Pieces in package
ST-5
SURFACE MOUNT TRIMMERS
※The above part numbers are all available with the respective combination of
<Nominal resistance values> (Fig. 1).
※Verify the above part numbers when placing orders.
※
Taping and magazine specifications are not sold separately and must be purchased in reel or stick units.
■
LIST OF PART NUMBERS
Adjustment
position
Top adjustment
Side
adjustment
Shape of terminal
W (Gull wing)
X (Gull wing)
P (Gull wing)
R (Gull wing)
Form of packaging
Taping (reel) Magazine (stick)
ST-5ETW ST-5EMW ST-5EW
ST-5ETX ST-5EMX ST-5EX
ST-5ETP ST-5EMP ST-5EP
ST-5ETR ST-5EMR ST-5ER
Plastic bag
500 pcs./reel 50 pcs./stick 50 pcs./pack
The products indicated by A mark are manufactured upon receipt of order basis.
〈
Nominal resistance values
〉
ΔR/R：Change in total resistance
S.S. ：Setting stability
■
ELECTRICAL CHARACTERISTICS
■
MECHANICAL CHARACTERISTICS
Nominal resistance range 10 Ω ~ 2 MΩ
±10 %
0.25 W (85 °C) 0 W (120 °C)
（B）
Linear law
DC200 V or power rating, whichever is smaller
100 mA or power rating, whichever is smaller
11 turns
1 % or 2 , whichever is greater
1 % or 3 , whichever is greater
− 55 ~ 120 °C
10 ~ 50 : ± 250 10
-6
/°C maximum
100 ~ 2 M : ± 100 10
-6
/°C maximum
1000 M minimum (DC500 V)
AC600 V, 60 s
Approx. 0.35 g
Resistance tolerance
Power ratings
Resistance law
Maximum input voltage
Maximum wiper current
Effective electrical turn
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
Mechanical turn 14 turns
20 mN·m {204 gf·cm} maximum
Clutch action
200 cycles
10 ~ 200 [ΔR/R ≦ ± (0.5 + 3 %)]
500 ~ 2 M [ΔR/R ≦ ± (0.5 + 2 %)]
5 N {0.51 kgf} minimum
245 ± 3 °C, 2 ~ 3 s
5 N {0.51 kgf} 10 s
Width 90 mm, bend 3 mm, 5 s, 1 time
5 N {0.51 kgf} 10 s
Operating torque
Mechanical stop
Rotational life
Thrust to shaft
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
■
ENVIRONMENTAL CHARACTERISTICS
Test item Test conditions Specifications
Thermal shock
− 65 ~ 125 °C (0.5 h), 5 cycles
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
Humidity
−10 ~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
[ΔR/R ≦ 1 %]
Shock
981 m/s
2
, 6 ms
6 directions for 3 times each
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
Vibration
(Amplitude) 1.52 mm or
(Acceleration) 196 m/s
2
,
10 ~ 2000 Hz, 3 directions, 12 times each
Load life 85 °C, 0.25 W, 1000 h
[ΔR/R ≦ 2 %]
[S.S. ≦ 1 %]
Low temp. operation
− 55 °C, 2 h
[ΔR/R ≦ 2 %]
[S.S. ≦ 2 %]
High temp. exposure
120 °C, 250 h
[ΔR/R ≦ 2 %]
[S.S. ≦ 2 %]
Immersion seal 85 °C, 60 s
もれ 無し（連続気泡無し）
No leaks (No continuous bubbles)
Soldering heat [ΔR/R ≦ 1 %]
Fig. 1
{ }
：
Reference only
Reflow profile for soldering heat evaluation
〉
Reflow : two times maximum
Peak : 250
Over 230 C
Pre Heating Zone
180 C
(C)
250
200
150
100
50
150 C
90 30 s
30 10 s
Soldering Zone
Heating time
Temperature
C
+5
0
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.)
手はんだ Manual soldering：350 ± 10
°C, 3 ~ 4 s
A
10
A
20 50 100 200 500 1 k 2 k 5 k
10 k 20 k 50 k 100 k 200 k 500 k 1 M 2 M
