PTF Vishay Dale Metal Film Resistors, High Precision, 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 * For surface mount product, see Vishay Dale's PSF datasheet * Compliant to RoHS Directive 2002/95/EC STANDARD ELECTRICAL SPECIFICATIONS GLOBAL HISTORICAL MODEL MODEL RESISTANCE POWER RATING (3) LIMITING ELEMENT TEMPERATURE TOLERANCE RANGE P85 C VOLTAGE MAX. (1) COEFFICIENT % W V ppm/C 0.05 200 5, 10, 15 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 100K 0.125 300 5, 10, 15 0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 500K 0.25 500 5, 10, 15 0.05, 0.1, 0.25, 0.5, 1 15 to 1M PTF51 PTF-51 PTF56 PTF-56 PTF65 PTF-65 Notes * Marking: Print-marked-model, value, tolerance, TC, date code * 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 DRAWING NUMBER 89088 90038 (1) (2) (3) VISHAY DALE MODEL POWER RATING P85 C W RESISTANCE RANGE TOLERANCE % TEMPERATURE COEFFICIENT ppm/C MAXIMUM WORKING VOLTAGE (1) V 0.100 15 to 100K 0.01, 0.05, 0.1, 0.5, 1 5, 10 200 0.250 15 to 100K 0.05, 0.1, 0.5, 1 5, 10 200 PTF56..31, PTF56..32 (2) PTF65..16, PTF65..14 (2) This drawing can be viewed at: www.dscc.dla.mil/Programs/MilSpec/ListDwgs.asp?DocType=DSCCdwg Continuous working voltage shall be P x R or maximum working voltage, whichever is less. Hot solder dipped leads 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 Z Y X HISTORICAL TC CODE T-16 T-13 T-10 TEMPERATURE COEFFICIENT 5 ppm/C 10 ppm/C 15 ppm/C GLOBAL PART NUMBER INFORMATION New Global Part Numbering: PTF5620K500BYRE (preferred part numbering format) P GLOBAL MODEL PTF51 PTF56 PTF65 T F 5 RESISTANCE VALUE R= K = k M = M 15R000 = 15 500K00= 500 k 1M0000= 1.0 M 6 2 0 TOLERANCE CODE T = 0.01 % (4) Q = 0.02 % (4) A = 0.05 % B = 0.1 % C = 0.25 % D = 0.5 % F = 1 % K 5 0 0 B Y TEMP. COEFFICIENT Z = 5 ppm Y = 10 ppm X = 15 ppm 0 = Special R E PACKAGING SPECIAL EK = Lead (Pb)-free, bulk EA = Lead (Pb)-free, T/R (full) EB = Lead (Pb)-free, T/R (1000 pieces) BF = Tin/lead, bulk RE = Tin/lead, T/R (full) 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 Blank = Standard (Dash number) (Up to 3 digits) From 1 to 999 as applicable Note (4) Historical tolerance codes were BB for 0.01 % and BC for 0.02 % * Pb containing terminations are not RoHS compliant, exemptions may apply www.vishay.com 86 For technical questions, contact: ff2aresistors@vishay.com Document Number: 31019 Revision: 18-Nov-10 PTF Metal Film Resistors, High Precision, High Stability 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) Veff > 500 > 500 > 500 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 10-9/h <1 <1 <1 g 0.11 0.35 0.75 Failure Rate Weight (Max.) DIMENSIONS L 1.50 0.125 (1) (38.10 3.18) GLOBAL MODEL D d L 1 max. Note (1) 1.08 0.125 (27.43 3.18) if tape and reel DIMENSIONS in inches (millimeters) L D L1 max. d PTF51 0.150 0.020 0.070 0.010 (3.81 0.51) (1.78 0.25) 0.200 (5.08) 0.016 (0.41) PTF56 0.250 0.031 0.091 0.009 (6.35 0.79) (2.31 0.23) 0.300 (7.62) 0.025 (0.64) PTF65 0.375 0.062 0.145 0.016 (9.53 1.57) (3.68 0.41) 0.475 (12.07) 0.025 (0.64) PERFORMANCE TEST Life (at Standard Power Ratings) 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 TEST RESULTS (TYPICAL TEST LOTS) MIL-PRF-55182 Paragraph 4.8.18 1000 h rated power at + 85 C 0.04 % MIL-STD-202, Method 107 - 55 C to + 85 C 0.02 % MIL-R-10509, Paragraph 4.7.6 0.01 % MIL-PRF-55182, Methods 4.8.10 0.02 % MIL-PRF-55182, Paragraph 4.8.15 0.08 % MIL-STD-202, Methods 210 0.02 % 56 days at 40 C and 92 % RH 0.08 % MIL-STD-202, Methods 301 and 105 0.01 % MATERIAL SPECIFICATIONS Element Encapsulation Core Termination Document Number: 31019 Revision: 18-Nov-10 Precision deposited nickel chrome alloy with controlled annealing Specially formulated epoxy compounds. Coated construction Fire-cleanded high purity ceramic Standard lead material is solder-coated copper. Solderable and weldable per MIL-STD-1276, Type C. For technical questions, contact: ff2aresistors@vishay.com www.vishay.com 87 PTF Metal Film Resistors, High Precision, High Stability Vishay Dale LOAD LIFE SHIFT DUE TO POWER AND DERATING (AT 85 C) 120 HEAT RISE (C ABOVE AMBIENT) RATED POWER IN % 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 100 80 60 40 20 0 - 55 - 25 DERATING 0 25 50 75 100 85 125 150 175 200 AMBIENT TEMPERATURE IN C 120 PTF51 PTF56 100 PTF65 80 60 40 20 0 0 0.125 0.25 0.375 0.5 0.625 THERMAL RESISTANCE 0.75 0.875 1 1.125 APPLIED POWER IN W 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 61C over ambient, and you could see the resistance value shift roughly 1 % over the life of the part. TEMPERATURE COEFFICIENT OF RESISTANCE ppm/C ADDITION TO BASE TC IN THE EXPANDED PORTION OF THE TEMPERATURE RANGE 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 3 2 1 - 20 C TO + 85 C BASE TC LIMIT 0 - 50 - 40 - 30 - 20 EXPANDED OPERATING RANGE - 55 C TO - 20 C 90 100 110 120 130 140 150 X, Y or Z EXPANDED OPERATING RANGE - 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. www.vishay.com 88 For technical questions, contact: ff2aresistors@vishay.com Document Number: 31019 Revision: 18-Nov-10 Legal Disclaimer Notice Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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 in any datasheet or in any other disclosure relating to any product. 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Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. 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. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 11-Mar-11 www.vishay.com 1