SM-31A [NIDEC]
SURFACE MOUNT CERMET TRIMMERS;
| 型号： | SM-31A |
| 厂家： | 
NIDEC COMPONENTS |
| 描述： | SURFACE MOUNT CERMET TRIMMERS |
| 文件： | 总5页 (文件大小：127K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SURFACE MOUNT CERMET TRIMMERS SM-3/31
INTERNAL STRUCTURE
RoHS compliant
1
2
9
8
3
4
5
7
6
Part name
Housing
Material
Polyphenylenesulphide
Ceramic
Flammability
■
FEATURES
UL94V-0
1
2
3
4
5
6
7
8
9
OꢀRoHS compliant
OꢀFine adjustment is possible
OꢀAutomatic mounting is possible (Taping)
OꢀReflow soldering is possible
OꢀSealed construction (Washable: Refer to page 750.)
Base element
Electrode
Ag-Pd cermet
Resistive element
Adhesive
RuO2 cermet
—
Epoxy
Wiper
Multi metal alloy
Copper alloy, Sn-Cu-plated
Polyamide
Terminal pin
Rotor gear
Shaft
UL94V-0
—
Brass, Nickel-plated
■
PART NUMBER DESIGNATION
S M - 3
□ T W 1 k Ω ( 1 0 2 )
Series name
Resistance code
Resistance value
Electrical turn
Blank：11 turns
1：5 turns
Product shape (Shape of terminal)
A, W：J-hook
B：Gull wing
Form of packaging
T：Taping (Reel)
Blank：Bulk in plastic bag
※Please refer to the LIST OF PART NUMBERS when placing orders.
SM-3/31
SURFACE MOUNT TRIMMERS
■
LIST OF PART NUMBERS
〈Nominal resistance values〉
50 ꢀ 100 ꢀ 200 ꢀ 500 ꢀ 1 kꢀ
2 kꢀ
5 kꢀ 10 kꢀ
Form of packaging
Adjustment
Electrical turns
Shape of terminal
position
Taping (reel)
Plastic bag
SM-3W
SM-3A
20 kꢀ 50 kꢀ 100 kꢀ 200 kꢀ 500 kꢀ 1 Mꢀ 2 Mꢀ
Fig. 1
Top adjustment
(J-hook)
(J-hook)
SM-3TW
SM-3TA
W
A
11
5
Side adjustment
Top adjustment
Side adjustment
(Gull wing)
(J-hook)
SM-3TB
SM-3B
B
SM-31TW
SM-31TA
SM-31TB
500 pcs./reel
SM-31W
SM-31A
SM-31B
W
A
(J-hook)
※ 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.
(Gull wing)
B
Pieces in package
50 pcs./pack
※
Taping specification is not sold separately and must be purchased in reel units.
■
ELECTRICAL CHARACTERISTICS
■ MECHANICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
Power ratings
50 ꢀ ~ 2 Mꢀ
Operating torque
Mechanical stop
Rotational life
5 mN·m {51 gf·cm} maximum
20 %
Clutch action
0.125 W (70 °C) 0 W (150 °C)
（B）Linear law
200 cycles [ΔR/R ≦ (2 ꢀ +3 %)]
5 N {0.51 kgf} minimum
245 3 °C, 2 ~ 3 s
Resistance law
Thrust to shaft
Solderability
Maximum input voltage
Maximum wiper current
Effective electrical turn
End resistance
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 ꢀ, whichever is greater
3 % or 3 ꢀ, whichever is greater
−65 ~ 150 °C
Shear (Adhesion)
Substrate bending
Pull-off strength
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
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
100 10-6/°C maximum
■
ENVIRONMENTAL CHARACTERISTICS
100 Mꢀ minimum (DC500 V)
AC600 V, 60 s
Test item
Test conditions
Specifications
[ΔR/R ≦ 2 %]
[S.S. ≦ 2 %]
−65 ~ 150 °C (0.5 h), 5 cycles
Thermal shock
Humidity
Approx. 0.10 g
−10 ~ 65 °C (80 ~ 98 %),
[ΔR/R ≦ 3 %]
10 cycles, 240 h
981 m/s2, 6 ms
Shock
6 directions for 3 times each
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
(Amplitude) 1.52 mm or
Reflow profile for soldering heat evaluation
〉
(Acceleration) 196 m/s2,
Vibration
10 ~ 2000 Hz, 3 directions, 12 times each
(C)
250
Peak : 250 +5
C
0
[ΔR/R ≦ 3 %]
[S.S. ≦ 2 %]
[ΔR/R ≦ 2 %]
[S.S. ≦ 2 %]
Load life
70 °C, 0.125 W, 1000 h
−65 °C, 2 h
Over 230 C
Low temp. operation
High temp. exposure
Immersion seal
200
150
Pre Heating Zone
[ΔR/R ≦ 3 %]
[S.S. ≦ 2 %]
180 C
150 C
150 °C, 250 h
85 °C, 60 s
No leaks (No continuous bubbles)
90 30 s
30 10 s
100
50
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
Manual soldering：350 10 °C, 3 ~ 4 s
Soldering heat
[ΔR/R ≦ 1 %]
Soldering Zone
Heating time
ΔR/R：Change in total resistance
S.S. ：Setting stability
Reflow : two times maximum
SM-3/31
SURFACE MOUNT TRIMMERS
■
MAXIMUM INPUT RATINGS
Nominal resistance values (Ω)
Resistance code
Maximum input voltage (V) Maximum wiper current (mA)
50
500
101
201
501
2.50
3.53
5.00
7.91
50.0
35.4
25.0
15.8
100
200
500
1 k
2 k
5 k
10 k
20 k
50 k
102
202
502
103
203
503
11.2
15.8
25.0
35.4
50.0
79.1
11.2
7.91
5.00
3.54
2.50
1.58
100 k
200 k
500 k
1 M
104
204
504
105
205
112
158
200
200
200
1.12
0.79
0.40
0.20
0.10
2 M
■
RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS
(Unit : mm)
OꢀSM-3W/31W
OꢀSM-3A/31A
OꢀSM-3B/31B
1.3
1.3
1.3
1.3
0
0
0
0
0.9
0.9
2.8
2.8
0.9
2.8
0.9
2.8
※Also available to place as the above.
Note) The zero point is the center of mounting.
■
OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : 0.3 (Unit : mm)
OꢀSM-3W/31W
Top adjustment
1
3
CW rotation
2
Resistance code & Production date code
1
※Note the terminal position.
0.8
0.8
2
2.3
3.2
3.5
3.9
4.2
3
0.4W × 1.3L × 0.3D
SM-3/31
SURFACE MOUNT TRIMMERS
■
OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : 0.3 (Unit : mm)
OꢀSM-3A/31A
Side adjustment
OꢀSM-3B/31B
1
3
Side adjustment
CW rotation
2
Resistance code &
Production date code
Resistance code &
Production date code
※
Note the terminal position.
0.4W × 1.3L × 0.3D
0.4W × 1.3L × 0.3D
3.9
1
3.4
3 – 0.8
3.9
1
3.4
2
2
2 – 0.6
1
3
2.8
2 – 0.6
2.8
1
3
■
PACKAGING SPECIFICATIONS
<Taping packaging specifications>
OꢀTaping version is packaged in 500 pcs. per reel.
Orders will be accepted for units of 500 pcs., i.e., 500,
1000, 1500 pcs., etc.
OꢀTaping 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.
OꢀEMBOSSED TAPE DIMENSIONS
OꢀREEL DIMENSIONS
（Conforms to JIS C 0806-3）
（In accordance with EIAJ ET-7200A）
(Unit: mm)
Empty
Filled
Empty
13 +1
0
End
Head
21 0.8
2 0.5
40 mm min.
20 pitches min.
Direction of feed
400 mm min.
13 0.2
0
180 –1.5
15.4 1
SM-3/31
SURFACE MOUNT TRIMMERS
OꢀSM-3TW/31TW
4 0.1
2 0.05
φ
0.4 0.1
A
3
Installation example
(SM-3W)
A
2
1
Cross section A-A
4.7
8 0.1
OꢀSM-3TA/31TA
4 0.1
φ
0.4 0.1
2 0.05
3
Installation example
(SM-3A)
A
1
A
3.9
Cross section A-A
8 0.1
2
OꢀSM-3TB/31TB
4 0.1
2 0.05
φ
0.4 0.1
3
A
Installation example
(SM-3B)
1
A
3.9
Cross section A-A
8 0.1
2
<Bulk pack specifications>
OꢀUnit of bulk in a plastic bag is 50 pcs. per pack.
OꢀBoxing of bulk in a plastic bag is performed with 200
pcs. per box.
相关型号：
©2020 ICPDF网 联系我们和版权申明