www.vishay.com 32 PTF vishay dale document number 31019 revision 06-feb-03 for technical questions, contact ff2aresistors@vishay.com 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 model power rating limiting element temperature tolerance resistance p 85 c voltage max. coefficient range wv ppm/ c% ? PTF-51 0.05 200 5, 10, 15 0.02, 0.05, 0.1, 0.25, 0.5, 1 15r - 100k 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 standard electrical specifications ? marking: print-marked-model, value, tolerance, tc, date code PTF-56 20k5 b t-13 r36 model resistance tolerance temperature coefficient packaging PTF 51 value f = 1% ppm/ c see appropriate PTF 56 ? d = 0.5% t-10 = 15 catalog or web page PTF 65 62r2 = 62.2 c = 0.25% t-13 = 10 r36 = reel 1m00 = 1m b = 0.1% t-16 = 5 b14 = bulk a = 0.05% bc = 0.02% bb = 0.01% ordering information parameter unit PTF-51 PTF-56 PTF-65 rated dissipation at 85 c w 0.05 0.125 0.25 limiting element voltage v 200 300 500 insulation voltage (1 min) v eff > 500 > 500 > 500 thermal resistance k/w < 1300 < 520 260 terminal strength, axial n > 150 > 50 > 50 insulation resistance ? 10 11 10 11 10 11 category temperature range c - 55/+ 150 - 55/+ 150 - 55/+ 150 failure rate 10 -9 /h < 1 < 1 < 1 weight (max) g 0.11 0.35 0.75 technical specifications
www.vishay.com 33 PTF vishay dale document number 31019 revision 06-feb-03 for technical questions, contact ff2aresistors@vishay.com dimensions model dimensions in inches [millimeters] ldl 1 max d PTF-51 0.150 0.020 0.070 0.010 0.200 0.016 [3.81 0.51] [1.78 0.25] [5.08] [0.41] PTF-56 0.250 0.031 0.091 0.009 0.300 0.025 [6.35 0.79] [2.31 0.23] [7.62] [0.64] PTF-65 0.375 0.062 0.145 0.016 0.475 0.025 [9.53 1.57] [3.68 0.41] [12.07] [0.64] test conditions of test test results endurance mil-prf-55182 para. 4.7.17 0.04% 1000 hours rated power at + 85?c thermal shock mil-std-202, method 107 0.02% -55?c to + 85?c short time overload mil-r-10509, paragraph 4.6.6 0.01% low temperature operation mil-prf-55182, methods 4.7.9 0.02% moisture mil-std-202 method 106 0.08% resistance to soldering heat mil-std-202, methods 210 0.02% damp heat 56 days at 40?c and 92% rh 0.08% iec 60068-2.3 dielectric withstanding voltage mil-std-202, methods 301 & 105 0.01% performance material specifications element: precision deposited nickel chrome alloy with controlled annealing encapsulation: specially formulated epoxy compounds. coated construction core: fire-cleaned high purity ceramic termination: standard lead material is solder-coated copper. solderable and weldable per mil-std-1276, type c. metal film resistors, precision, ultra-high stability l 1 max. l d 1.50 0.125 [38.10 3.18] d -55 -25 0 25 50 75 85 100 125 150 175 200 ambient temperature in ? c derating rated power in % * 1.08 0.125 [27.43 3.18] if tape and reel 0 20 40 60 80 100 120
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