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.
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
SM-3/31
■
LIST OF PART NUMBERS
Electrical turns
Adjustment
position
Top adjustment
11
Side adjustment
Form of packaging
Shape of terminal
Taping (reel)
Plastic bag
〈
Nominal resistance values
〉
50
Ω
20 kΩ
100
Ω
200
Ω
500
Ω
1 kΩ
2 kΩ
5 kΩ
2 MΩ
10 kΩ
50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ
Fig. 1
W
A
B
(J-hook)
(J-hook)
(Gull wing)
(J-hook)
(J-hook)
(Gull wing)
SM-3TW
SM-3TA
SM-3TB
SM-31TW
SM-31TA
SM-31TB
SM-3W
SM-3A
SM-3B
SM-31W
SM-31A
SM-31B
※
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.
Top adjustment
5
Side adjustment
W
A
B
Pieces in package
500 pcs./reel
50 pcs./pack
■
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
~ 2 MΩ
±
20 %
0.125 W (70 °C) 0 W (150 °C)
Linear law
DC200 V or power rating, whichever is smaller
100 mA or power rating, whichever is smaller
11 turns (SM-3) / 5 turns (SM-31)
1 % or 3
Ω,
whichever is greater
3 % or 3
Ω,
whichever is greater
−65
~ 150 °C
±
100 10
-6
/°C maximum
100 MΩ minimum (DC500 V)
■
MECHANICAL CHARACTERISTICS
Operating torque
Mechanical stop
Rotational life
Thrust to shaft
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
5 mN·m {51 gf·cm} maximum
Clutch action
200 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
Test conditions
−65
~ 150 °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
Specifications
[
Δ
R/R
≦
2 %]
[S.S.
≦
2 %]
[
Δ
R/R
≦
3 %]
[
Δ
R/R
≦
1 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
3 %]
[S.S.
≦
2 %]
[
Δ
R/R
≦
2 %]
[S.S.
≦
2 %]
[
Δ
R/R
≦
3 %]
[S.S.
≦
2 %]
No leaks (No continuous bubbles)
AC600 V, 60 s
Humidity
Approx. 0.10 g
Shock
Reflow profile for soldering heat evaluation
〉
(°C)
250
Temperature
200
150
100
50
Peak : 250
+5
0
Vibration
Load life
Low temp. operation
High temp. exposure
Immersion seal
°C
70 °C, 0.125 W, 1000 h
−65
°C, 2 h
150 °C, 250 h
85 °C, 60 s
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
Manual soldering：350
±
10 °C, 3 ~ 4 s
Over 230
°C
180
°C
150
°C
Pre Heating Zone
90
±
30 s
30
±
10 s
Heating time
Soldering Zone
Soldering heat
[
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.
SURFACE MOUNT TRIMMERS
SM-3/31
■
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
2M
Resistance code
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
Maximum input voltage (V)
2.50
3.53
5.00
7.91
11.2
15.8
25.0
35.4
50.0
79.1
112
158
200
200
200
Maximum wiper current (mA)
50.0
35.4
25.0
15.8
11.2
7.91
5.00
3.54
2.50
1.58
1.12
0.79
0.40
0.20
0.10
■
RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS
●
SM-3W/31W
1.3
1.3
1.6
1.6
2
4.4
0
2.8
0.9
●
SM-3A/31A
1.3
●
SM-3B/31B
1.3
(Unit : mm)
3.12
2.43
1.3
0
1.6
4
0
1.6
0
1.6
2.8
0.9
2.8
0.9
0.9
2.8
※
Also available to place as the above.
Note) The zero point is the center of mounting.
■
OUTLINE DIMENSIONS
●
SM-3W/31W
Top adjustment
Resistance code & Production date code
Unless otherwise specified, tolerance :
±
0.3 (Unit : mm)
1
2
0.8
2
3
CW rotation
1
※
Note the terminal position.
2.8
0.6
3.9
1
3
2.3
3.2
3.5
3.9
4.2
0.4W
×
1.3L
×
0.3D
0.8
Specifications are subject to change without notice.
2
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
SM-3/31
■
OUTLINE DIMENSIONS
●
SM-3A/31A
Side adjustment
Resistance code &
Production date code
2.5
Unless otherwise specified, tolerance :
±
0.3 (Unit : mm)
●
SM-3B/31B
Side adjustment
Resistance code &
Production date code
2.5
1
3
CW rotation
2
※
Note the terminal position.
0.4W
×
1.3L
×
0.3D
0.4W
×
1.3L
×
0.3D
3.9
1
2
3.4
3 – 0.8
3 – 0.8
3.9
1
2
3.4
4.4
3.9
2 – 0.6
3
2.8
1
3
2 – 0.6
2.8
1
■
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.
Maximum number of consecutive missing pieces = 2
Leader length and reel dimension are shown in the dia-grams below.
●
REEL DIMENSIONS
（Conforms
to JIS C 0806-3）
●
EMBOSSED TAPE DIMENSIONS
（In
accordance with EIAJ ET-7200A）
5.3
3.9
(Unit: mm)
Empty
Filled
Empty
13
Head
+1
0
40 mm min.
20 pitches min.
Leader
Direction of feed
400 mm min.
13±0.2
180
–1.5
0
15.4±1
■
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
60
+1
0
End
21±0.8
2±0.5
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
SM-3/31
●
SM-3TW/31TW
2
±
0.05
φ
5
1.
.1
+0 0
1.75
±
0.1
4
±
0.1
A
3
0.4
±
0.1
Installation example
(SM-3W)
5.5
±
0.05
2
A
8
±
0.1
1
12
+0.3
–0.1
4.7
Cross section A-A
●
SM-3TA/31TA
4
±
0.1
2
±
0.05
A
1.75
±
0.1
0.4
±
0.1
Installation example
(SM-3A)
5.5
±
0.05
A
2
8
±
0.1
1
12
+0.3
–0.1
φ
1.
5
.1
+0 0
3
3.9
Cross section A-A
●
SM-3TB/31TB
4
±
0.1
2
±
0.05
A
1.75
±
0.1
0.4
±
0.1
Installation example
(SM-3B)
1
5.5
±
0.05
A
2
8
±
0.1
12
–0.1
+0.3
<Bulk pack 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.
据外媒报道，萨里大学（University of Surrey）的研究人员开发出一种无需依赖GPS即可在人口密集的城市地区精确定位设备位置的人工智能系统。该系统可将定位误差从734米缩小到22米以内，这对于自动驾驶汽车和救援车辆等技术的发展意义重大。 图片来源： 萨里大学 在发表于《IEEE Robotics and Automation Letters》的论文中，研究人员介绍了PEn...[详细]
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