COPAL ELECTRONICS
SURFACE MOUNT
TYPE TRIMMERS
3 TURNS
SURFACE MOUNT TYPE TRIMMERS
ST-7
INTERNAL STRUCTURE
13
1
12
8
9
11
10
3
7
Part name
s FEATURES
6
5
4
2
Material
Flammability
PPS
(Polyphenylenesulphide)
UL-94V-0
1
Rotor gear
2
Base element
Ceramic
3
Terminal pin
Copper alloy, Solder-plated
4
Resistive element
RuO2 cermet
5
Electrode
Ag-Pd cermet
6
Housing base
7
Wiper
8
Shaft
9
Housing
!0
Shaft “O” ring
!1
Base “O” ring
!2
Clutch spring
!3
q Fine adjustment is possible
q Automatic mounting is possible (Taping)
q Flow/reflow soldering is possible
q Sealed construction (Washable)
Cover
—
PPS
(Polyphenylenesulphide)
UL-94V-0
Multi metal alloy
—
PPS
(Polyphenylenesulphide)
UL-94V-0
Silicone rubber
UL-94HB
Stainless steel
—
CFCs, Halon, Carbon tetrachloride and designated bromic flame
retardant PBBOs and PBBs are not used in our products.
s PART NUMBER DESIGNATION
S T - 7 T A 1 k Ω ( 1 0 2 )
Series name
Resistance code
Form of packaging
Resistance value
T : Taping (Reel)
Blank : Bulk in vinyl bags
Product shape (Shape of terminal)
A : J-hook
B : Gull wing
❈ Please refer to the LIST OF PART NUMBERS when placing orders.
s Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
COPAL ELECTRONICS
ST-7
s RECOMMENDED P.C.B. PAD
OUTLINE DIMENSIONS
s MAXIMUM INPUT RATINGS
Resistance
code
Maximum input
voltage (V)
50
100
200
500
500
101
201
501
3.53
5.00
7.07
11.2
102
202
502
103
203
503
15.8
22.4
35.4
50.0
70.7
112
15.8
11.2
7.07
5.00
3.54
2.24
100 k
200 k
500 k
1M
104
204
504
105
158
200
200
200
1.58
1.00
0.40
0.20
q ST-7B
70.7
50.0
35.4
22.4
1k
2k
5k
10 k
20 k
50 k
q ST-7A
2
Maximum wiper
current (mA)
(Unit: mm)
2
2
2
Nominal resistance
values (Ω)
2
2
5.5
0
3.5
0
1.6
1.6
1.6
2.35
1.6
2.35
Note) The zero point is the center of mounting.
s OUTLINE DIMENSIONS
q ST-7A
Top adjustment
Unless otherwise specified, tolerance : ± 0.3
1
0.5 W × 1.8 L × 0.5 D
6.4
3
CW rotation
1.2
3.4
1.5
2
1
2.3
0.5 W × 1.8 L × 0.5 D
6.4
2
3.4
1.5
0.35 min.
Resistance code & Production date code
q ST-7B
Top adjustment
2 – 0.8
0.02 min.
Solder-plated
t = 0.15
3
4.3
6.1
0
6.8 –0.5
1.5
2
(Unit: mm)
1.2
7.8
Solder-plated
t = 0.15
1
3
0.02 min.
0.35 min.
6.1
1.5
SURFACE MOUNT
TYPE TRIMMERS
SURFACE MOUNT TYPE TRIMMERS
2 – 0.8
2.3
Resistance code & Production date code
❈ The ST-7 series has a different terminal arrangement from the ST-3 and ST-4 series. Pay attention to the location
of terminals number 1 and 3. (Resistance decreases when the shaft is turned CCW.)
s Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
