Cover. Wiper. Base. Shaft

Transcription

1 TURNS INTERNAL STRUCTURE!! FEATURES Lead-free soldering, Cadmium-free Fine adjustment is possible Automatic mounting is possible (Taping) Flow/reflow soldering is possible Sealed construction (Washable) !!! Part name Housing Cover Rotor gear Clutch spring Terminal pin Sn-Cu Base element Resistive element Electrode Wiper O ring Base Shaft Material Ceramic RuO cermet Ag-Pd cermet Multi metal alloy Silicone rubber Epoxy Metal Flammability PPS UL-9V- Polyphenylenesulphide Stainless steel PPS UL-9V- Polyphenylenesulphide Stainless steel Copper alloy, Solder-plated Copper, Sn-Cu-plated UL-9HB UL-9V- CFCs (PBBOs, PBBs) CFCs, Halon, Carbon tetrachloride and designated bromic flame retardant PBBOs and PBBs are not used in our products. 9! PART NUMBER DESIGNATION S M - T A k Ω ( ) Series name Resistance code Terminal pin Blank E Sn-Cu (Lead-free) Form of packaging T Taping (Reel) Blank Bulk in vinyl bags Resistance value Product shape (Shape of terminal) A J-hook W J-hook B Gull wing Please refer to the LIST OF PART NUMBERS when placing orders.

2 SM- LIST OF PART NUMBERS Adjustment position Top adjustment Side adjustment Pieces in package Shape of terminal J- W ( J-hook ) ) J- A ( J-hook B ( Gull wing ) Form of packaging Taping (reel) Sn-Cu (Lead-free) Vinyl bag Sn-Cu (Lead-free) SM-TW SM-ETW SM-W SM-EW SM-TA SM-ETA SM-A SM-EA SM-TB SM-ETB SM-B SM-EB TW, ETW : pcs./reel TA, ETA : pcs./reel pcs./pack TB, ETB : pcs./reel ELECTRICAL CHARACTERISTICS Nominal resistance range Nominal 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 Reflow profile for soldering heat evaluation Temperature ( C) 8 C C + Peak : C Over C Pre Heating Zone 9 ± s Heating time ± s Ω ~ MΩ ± %. W (8 C) W ( C) Linear law DC V or power rating, whichever is smaller ma ma or power rating, whichever is smaller turns Ω % or Ω, whichever is greater Ω % or Ω, whichever is greater 6 ~ C ± -6 / C maximum MΩ minimum (DC V) AC6 V, 6 s Approx.. g Soldering Zone Reflow : twice Nominal resistance values A Ω A Ω Ω Ω Ω Ω kω kω kω kω kω kω kω kω kω MΩ MΩ MECHANICAL CHARACTERISTICS ENVIRONMENTAL CHARACTERISTICS S.S. Setting stability Fig. A The products indicated by A mark are manufactured upon receipt of order basis. Fig. The above part numbers are all available with the respective combination of <Nominal resistance values> (Fig. ). Verify the above part numbers when placing orders. Taping specification is not sold separately and must be purchased in reel units. Mechanical turn Operating torque Mechanical stop Rotational life Thrust to shaft Solderability Shear (Adhesion) Substrate bending Pull-off strength Test item Thermal shock Humidity Shock Vibration Load life Low temp. operation High temp. exposure Immersion seal Soldering heat 6 C, s or C, s Sn-Cu ± C C Flow : 6 ± C as the temperature in a pot of molten solder, immersion from head of terminal to backside of board, ~ 6 s, twice. Reflow : Peak temperature C (Please refer to the profile below.) Manual soldering ± C, ~ s turns mn m { gf cm} maximum Clutch action cycles [ R/R ± ( Ω+ %)] N {. kgf} minimum C, s Sn-Cu (Lead-free) ± C, ~ s N {. kgf} s Width 9 mm, bend mm, s, time N {. kgf} s Test conditions 6 ~ C (. h), cycles ~ 6 C ( 8 ~ 98 %), cycles, h 98 m/s, 6 ms 6 directions for times each (Amplitude). mm or (Acceleration) 96 m/s, ~ Hz, directions, times each 8 C,. W, h 6 C, h C, h 8 C, 6 s R/R { }Reference only Specifications [ R/R %] [S.S. %] [ R/R %] [ R/R %] [S.S. %] [ R/R %] [S.S. %] [ R/R %] [S.S. %] [ R/R %] [S.S. %] No leaks (No continuous bubbles) [ R/R %] Change in total resistance

3 SM- MAXIMUM INPUT RATINGS Nominal resistance values (Ω) Resistance code Maximum input voltage (V) Maximum wiper current (ma) A. A k.8.8 k.. k. 7.7 k.. k 7.7. k. k 8.8 k. k.6 M. M. A The products indicated by A mark are manufactured upon receipt of order basis. RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS SM-A SM-A, EA SM-B SM-B, EB. SM-W SM-W, EW.6 (Unit: mm) Note) The zero point is the center of mounting.

4 SM- OUTLINE DIMENSIONS Unless otherwise specified, tolerance : ±. (Unit : mm) SM-A, SM-EA Side adjustment φ., Slot.6W.D..6 CW rotation Note the terminal position t =. Resistance code & Production date code SM-B, SM-EB Side adjustment Resistance code & φ., Slot Production date code.6w.d.6. min. 6.. min SM-W, SM-EW Top adjustment t =..7 Resistance code & Production date code.9... φ., Slot.6.6W.D

5 SM- PACKAGING SPECIFICATIONS <Taping packaging specifications> Taping version (SM-TA, TB, ETA, ETB types) are packaged in pcs. per reel. Orders will be accepted for units of pcs., i.e.,,, pcs., etc. SM-TW, ETW types are packaged in pcs. per reel. Orders will be accepted for units of pcs., i.e.,, 7 pcs., etc. Taping version is boxed with one reel. Maximum number of consecutive missing pieces= Leader length and reel dimension are shown in the diagrams below. EMBOSSED TAPE DIMENSIONS End Empty Filled Empty mm min. pitches min. mm min. REEL DIMENSIONS JIS C 86- Conforms to JIS C 86- TA/TB EIAJ ET-7A TA/TB type : In accordance with EIAJ ET-7A (Unit: mm) Head ±.8 ±. ±. + (TA/TB/ETA/ETB) 7.± (TW/ETW) + 6 (TA/TB/ETA/ETB) 8± (TW/ETW) 8. (TA/TB/ETA/ETB).± (TA/TB/ETA/ETB) 8± (TW/ETW).± (TW/ETW) SM-TA/TB/ETA/ETB SM-TW/ETW φ. +. 8±..±..7±. ±. ±..±. Installation example (SM-A/EA) +. φ. ±. 7.±..7±. ±. ±..±. 6 Installation example (SM-W/EW)..7 <Vinyl bag packaging specifications> Unit of bulk in vinyl bag packaging is pcs. per pack. Boxing of bulk in vinyl bags is performed with pcs. per box.