Trimmer potentiometer ST-7
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ST-7
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ST-7
- ●To buy this product, please go to the following Online Web stores.
Surface Mount Cermet Trimmers (3 turns)
FeaturesFeatures
- Fine adjustment is possible
- Automatic mounting is possible (Taping)
- Flow/reflow soldering is possible
- Sealed construction (Washable)
- 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 | 0.25 W (70 °C) 0 W (125 °C) |
|---|---|
| Nominal resistance range | 50 Ω ~ 1 MΩ |
| Resistance tolerance | ± 20 % |
| Resistance law | Linear law（B） |
| Maximum input voltage | DC200 V or power rating, whichever is smaller |
| Maximum wiper current | 100 mA or power rating, whichever is smaller |
| Effective electrical turn | 2.5 turns |
| End resistance | 1 % or 2 Ω , whichever is greater |
| C.R.V. | 1 % or 3 Ω , whichever is greater |
| Operating temp. range | −55 ~ 120 °C |
| Temp. coefficient | 50 Ω : ± 250 10-6/°C maximum 100 Ω ~ 1 MΩ : ± 100 10-6/°C maximum |
| Insulation resistance | 1000 MΩ minimum (DC500 V) |
| Dielectric strength | AC600 V, 60 s |
| Net weight | Approx. 0.25 g |
Mechanical Characteristics
| Mechanical turn | 3 turns |
|---|---|
| Operating torque | 5 mN•m {51 gf•cm} maximum |
| Mechanical stop | Clutch action |
| Rotational life | 100 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 |
{ }：Reference only
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 ≦ 1%] |
| 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, 0.25 W, 1000 h | [ΔR/R ≦ 3 %] [S.S. ≦ 1 %] |
| Low temp. operation | -55 °C, 2 h | [ΔR/R ≦ 2%] [S.S. ≦ 2%] |
| High temp. exposure | 125 °C, 250 h | [ΔR/R ≦ 3%] [S.S. ≦ 2%] |
| Immersion seal | 85 °C, 60 s | No leaks (No continuous bubbles) |
| Soldering heat |
|
[ΔR/R ≦ 1%] |
Δ R/R: Change in total resistance
S.S.: Setting stability
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 | 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 | 200 | 1.00 |
| 500k | 504 | 200 | 0.40 |
| 1M | 105 | 200 | 0.20 |
Part Number Designation
| ST-7 | E | T | W | 1 kΩ (102) |
|---|---|---|---|---|
|
Series |
Terminal pin E:
Sn (Lead-free)
|
Form of packaging T: Taping (Reel) Blank: Bulk in plastic bag |
Terminal shape (Adjust Pos.) A: J-hook (Top adjustment) B: Gull wing (Top adjustment) |
Resistance value (Resistance code) |
| Nominal resistance values | 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ, 200kΩ, 500kΩ, 1MΩ |
|---|
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. | Shape of terminal | Adjustment position | Form of packaging | Pieces in package | Material data | CAD |
|---|---|---|---|---|---|---|
| ST-7ETA | J-hook | Top adjustment | Taping (reel) | 500 pcs./reel | ||
| ST-7EA | J-hook | Top adjustment | Plastic bag | 50 pcs./pack | ||
| ST-7ETB | Gull wing | Top adjustment | Taping (reel) | 500 pcs./reel | ||
| ST-7EB | Gull wing | Top adjustment | Plastic bag | 50 pcs./pack |
Recommended P.C.B. Pad Outline Dimensions
Outline Dimensions
※ The ST-7 series has a different terminal arrangement from the ST-32 and ST-4 series. Pay attention to the location of terminals number 1 and 3. (Resistance decreases when the shaft is turned CCW.)
Environmental Data
- ●The above contents and descriptions are subject to change without notice.
