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Trimmpotentiometer SM-42

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SURFACE MOUNT CERMET TRIMMERS

  • RoHS compliant
  • Fine adjustment is available
  • Automatic mounting is available (Taping)
  • Reflow soldering is available
  • Sealed construction (Washable)

ELECTRICAL CHARACTERISTICS

Power ratings 0.25 W (85 °C) 0 W (150 °C)
Nominal resistance range 10 Ω ~ 2 MΩ
Resistance tolerance ± 10 %
Resistance law Linear law (B)
Maximum input voltage DC300 V or power rating, whichever is smaller
Maximum wiper current 100 mA or power rating, whichever is smaller
Effective electrical turn 11 turns (SM-42), 5 turns (SM-43)
End resistance 1 % or 2 Ω , whichever is greater
C.R.V. 1 % or 3 Ω , whichever is greater
Operating temp. range −65 ~ 150 °C
Temp. coefficient ±100 10-6/°C maximum
Insulation resistance 100 MΩ minimum (DC500 V)
Dielectric strength AC600 V, 60 s
Net weight Approx. 0.17 g

MECHANICAL CHARACTERISTICS

Operating torque 17.6 mN·m {180 gf·cm} maximum
Mechanical stop Clutch action
Rotational life 200 cycles [ΔR/R ≦ ± (3 Ω +3 %)]
Thrust to shaft 5 N {0.51 kgf} minimum
Solderability 245 ± 3 °C, 2 ~ 3 s
Shear (Adhesion) 5 N {0.51 kgf} 10 s
Substrate bending Width 90 mm, bend 3 mm, 5 s, 1 time
Pull-off strength 5 N {0.51 kgf} 10 s

ENVIRONMENTAL CHARACTERISTICS

Test itemTest conditionsSpecifications
Thermal shock -65~125 °C (0.5 h), 5 cycles [ΔR/R ≦ 2%] [S.S. ≦ 1%]
Humidity -10~65 °C (Relative humidity 80~98%), 10 cycles, 240 h [ΔR/R ≦ 2%]
Shock 981 m/s2, 6 ms 6 directions for 3 times each [ΔR/R ≦ 1%] [S.S. ≦ 1%]
Vibration Amplitude 1.52 mm or Acceleration196 m/s2,10 ~ 2000 Hz, 3 directions, 12 times each [ΔR/R ≦ 1%] [S.S. ≦ 1%]
Load life 85 °C, 0.25 W, 1000 h [ΔR/R ≦ 3 % or 3 Ω] [S.S. ≦ 2 %]
Low temp. operation −65 °C, 2 h [ΔR/R ≦ 1 %] [S.S. ≦ 1 %]
High temp. exposure 150 °C, 250 h [ΔR/R ≦ 2 %] [S.S. ≦ 1 %]
Immersion seal 85 °C, 60 s No leaks (No continuous bubbles)
Soldering heat
  • Reflow : Peak temperature 255 °C(Please refer to the profile below.)
  • Manual soldering:350 ± 10 °C, 3 ~ 4 s
[ΔR/R ≦ 1%]

Δ R/R: Change in total resistance

S.S.: Setting stability
〈Reflow profile for soldering heat evaluation〉

MAXIMUM INPUT RATINGS

Nominal resistance values(Ω)Resistance codeMaximum input voltage(V)Maximum wiper current (mA)
10 100 1.00 100
20 200 2.00 100
50 500 3.53 70.7
100 101 5.00 50.0
200 201 7.07 35.4
500 501 11.2 22.4
1k 102 15.8 15.8
2k 202 22.4 11.2
5k 502 35.4 7.07
10k 103 50.0 5.00
20k 203 70.7 3.54
50k 503 112 2.24
100k 104 158 1.58
200k 204 223 1.12
500k 504 300 0.60
1M 105 300 0.30
2M 205 300 0.15
 The products indicated by ※ mark are manufactured upon receipt of order basis.

PART NUMBER DESIGNATION

SM-4TW100Ω(101)
Series name


Electrical turn
2:11 turns
3:5 turns
Form of packaging
T: Taping (Reel)
Blank: Bulk in plastic bag

Product shape (Shape of terminal)
W:J-hook(Top adjustmet)
X:Gull wing(Top adjustmet)
A:J-hook(Side adjustmet)
B:Gull wing(Side adjustmet)

Resistance value


Resistance code


 

LIST OF PART NUMBERS

Nominal resistance values 10Ω※, 20Ω※,,50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ, 200kΩ, 500kΩ, 1MΩ, 2MΩ
 ※ The above part numbers are all available with the respective combination of<Nominal resistance values>
※ Verify the above part numbers when placing orders.
※ Taping specification is not sold separately and must be purchased in reel units.
PART NUMBERElectrical turnAdjustment positionShape of terminalForm of packagingPieces in packageCAD
SM-42TW 11 Top adjustment J-hook Taping (Reel) 250 pcs./reel
SM-42W 11 Top adjustment J-hook Bulk in plastic bag 50 pcs./pack
SM-42X 11 Top adjustment Gull wing Bulk in plastic bag 50 pcs./pack
SM-42TX 11 Top adjustment Gull wing Taping (Reel) 250 pcs./reel
SM-42TA 11 Side adjustment J-hook Taping (Reel) 500 pcs./reel
SM-42A 11 Side adjustment J-hook Bulk in plastic bag 50 pcs./pack
SM-42B 11 Side adjustment Gull wing Bulk in plastic bag 50 pcs./pack
SM-42TB 11 Side adjustment Gull wing Taping (Reel) 500 pcs./reel

RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS

OUTLINE DIMENSIONS

Environmental Data

●Die oben genannten Inhalte können ohne vorherige Ankündigung geändert werden.

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