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Trimmpotentiometer SM-31

Multiturn Surface Mount Cermet Trimmers (5 turns)

 

FeaturesFeatures
  • Multiturn type: 5 turns
  • 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 0.125 W (70 °C) 0 W (150 °C)
Nominal resistance range 50 Ω ~ 2 MΩ
Resistance tolerance ± 20 %
Resistance law Linear law (B)
Maximum input voltage 200 VDC or power rating, whichever is smaller
Maximum wiper current 100 mA or power rating, whichever is smaller
Effective electrical turn 5 turns (cf. SM-3: 11 turns)
End resistance 1 % or 3 Ω , whichever is greater
C.R.V. 3 % or 3 Ω , whichever is greater
Operating temp. range -65 ~ 150 °C
Temp. coefficient ±100 10-6/°C maximum
Insulation resistance 1000 MΩ minimum (500 VDC)
Dielectric strength 600 VAC, 60 s
Net weight Approx. 0.10 g

Mechanical Characteristics

Operating torque 5 mN·m {51 gf·cm} maximum
Mechanical stop Clutch action
Rotational life 200 cycles [ΔR/R ≦ ± (2 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 ≦ 3%]
Shock 981 m/s2, 6 ms 6 directions for 3 times each [ΔR/R ≦ 1%] [S.S. ≦ 1%]
Vibration Amplitude 1.52 mm or Acceleration 196 m/s210~2000 Hz, 3 directions, 12 times each [ΔR/R ≦ 1%] [S.S. ≦ 1%]
Load life 70 °C, 0.125 W, 1000 h [ΔR/R ≦ 3 %] [S.S. ≦ 3 %]
Low temperature operation -65 °C, 2 h [ΔR/R ≦ 2%] [S.S. ≦ 2%]
High temperature exposure 150 °C, 250 h [ΔR/R ≦ 3%] [S.S. ≦ 2%]
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)
50 500 2.50 50.0
100 101 3.53 35.4
200 201 5.00 25.0
500 501 7.91 15.8
1k 102 11.2 11.2
2k 202 15.8 7.91
5k 502 25.0 5.00
10k 103 35.4 3.54
20k 203 50.0 2.50
50k 503 79.1 1.58
100k 104 112 1.12
200k 204 158 0.79
500k 504 200 0.40
1M 105 200 0.20
2M 205 200 0.10

Part Number Designation

SM-31TW500Ω(501)
Series name


Electrical turn
Blank: 11 turns
1: 5 turns
Form of packaging
T: Taping (Reel)
Blank: Bulk in plastic bag
Product shape /  Shape of terminal
W: Top adjustment / J-hook
A: Side adjustment / J-hook
B: Side adjustment / Gull wing
Resistance value


Resistance code


 
Nominal resistance values 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. For the resistance value symbol, please refer to the Maximum Input Rating table above.

List of Part Numbers

 
 

 

 
 
CAD and chemSHERPA-AI (a material data sheet ideal for REACH surveys, etc. / version: 2.10.00 or 2.09.00 available) can be downloaded from the button for each P/N in the table below. *Need to log in to download.
Part No.Electrical
turns
Adjustment
position
Shape of
terminal
Form of
packaging
Packaging
quantity
Material dataCAD
SM-31TW 5 turns Top adjustment J-hook Taping
(Reel)
500 pcs./reel
SM-31W 5 turns Top adjustment J-hook Plastic bag 50 pcs./pack
SM-31TA 5 turns Side adjustment J-hook Taping
(Reel)
500 pcs./reel
SM-31A 5 turns Side adjustment J-hook Plastic bag 50 pcs./pack
SM-31TB 5 turns Side adjustment Gull wing Taping
(Reel)
500 pcs./reel
SM-31B 5 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

Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)

Packaging Specifications

〈Bulk pack specifications〉

Taping version is packaged in 500 pcs. per reel.
Orders will be accepted for units of 500 pcs., i.e., 500, 1000, 1500 pcs., etc.
Taping version is boxed with one reel.
Maximum number of consecutive missing pieces = 2.
Leader length and reel dimension are shown in the diagrams below.
  • ●Embossed tape dimensions
  • ●Reel dimensions
    (Unit: mm)
    (Conforms to JIS C 0806-3 , In accordance with EIAJ ET-7200A)
(Unit: mm)

〈Bulk pack specifications〉

Unit of bulk in a plastic bag is 50 pcs. per pack
Boxing of bulk in a plastic bag is performed with 200 pcs. per box.

Environmental Data

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

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