SM-42/43 SURFACE MOUNT CERMET TRIMMERS FEATURES

SURFACE MOUNT CERMET TRIMMERS
RoHS compliant
SM-42/43
INTERNAL STRUCTURE
9
1
2
3
8
4
5
7
6
Part name
Material
Flammability
Polyphenylenesulphide
UL-94V-0
■FEATURES
1
Housing
● RoHS compliant
● Fine adjustment is available
● Automatic mounting is available (Taping)
● Reflow soldering is available
● Sealed construction (Washable: Refer to A-328)
2
Base element
3
Electrode
Ag-Pd cermet
4
Resistive element
RuO2 cermet
5
Adhesive
6
Wiper
7
Terminal pin
8
Rotor gear
9
Shaft
Ceramic
—
UL-94V-0
Epoxy
Multi metal alloy
—
Copper alloy, Sn-Cu-plated
Polyamide
UL-94V-0
Brass, Nickel-plated
—
■PART NUMBER DESIGNATION
S M - 4 □ T W 1 0 0 Ω ( 1 0 1 )
Series name
Resistance code
Electrical turn
Resistance value
2：11 turns
3：5 turns
Form of packaging
Product shape (Shape of terminal)
T：Taping (Reel)
Blank：Bulk in plastic bag
W, X：Top adjustmet
A, B：Side adjustmet
※Please refer to the LIST OF PART NUMBERS when placing orders.
ɷ Specifications are subject to change without notice.
COPAL ELECTRONICS
SM-42/43
SURFACE MOUNT TRIMMERS
■LIST OF PART NUMBERS
Form of packaging
Adjustment
Shape of terminal
position
Electrical turn
〈Nominal resistance values〉
Taping (reel)
Plastic bag
W (J-hook)
SM-42TW
SM-42W
X (Gull wing)
SM-42TX
SM-42X
A (J-hook)
SM-42TA
SM-42A
B (Gull wing)
SM-42TB
SM-42B
W (J-hook)
SM-43TW
SM-43W
X (Gull wing)
SM-43TX
SM-43X
A (J-hook)
SM-43TA
SM-43A
B (Gull wing)
SM-43TB
SM-43B
Top adjustment
11
A 10 Ω A 20 Ω
10 kΩ
20 kΩ
50 Ω
100 Ω 200 Ω 500 Ω
1 kΩ
2 kΩ
50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ
2 MΩ
5 kΩ
Fig. 1
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.
Side adjustment
Top adjustment
5
Side adjustment
TA, TB : 500 pcs./reel
TW, TX : 250 pcs./reel
Pieces in package
50 pcs./pack
■ELECTRICAL CHARACTERISTICS
■MECHANICAL CHARACTERISTICS
Operating torque
17.6 mN·m {180 gf·cm} maximum
Mechanical stop
Clutch action
Rotational life
200 cycles [ΔR/R ≦ ± (3 Ω +3 %)]
Thrust to shaft
5 N {0.51 kgf} minimum
Solderability
245 ± 3 °C, 2 ~ 3 s
± 10 %
Shear (Adhesion)
5 N {0.51 kgf} 10 s
Power ratings
0.25 W (85 °C) 0 W (150 °C)
Substrate bending
Width 90 mm, bend 3 mm, 5 s, 1 time
Resistance law
Linear law
10 Ω ~ 2 MΩ
Nominal resistance range
Resistance tolerance
Maximum input voltage
DC300 V or power rating, whichever is smaller
Maximum wiper current
100 mA or power rating, whichever is smaller
Effective electrical turn
11 turns (SM-42), 5 turns (SM-43)
Pull-off strength
{ }：Reference only
■ENVIRONMENTAL CHARACTERISTICS
Test item
End resistance
1 % or 2 Ω, whichever is greater
Thermal shock
C.R.V.
1 % or 3 Ω, whichever is greater
Humidity
−65 ~ 150 °C
Operating temp. range
Shock
± 100 10-6/°C maximum
Temp. coefficient
Insulation resistance
100 MΩ minimum (DC500 V)
5 N {0.51 kgf} 10 s
Test conditions
Specifications
−65 ~ 150 °C (0.5 h), 5 cycles
[ΔR/R ≦ 2 %]
[S.S. ≦ 1 %]
−10 ~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
981 m/s2, 6 ms
6 directions for 3 times each
Vibration
Amplitude 1.52 mm or
Acceleration 196 m/s2,
10 ~ 2000 Hz, 3 directions, 12 times each
85 °C, 0.25 W, 1000 h
Dielectric strength
AC600 V, 60 s
Load life
Net weight
Approx. 0.17 g
Low temp. operation
−65 °C, 2 h
High temp. exposure
150 °C, 250 h
Immersion seal
85 °C, 60 s
Reflow profile for soldering heat evaluation〉
(°C)
250
Peak : 250
+5
0
Temperature
150
100
50
180 °C
150 °C
Pre Heating Zone
Soldering heat
90 ± 30 s
30 ± 10 s
Heating time
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
[ΔR/R ≦ 3 % or 3 Ω]
[S.S. ≦ 2 %]
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
[ΔR/R ≦ 2 %]
[S.S. ≦ 1 %]
No leaks (No continuous bubbles)
°C
Over 230 °C
200
[ΔR/R ≦ 2 %]
Soldering Zone
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
Manual soldering：
350 ± 10 °C, 3 ~ 4 s
[ΔR/R ≦ 1 %]
ΔR/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
SM-42/43
SURFACE MOUNT TRIMMERS
■MAXIMUM INPUT RATINGS
Nominal resistance
input
Resistance code Maximum
values (Ω)
voltage (V)
A
A
Maximum wiper
current (mA)
10
20
50
100
200
500
100
200
500
101
201
501
1.00
2.00
3.53
5.00
7.07
11.2
100
100
70.7
50.0
35.4
22.4
1k
2k
5k
10 k
20 k
50 k
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
2M
104
204
504
105
205
158
223
300
300
300
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-42/43B
● SM-42/43X
2
2
5.1
0
2.3
1.3
1.3
1.9
1.3
1.3
2.3
2.9
0
1.6
5.2
0
2
0
4
1.6
2
1.9
2
2
● SM-42/43W
1.3
● SM-42/43A
(Unit: mm)
2.54
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.
COPAL ELECTRONICS
SM-42/43
SURFACE MOUNT TRIMMERS
■OUTLINE DIMENSIONS
● SM-42/43W
Unless otherwise specified, tolerance : ± 0.3 (Unit : mm)
3.9
1
Resistance code & Production date code
3.5
3
CW rotation
1
2
4.8
1.2
3 – 0.9
2 – 0.8
2.54
1.3
2
※Note the terminal position.
φ 1.5, Slot
3
0.56W × 0.5D
5.1
2.6
3–1
5.3
● SM-42/43X
5.7
Resistance code & Production date code
3.5
2
2 – 0.8
1.2
4.8
2.54
1.3
1
φ 1.5, Slot
0.56W × 0.5D
3
5.1
3–1
5.3
● SM-42/43A
3.7
3 – 0.8
Resistan ce code & Produ ction d ate code
①
2 – 0.9
4.8
1.2
1.3
2.3
3–1
②
φ 1.5, Slot
0.56W × 0.5D
2.6
③
4.6
5
● SM-42/43B
1
1.2
2.3
1.3
4.8
2
3 – 0.6
3.9
Resistance code & Production date code
3
2 – 0.9
φ 1.5, Slot
0.56W × 0.5D
4.6
2.8
6
■ 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
SM-42/43
SURFACE MOUNT TRIMMERS
■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
(Unit: mm)
Empty
+1
13 0 (TA/TB)
17±0.3 (TW, TX)
Head
40 mm min.
21±0.8
20 pitches min.
2±0.5
+1
0
End
60
Leader
Direction of feed
400 mm min.
13±0.2
0
180 –1.5 (TA/TB)
0
180 –3 (TW, TX)
5.75
2
1.75 ± 0.1
0.4 ± 0.1
Installation
example
(SM-42A)
12
5.5 ± 0.05
7.5 ± 0.1
2 ± 0.1
3
.1
+0 0
12 ± 0.1
5
A
1
1
A
1.
2
Installation
example
(SM-42W)
φ
.1
+0 0
5
.
φ1
3
4 ± 0.1
0.5 ± 0.1
+0.3
2 ± 0.1
A
● SM-42/43TA/TB
16 –0.1
4 ± 0.1
1.75 ± 0.1
● SM-42/43TW/TX
15.4±1 (TA/TB)
19.5±1 (TW/TX)
4.5
A
8 ± 0.1
Cross section A-A
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.