refer to the LIST OF PART NUMBERS when placing orders.
■
Specifications are subject to change without notice.
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
SM-42/43
■
LIST OF PART NUMBERS
Electrical turn
Adjustment
Shape of terminal
position
Form of packaging
Taping (reel)
Plastic bag
〈
Nominal resistance values
〉
A
10
Ω
A
20
Ω
50
Ω
100
Ω
200
Ω
500
Ω
1 kΩ
2 kΩ
2 MΩ
5 kΩ
10 kΩ
20 kΩ
50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ
Fig. 1
W
(J-hook)
Top adjustment
SM-42TW
SM-42TX
SM-42TA
SM-42TB
SM-43TW
SM-43TX
SM-43TA
SM-43TB
TA, TB : 500 pcs./reel
TW, TX : 250 pcs./reel
SM-42W
SM-42X
SM-42A
SM-42B
SM-43W
SM-43X
SM-43A
SM-43B
X
(Gull wing)
11
A
(J-hook)
Side adjustment
The products indicated by
A
mark are manufactured upon receipt of order basis.
※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.
B
(Gull wing)
W
(J-hook)
Top adjustment
X
(Gull wing)
5
A
(J-hook)
Side adjustment
■
MECHANICAL CHARACTERISTICS
Operating torque
17.6 mN·m {180 gf·cm} maximum
Clutch action
200 cycles [
Δ
R/R
≦
±
(3
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
Mechanical stop
Rotational life
B
(Gull wing)
Pieces in package
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
10
Ω
~ 2 MΩ
±
10 %
0.25 W (85 °C) 0 W (150 °C)
Linear law
DC300 V or power rating, whichever is smaller
100 mA or power rating, whichever is smaller
11 turns (SM-42), 5 turns (SM-43)
1 % or 2
Ω,
whichever is greater
1 % or 3
Ω,
whichever is greater
−65
~ 150 °C
±
100 10
-6
/°C maximum
100 MΩ minimum (DC500 V)
AC600 V, 60 s
Approx. 0.17 g
Thrust to shaft
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
■
ENVIRONMENTAL CHARACTERISTICS
Test item
Thermal shock
Humidity
Shock
Vibration
Load life
Low temp. operation
High temp. exposure
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.
≦
1 %]
[
Δ
R/R
≦
2 %]
[
Δ
R/R
≦
1 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
3 % or 3
Ω]
[S.S.
≦
2 %]
[
Δ
R/R
≦
1 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
2 %]
[S.S.
≦
1 %]
No leaks (No continuous bubbles)
85 °C, 0.25 W, 1000 h
−65
°C, 2 h
150 °C, 250 h
85 °C, 60 s
Reflow profile for soldering heat evaluation
〉
(°C)
250
Temperature
200
150
100
50
Peak : 250
+5
0
Immersion seal
°C
Over 230
°C
180
°C
150
°C
Pre Heating Zone
Soldering heat
90
±
30 s
30
±
10 s
Heating time
Soldering Zone
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
Manual soldering：
350
±
10 °C, 3 ~ 4 s
[
Δ
R/R
≦
1 %]
Δ
R/R：Change in total resistance
S.S.
：Setting
stability
Reflow : two times maximum
■
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-42/43
■
MAXIMUM INPUT RATINGS
Nominal resistance
input
Resistance code Maximum (V)
values (Ω)
voltage
A
A
10
20
50
100
200
500
1k
2k
5k
10 k
20 k
50 k
100 k
200 k
500 k
1M
2M
100
200
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
1.00
2.00
3.53
5.00
7.07
11.2
15.8
22.4
35.4
50.0
70.7
112
158
223
300
300
300
Maximum wiper
current (mA)
100
100
70.7
50.0
35.4
22.4
15.8
11.2
7.07
5.00
3.54
2.24
1.58
1.12
0.60
0.30
0.15
The products indicated by
A
mark are manufactured upon receipt of order basis.
■
RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS
●
SM-42/43A
2
2
(Unit: mm)
●
SM-42/43B
1.3
2
●
SM-42/43W
●
SM-42/43X
2
1.9
1.6
2.9
0
1.6
2.54
2
5.2
0
0
0
2
1.3
2.3
2.3
1.3
2.54
Note) The zero point is the center of mounting.
■
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
1.9
1.3
1.3
1.3
5.1
4
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
SM-42/43
■
OUTLINE DIMENSIONS
●
SM-42/43W
3.9
3.5
1
Resistance code & Production date code
2
1.3
Unless otherwise specified, tolerance :
±
0.3 (Unit : mm)
1
2
3
CW rotation
※
Note the terminal position.
2.54
1.2
4.8
2 – 0.8
3
2.6
φ
1.5, Slot
0.56W
×
0.5D
5.1
5.3
3 – 0.9
3–1
●
SM-42/43X
5.7
3.5
Resistance code & Production date code
2
1.3
1
2.54
2 – 0.8
3
φ
1.5, Slot
0.56W
×
0.5D
1.2
5.1
5.3
3–1
●
SM-42/43A
Resistan ce code & Produ ction d ate code
①
3–1
2.3
2 – 0.9
1.2
1.3
0.56W
×
0.5D
2.6
3.7
3 – 0.8
②
φ
1.5, Slot
③
4.6
5
●
SM-42/43B
Resistance code & Production date code
2
1
3.9
4.8
4.8
2.3
1.3
4.8
2 – 0.9
φ
1.5, Slot
2.8
0.56W
×
0.5D
4.6
6
■
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
1.2
3
3 – 0.6
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
SM-42/43
■
PACKAGING SPECIFICATIONS
<Taping packaging specifications>
●
Taping version (SM-42/43TA, TB) is packaged in 500 pcs. per reel.
Orders will be accepted for units of 500 pcs., i.e., 500, 1000, 1500 pcs., etc.
SM-42/43TW, TX is packaged in 250 pcs. per reel.
Orders will be accepted for units of 250 pcs., i.e., 500, 750 pcs., etc.
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）
（TA/TB
type : In accordance with EIAJ ET-7200A）
Empty
Filled
Empty
+1
(Unit: mm)
13
0
(TA/TB)
17±0.3 (TW, TX)
21±0.8
2±0.5
End
40 mm min.
20 pitches min.
Leader
Head
400 mm min.
13±0.2
180
–1.5
(TA/TB)
0
180
–3
(TW, TX)
0
15.4±1 (TA/TB)
19.5±1 (TW/TX)
●
SM-42/43TW/TX
1.75
±
0.1
4
±
0.1
2
±
0.1
.5
φ
1
●
SM-42/43TA/TB
1.75
±
0.1
0.5
±
0.1
Installation
example
(SM-42W)
1
4
±
0.1
2
±
0.1
3
A
0.4
±
0.1
Installation
example
(SM-42A)
A
3
7.5
±
0.1
5.5
±
0.05
16
–0.1
+0.3
12
60
φ
5
1.
.1
+0 0
Direction of feed
+1
0
.1
+0 0
2
A
1
12
±
0.1
5.75
Cross section A-A
2
A
8
±
0.1
4.5
Cross section A-A
<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.
1 Introduction
In the mid-1960s, American scientist Maas conducted extensive experimental research on the charging process of open-cell batteries and proposed an acceptable charging curve for ...[详细]
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