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
T : Taping (Reel)
Blank : Bulk in vinyl bags
Resistance value
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
SURFACE MOUNT TYPE TRIMMERS
ST-7
s
LIST OF PART NUMBERS
Adjustment
position
Form of packaging
Shape of terminal
Taping (reel)
Bulk packaging
<Nominal resistance values>
50
Ω
10 kΩ
100
Ω
200
Ω
500
Ω
20 kΩ
1 kΩ
2 kΩ
5 kΩ
50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ
Fig. 1
Top
adjustment
A
(
J-hook)
B
(
Gull wing)
ST-7TA
ST-7TB
500 pcs./reel
ST-7A
ST-7B
50 pcs./pack
❈
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.
❈
Taping version must be purchased in reel units.
Pieces in package
s
ELECTRICAL CHARACTERISTICS
Nominal resistance range
Total resistance tolerance
Power ratings
Resistance law
Maximum input voltage
Maximum wiper current
Effective electrical turn
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
50
Ω
~ 1 MΩ
±
20 %
0.25 W (70 °C) 0 W (125 °C)
Linear law
s
MECHANICAL CHARACTERISTICS
Mechanical turn
Operating torque
Mechanical stop
Rotational life
Thrust to shaft
3 turns
5 mN·m {51 gf·cm} maximum
Clutch action
100 cycles
_
[
∆
R/R
≤ ±
(2
Ω
+3 %)]
5 N {0.51 kgf} minimum
235 °C, 2 s
5 N {0.51 kgf} 10 s
Width 90 mm, bend 3 mm,
5 s, 1 time
DC200 V or power rating, whichever is smaller
100 mA or power rating, whichever is smaller
2.5 turns
1 % or 2
Ω,
whichever is greater
1 % or 3
Ω,
whichever is greater
−55
~ + 125 °C
50
Ω
:
±
250 ppm/°C maximum
100
Ω
~ 1 MΩ :
±
100 ppm/°C maximum
1000 MΩ minimum (DC500 V)
AC600 V, 60 s
Approx. 0.25 g
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
5 N {0.51 kgf} 10 s
{ } : Reference only
s
ENVIRONMENTAL CHARACTERISTICS
Test item
Thermal shock
Humidity
Shock
Vibration
Load life
Low temp. operation
High temp. exposure
Immersion seal
Soldering heat
Test conditions
−65
~ + 125 °C (0.5 h), 5 cycles
−10
~ + 65 °C (80 ~ 98 %RH),
10 cycles, 240 h
981 m/s
2
, 6 ms
6 directions for 3 times each
Amplitude of 1.52 mm or Acceleration
of 196 m/s
2
, 10~2000 Hz, 3 directions,
12 times each
70 °C, 0.25 W, 1000 h
−55
°C, 2 h
125 °C, 250 h
85 °C, 60 s
260 °C, 10 s or 215 °C, 35 s
Specifications
_
[
∆
R/R
≤
2 %]
_
[S.S.
≤
1 %]
_
[
∆
R/R
≤
2 %]
_
[
∆
R/R
≤
1 %]
_
[S.S.
≤
1 %]
_
[
∆
R/R
≤
3 %]
_
[S.S.
≤
1 %]
_
[
∆
R/R
≤
2 %]
_
[S.S.
≤
2 %]
_
[
∆
R/R
≤
3 %]
_
[S.S.
≤
2 %]
No leaks
(No continuous bubbles)
_
[
∆
R/R
≤
1 %]
∆
R/R : Change in total resistance
S.S. : Setting stability
s
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
SURFACE MOUNT
TYPE TRIMMERS
COPAL ELECTRONICS
ST-7
SURFACE MOUNT TYPE TRIMMERS
SURFACE MOUNT
TYPE TRIMMERS
s
MAXIMUM INPUT RATINGS
Nominal resistance
values (Ω)
50
100
200
500
1k
2k
5k
10 k
20 k
50 k
100 k
200 k
500 k
1M
Resistance
code
500
101
201
501
102
202
502
103
203
503
104
204
504
105
Maximum input
voltage (V)
3.53
5.00
7.07
11.2
15.8
22.4
35.4
50.0
70.7
112
158
200
200
200
Maximum wiper
current (mA)
70.7
50.0
35.4
22.4
15.8
11.2
7.07
5.00
3.54
2.24
1.58
1.00
0.40
0.20
s
RECOMMENDED P.C.B. PAD
OUTLINE DIMENSIONS
q
ST-7A
2
q
ST-7B
2
2
2
3.5
2
1.6
2.35
1.6
1.6
2.35
Note) The zero point is the center of mounting.
(Unit: mm)
1.6
s
OUTLINE DIMENSIONS
q
ST-7A
Top adjustment
6.4
2
Unless otherwise specified, tolerance :
±
0.3
0.5 W
×
1.8 L
×
0.5 D
(Unit: mm)
1
3.4
1.2
1.5
1.5
3
CW rotation
2
0
6.8
–0.5
6.1
1
3
Solder-plated
t = 0.15
Resistance code & Production date code
0.02 min.
2.3
2 – 0.8
6.4
2
0.5 W
×
1.8 L
×
0.5 D
1.5
1.5
3.4
0.35 min.
q
ST-7B
Top adjustment
1.2
6.1
1
3
0.35 min.
Solder-plated
t = 0.15
7.8
2 – 0.8
2.3
0.02 min.
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.
4.3
2
5.5
0
0
COPAL ELECTRONICS
SURFACE MOUNT TYPE TRIMMERS
ST-7
s
PACKAGING SPECIFICATIONS
<Taping packaging specifications>
q
Taping version is packaged in 500 pcs. per reel.
Orders will be accepted for units of 500 pcs., i.e., 500,
1000, 1500 pcs., etc.
q
Taping version is boxed with one reel (500 pcs.).
Maximum number of consecutive missing pieces=2
Leader length and reel dimension are shown in the dia-
grams below.
q
EMBOSSED TAPE DIMENSIONS
q
REEL DIMENSIONS
(Unit: mm)
+2
0
16.4
Empty
Filled
Empty
End
Head
13±0.2
40 mm min.
20 pitches min.
Leader
Direction of feed
250±2
400 mm min.
22.4 max.
q
Reel & embossed tape materials
Embossed tape: Plastic
Reel: Paper
q
Embossed tape pull strength
9.8 N {1kgf} minimum
q
Peeling strength of seal tape
0.098~0.69 N {10~70gf}
{ } : Reference only
q
Test method for peeling strength of seal tape
Seal cover tape
165°~180°
Peel direction
(300 mm/min)
Direction of feed
Carrier tape
q
ST-7TA
1.75±0.1
12±0.1
4±0.1
2±0.1
0.4±0.1
Installation example
(ST-7A)
q
ST-7TB
1.75±0.1
12±0.1
4±0.1
2±0.1
0.4±0.1
Installation example
(ST-7B)
7.5±0.1
16
7.5±0.1
Direction of feed
5
Direction of feed
16
5
<Bulk packaging specifications>
q
Unit of bulk in vinyl bag packaging is 50 pcs. per pack.
q
Boxing of bulk in vinyl bags is performed with 200 pcs.
per box.
s
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
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