specifications are subject to change without notice. specifications in this catalog are for reference. the formal specification sheets will be submitted upon request. copal elec t r o nic s sm-3/31 surface mount cermet trimmers rohs compliant fine adjustment is possible automatic mounting is possible (taping) reflow soldering is possible sealed construction (washable) features part name material flammability 1 2 3 4 5 6 7 8 9 rotor gear shaft terminal pin electrode base element resistive element housing adhesive internal structure part number designation t please refer to the list of part numbers when placing orders. s m - 3 ? t w 1 k ( 1 0 2 ) series name form of packaging t taping (reel) blank bulk in plastic bag electrical turn blank 11 turns 1 5 turns resistance code resistance value product shape (shape of terminal) a, w j-hook b gull wing 1 2 3 4 5 6 7 8 9 epoxy multi metal alloy rohs compliant pps(polyphenylenesulphide) ul94-v-0 ceramic ag-pd cermet ruo cermet 2 ? ul94-hb equivalent wiper copper alloy, sn-cu-plated polyamide ul94-v-0 ? ? brass, nickel-plated
specifications are subject to change without notice. specifications in this catalog are for reference. the formal specification sheets will be submitted upon request. copal elec t r o nic s 11 5 top adjustment side adjustment top adjustment side adjustment pieces in package electrical turns adjustment position shape of terminal form of packaging taping (reel) plastic bag list of part numbers w a b (j-hook) (j-hook) w a b (j-hook) (j-hook) (gull wing) (gull wing) sm-3tw sm-3w sm-3ta sm-3a sm-3tb sm-3b sm-31tw sm-31w sm-31ta sm-31a sm-31tb sm-31b 500 pcs./reel 50 pcs./pack a nominal resistance values ? electrical characteristics mechanical characteristics environmental characteristics 50 100 200 500 1 k 2 k 5 k 10 k 20 k 50 k 100 k 200 k 500 k 1 m 2 m fig. 1 t the above part numbers are all available with the respective combination of (fig. 1). t verify the above part numbers when placing orders. t taping specification is not sold separately and must be purchased in reel units. sm-3/31 surface mount trimmers reflow profile for soldering heat evaluation ? reflow : two times maximum peak : 250 over 230 c pre heating zone 180 c ( c) 250 200 150 100 50 150 c 90 30 s 30 10 s soldering zone heating time temperature c +5 0 soldering heat [ ? r/r ? 1 %] reflow : peak temperature 255 c (please refer to the profile below.) manual soldering 350 10 c, 3 ~ 4 s operating torque mechanical stop rotational life thrust to shaft solderability shear (adhesion) substrate bending pull-off strength 5 mnm {51 gfcm} maximum clutch action 200 cycles [ ? r/r ? (2 + 3 %)] 5 n {0.51 kgf} minimum 245 3 c, 2 ~ 3 s 5 n {0.51 kgf} 10 s width 90 mm, bend 3 mm, 5 s, 1 time 5 n {0.51 kgf} 10 s { } reference only nominal resistance range resistance tolerance power ratings resistance law maximum input voltage maximum wiper current effective electrical turn end resistance c.r.v. operating temp. range temp. coefficient insulation resistance dielectric strength net weight 50 ~ 2 m 20 % 0.125 w (70 c) 0 w (150 c) linear law dc200 v or power rating, whichever is smaller 100 ma or power rating, whichever is smaller 11 turns (sm-3) / 5 turns (sm-31) 1 % or 3 , whichever is greater 3 % or 3 , whichever is greater ? 65 ~ 150 c 100 10 -6 /c maximum 100 m minimum (dc500 v) ac600 v, 60 s approx. 0.10 g test item test conditions specifications thermal shock humidity shock vibration load life low temp. operation high temp. exposure immersion seal ? r/r change in total resistance s.s. setting stability ? 65 ~ 150 c (0.5 h), 5 cycles [ ? r/r ? 2 %] [s.s. ? 2 %] ? 10 ~ 65 c (80 ~ 98 %), 10 cycles, 240 h [ ? r/r ? 3 %] 981 m/s 2 , 6 ms 6 directions for 3 times each [ ? r/r ? 1 %] [s.s. ? 1 %] amplitude 1.52 mm or acceleration 196 m/s 2 , 10 ~ 2000 hz, 3 directions, 12 times each 70 c, 0.125 w, 1000 h [ ? r/r ? 3 %] [s.s. ? 2 %] ? 65 c, 2 h [ ? r/r ? 2 %] [s.s. ? 2 %] 150 c, 250 h [ ? r/r ? 3 %] [s.s. ? 2 %] 85 c, 60 s no leaks (no continuous bubbles)
1.3 1.3 1.6 2.43 2.8 0.9 1.3 1.6 1.6 3.12 2.8 0 0 0.9 1.3 1.6 1.6 4 2.8 0 0.9 1.3 2 2 4.4 2.8 0 0.9 sm-3/31 surface mount trimmers maximum input ratings recommended p.c.b. pad outline dimensions nominal resistance values ( ) resistance code maximum input voltage (v) maximum wiper current (ma) 50 500 2.50 50.0 100 101 3.53 35.4 200 201 5.00 25.0 500 501 7.91 15.8 1 k 102 11.2 11.2 2 k 202 15.8 7.91 5 k 502 25.0 5.00 10 k 103 35.4 3.54 20 k 203 50.0 2.50 50 k 503 79.1 1.58 100 k 104 112 1.12 200 k 204 158 0.79 500 k 504 200 0.40 1 m 105 200 0.20 2 m 205 200 0.10 (unit : mm) sm-3w/31w sm-3a/31a sm-3b/31b note) the zero point is the center of mounting. t also available to place as the above. sm-3w/31w top adjustment 1 2 3 2.3 3.2 3.9 0.4w 1.3l 0.3d 0.8 0.8 4.2 3.5 resistance code & production date code 2.8 0.6 1 3.9 cw rotation 1 2 3 t note the terminal position. outline dimensions unless otherwise specified, tolerance : 0.3 (unit : mm) w specifications are subject to chan g e without notice.
specifications are subject to change without notice. specifications in this catalog are for reference. the formal specification sheets will be submitted upon request. copal elec t r o nic s sm-3/31 surface mount trimmers sm-3a/31a side adjustment 1 2 3 2.5 3.9 0.4w 1.3l 0.3d 3 C 0.8 3.4 3 C 0.8 4.4 resistance code & production date code 2.8 2 C 0.6 1 3.9 sm-3b/31b side adjustment 1 2 3 2.5 3.9 0.4w 1.3l 0.3d 3.4 5.3 resistance code & production date code 2.8 2 C 0.6 1 3.9 cw rotation 1 2 3 t note the terminal position. outline dimensions unless otherwise specified, tolerance : 0.3 (unit : mm) packaging specifications taping version is packaged in 500 pcs. per reel. orders will be accepted for units of 500 pcs., i.e., 500, 1000, 1500 pcs., etc. taping version is boxed with one reel. maximum number of consecutive missing pieces = 2 leader length and reel dimension are shown in the dia-grams below. embossed tape dimensions reel dimensions conforms to jis c 0806-3 in accordance with eiaj et-7200a (unit: mm) empty filled empty 40 mm min. 20 pitches min. 400 mm min. direction of feed head end leader 60 +1 0 180 15.4 1 21 0.8 13 0.2 2 0.5 13 +1 0 0 C1.5
specifications are subject to change without notice. specifications in this catalog are for reference. the formal specification sheets will be submitted upon request. copal elec t r o nic s 4 0.1 0.4 0.1 1.75 0.1 12 +0.3 C0.1 5.5 0.05 4.7 installation example (sm-3w) cross section a-a a a 8 0.1 3 2 1 1.5 +0.1 0 2 0.05 sm-3/31 surface mount trimmers sm-3tw/31tw 4 0.1 0.4 0.1 (sm-3a) 3.9 2 0.05 8 0.1 1.75 0.1 5.5 0.05 12 +0.3 C0.1 a 1.5 +0.1 0 a 3 1 2 cross section a-a installation example sm-3ta/31ta 4 0.1 0.4 0.1 (sm-3b) installation example 3.9 2 0.05 8 0.1 1.75 0.1 5.5 0.05 12 +0.3 C0.1 a 1.5 +0.1 0 a 3 1 2 cross section a-a sm-3tb/31tb unit of bulk in a plastic bag is 50 pcs. per pack. boxing of bulk in a plastic bag is performed with 200 pcs. per box.
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