COPAL ELECTRONICS
18 TURNS CERMET TRIMMERS
RoHS compatible
CT-94
INTERNAL STRUCTURE
!0
2 1
3
9
4
5
6
8
7
Material
Flammability
PBT
(Polybutyleneterephthalate)
UL-94V-0
Part name
■ FEATURES
● Lead-free soldering, Cadmium-free
● Thin body design (4.8 mm thick)
● 18 turn, sealed, precision type
1
Housing
2
Base element
3
Wiper
4
Resistive element
RuO2 cermet
5
Electrode
Ag-Pd cermet
6
Adhesive
Epoxy
7
Terminal pin
Ceramic
Multi metal alloy
—
UL-94V-0
Sn-Pb
Copper, Solder-plated
Sn
Copper, Tin-plated
—
8
Rotor gear
PA (Polyamide)
9
Rubber cushion
Silicone rubber
!0
Shaft
UL-94HB
—
Brass, Nickel-plated
CFCs, Halon, Carbon tetrachloride and designated bromic flame
retardant PBBOs and PBBs are not used in our products.
■ PART NUMBER DESIGNATION
C T - 9 4 □ W 1 k Ω ( 1 0 2 )
Series name
Terminal pin
Blank : Sn-Pb
E : Sn (Lead-free)
Resistance code
Resistance value
Product shape
W, Y : Top adjustment
X, P, Z : Side adjustment
❈ Please refer to the LIST OF PART NUMBERS when placing orders.
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
Oct,
2004
COPAL ELECTRONICS
CT-94
CERMET TRIMMERS
■ LIST OF PART NUMBERS
Adjustment
position
Shape of terminal
(Top view)
Form of packaging
Vinyl pack
A 10 Ω A 20 Ω
Pieces in
package
1
100 Ω
200 Ω
500 Ω
1 kΩ
2 kΩ
100 kΩ
200 kΩ A 250 kΩ 500 kΩ
1 MΩ
2 MΩ
5 kΩ
CT-94W
CT-94EW
The products indicated by A mark are manufactured upon receipt of order
basis.
CT-94Y
CT-94EY
❈ The above part numbers are all available with the respective combination of
(Fig. 1).
❈ Verify the above part numbers when placing orders.
CT-94X
CT-94EX
CT-94P
CP-94EP
1
1
50 Ω
50 kΩ
Fig.1
2
3
A 25 kΩ
Sn (Lead-free)
2
3
20 kΩ
Sn-Pb
Top adjustment
3
10 kΩ
50 pcs./pack
2
Side adjustment
(↑ Adjustment
direction)
3
1
2
3
1
CT-94Z
CT-94EZ
■ MECHANICAL CHARACTERISTICS
Mechanical turn
18 turns
Operating torque
35 mN·m {357 gf·cm} maximum
Mechanical stop
Clutch action
2
200 cycles [∆ R/R ≦ ± (2 Ω + 3 %)]
Rotational life
■ ELECTRICAL CHARACTERISTICS
Nominal resistance range
10 Ω ~ 2 MΩ
Terminal strength
10 N {1.02 kgf} minimum
(Tensile strength)
Thrust to shaft
10 N {1.02 kgf} minimum
Sn-Pb : 235 °C, 2 s
Sn (Lead-free) : 245 ± 3 °C, 2 ~ 3 s
Solderability
Resistance tolerance
± 10 %
Power ratings
0.5 W (70 °C) 0 W (125 °C)
Resistance law
Linear law (B)
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
{ } : Reference only
■ ENVIRONMENTAL CHARACTERISTICS
Test item
Test conditions
Specifications
Thermal shock
− 65 ~ 125 °C (0.5 h),
5 cycles
[∆ R/R ≦ 1 %]
[S.S. ≦ 1 %]
Humidity
−10 ~ 65 °C (Relative humidity 80 ~ 98 %),
10 cycles, 240 h
[∆ R/R ≦ 2 %]
Shock
981 m/s2, 6 ms
6 directions for 3 times each
End resistance
1 % or 2 Ω, whichever is greater
Vibration
Amplitude 1.52 mm or
Acceleration 196 m/s2,
10 ~ 2000 Hz, 3 directions, 12 times each
C.R.V.
1 % or 3 Ω, whichever is greater
Load life
70 °C, 0.5 W, 1000 h
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
− 55 ~ 125 °C
Low temp. operation
− 55 °C, 2 h
10 Ω, 20 Ω : ± 250 10-6/°C maximum
50 Ω ~ 2 MΩ : ± 100 10-6/°C maximum
High temp. exposure
125 °C, 250 h
Immersion seal
85 °C, 60 s
1000 MΩ minimum (DC500 V)
[∆ R/R ≦ 3 %]
[S.S. ≦ 1 %]
[∆ R/R ≦ 2 %]
[S.S. ≦ 2 %]
[∆ R/R ≦ 3 %]
[S.S. ≦ 2 %]
No leaks (No continuous bubbles)
Sn-Pb
AC900 V, 60 s
350 °C, 3 s
Sn
Soldering heat Flow soldering :
Net weight
[∆ R/R ≦ 1 %]
[S.S. ≦ 1 %]
Approx. 0.88 g (CT-94P, EP)
Approx. 0.92 g (CT-94W, X, Y, Z, EW, EX, EY, EZ)
260 ± 3 °C, 5 ~ 6 s, two times maximum
Manual soldering :
380 ± 10 °C, 3 ~ 4 s
[∆ R/R ≦ 1 %]
∆ 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.
Oct,
2004
COPAL ELECTRONICS
CT-94
CERMET TRIMMERS
■ MAXIMUM INPUT RATINGS
Nominal resistance values (Ω)
A
A
A
A
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
The products indicated by A mark are manufactured upon receipt of order basis.
■ OUTLINE DIMENSIONS
● CT-94W, 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
CW rotation
3
2
2
9.6
1.4
3
5 min.
2.5
4.8
1.1
1.3
3 – φ 0.5 ± 0.05
2.5
1
2.3
Resistace/Date code and Lead-free Identification mark
● CT-94X, CT-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
4.8
9.6
5 min.
2.5
1
2.3
Resistace/Date code and Lead-free Identification mark
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
Oct,
2004
COPAL ELECTRONICS
CT-94
CERMET TRIMMERS
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance: ± 0.3 (Unit: mm)
● CT-94P, CT-94EP
Side adjustment
1
φ 2.3, Slot 0.6 W × 0.8 D
3
2.5
3 – φ 0.5 ± 0.05
2
2
2.5
1.3
4.8
9.6
7±2
1
2.5
1.4
9.6
3
CW rotation
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
● CT-94Y, CT-94EY
Top adjustment
1.1
1.3
7±2
1.1
2.5
Resistace/Date code and Lead-free Identification mark
● CT-94Z, 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
1.1
9.6
3
2
4.8
Resistace/
Date code
9.6
7±2
2.5
1
Lead-free Identification mark
1.1
2.5
■ PACKAGING SPECIFICATIONS
● Unit of bulk in vinyl bag packaging is 50 pcs. per pack.
● Boxing of bulk in vinyl bags is performed with 100 pcs. per box.
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
Oct,
2004
