18 TURNS CERMET TRIMMERS
RoHS compliant
CT-94
INTERNAL STRUCTURE
!0
2 1
3
9
4
5
6
7
Part name
■ FEATURES
ORoHS compliant
OThin body design (4.8 mm thick)
O18 turns, sealed, precision type
8
Material
Flammability
Polybutyleneterephthalate
UL94V-0
1
Housing
2
Base element
3
Wiper
4
Resistive element
RuO2 cermet
5
Electrode
Ag-Pd cermet
6
Adhesive
Epoxy
UL94V-0
7
Terminal pin
Copper, Tin-plated
—
8
Rotor gear
Polyamide
UL94HB
9
Rubber cushion
!0
Shaft
Ceramic
Multi metal alloy
—
Silicone rubber
—
Brass, Nickel-plated
■ PART NUMBER DESIGNATION
C T - 9 4 E W 1 k Ω ( 1 0 2 )
Series name
Terminal pin
E：Sn (Lead-free)
Product shape
W, Y ： Top adjustment
X, P, Z ： Side adjustment
※ Please refer to the LIST OF PART NUMBERS when placing orders.
Resistance code
Resistance value
CT-94
CERMET TRIMMERS
■ LIST OF PART NUMBERS
Adjustment
position
Shape of terminal
(Top view)
Top adjustment
3
1
Form of packaging
Plastic bag
〈Nominal resistance values〉
A 10 Ω A 20 Ω
Pieces in
package
20 kΩ
A 25 kΩ
50 Ω
100 Ω
200 Ω
500 Ω
1 kΩ
2 kΩ
50 kΩ
100 kΩ
200 kΩ A 250 kΩ 500 kΩ
1 MΩ
2 MΩ
5 kΩ
Fig.1
※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.
CT-94EW
2
The products indicated by A mark are manufactured upon receipt of
order basis.
2
CT-94EY
3
10 kΩ
1
3
1
CT-94EX
50 pcs./pack
2
Side adjustment
( ↑ Adjustment
direction)
3
1
CP-94EP
■ MECHANICAL CHARACTERISTICS
2
3
1
CT-94EZ
2
■ ELECTRICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
10 Ω ~ 2 MΩ
± 10 %
Power ratings
0.5 W (70 °C) 0 W (125 °C)
Resistance law
（B）Linear law
Maximum input voltage
DC300 V or power rating, whichever is smaller
Maximum wiper current
100 mA or power rating, whichever is smaller
Effective electrical turn
15 turns
Mechanical turn
18 turns
Operating torque
35 mN·m {357 gf·cm} maximum
Mechanical stop
Clutch action
200 cycles [ΔR/R ≦ ± (2 Ω + 3 %)]
Rotational life
Terminal strength
10 N {1.02 kgf} minimum
（Tensile strength）
Thrust to shaft
10 N {1.02 kgf} minimum
245 ± 3 °C, 2 ~ 3 s
Solderability
{ }：Reference only
■ 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 ≦ 2 %]
2
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
Shock
981 m/s , 6 ms
6 directions for 3 times each
Vibration
(Amplitude) 1.52 mm or
(Acceleration) 196 m/s2,
10 ~ 2000 Hz, 3 directions, 12 times each
Load life
70 °C, 0.5 W, 1000 h
1 % or 2 Ω, whichever is greater
1 % or 3 Ω, whichever is greater
−55 ~ 125 °C
10 Ω, 20 Ω : ± 250 10-6/°C maximum
50 Ω ~ 2 MΩ : ± 100 10-6/°C maximum
1000 MΩ minimum (DC500 V)
AC900 V, 60 s
Approx. 0.88 g (CT-94EP)
Approx. 0.92 g (CT-94EW, EX, EY, EZ)
Low temp. operation
− 55 °C, 2 h
High temp. exposure
125 °C, 250 h
Immersion seal
85 °C, 60 s
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
[ΔR/R ≦ 3 %]
[S.S. ≦ 1 %]
[ΔR/R ≦ 2 %]
[S.S. ≦ 2 %]
[ΔR/R ≦ 3 %]
[S.S. ≦ 2 %]
No leaks (No continuous bubbles)
Flow
± 3 °C, 5 ~ 6 s, two times maximum
Soldering heat 260
Manual soldering
[ΔR/R ≦ 1 %]
380 ± 10 °C, 3 ~ 4 s
Δ R/R：Change in total resistance
S.S. ：Setting stability
CT-94
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
25 k
50 k
102
202
502
103
203
253
503
22.4
31.6
50.0
70.7
100
112
158
22.4
15.8
10.0
7.07
5.00
4.48
3.16
100 k
200 k
250 k
500 k
1M
2M
104
204
254
504
105
205
224
300
300
300
300
300
2.24
1.50
1.20
0.60
0.30
0.15
Nominal resistance values (Ω)
A
A
A
A
The products indicated by A mark are manufactured upon receipt of order basis.
■ OUTLINE DIMENSIONS
OCT-94EW
Top adjustment
Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)
φ 2.3, Slot 0.6 W × 0.8 D
9.6
1
5 min.
2
9.6
1.4
3
1.1
3 – φ 0.5 0.05
2.5
1
1.3
2.3
Resistace/Date code and Lead-free Identification mark
OCT-94EX
Side adjustment
φ 2.3, Slot 0.6 W × 0.8 D
1.4
1.3
3 – φ 0.5 0.05
2.5
2
1.1
9.6
3
9.6
5 min.
Resistace/Date code and Lead-free Identification mark
2.5
1
4.8
3
CW rotation
2.5
4.8
2.3
2
CT-94
CERMET TRIMMERS
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)
1
φ 2.3, Slot 0.6 W × 0.8 D
3
3 – φ 0.5 0.05
2.5
4.8
9.6
7 2
2.5
1.4
9.6
2
1.3
1
1.1
Resistace/Date code and Lead-free Identification mark
φ 2.3, Slot 0.6 W × 0.8 D
4.8
3 – φ 0.5 0.05
9.6
2
1
2.5
9.6
1.4
3
2.5
OCT-94EY
Top adjustment
7 2
1.1
1.3
1.1
2.5
Resistace/Date code and Lead-free Identification mark
OCT-94EZ
Side adjustment
φ 2.3, Slot 0.6 W × 0.8 D
1.4
3 – φ 0.5 0.05
2.5
1.3
2
1.1
9.6
3
4.8
Resistace/
Date code
2.5
1
Lead-free Identification mark
9.6
■ PACKAGING SPECIFICATIONS
<Bulk pack specifications>
OUnit of bulk in a plastic bag is 50 pcs. per pack.
O Boxing of bulk in a plastic bag is performed with 100
pcs. per box.
7 2
1.1
2.5
3
CW rotation
2.5
OCT-94EP
Side adjustment
2