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COPAL ELECTRONICS
TM-7
CERMET TRIMMERS
■ LIST OF PART NUMBERS
<Nominal resistance values>
50 Ω
100 Ω
200 Ω
500 Ω
1 k Ω
2 k Ω
5 k Ω
10 k Ω
Adjustment
Shape of terminal
Form of packaging
Pieces in
20 k Ω
50 k Ω
100 k Ω
200 k Ω
500 k Ω
1 M Ω
2 M Ω
position
(Top view)
Plastic bag
package
Fig. 1
Top adjustment
1
2
3
TM-7EP
※ The above part numbers are all available as the standard item respectively
with the combination of <Nominal resistance values> (Fig. 1).
※ Verify the above part numbers when placing orders.
2
1
2
3
TM-7EW
50 pcs./pack
Side adjustment
1
3
TM-7ES
( ↑ Adjustment
direction)
3
2
1
TM-7EX
■ ELECTRICAL CHARACTERISTICS
■ MECHANICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
Power ratings
Resistance law
Maximum input voltage
50 Ω ~ 2 M Ω
± 10 %
0.5 W (70 °C) 0 W (120 °C)
Linear law
DC300 V or power rating, whichever is smaller
Mechanical turn
Operating torque
Mechanical stop
Rotational life
Terminal strength
Thrust to shaft
Solderability
3 turns
20 mN·m {204 gf·cm} maximum
Clutch action
200 cycles Δ R/R ≦ ± (2 Ω + 3 %)
10 N {1.02 kgf} minimum
（ Tensile strength ）
10 N {1.02 kgf} minimum
245 ± 3 °C, 2 ~ 3 s
Maximum wiper current
Effective electrical turn
100 mA or power rating, whichever is smaller
2.5 turns
{ } ： Reference only
■ ENVIRONMENTAL CHARACTERISTICS
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
1 % or 2 Ω , whichever is greater
1 % or 3 Ω , whichever is greater
? 55 ~ 120 °C
± 100 10 -6 /°C maximum
1000 M Ω minimum (DC500 V)
AC900 V, 60 s
Approx. 0.50 g (TM-7EP, EW)
Approx. 0.69 g (TM-7ES, EX)
Test item
Thermal shock
Humidity
Shock
Vibration
Load life
Low temp. operation
High temp. exposure
Immersion seal
Test conditions
? 65 ~ 125 °C (0.5 h), 5 cycles
? 10 ~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
981 m/s 2 , 6 ms
6 directions for 3 times each
Amplitude 1.52 mm or
Acceleration 196 m/s 2 ,
10 ~ 2000 Hz, 3 directions, 12 times each
70 °C, 0.5 W, 1000 h
? 55 °C, 2 h
120 °C, 250 h
85 °C, 60 s
Specifications
[ Δ R/R ≦ 1 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 2 %]
[ Δ R/R ≦ 1 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 3 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 2 %]
[S.S. ≦ 2 %]
[ Δ R/R ≦ 3 %]
[S.S. ≦ 2 %]
No leaks (No continuous bubbles)
Flow soldering
Soldering heat
260 ± 3 °C, 5 ~ 6 s, two times maximum
Manual soldering
[ Δ R/R ≦ 1 %]
380 ± 10 °C, 3 ~ 4 s
Δ R/R ： Change in total resistance
S.S. ： Setting stability
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
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