High Precision Metal Film Leaded Resistor (UPF Series) Features Very tight tolerance down to 0.02% Extremely low TCR down to 5PPM/ High precision Excellent stability Applications Precision Equipment Measurement Equipment Construction Dimensions Unit : mm Type L D H d UPF25 UPF50 7.00.3 10.20.3 2.70.4 4.00.4 263 253 0.60.05 0.60.05 Weight (g) (1000pcs) 230 430 Derating Curve Power ratio (%) 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 Ambient Temperature ( ) 1773299-1 www.te.com REV A 1 High Precision Metal Film Leaded Resistor (UPF Series) Part Numbering UPF 50 B 1K0 V Product Type Power Rating Tolerance TCR UPF 25 : 1/4 W 50 : 1/2 W B : 0.1% Resistance 1R0 : 1 100R : 100 1K0 : 1,000 100K : 100,000 V : 5PPM Standard Electrical Specifications Item Power Rating Type Operating Temp. Range 70C 25 1/4W Max. Operating Voltage Max. Overload Voltage Resistance Range 0.02% 0.05% 0.1% TCR (PPM/C) 250V 500V 10 -500K 5 300V 600V 10 -500K 5 -55 ~ +125C 50 1/2W Operating Voltage V=(P*R) Environmental Characteristics Item Test Method Requirement Temperature Coefficient As Spec. Resistance value at room temperature and room of Resistance (T.C.R.) temperature+60C Short Time Overload (0.05%+0.05) Insulation Resistance > 1,000M Endurance (0.2%+0.05) JIS-C-5201-1 5.5 RCWV*2.5 or Max. overload voltage for 5 seconds MIL-STD-202F Method 302 Apply 500VDC for 1 minute MIL-STD-202F Method 108A 702, Max. working voltage for 1000 hrs with 1.5 hrs "ON" and 0.5 hrs "OFF" Damp Heat with Load MIL-STD-202F Method 103B 402C, 90~95% R.H. Max. working voltage for 1000 hrs with (0.2%+0.05) 1.5 hrs "ON" and 0.5 hrs "OFF" Solderability Resistance to Soldering Heat 95% min. Coverage MIL-STD-202F Method 208H 2455 for 5 seconds (0.05%+0.01) 35010C for 3 seconds or 2605C for 10 seconds Terminal Strength Tensile: 2.5kg Pulse Overload (0.1%+0.01) Tensile strength: for 10 sec. Torsional strength: Rotated through 360,5 rotations. JIS-C-5201-1 5.8 4 times RCWV for 10000 cycles with 1second "ON" and 25 seconds "OFF" Temperature Cycle (0.05%+0.05) -25(30min)/+85(30min), 5 cycles Resistance to Solvent No deterioration of coatings and markings JIS-C-5201-1 6.9 Trichroethane for 3 min. with ultrasonic Storage Temperature: 253C; Humidity < 80%RH 1773299-1 www.te.com REV A 2