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Trimmer potentiometer ST-4

●To buy this product, please go to the following Online Web stores.
To the Trimmer potentiometer “ST-4 series” page on the DigiKey online shop
To the Trimmer potentiometer “ST-4 series” page on the Mouser online shop
To the Trimmer potentiometer “ST-4 series” page on the Newark online shop
To the Trimmer potentiometer “ST-4 series” page on the RS components online shop

Surface Mount Cermet Trimmers (Single Turn)

 

FeaturesFeatures
  • RoHS compliant
  • Wide variety (7 types) to choose from
  • Automatic mounting is possible (Taping)
  • Flow/reflow soldering is possible
  • Sealed construction (Washable)
  • Stopper structure prevents terminal pin from being open.
  • Cross slot rotor suitable for automatic adjustment
  • 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

Nominal resistance range 10 Ω ~ 2 MΩ
Resistance tolerance ± 20 %
Power ratings 0.25 W (70 °C), 0 W (125 °C)
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 angle 210 ° (1 turn)
End resistance 1 % or 2 Ω, whichever is greater
C.R.V. 1 % or 3 Ω, whichever is greater
Operating temp. range -55 ~ 125 °C
Temp. coefficient 10 Ω ~ 50 Ω: ± 250 10-6/°C maximum
100 Ω ~ 2 MΩ: ± 100 10-6/°C maximum
Insulation resistance 1000 MΩ minimum (500 VDC)
Dielectric strength 500 VAC, 60 s
Net weight Approx. 0.12 g (ST-4EA, EB, EC, ED, EF) Approx. 0.22 g (ST-4EG, EH)

Mechanical Characteristics

Mechanical angle 240° (1 turn)
Operating torque 10 mN·m {102 gf·cm} maximum
Stop strength 30 mN·m {306 gf·cm} minimum
Rotational life 100 cycles [ΔR/R ≦ ± 2 Ω +3 %)]
Thrust to rotor 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 Acceleration 196 m/s210~2000 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 Flow: 260 ±3 °C as the temperature in a pot of molten solder, immer sion from head of ter minal to
backside of board, 5~6 s, two times maximum
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 204 200 1.00
500k 504 200 0.40
1M 105 200 0.20
2M 205 200 0.10
The products indicated by ※ mark are manufactured upon receipt of order basis.

Part Number Designation

ST-4ETA200 Ω (201)

Series

 

ST-4:

ST-42: 

(Rotor groove)

minus slot

cross slot

Terminal pins

E: 

Sn-Cu

(Lead-free)

Packaging form

T: Taping (Reel)

Blank: 

Bulk in

plastic bag

Terminal shape (Adjust Pos.)

A: J-hook (Top adjust)

B: Gull wing (Top adjust)

C: Through hole pins (Top adjust)

D: Gull wing (Rear adjust)

F: Through hole pins (Rear adjust)

G: J-hook (Side adjust)

H: Gull wing (Side adjust)

Resistance value (Resistance code)

 
Nominal resistance values 10Ω*, 20Ω*, 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. *10 Ω item, 20 Ω item are made to order.
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: 2.10.00 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.Rotor grooveTerminal shapeAdjustment positionPackaging formPackaging quantityMaterial dataCAD
ST-4ETA minus slot J-hook Top adjust Taping 500
pcs./reel
ST-4EA minus slot J-hook Top adjust Bulk 100 pcs./pack
ST-4ETB minus slot Gull wing Top adjust Taping 500
pcs./reel
ST-4EB minus slot Gull wing Top adjust Bulk 100 pcs./pack
ST-4EC minus slot Through hole Top adjust Bulk 100 pcs./pack
ST-4ETD* minus slot Gull wing Rear adjust Taping 500
pcs./reel
ST-4ED* minus slot Gull wing Rear adjust Bulk 100 pcs./pack
ST-4EF* minus slot Through hole Rear adjust Bulk 100 pcs./pack
ST-4ETG minus slot J-hook Side adjust Taping 500
pcs./reel
ST-4EG minus slot J-hook Side adjust Bulk 100 pcs./pack
ST-4ETH minus slot Gull wing Side adjust Taping 500
pcs./reel
ST-4EH minus slot Gull wing Side adjust Bulk 100 pcs./pack
ST-42ETA cross slot J-hook Top adjust Taping 500
pcs./reel
ST-42EA cross slot J-hook Top adjust Bulk 100 pcs./pack
ST-42ETB cross slot Gull wing Top adjust Taping 500
pcs./reel
ST-42EB cross slot Gull wing Top adjust Bulk 100 pcs./pack
ST-42EC cross slot Through hole Top adjust Bulk 100 pcs./pack
ST-42ETD* cross slot Gull wing Rear adjust Taping 500
pcs./reel
ST-42ED* cross slot Gull wing Rear adjust Bulk 100 pcs./pack
ST-42EF* cross slot Through hole Rear adjust Bulk 100 pcs./pack
ST-42ETG cross slot J-hook Side adjust Taping 500
pcs./reel
ST-42EG cross slot J-hook Side adjust Bulk 100 pcs./pack
ST-42ETH cross slot Gull wing Side adjust Taping 500
pcs./reel
ST-42EH cross slot Gull wing Side adjust Bulk 100 pcs./pack
*
Rear adjustment type is made to order.

Recommended P.C.B. Pad Outline Dimensions

Outline Dimensions

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

Packaging Specifications

〈Taping packaging 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.
ST-4ETA, ETB and ETD versions are boxed with 4 reels (2000 pcs.).
ST-4ETG and ETH versions are boxed with one reel (500 pcs.).
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)
  • ●ST-4ETA/ETB/ETD
  • ●ST-4ETG/ETH
    (Unit: mm)

〈Bulk pack specifications〉

Unit of bulk in a plastic bag is 100 pcs. per pack.
Boxing of bulk in a plastic bag is performed with 500 pcs. per box.

Environmental Data

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

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