KSC Miniature Tact Switch for SMT KSC Miniature tact switch designed to be surface mounted (SMT) on PCB, single pole, normally open contact. Available in 4 versions: KSC1: without actuator KSC2; with short soft actuator KSC3: with short hard actuator KSC4: with long soft actuator 2 types of KSC4: standard with yellow actuator: 70 shore low force with red actuator: 50 shore Main features @ With or without actuator Positive tactile feedback Operating force from 1.1N [110 grams] to 5.5N [550 grams] Typical travel from 0.3 mm [.118 inch] to 0.75 mm [.295 inch] Tin plated terminals for easy soldering Gullwing or J-type terminals Adapted to the main soldering methods of surface mounted components (SMT) This product is totally washable and sealed according to EIA - RS-448-2 test and IP 67 (dust tight, protected against the effects of immersion in water) Can be used in the major automatic insertion machines Delivered in thermoformed tape and reels of 2000 pieces, KSC4 of 1000 pieces Note: Identification The 4th and 5th digits of KSC code are stamped on the metallic top plate The other characteristics of the code can actually be seen on the product. Example fit Y 20-1] rt Ran 2 = 1.6N [160 grams] and 200 k operations temperature 40C to + 85C 1 A-14 Conetn Function Momentary action Contact arrangement 1 make contact = SPST, NO Terminals PC pins: J-type or gullwing-type Mounting SMT {surface mount technology) Electrical data S = silver G= gold Switching power min./max. 1VA 0.2 VA Switching voltage min./max. 20 mV/50 V 20 mV/50 V Switching current min./max. 1 mA/50 mA 1 mA/10 mA Dielectric strength (50 Hz, 1 Min.) 2 250V 2 250V Operating life with max. switching power See table next page Contact resistance, initial = 100 mQ = 100 mQ Insulation resistance (100 V) 2 1090 210Q Bounce-time = ims = ims Mechanical data Total travel See table next page Max. operating force 40N [4000 grams] Further data Contact material Silver Gold Insulation material See table next page Operating temperature ~ 40C to + 86C 40C to + 126C Storage temperature 56C to + 85C 58C to + 125C Packaging: KSC1, KSC2 and KSC3 are delivered on continuous tape in reels of 2000 pieces, KSC4 in reels of 1000 pieces. Dimensions of reels according to EIA RS481 or IEC 2863. External diameter 330 mm + 2 mm. Soldering: Depending on the application of the KSC, this component is suited to the following methods: Flow soldering - The KSC terminals being SnPb plated over a Nickel barrier, the use of slightly activated flux is suitable. - Soldering on double wave machine. The bath temperature is generally 255C + 5C and soldering time < 5 sec. Cleaning according to usual washing processes. Vapor phase reflow soldering Temperature: 215C; Duration: up to 60 seconds Infrared reflow soldering Temperature: 200C, with peak of 230C during 10 to 15 seconds Conductive inks Ordering code: see page A-17. Silver based inks can be used for the connection of KSC on PC board. Curing conditions depend on the type of conductive ink. Sa,KSC Miniature Tact Switch for SMT Selection guide KSC1 KSC2 KSCS KSC4 Actuator without short, soft short, hard long, soft Actuator material - silicone thermoplastic silicone Housing material thermopiastic thermoplastic thermoplastic thermoplastic Operating force (Newton) Travel min./max. mm finch} See table below. Life expectancy {k operations) Total height above P.C.B 2.5:mm [.0984 inch] 3.5 mm [138 inch] 3.5 mm [138 inch] 5.2 mrn [.205 inch] EIA 448-2 YES YES YES YES Tightness/washability Gold: high YES YES YES YES temperature version Terminal plating tin plated tin plated tin plated tin plated Terminal type: GorJ Gord Gor J GorJ G (gullwing), J (J type) Soldering process YES YES YES YES infrared/double wave/ vapor phase max. 265C/5 seconds Operating force / operating life / travel table Type") Operating force FA?) Operating life Travel to make N. [grams] k operations mm finch] KSC121 1.6 [160] 200 0.25 [.00984]":* KSC141 3.0 [300] 200 0.30 [.0118]"5" K$C151 .5 [550} 100 0.30 [.0118] 25 KSC221 2.0 [200) 500 0.35 [.0138}:33 KSC241 3.5 [850 300 0.40 [.0157]23% KSC321 1.6 ]160} 500 0.20 [.00787]"5 KSC341 3.0 [300] 300 0.20 [.00787]"0" K$C351 5.5 [550] 100 0.25 [.00984]"5 KSC401 (50 shore) 1.1 [110] 5000 0.50 [.0197] 222 KSC411 1.41140] 1000 0.35 [.0138]28% KSC421 1.7 [170] 1000 0.50 [0197] 202 KSC441 3.2 [320] 300 0.75 [.0296] "02 ') Last digit: 1 = silver contacts, 3 = gold contacts ?\ Tolerance of operating force FA is + 25%; operating force values of gold contact types higher: + 0.3N [80 grams] Note: Operating life is given for tested forces corresponding to the actuator force value x 2. PCB layout Gullwing type a [.0394] {-228] a} 98 mani | 12 mini [472] 1 -; 4 [157] J type & 157] ] t 5 maxi [118]KSC Miniature Tact Switch for SMT Dimensional Drawings - Dimensions in mm finch] J type: internal.bending Gullwing type: external bending 35 [138] 25 25 [.0984) 0 [394] r 04 9 = l [.00349] = Ny _ x 62 4 L187] ay 07 624 07 (24a [.0276] [157] - [vA N [.244] \, [.0276} 1 @3 [118] 1 03 L118} 62 [248 62 [244] $3 1118) @3 [118] | La T ae Aa 25 {0964 35 [138] a [.00349] 0.1 {.00349] Of B ee A t 07 mM E or 41197 [.0276] 62 = 4-157] - LO7 y A a MX [.244} \ 44 a [.0276} 62 [244] 62 [244] 68 [268 0 [394 a) 08 @ 281.11] [0157] [0157] , 25 [.0984] 35 [.138] A-16 x 07 ' [.0276} d 26 _ [102] 52 25 [205] [.0984}} + oO 04 00349 B ot l , 2, $187 A aa 6241571 Te ray, of Hh (244), $4 62 1.244 [26KSC Miniature Tact Switch for SMT Dimensional Drawings Actuator - Dimensions in mm [inch] ues KSC 1 KSC 2- KSC 3-KSC 4 ae max ge max i A: axis of KSC ut 4 t ! { { R02 / \ Smooth surface \ Smooth surface [R 00787] (ait eeeeteee eee abdbbethateehteabeddcbatetel @ 2 [07871 re 023.) ran (a8 Dimensional Drawings Packaging - Dimensions in mm [inch] KSC4 12 12 em, a A Tepe o. 1 ' 1.75 writedowns | Stam 80 FOS 6 US OHS T oT : | | ie == Bt -4b--@ de ---h--O- fh ---H--@- fh--- fl -@-- wid : : tv Z root a ' ' \ p45 ' he ous = |_A 66 D115 ; tt @ Eat t tt KSC1, KSC2, KSC3 Ht g| A... Latha do [ all os on ; fe \ 6 6--6-26--6-- ek babe. mr : 4 I aia! iat 175 (078 2,2, 10787 wie [.0689] W A B C D KSC1 | 2.9 mm [.114 inch] KSC1, KSC2, K8C3 | Gitype| 16 [.630] | 10.4 [.409}] 7.5[,.295] | 8 [.315] KSC2 | 3.7 mm _[.148 inch] Jtype | 12.472] | 7.2[.283]/ 5.56217) | 8 [.315] KSC3 | 3.7 mm [.146 inch] KSC4 Gtype| 16 [.630] | 10.5 [.413]/ 7.5 [295] | 12 [472] KSC4 | 5.5 mm [.247 inch] Jtype | 16 [630] | 7.3 [.287]| 7.5 295] | 12 [472] Ordering code 1 2 3 4 5 6 a Example:| KS Cc 4 2 1 3 | Actuator: 1 = without; 2 = short, soft actuator; 3 = short, hard actuator; 4 = long, soft actuator 4 Operating force and operating life: 0, 1, 2, 4,5 see table page A-15: operating force 5 Ambient temperature: 1 = 40C to + 85C (low, silver contacts), 3 =- 40C to + 125C (high, gold contacts) 6 | Terminals: J = J type, G = gullwing > 7 B 1__| Designation: KS ~ A J A 2 Type: C (for SMT) > 7 Housing material: B = Thermoplastic >