18 TURNS CERMET TRIMMERS
RoHS compliant
CT-94
INTERNAL STRUCTURE
⑩
② ①
③
⑨
④
⑤
⑥
⑦
Part name
■ FEATURES
●
●
●
●
RoHS compliant
Thin body design (4.8 mm thick)
18 turns, sealed, precision type
Resin material is UL Recognized 94V-0
⑧
Material
①
Housing
②
Base element
③
Wiper
④
Resistive element
RuO2 cermet
⑤
Electrode
Ag-Pd cermet
⑥
Adhesive
Epoxy
⑦
Terminal pin
⑧
Rotor gear
⑨
Rubber cushion
⑩
Shaft
Polybutyleneterephthalate
Ceramic
Multi metal alloy
Copper, Tin-plated
Polyamide
Silicone rubber
Brass, Nickel-plated
■ PART NUMBER DESIGNATION
C T - 9 4 E W 1 kΩ ( 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
Top adjustment
Form of packaging
Shape of
terminal
(Top view)
Adjustment
position
③
③
Plastic bag
②
③
②
③
①
③
①
②
CT-94EZ
①
■ ELECTRICAL CHARACTERISTICS
10 Ω ~ 2 MΩ
± 10 %
Power ratings
0.5 W (70 °C) 0 W (125 °C)
Resistance law
Linear law
DC300 V or power rating, whichever is smaller
Maximum wiper current 100 mA or power rating, whichever is smaller
Effective electrical turn
15 turns
End resistance
1 % or 2 Ω , whichever is greater
C.R.V.
1 % or 3 Ω , whichever is greater
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
5 kΩ
pack
②
Maximum input voltage
2 kΩ
2 MΩ
50 pcs./
③
①
③
Resistance tolerance
1 kΩ
1 MΩ
The products indicated by → mark are manufactured upon
receipt of order basis.
CP-94EP
②
Nominal resistance range
50 Ω 100 Ω 200 Ω
②
①②
③
CT-94EX
500 Ω
20 kΩ → 25 kΩ 50 kΩ 100 kΩ 200 kΩ → 250 kΩ 500 kΩ
※ The above part numbers are all available with the respective
combination of (Fig. 1).
※ Verify the above part numbers when placing orders.
CT-94EW
①
①
10 kΩ
Fig.1
CT-94EY
①
③
Side adjustment
(↑ Adjustment
direction)
→ 10 Ω → 20 Ω
Pieces in
package
②
②
③
①
①
②
〈Nominal resistance values〉
−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)
■ MECHANICAL CHARACTERISTICS
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
Solderability
245 ± 3 °C, 2 ~ 3 s
{ }: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 %]
−10 ~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
[ΔR/R ≦ 2 %]
Humidity
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
2
Low temp. operation
−55 °C, 2 h
High temp. exposure
125 °C, 250 h
Immersion seal
85 °C, 60 s
Flow
260 ± 3 °C, 5 ~ 6 s, two times
Soldering heat maximum
Manual soldering
380 ± 10 °C, 3 ~ 4 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)
[ΔR/R ≦ 1 %]
ΔR/R:Change in total resistance
S.S. :Setting stability
CT-94
CERMET TRIMMERS
■ MAXIMUM INPUT RATINGS
Nominal resistance values ( Ω )
Resistance code
→
10
→
20
50
100
200
500
Maximum input voltage (V)
Maximum wiper current (mA)
100 1.00 100
200 2.00 100
500 5.00 100
101
7.07
70.7
201
10.0
50.0
501
15.8
31.6
1 k
102
22.4
22.4
2 k
202
31.6
15.8
5 k
502
50.0
10.0
10 k
103
70.7
7.07
20 k
203
100
5.00
→
25 k
253
112
4.48
50 k 503 158 3.16
→
100 k
200 k
250 k
500 k
1 M
2 M
104
204
254
504
105
205
224
300
300
300
300
300
2.24
1.50
1.20
0.60
0.30
0.15
The products indi-cated by → mark are manufactured upon receipt of order basis.
■ OUTLINE DIMENSIONS
● CT-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
2.5
1
1.3
3 – Φ 0.5±0.05
2.3
Resistace/Date code and Lead-free Identification mark
● CT-94EX
Side adjustment
Φ 2.3, Slot 0.6 W × 0.8 D
1.4
1.3
3 –Φ 0.5±0.05
1.1
9.6
2.5
3
2
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)
● CT-94EP
Side adjustment
①
Φ 2.3, Slot 0.6 W × 0.8 D
2.5
3 – Φ 0.5±0.05
2.5
1.3
4.8
7±2
1
1.1
Resistace/Date code and Lead-free Identification mark
Φ 2.3, Slot 0.6 W × 0.8 D
4.8
9.6
3 –Φ 0.5±0.05
2
1
2.5
9.6
1.4
3
2.5
● CT-94EY
Top adjustment
1.1
1.3
7±2
1.1
2.5
Resistace/Date code and Lead-free Identification mark
● CT-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
7±2
■PACKAGING SPECIFICATIONS
● Unit of bulk in a plastic bag is 50 pcs. per pack.
● Boxing of bulk in a plastic bag is performed with 100 pcs. per box.
1.1
2.5
2.5
1.4
9.6
2
9.6
③
CW rotation
3
②
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