Trimmer potentiometer SM-31
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SM-31
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SM-31
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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, material data sheets ideal for REACH-SVHC
surveys etc. can be downloaded in chemSHERPA-AI format. - 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 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 ≦ 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/s2, 10~2000 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 code | Maximum 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-3 | 1 | T | W | 500 Ω (501) |
|---|---|---|---|---|
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Series |
Electrical turn 1: 5 turns Blank: 11 turns |
Form of packaging T: Taping (Reel) Blank: Bulk in plastic bag |
Terminal shape (Adjust Pos.) W: J-hook (Top adjustment) A: J-hook (Side adjustment) B: Gull wing (Side adjustment) |
Resistance value (Resistance code) |
| Nominal resistance values | 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ, 200kΩ, 500kΩ, 1MΩ, 2MΩ |
|---|
When ordering, please be sure to include the above nominal resistance value at the end of the part number in the table list below. For resistance code, please refer to the Maximum Input Ratings table in the previous section.
List of Part Numbers
CAD and chemSHERPA-AI (a material data sheet ideal for REACH surveys, etc. / version: 2.09.00) can be downloaded from the popup 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 data | CAD |
|---|---|---|---|---|---|---|---|
| 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 |
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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
Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)
Environmental Data
- ●The above contents and descriptions are subject to change without notice.
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