Trimmer potentiometer SM-43
Surface Mount Cermet Trimmers
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) |
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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 item | Test conditions | Specifications |
---|---|---|
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 |
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[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 code | Maximum 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-4 | 3 | T | W | 100Ω | (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 |
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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.
List of Part Numbers
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 number | Electrical turns | Adjustment position | Shape of terminal | Form of packaging | Packaging quantity | REACH-SVHC | CAD |
---|---|---|---|---|---|---|---|
SM-43TW | 5 turns | Top adjustment | J-hook | Taping (Reel) |
250 pcs./reel | ||
SM-43W | 5 turns | Top adjustment | J-hook | Plastic bag | 50 pcs./pack | ||
SM-43TX | 5 turns | Top adjustment | Gull wing | Taping (Reel) |
250 pcs./reel | ||
SM-43X | 5 turns | Top adjustment | Gull wing | Plastic bag | 50 pcs./pack | ||
SM-43TA | 5 turns | Side adjustment | J-hook | Taping (Reel) |
500 pcs./reel | ||
SM-43A | 5 turns | Side adjustment | J-hook | Plastic bag | 50 pcs./pack | ||
SM-43TB | 5 turns | Side adjustment | Gull wing | Taping (Reel) |
500 pcs./reel | ||
SM-43B | 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
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Outline Dimensions
![](/file/img/sm42_out.png)
![](/file/img/sm42_out2.png)
![](/file/img/sm42_out3.png)
![](/file/img/sm42_out4.png)
Environmental Data
- ●The above contents and descriptions are subject to change without notice.