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 Dale’s 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 POWER RATING (3) LIMITING ELEMENT TEMPERATURE RESISTANCE GLOBAL HISTORICAL TOLERANCE P VOLTAGE MAX. (1) COEFFICIENT RANGE MODEL MODEL 85 °C ± % 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 DRAWING MODEL P85 °C RANGE ± % COEFFICIENT VOLTAGE (1) 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 PTF56..32 (2) PTF65..16, 90038 0.250 15 to 100K 0.05, 0.1, 0.5, 1 5, 10 200 PTF65..14 (2) 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 0 K 5 0 0 B Y R E GLOBAL RESISTANCE TOLERANCE T EMP. PACKAGING SPECIAL MODEL VALUE CODE COEFFICIENT PTF51 R = Ω T = ± 0.01 % (1) Z = 5 ppm EK = lead (Pb)-free, bulk Blank = standard PTF56 K = kΩ Q = ± 0.02 % (1) Y= 10 ppm EA = lead (Pb)-free, T/R (full) (Dash number) PTF65 M = MΩ A = ± 0.05 % X = 15 ppm EB = lead (Pb)-free, (Up to 3 digits) 15R000 = 15 Ω B=± 0.1 % 0 = special T/R (1000 pieces) From 1 to 999 500K00 = 500 kΩ C=± 0.25 % BF = tin/lead, bulk as applicable 1M0000 = 1.0 MΩ 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 1 Document Number: 31019 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

PTF 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 Insulation Resistance   1011  1011  1011 Category Temperature Range °C -55 to +150 -55 to +150 -55 to +150 Failure Rate 10-9/h < 1 < 1 < 1 Weight (Max.) g 0.11 0.35 0.75 DIMENSIONS GLOBAL  DIMENSIONS in inches (millimeters) L D MODEL L D L1 max. d 1.50 ± 0.125 (1) 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 L d (6.35 ± 0.79) (2.31 ± 0.23) (7.62) (0.64) 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) PTF51 Style and size PTF56 Style 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 2 Document Number: 31019 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

PTF www.vishay.com Vishay Dale LOAD LIFE SHIFT DUE TO POWER AND DERATING (AT 85 °C) The power rating for the PTF parts is tied to the derating temperature, the heat rise of the parts, and the R for the load life performance. When the tables/graphs below are used together they show that when the parts are run at higher power ratings, the parts will run hotter, which has the potential of causing the resistance of the parts to shift more over the life of the part. LOAD LIFE SHIFT VS. POWER RATING CONDITIONS OF TEST MAXIMUM R (TYPICAL TEST LOTS) LOAD LIFE MIL-PRF-55182 Paragraph 4.8.18  ± 0.04 %  ± 0.15 %  ± 0.5 %  ± 1.0 % 1000 h rated power at +85 °C MODEL POWER RATING AT + 85 °C PTF51 1/20 W 1/10 W 1/8 W 1/4 W PTF56 1/8 W - 1/4 W 1/2 W PTF65 1/4 W - 1/2 W 3/4 W N % 120 NT)120 PTF51 PTF56 R I 100 BIE100 WE M PTF65 A D PO 80 OVE 80 RATE 60 C AB 60 40 E (° 40 S RI 20 T 20 A E H 0 0 - 55 - 25 0 25 50 75 100 125 150 175 200 85 0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.125 AMBIENT TEMPERATURE IN °C APPLIED POWER IN W DERATING THERMAL RESISTANCE Example: When a PTF56 part is run at 1/8 W in a 70 °C ambient environment, the resistor will generate enough heat that the surface temperature of the part will reach about 17 °C over the ambient temperature, and over the life of the part this could cause the resistance value to shift up to ± 0.04 %.  If the same resistor was instead run at 1/4 W in a 70 °C environment, the element will heat up to about 30 °C over ambient, and over the life of the part the resistance value could shift roughly ± 0.5 %. And if the resistor was run at its maximum power rating of 1/2 W in a 70 °C environment, it will heat up to about 61°C over ambient, and you could see the resistance value shift roughly ± 1 % over the life of the part. TEMPERATURE COEFFICIENT OF RESISTANCE Temperature coefficient (TC) of resistance is normally stated as the maximum amount of resistance change from the original +25 °C value as the ambient temperature increases or decreases. This is most commonly expressed in parts per million per degree centigrade (ppm/°C). The resistance curve over the operating temperature range is usually a non-linear curve within predictable maximum limits. PTF resistors have a very unifom resistance temperature characteristic when measured over the operating range of -20 °C to +85 °C. The standard temperature coefficients available are  X = ± 15 ppm/°C, Y = ± 10 ppm/°C and Z = ± 5 ppm/°C. Some applications of the PTF require operation beyond the specifications of -20 °C to +85 °C. The change in temperature coefficient of resistance is very small (less than ± 0.05 ppm/°C) over the expanded temperature range of -55 °C to +150 °C. Therefore, when operating outside the range -20 °C to +85 °C, the designer can plan for a worst case addition of ± 0.05 ppm/°C for each degree centigrade beyond either -20 °C or +85 °C as indicated in the graph. This applies to all three temperature coefficient codes. 4 ppm/°CITNOITDDAHTTEAB O E NI C SPXEN FO NOTOP DEDAIREHTREPMETR ERUTAENAG 3012 -B 2A0S°EC TTCO L+I M85IT°C - 50 - 40 - 30 - 20 90 100 110 120 130 140 150 OPEERXATPAINNGD REDANGE Xor, YZ OPEERXATPIANNGD READNGE - 55°C TO - 20°C - 85°C TO + 150°C Example: Assume the operating characteristics demand a temperature range from -55 °C to +125 °C. This requires a ± 35 °C  below -20 °C and a ± 40 °C  above +85 °C. The extreme  being ± 40 °C means that the worst case addition to the specified TC limit of ± 0.05 ppm/°C times ± 40 °C or ± 2 ppm/°C. Therefore, a Z which is characterized by a base TC limit of ± 5 ppm/°C over the temperature range of -20 °C to +85 °C will exhibit a maximum temperature coefficient of ± 7 ppm/°C over the expanded portion of the temperature range of -55 °C to +125 °C. Revision: 16-Sep-16 3 Document Number: 31019 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

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