LTR1 ~ 2 & ltm1 ~ 2 ultra-miniature illuminated pushbutton switches rohs compliant series conductive rubber contact ltr type mettal contact ltm type features 1. full surface illumination (ltm2, ltmg2, ltr2 series miniature, low-cost switch with full surface illumination by led. buttons available in sq uare shape (7.5/10mm sq.) and round shape (7.5/10mm dia. ) in 3 colors (red, green, yellow). non-illuminated switches also available (ltm1, ltmg1, LTR1 series). 2. two types of contacts ltr series: conductive rubber contact for soft tactile feel. ltm/ltmg series : metal contact for sharp tactile feel. 3. pc board mount terminal pitch is in inches (multiples of 2.54 mm) for all models. the unique terminal shape prevents the terminals from coming loose from the pc board during dip soldering. 4. enhanced resistance to soldering heat improved terminal structure protects the contacts from soldering heat. in addition, each pole has two terminals which can be used as a jumper wire. 5. compatible with lead-free soldering (ltm series) heat-resistance resin fo r lead-free soldering. specications rating ltr 10ma 12vdc max. 10 a min. ltm 1va max. 50ma max.48vdc max 0.5ma min. ltmg 1va max. 50ma max.48vdc max. 10 a min. initial contact resistance ltr 500
max. 1ma 2vdc at 1.47n 150gf ? ltm 100m
max 1.5ma 200 vac at 1.96n 200gf ? dielectric strength 250vac 1 minute * o t v m b u j p o 3 f t j t u b o d f 100m
min yyyyyyyyy 100vdc & m f d u s j d b m - j g f ltr 100,000 operations ltm 300,000 operations $ p o u b d u # p v o d f ltr 3 msec. max. initial value ltm 10 msec. max. initial value 5 s b w f m ltr 1 mm ltm 0.25 mm 0 q f s b u j o h ' p s d f b u q f b l g p s d f ltr 0.98 ? 0.39n ltm 1.37 ? 0.39n 0 q f s b u j o h 5 f n q f s b u v s f 3 b o h f 25 ? 70 ? 4 u p s b h f 5 f n q f s b u v s f 3 b o h f 40 ? 70 ?
ltr ~ ltm part numbering lt m g 2 ? 01 ? l2 type of contacts and contact plating code type of contact contact plating r conductive rubber contact gold plated m metal contact silver plated mg metal contact gold plated note : the contacts of ltr series are all gold-plated. structure fig. 12 structure without led non-illuminated with led table of part numbers series ltm ltr $ p o u b d u q m b u j o h silver plated gold plated gold plated / p o j m m v n j o b u f e y ltm1 01 y ltmg1 01 y LTR1 01 - & % d p m p s red y ltm2 01 l2 y ltm2 31 l2 ltmg2 01 l2 y ltr2 01 l2 y ltr2 31 l2 green y ltm2 01 l5 y ltm2 31 l5 ltmg2 01 l5 y ltr2 01 l5 y ltr2 31 l5 bule ltm2 01 l6 ? ltmg2 01 l6 ltr2 01 l6 yellow y ltm2 01 l8 y ltm2 31 l8 ltmg2 01 l8 y ltr2 01 l8 y ltr2 31 l8 pc hole layouts ty p e LTR1/ltm1 ltr2/ltm2 dimensions top view operating force vs. stroke characteristics led speci cations y ltr2 ~ ltm2 ~ ltmg2 led liminance symbol led luminance 01 normal luminance ) 31 high luminance ) packaging speci cations zipper plastic bag series code type of contact contact plating led luminance structure led color fig .a code color luminance forward current (i f ) forward v (v f ) reverse voltage (v r ) nom. max. l2 red normal 30ma 2.0v 2.5v dc5v l5 green 25ma 2.2v 2.5v dc5v l6 bule 30ma 3.8v 4.5v dc5v l8 yellow 30ma 2.1v 2.5v dc5v l2 red high 30ma 1.95v 2.5v dc5v l5 green 30ma 3.2v 4.0v dc5v l8 yellow 30ma 2.0v 2.5v dc5v ? inquiry products. made to order products.
part no. switching function circuit diagrams ltm2 01 l ltmg2 01 l ltm2 31 l off on connecting terminals ? led circuit on momentary led color to be specied in . refer to "table of part numbers" on p.171. ltr conductive rubber contact ltm metal contact part no. switching function circuit diagrams LTR1 - 01 off on connecting terminals ? part no. switching function circuit diagrams ltm1 01 ltmg1 01 off on connecting terminals ? LTR1 ltm1 ltm2 ltr2 terminal numbers are not shown on the switch. terminal numbers are not shown on the switch. terminal numbers are not shown on the switch. terminal numbers are not shown on the switch. spst without led non-illuminated spst without led non-illuminated spst with led spst with led ? ? ? ? ? ' 6 + *y 4 0 , 6 u 4 5 3 0 , & ? ? ? ? ? ? u ' 6 + *y 4 0 , 6 4 5 3 0 , & ' 6 + * 4 0 , 6 ? ? ? ? ? u 4 5 3 0 , & ? ? ? ? ? ? u 4 5 3 0 , & ' 6 + * 4 0 , 6
ltr ~ ltm soldering series ltm ltr . b o v b m t p m e f s j o h 380 ? max. 3sec. max. 380 ? max. 3sec. max. " v u p t p m e f s j o h 275 ? max. 6sec. max. 265 ? max. 6sec. max. preheating in the ow line should be 80~120 ? , 120 sec. max. do not dip solder the switches with color buttons or mounting frames attached. soldering heat may deform the accessories or cause ingress of ux. dimensions of assembled switch flux cleaning ? solvents : fluorine or alcohl type ? ltm and ltr series are not washable. to wash the pc board, clean the soldering surface of the pc board with a brush so that the switch is not exposed to the cleaning solution. ? after soldering, wait until the temperature of the terminals cool down to 90 ? or below or until the parts are exposed to room temperature for more than 5 min. before washing. ambient conditions ? in case of switches with silver-plated contacts, do not use in an environment where there is corrosive gas such as sulfuric or ammonia gas which may a ect the silver plating. ? ltm and ltr series are open-structure switches and should not be used in a dusty environment. precautions led circuit accessories mounting 6 t f 7 ' 7 u p d b m d v m b u f * ' n " & y b n q m f & 7
$ v s s f o u u p c f b q q m j f e u p u i f - & % n v t u c f m p x f s u i b o u i f g p s x b s e d v s s f o u * '
j o e j d b u f e j o u i f - & % 4 q f d j p d b u j p o t p g f b d i t x j u d i f t 3 f t j t u b o d f w b m v f 3 t i p v m e c f d b m d v m b u f e v t j o h u i f g p s n v m b p o u i f s j h i u m j o h u i f . p v o u j o h ' s b n f b m m u i f n p v o u j o h g s b n f i b u u i f u b c p o u i f g s b n f o u i f t b n f e j s f d u j p o b t t m p u p o u i f t x j u d i * o t u b m m j o h u i f # v u u p o * o t u b m m u i f c v u u p o t p u i b u u i f q s p u s v t j p o t p o u i f t x j u d i p u j o u p u i f t r v b s f i p m f t p o u i f c v u u p o 5 i f n p v o u j o h g s b n f d b o o p u c f j o t u b m m f e x j u i u i f t x j u d i c v u u p o j o t u b m m f e 3 3
& 7 ' * ' button size a size b ? 10 ; 10mm sq. ? 10 10mm sq. ? 12.5 12.5mm sq. 10 ; 10mm dia. 10 10mm dia. 12.5 12.5mm dia. ? 7.5 ; 7.5mm sq. ? 7.5 7.5mm sq. ? 10 10mm sq. 7.5 ; 7.5mm dia. 7.5 7.5mm dia. 10 10mm dia.
ltr ~ ltm optional accessories ? sold separately - 1 b s u / b n f color button % j n f o t j p o t " # 4 / p o j m m v n j o b u f e u z q f % b s l h s b z 140007480168 140007480178 140007480188 140007480198 ( s b z 140007480169 140007480179 140007480189 140007480199 - j h i u h s b z 140007480170 140007480180 140007480190 140007480200 * w p s z 140007480171 140007480181 140007480191 140007480201 3 f e 140007480172 140007480182 140007480192 140007480202 ( s f f o 140007480174 140007480184 140007480194 140007480204 # m v f 140007480173 140007480183 140007480193 140007480203 * m m v n j o b u f e u z q f / p s n b m m v n j o b o d f $ m f b s 140007480422 140007480451 140007480505 140007480506 3 f e d m f b s 140007480205 140007480208 140007480211 140007480214 ( s f f o d m f b s 140007480206 140007480209 140007480212 140007480215 : f m m p x d m f b s 140007480207 140007480210 140007480213 140007480216 ) j h i m v n j o b o d f $ m f b s 140007480554 140007480558 140007480562 140007480566 3 f e d m f b s 140007480551 140007480555 140007480559 140007480563 ( s f f o d m f b s 140007480552 140007480556 140007480560 140007480564 : f m m p x d m f b s 140007480553 140007480557 140007480561 140007480565 1 b s u / b n f mounting frame % j n f o t j p o t " # 4 % b s l h s b z 140000340170 140000340171 140000340168 140000340169 ( s b z 140000340179 140000340182 140000340173 140000340176 - j h i u h s b z 140000340180 140000340183 140000340174 140000340177 * w p s z 140000340181 140000340184 140000340175 140000340178 mounting frame is common to both illuminated and non-illuminated switches. 1 b s u / b n f color button % j n f o t j p o t " # 4 * m m v n j o b u f e u z q f - & % m v n j o b o d f normal luminance high luminance normal luminance high luminance ? 4 d s f f o d p m p s ? $ p m p s clear clear % b s l h s b z 140007480452 140007480567 140007480459 140007480574 ( s b z 140007480453 140007480568 140007480460 140007480575 - j h i u h s b z 140007480454 140007480569 140007480461 140007480576 * w p s z 140007480455 140007480570 140007480462 140007480577 3 f e 140007480456 140007480571 140007480463 140007480578 ( s f f o 140007480457 140007480572 140007480464 140007480579 # m v f 140007480458 140 007480573 140007480465 140007480580 optional accessories
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