Trimmpotentiometer ST-4｜NIDEC COMPONENTS EUROPE GmbH

Trimmpotentiometer ST-4

ST-4

ST-4

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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, chemSHERPA downloads are available,
which can be used for REACH-SVHC surveys, etc.
Click to go to the List of Part Numbers below for download

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	DC200 V 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 (DC500 V)
Dielectric strength	AC 500 V, 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 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 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	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 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	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-4	E	T	A	200 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)

ST-4

200 Ω (201)

Series

ST-4:

ST-42:

(Rotor groove)

minus slot

cross slot

Terminal pins

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)

List of Part Numbers

Nominal resistance values	10 Ω, 20 Ω, 50 Ω, 100 Ω, 200 Ω, 500 Ω, 1 kΩ, 2 kΩ, 5 kΩ, 10 kΩ, 20 kΩ, 50 kΩ, 100 kΩ, 200 kΩ, 500 kΩ, 1 MΩ, 2 MΩ

When ordering, please be sure to include the above nominal resistance value at the end of the part number below. *10 Ω item, 20 Ω item are made to order.

Downloads of chemSHERPA (e.g. for REACH-SVHC surveys) are available below. *Need to log in to download.

Part No.	Rotor groove	Terminal shape	Adjustment position	Packaging form	Packaging quantity	REACH-SVHC	CAD
ST-4ETA	minus slot	J-hook	Top adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4EA	minus slot	J-hook	Top adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4ETB	minus slot	Gull wing	Top adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4EB	minus slot	Gull wing	Top adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4EC	minus slot	Through hole	Top adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4ETD*	minus slot	Gull wing	Rear adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4ED*	minus slot	Gull wing	Rear adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4EF※	minus slot	Through hole	Rear adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4ETG	minus slot	J-hook	Side adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4EG	minus slot	J-hook	Side adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4ETH	minus slot	Gull wing	Side adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-4EH	minus slot	Gull wing	Side adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42ETA	cross slot	J-hook	Top adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42EA	cross slot	J-hook	Top adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42ETB	cross slot	Gull wing	Top adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42EB	cross slot	Gull wing	Top adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42EC	cross slot	Through hole	Top adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42ETD*	cross slot	Gull wing	Rear adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42ED*	cross slot	Gull wing	Rear adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42EF*	cross slot	Through hole	Rear adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42ETG	cross slot	J-hook	Side adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42EG	cross slot	J-hook	Side adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42ETH	cross slot	Gull wing	Side adjust	Taping	500 pcs./reel	chemSHERPA （shai file）	3D CAD（Any Model）
ST-42EH	cross slot	Gull wing	Side adjust	Bulk	100 pcs./pack	chemSHERPA （shai file）	3D CAD（Any Model）