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Trimmer potentiometer SM-42

●To buy this product, please go to the following Online Web stores.
To the Trimmer potentiometer “SM-42 series” page on the DigiKey online shop
To the Trimmer potentiometer “SM-42 series” page on the Mouser online shop
To the Trimmer potentiometer “SM-42 series” page on the Newark online shop
To the Trimmer potentiometer “SM-42 series” page on the RS components online shop

Surface Mount Cermet Trimmers (11 turns)

 

FeaturesFeatures
  • Fine adjustment is available
  • Automatic mounting is available (Taping)
  • Reflow soldering is available
  • Sealed construction (Washable)
  • Resin material is UL Recognized 94V-0
  • In this series, chemSHERPA-AI downloads are available,
    which can be used for REACH-SVHC surveys, etc.
  • Download chemSHERPA-AI from the list of P/N below

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-42TW100Ω(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


 
Nominal resistance values 10Ω*, 20Ω*, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ, 200kΩ, 500kΩ, 1MΩ, 2MΩ
The products indicated by * mark are manufactured upon receipt of order basis.The above part numbers are all available with the respective combination of Nominal resistance values.For the resistance value symbol, please refer to the maximum input rating table above.

Part Number Designation

 
 

 

 
 
Downloads of chemSHERPA (e.g. for REACH-SVHC surveys) are available below. *Need to log in to download. [chemSHERPA-AI latest ver. 2.09.00]
Part numberElectrical turnsAdjustment positionShape of terminalForm of packagingPackaging quantityREACH-SVHCCAD
SM-42TW 11 turns Top adjustment J-hook Taping
(Reel)
250 pcs./reel
SM-42W 11 turns Top adjustment J-hook Plastic bag 50 pcs./pack
SM-42TX 11 turns Top adjustment Gull wing Taping
(Reel)
250 pcs./reel
SM-42X 11 turns Top adjustment Gull wing Plastic bag 50 pcs./pack
SM-42TA 11 turns Side adjustment J-hook Taping
(Reel)
500 pcs./reel
SM-42A 11 turns Side adjustment J-hook Plastic bag 50 pcs./pack
SM-42TB 11 turns Side adjustment Gull wing Taping
(Reel)
500 pcs./reel
SM-42B 11 turns Side adjustment Gull wing Plastic bag 50 pcs./pack
Taping specification is not sold separately and must be purchased in reel units.

Recommended P.C.B. Pad Outline Dimensions

Outline Dimensions

Environmental Data

●The above contents and descriptions are subject to change without notice. 

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