refer to the LIST OF PART NUMBERS when placing orders.
Specifications are subject to change without notice.
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-7
■
LIST OF PART NUMBERS
Adjustment
position
Form of packaging
Shape of terminal
Taping (reel)
Plastic bag
<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
A (
J-hook
)
Top adjustment
ST-7ETA
ST-7ETB
500 pcs./reel
ST-7EA
ST-7EB
50 pcs./pack
B (
Gull wing
)
Pieces in package
※
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 specification is not sold separately and must be purchased in reel units.
■
ELECTRICAL CHARACTERISTICS
Nominal resistance range
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
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 10 /°C maximum
100
Ω
~ 1 MΩ :
±
100 10
-6
/°C maximum
-6
■
MECHANICAL CHARACTERISTICS
Mechanical turn
Operating torque
Mechanical stop
Rotational life
Thrust to shaft
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
3 turns
5 mN·m {51 gf·cm} maximum
Clutch action
100 cycles [
Δ
R/R
≦
±
(2
Ω +3
%)]
5 N {0.51 kgf} minimum
245
±
3 °C, 2 ~ 3 s
5 N {0.51 kgf} 10 s
Width 90 mm, bend 3 mm, 5 s, 1 time
5 N {0.51 kgf} 10 s
{ }
：
Reference only
■
ENVIRONMENTAL CHARACTERISTICS
Test item
Thermal shock
Humidity
Shock
Vibration
Test conditions
−65
~ 125 °C (0.5 h), 5 cycles
−10
~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
981 m/s
2
, 6 ms
6 directions for 3 times each
Amplitude 1.52 mm or
Acceleration 196 m/s
2
,
10 ~ 2000 Hz, 3 directions, 12 times each
70 °C, 0.25 W, 1000 h
Specifications
[
Δ
R/R
≦
2 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
2 %]
1000 MΩ minimum (DC500 V)
AC600 V, 60 s
Approx. 0.25 g
[
Δ
R/R
≦
1 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
3 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
2 %]
[S.S.
≦
2 %]
[
Δ
R/R
≦
3 %]
[S.S.
≦
2 %]
No leaks (No continuous bubbles)
Reflow profile for soldering heat evaluation
〉
Load life
(°C)
250
Temperature
200
150
100
50
Peak : 250
+5
0
°C
Low temp. operation
High temp. exposure
Immersion seal
−55
°C, 2 h
125 °C, 250 h
85 °C, 60 s
Over 230
°C
180
°C
150
°C
Pre Heating Zone
90
±
30 s
30
±
10 s
Heating time
Soldering Zone
Soldering heat
Flow : 260
±
3 °C as the temperature in a pot of
molten solder, immersion from head of terminal to
backside of board, 5 ~ 6 s, two times maximum
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
Manual soldering：350
±
10 °C, 3 ~ 4 s
[
Δ
R/R
≦
1 %]
Reflow : two times maximum
Δ
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.
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-7
■
MAXIMUM INPUT RATINGS
Nominal resistance
input
Resistance code Maximum (V)
values (Ω)
voltage
50
100
200
500
1k
2k
5k
10 k
20 k
50 k
100 k
200 k
500 k
1M
500
101
201
501
102
202
502
103
203
503
104
204
504
105
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
■
RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS
●
ST-7EA
2
●
ST-7EB
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
■
OUTLINE DIMENSIONS
●
ST-7EA
Top adjustment
6.4
Lead-free Identification mark
Unless otherwise specified, tolerance :
±
0.3 (Unit : mm)
1
0.5 W
×
1.8 L
×
0.5 D
1.5
1.5
3.4
0
6.8
–0.5
3
CW rotation
2
1.2
2
4.3
6.1
1
t = 0.15
0.02 min.
2.3
2 – 0.8
3
Resistance code & Production date code
●
ST-7EB
Top adjustment
6.4
2
Lead-free Identification mark
0.5 W
×
1.8 L
×
0.5 D
1.5
1.5
3.4
0.35 min.
1.2
6.1
1
3
0.35 min.
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 arrange-ment from the ST-32 and ST-4 series.
Pay attention to the location of terminals number 1 and 3. (Resistance decreases when
the shaft is turned CCW.)
■
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
2
5.5
0
0
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-7
■
PACKAGING SPECIFICATIONS
<Taping packaging specifications>
●
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.
●
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.
●
EMBOSSED TAPE DIMENSIONS
●
REEL DIMENSIONS
（Conforms
to JIS C 0806-3）
（In
accordance with EIAJ ET-7200A）
(Unit: mm)
Empty
Filled
Empty
17.4±1
End
40 mm min.
20 pitches min.
Leader
Direction of feed
400 mm min.
13±0.2
254±2
21.4±1
●
ST-7ETA
1.75±0.1
12±0.1
4±0.1
2±0.1
0.4±0.1
Installation example
(ST-7EA)
●
ST-7ETB
1.75±0.1
12±0.1
4±0.1
2±0.1
0.4±0.1
Installation example
(ST-7EB)
7.5±0.1
16
7.5±0.1
Direction of feed
5
Direction of feed
16
5
<Bulk pack packaging specifications>
●
Unit of bulk in a plastic bag is 50 pcs. per pack.
●
Boxing of bulk in a plastic bag is performed with 200 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.
I want to use the divided clock as the input clock of the UARTAutomatic module. How can I connect the following two modules together? [/font][/backcolor][/color] [color=#222222][backcolor=rgb(238, 238...
Hello everyone, we want to develop an accessory, which uses the same circuit as the washing machine water level sensor. When the core insertion position changes, the coil inductance changes, the reson...
Analysis of WDM kernel driver model WDM driver is an important part of Windows 2000 operating system. Its normal operation requires the support of other kernel components of Windows 2000. At the same ...
I recently made an alarm clock using MSP430FR2633, so here comes the problem! CapTIvate touch, modify ui8TouchThreshold by yourself. I didn’t use any GUI tool to modify the touch threshold, but I chan...
This book is the sequel to the book "Wonderful Use of Multimeters", which specifically introduces the latest application technology of multimeters. The book is divided into three parts. Chapter 1 summ...
[i=s] This post was last edited by paulhyde on 2014-9-15 09:17 [/i] :) I am preparing the amplifier now, but I don’t know how to start with the filter. Should I also make some modules in advance? ? ? ...
While
the solid-state battery
industry is still engaged in a long technological marathon for
the "ultimate solution" for
electric vehicles
, some companies have begun looking for mor...[Details]
The problem of dynamic sealing of equipment always exists with the operation of the equipment. Today, we have specially sorted out the various commonly used sealing forms, usage scope and character...[Details]
The jammer is a signal blocker, mainly composed of a chip and a radio transmitter. When the car owner presses the remote control lock button, the jammer interferes with the electronic lock receivin...[Details]
With the rapid development of technology, automotive intelligence is increasing at an unprecedented rate. This not only enhances vehicle functionality and comfort, but also places higher deman...[Details]
On August 25th, TSMC, the world's leading contract chip manufacturer, attracted significant attention for its decision to build a chip manufacturing facility in Arizona. TSMC primarily manufactures...[Details]
In the summer of 2025, BlueOval SK, a joint venture between Ford and SK On, officially started production at its first battery factory in Kentucky.
According to the original plan, this w...[Details]
The practice of warming up a car originated with gasoline-powered vehicles. Warming up the engine allows it to enter a better working state and ensures good lubrication. This has become a habit for...[Details]
On August 22, the Wall Street Journal reported on the 21st local time that the new US government does not plan to acquire equity in semiconductor wafer foundry giant TSMC and Micron, one of the thr...[Details]
Magna's integrated in-cabin perception system fuses vision and millimeter-wave radar data to detect the presence of passengers, identify stranded children, monitor driver fatigue and vital signs, a...[Details]
Silicon Labs (also known as "Silicon Labs"), an innovative leader in low-power wireless connectivity, will showcase its cutting-edge artificial intelligence (AI) and Internet of Things (IoT) solu...[Details]
As the core of electric vehicles, batteries are concerned with vehicle use and maintenance. The operation of vehicles is guaranteed by the electricity generated by batteries. For batteries, battery...[Details]
Recently, UBTECH announced its patent for "robot self-battery replacement structure, device and method".
The Qichacha patent abstract shows that the robot's self-battery replacement stru...[Details]
Vision is the most sensitive and direct way for humans to perceive things. It allows us to acquire a wealth of information about our surroundings without physical contact. However, due to the compl...[Details]
PLC is the foundation of modern industry. Although it is a product of the Second Industrial Revolution, it has experienced nearly a century of ups and downs. Not only has it not disappeared, but it...[Details]
introduction
Due to their flexibility and security, Java cards are increasingly being used in the smart card field. Once a Java card is released, if multiple applications need to call the same...[Details]
FPGA/CPLD
京公网安备 11010802033920号
EEWORLD
