PTF
www.vishay.com
Vishay Dale
Metal Film Resistors, Axial, High Precision, High Stability
FEATURES
Extremely low temperature coefficient of
resistance
Very low noise and voltage coefficient
Available
Very good high frequency characteristics
Can replace wirewound bobbins
Proprietary epoxy coating provides superior
moisture protection
For surface mount product, see Vishay Dales
Available
PSF datasheet (www.vishay.com/doc?30162)
Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
Note
* This datasheet provides information about parts that are RoHS-compliant and / or parts that are non-RoHS-compliant. For example, parts
with lead (Pb) terminations are not RoHS-compliant. Please see the information / tables in this datasheet for details.
STANDARD ELECTRICAL SPECIFICATIONS
(3)
POWER RATING LIMITING ELEMENT TEMPERATURE RESISTANCE
GLOBAL HISTORICAL TOLERANCE
(1)
P VOLTAGE MAX. COEFFICIENT RANGE
85 C
MODEL MODEL %
W V ppm/C
PTF51 PTF-51 0.05 200 5, 10, 15 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 100K
PTF56 PTF-56 0.125 300 5, 10, 15 0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 500K
PTF65 PTF-65 0.25 500 5, 10, 15 0.05, 0.1, 0.25, 0.5, 1 15 to 1M
Notes
DSCC has created a drawing to support the need for a precision axial-leaded product. Vishay Dale is listed as a resource on this drawing
as follows:
DSCC POWER RATING RESISTANCE TEMPERATURE MAXIMUM WORKING
VISHAY DALE TOLERANCE
(1)
DRAWING P RANGE COEFFICIENT VOLTAGE
85 C
MODEL %
NUMBER W ppm/C V
PTF56..31,
89088 0.100 15 to 100K 0.01, 0.05, 0.1, 0.5, 1 5, 10 200
(2)
PTF56..32
PTF65..16,
90038 0.250 15 to 100K 0.05, 0.1, 0.5, 1 5, 10 200
(2)
PTF65..14
This drawing can be viewed at: www.landandmaritime.dla.mil/Programs/MilSpec/ListDwgs.aspx?DocTYPE=DSCCdwg
(1)
Continuous working voltage shall be P x R or maximum working voltage, whichever is less.
(2)
Hot solder dipped leads.
(3)
For operation of the PTF resistors at higher power ratings, see the Load Life Shift Due to Power and Derating table. This table gives a
summary of the effects of using the PTF product at the more common combinations of power rating and case size, as well as quantifies the
load life stability under those conditions.
TEMPERATURE COEFFICIENT CODES
GLOBAL TC CODE HISTORICAL TC CODE TEMPERATURE COEFFICIENT
Z T-16 5 ppm/C
Y T-13 10 ppm/C
X T-10 15 ppm/C
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: PTF5620K500BYRE (preferred part numbering format)
P T F 5 6 2 0K 5 0 0BY R E
GLOBAL RESISTANCE TOLERANCE TEMP .
PACKAGING SPECIAL
COEFFICIENT
MODEL VALUE CODE
(1)
PTF51 Z = 5 ppm EK = lead (Pb)-free, bulk
R = T = 0.01 % Blank = standard
(1)
Y = 10 ppm
PTF56 K = k Q = 0.02 % EA = lead (Pb)-free, T/R (full) (Dash number)
PTF65 M = M A = 0.05 % X = 15 ppm EB = lead (Pb)-free, (Up to 3 digits)
15R000 = 15 B = 0.1 % 0 = special T/R (1000 pieces)
as applicable
500K00 = 500 k BF = tin/lead, bulk
C = 0.25 %
1M0000 = 1.0 M D = 0.5 % RE = tin/lead, T/R (full)
F = 1 % R6 = tin/lead, T/R (1000 pieces)
Historical Part Number example: PTF-5620K5BT-13R36 (will continue to be accepted)
PTF-56 20K5 B T-13 R36
HISTORICAL MODEL RESISTANCE VALUE TOLERANCE CODE TEMP. COEFFICIENT PACKAGING
Notes
For additional information on packaging, refer to the Through-Hole Resistor Packaging document (www.vishay.com/doc?31544).
(1)
Historical tolerance codes were BB for 0.01 % and BC for 0.02 %.
Revision: 16-Sep-16 Document Number: 31019
1
For technical questions, contact: ff2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
From 1 to 999PTF
www.vishay.com
Vishay Dale
TECHNICAL SPECIFICATIONS
PARAMETER UNIT PTF51 PTF56 PTF65
Rated Dissipation at 85 C W 0.05 0.125 0.25
Limiting Element Voltage V 200 300 500
Insulation Voltage (1 Min) V > 500 > 500 > 500
eff
Thermal Resistance K/W < 1300 < 520 260
Terminal Strength, Axial N > 150 > 50 > 50
11 11 11
Insulation Resistance 10 10 10
Category Temperature Range C -55 to +150 -55 to +150 -55 to +150
-9
Failure Rate 10 /h < 1 < 1 < 1
Weight (Max.) g 0.11 0.35 0.75
DIMENSIONS
DIMENSIONS in inches (millimeters)
GLOBAL
L MODEL
LD L d
D 1 max.
(1)
1.50 0.125
0.150 0.020 0.070 0.010 0.200 0.016
(38.10 3.18)
PTF51
(3.81 0.51) (1.78 0.25) (5.08) (0.41)
0.250 0.031 0.091 0.009 0.300 0.025
PTF56
d
(6.35 0.79) (2.31 0.23) (7.62) (0.64)
L
1 max.
0.375 0.062 0.145 0.016 0.475 0.025
PTF65
(9.53 1.57) (3.68 0.41) (12.07) (0.64)
Note
(1)
Lead length for product in bulk pack. For product supplied in tape and reel, the actual lead length would be based on the body size, tape
spacing and lead trim.
PERFORMANCE
TEST CONDITIONS OF TEST TEST RESULTS (TYPICAL TEST LOTS)
MIL-PRF-55182 Paragraph 4.8.18
Life (at Standard Power Ratings) 0.04 %
1000 h rated power at +85 C
Mil-STD-202, Method 107
Thermal Shock 0.02 %
-55 C to +85 C
Short Time Overload MIL-R-10509, Paragraph 4.7.6 0.01 %
Low Temperature Operation MIL-PRF-55182, Methods 4.8.10 0.02 %
Moisture MIL-PRF-55182, Paragraph 4.8.15 0.08 %
Resistance to Soldering Heat MIL-STD-202, Methods 210 0.02 %
Damp Heat IEC 60068-2-3 56 days at 40 C and 92 % RH 0.08 %
Dielectric Withstanding Voltage MIL-STD-202, Methods 301 and 105 0.01 %
MATERIAL SPECIFICATIONS
Element Precision deposited nickel chrome alloy with controlled annealing
Encapsulation Specially formulated epoxy compounds. Coated construction
Core Fire-cleanded high purity ceramic
Standard lead material is solder-coated copper. Solderable and weldable
Termination
per MIL-STD-1276, Type C.
MARKING
Temperature coefficient: T10 = 15 ppm, T13 = 10 ppm, T16 = 5 ppm
Tolerance: F = 1 %, D = 0.5 %, C = 0.25 %, B = 0.1 %, A = 0.05 %, BC = 0.02 %, BB = 0.01 %
PTF51: (3 lines) PTF56, PTF65: (4 lines)
PTF51Style and size PTF56Style and size
37K4 Value 49K9 Value
BC T13 Tolerance and TC BB T16 Tolerance and TC
1211 4-digit date code
Revision: 16-Sep-16 Document Number: 31019
2
For technical questions, contact: ff2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000