15 TURNS CERMET TRIMMERS
RoHS compliant
CT-20
INTERNAL STRUCTURE
1
8
!0
9
45
6
2
3
Part name
■ FEATURES
ORoHS compliant
OGeneral use type
OWide resistance range from 10 Ω to 5 M Ω
7
Material
Flammability
Brass, Nickel-plated
—
Polybutyleneterephthalate
UL94V-0
Copper, Tin-plated
—
Epoxy
UL94V-0
1
Shaft
2
Housing
3
Terminal pin
4
Adhesive
5
Base element
6
Wiper
7
Resistive element
8
Slider block
9
Rubber cushion
Silicone rubber
!0
Electrode
Ag-Pd cermet
Ceramic
—
Multi metal alloy
RuO2 cermet
Polybutyleneterephthalate
UL94HB
—
■ PART NUMBER DESIGNATION
C T - 2 0 E P 2 0 0 kΩ ( 2 0 4 )
Series name
Resistance code
Terminal pin
E:Sn (Lead-free)
Product shape
P :Side adjustment
X :Side adjustment
PB :Panel mount
※ Please refer to the LIST OF PART NUMBERS when placing orders.
Resistance value
CT-20
CERMET TRIMMERS
■ LIST OF PART NUMBERS
Adjustment
position
Shape of terminal
(Top view)
Form of packaging
Plastic bag
Pieces in
package
A 10 Ω A 20 Ω
10 k Ω
20 k Ω
50 Ω
100 Ω
200 Ω
500 Ω
1kΩ
2kΩ
5kΩ
50 k Ω
100 k Ω
200 k Ω
500 k Ω
1MΩ
2 M Ω A 5 MΩ
Fig. 1
2
※ The above part numbers are all available with the respective combination of
(Fig. 1).
※ Verify the above part numbers when placing orders.
CT-20EP
1
3
50 pcs./pack
Side
adjustment
( ↑ Adjustment
direction)
2
The products indicated by A mark are manufactured upon receipt of
order basis.
CT-20EX
1
3
2
CT-20EPB
3
25 pcs./pack
1
■ MECHANICAL CHARACTERISTICS
■ ELECTRICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
Power ratings
Resistance law
10 Ω ~ 5 M Ω
± 10 %
0.5 W (70 °C) 0 W (120 °C)
15 turns
Operating torque
35 mN·m {357 gf·cm} maximum
Mechanical stop
Clutch action
DC300 V or power rating, whichever is smaller
Maximum wiper current
100 mA or power rating, whichever is smaller
Effective electrical turn
12 turns
1 % or 2 Ω , whichever is greater
Thrust to rotor
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
245 ± 3 °C, 2 ~ 3 s
{ }:Reference only
■ ENVIRONMENTAL CHARACTERISTICS
Test item
1 % or 3 Ω , whichever is greater
− 55 ~ 120 °C
10 N {1.02 kgf} minimum
Solderability
Humidity
Operating temp. range
9 N {917 gf} minimum
(Tensile strength)
Terminal strength
Thermal shock
C.R.V.
200 cycles
10 Ω ~ 200 Ω [ Δ R/R ≦ ± (0.5 Ω +3 %)]
500 Ω ~ 5 M Ω [ Δ R/R ≦ ± (0.5 Ω +2 %)]
Rotational life
(B)
Linear law
Maximum input voltage
End resistance
Mechanical turn
Shock
Test conditions
Specifications
− 65 ~ 125 °C (0.5 h), 5 cycles
[ Δ R/R ≦ 1 %]
[S.S. ≦ 1 %]
− 10 ~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
981 m/s2, 6 ms
6 directions for 3 times each
10 Ω , 20 Ω , 5 M Ω : ± 250 10-6/°C maximum
50 Ω ~ 2 M Ω : ± 100 10-6/°C maximum
Vibration
(Amplitude) 1.52 mm or
(Acceleration) 196 m/s2,
10 ~ 2000 Hz, 3 directions, 12 times each
1000 M Ω minimum (DC500 V)
Load life
70 °C, 0.5 W, 1000 h
[ Δ R/R ≦ 1 %]
[ Δ R/R ≦ 1 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 2 %]
[S.S. ≦ 1 %]
[ Δ R/R ≦ 1 %]
[S.S. ≦ 2 %]
[ Δ R/R ≦ 2 %]
[S.S. ≦ 2 %]
AC600 V, 60 s
Low temp. operation
− 55 °C, 2 h
Approx. 1.08 g (CT-20EP, EX)
Approx. 3.7 g (CT-20EPB)
High temp. exposure
120 °C, 250 h
Immersion seal
85 °C, 60 s
No leaks (No continuous bubbles)
Soldering heat
Flow
260 ± 3 °C, 5 ~ 6 s, two times maximum
Manual soldering
380 ± 10 °C, 3 ~ 4 s
[ Δ R/R ≦ 1 %]
Δ R/R:Change in total resistance
S.S. :Setting stability
CT-20
CERMET TRIMMERS
■ MAXIMUM INPUT RATINGS
Resistance code
Maximum input voltage (V)
Maximum wiper current (mA)
10
20
50
100
200
500
100
200
500
101
201
501
1.00
2.00
5.00
7.07
10.0
15.8
100
100
100
70.7
50.0
31.6
1k
2k
5k
10 k
20 k
50 k
102
202
502
103
203
503
22.4
31.6
50.0
70.7
100
158
22.4
15.8
10.0
7.07
5.00
3.16
100 k
200 k
500 k
1M
2M
5M
104
204
504
105
205
505
224
300
300
300
300
300
2.24
1.50
0.60
0.30
0.15
0.06
Nominal resistance values ( Ω )
A
A
A
■ OUTLINE DIMENSIONS
OCT-20EP
Side adjustment
Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)
1
1.5
6.4
4.8
3
2
1
5.1
1.25
3.3
2.5
OCT-20EX
Side adjustment
12.7
Resistance code, Production date code &
Lead-free Identification mark
q 2.5, Slot 0.6 W =0.8 D
19
1.5
3 –q 0.5 ± 0.05
7±2
6.4
4.8
5
3
2
7.6
2.5
0.6
17.8
CW rotation
2
19
7±2
3 – q 0.5 ± 0.05
3
Resistance code, Production date code &
Lead-free Identification mark
q 2.5, Slot 0.6 W =0.8 D
5
1.25
The products indicated by A mark are
manufactured upon
receipt of order
basis.
1
CT-20
CERMET TRIMMERS
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)
OCT-20EPB
1
3
CW rotation
7
2
23
Resistance code, Production date code &
Lead-free Identification mark
12.7
6.1
2.5
5.1
M5 (P = 0.8)
q 2.9 ± 0.2
Slot 0.6 W = 1 D
3 – q 0.5 ± 0.05
3
2
■ PACKAGING SPECIFICATIONS
OUnit of bulk in a plastic bag is 50 pcs. (CT-20EPB is 25
pcs.) per pack.
O Boxing of bulk in a plastic bag is performed with 100
pcs. (CT-20EPB is 50 pcs.) per box.
1
5.4 ± 2
2.25
6.4
8.9
Washer t = 0.8
Nut M5, t = 3.2
8.4
7
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