
200
AMBIENT TEMPERATURE IN ˚C
Standard lead material is solder-coated
copper. Solderable and weldable per
MIL-STD-1276, Type C.
DERATING
PERFORMANCE
TEST
Endurance
Thermal Shock
Short Time Overload
Low Temperature Operation
Moisture
Resistance to Soldering Heat
Damp Heat
IEC 60068-2.3
Dielectric Withstanding Voltage
CONDITIONS OF TEST
MIL-PRF-55182 Para. 4.7.17
1000 hours rated power at + 85˚C
MIL-STD-202, Method 107
-55˚C to + 85˚C
MIL-R-10509, Paragraph 4.6.6
MIL-PRF-55182, Methods 4.7.9
MIL-STD-202 Method 106
MIL-STD-202, Methods 210
56 days at 40˚C and 92% RH
MIL-STD-202, Methods 301 & 105
TEST RESULTS
≤ ±
0.04%
≤ ±
0.02%
≤ ±
0.01%
≤ ±
0.02%
≤ ±
0.08%
≤ ±
0.02%
≤ ±
0.08%
≤ ±
0.01%
Document Number 31019
Revision 06-Feb-03
For Technical Questions, contact ff2aresistors@vishay.com
www.vishay.com
33
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