TM-7 3 TURNS CERMET TRIMMERS TM-7 INTERNAL STRUCTURE RoHS compliant 0 1 9 2 8 3 7 4 6 5 Part name Material Flammability FEATURES Shaft Zinc alloy, Nickel-plated 1 RoHS compliant Rubber cushion Silicone rubber 2 Fine setting is possible Extremely small backlash (In house comparison) Wiper Multi metal alloy 3 Base element Ceramic 4 Adhesive Epoxy UL94V-0 5 Terminal pin Copper, Tin-plated 6 Resistive element RuO2 cermet 7 Electrode Ag-Pd cermet 8 Rotor gear Polyamide UL94HB 9 0 Housing Polybutyleneterephthalate UL94V-0 PART NUMBER DESIGNATION T M - 7 E P 5 0 k ( 5 0 3 ) Series name Resistance code Terminal pin Resistance value ESn (Lead-free) Product shape PTop adjustment SSide adjustment WTop adjustmentXSide adjustment Please refer to the LIST OF PART NUMBERS when placing orders.TM-7 CERMET TRIMMERS <Nominal resistance values> LIST OF PART NUMBERS Form of packaging 50 100 200 500 1 k 2 k 5 k 10 k Adjustment Shape of terminal Pieces in position (Top view) package 20 k 50 k 100 k 200 k 500 k 1 M 2 M Plastic bag Fig. 1 2 Top adjustment 1 3 TM-7EP The above part numbers are all available as the standard item respectively with the combination of <Nominal resistance values> (Fig. 1). 2 Verify the above part numbers when placing orders. 1 3 TM-7EW 50 pcs./pack 2 1 3 TM-7ES Side adjustment ( Adjustment 3 1 direction) TM-7EX 2 ELECTRICAL CHARACTERISTICS MECHANICAL CHARACTERISTICS Mechanical turn 3 turns Nominal resistance range 50 ~ 2 M Operating torque 20 mNm 204 gfcm maximum Resistance tolerance 10 % Mechanical stop Clutch action Power ratings 0.5 W (70 C) 0 W (120 C) Rotational life 200 cycles R/R (2 +3 %) 10 N 1.02 kgf minimum B Terminal strength Resistance law Tensile strength Linear law Thrust to shaft 10 N 1.02 kgf minimum Maximum input voltage DC300 V or power rating, whichever is smaller Solderability 245 3 C, 2 ~ 3 s Maximum wiper current 100 mA or power rating, whichever is smaller Reference only Effective electrical turn 2.5 turns ENVIRONMENTAL CHARACTERISTICS End resistance 1 % or 2 , whichever is greater Test item Test conditions Specifications R/R 1 % C.R.V. 1 % or 3 , whichever is greater Thermal shock 65 ~ 125 C (0.5 h), 5 cycles S.S. 1 % 10 ~ 65 C (80 ~ 98 %), Humidity R/R 2 % Operating temp. range 55 ~ 120 C 10 cycles, 240 h 2 981 m/s , 6 ms Shock 6 directions for 3 times each -6 Temp. coefficient 100 10 /C maximum R/R 1 % (Amplitude) 1.52 mm or S.S. 1 % 2 Vibration (Acceleration) 196 m/s , 10 ~ 2000 Hz, 3 directions, 12 times each Insulation resistance 1000 M minimum (DC500 V) R/R 3 % Load life 70 C, 0.5 W, 1000 h S.S. 1 % Dielectric strength AC900 V, 60 s R/R 2 % Low temp. operation 55 C, 2 h S.S. 2 % Approx. 0.50 g (TM-7EP, EW) R/R 3 % Net weight High temp. exposure 120 C, 250 h Approx. 0.69 g (TM-7ES, EX) S.S. 2 % Immersion seal 85 C, 60 s No leaks (No continuous bubbles) Flow 260 3 C, 5 ~ 6 s, two times maximum Soldering heat R/R 1 % Manual soldering 380 10 C, 3 ~ 4 s R/RChange in total resistance S.S. Setting stability