SM-4
Vishay
Surface Mount Cermet Trimmers (12 Turns)
FEATURES
•
•
•
•
•
•
Lead (Pb)-free soldering, Cadmium-free
Fine adjustment is possible
Automatic mounting is possible (Taping)
Flow/reflow soldering is possible
Sealed construction (Washable)
RoHS compatible
DIMENSIONS
in millimeters
RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS
SM-4A, EA
3–2
2
SM-4A
SM-4B
SM-4B, EB
1.3
2
SM-4W, EW
2
SM-4W
3–1.6
2–1.3
2.54
Document Number: 58008
Revision: 13-Jul-05
5.2
0
2–1.3
2.3
2.3
2–1.3
Note)
The zero point is the center of mounting.
www.vishay.com
1
For technical questions contact: copalsupport@vishay.com
2.9
4
0
0
SM-4
Surface Mount Cermet Trimmers (12 Turns)
Vishay
OUTLINE DIMENSIONS
SM-4A, SM-4EA
Side adjustment
Lead-free Identification mark
Unless otherwise specified, tolerance : ± 0.3 (Unit : mm)
1
3
CW rotation
2
3
4.5
2
2–0.
8
2.35
1.2
φ
1.5, Slot 0.56W × 0.5D
2.6
5
3
*
Note
the terminal position.
4.9
1
Resistance code & Production date code
3.7
1.2
t = 0.15
SM-4B, SM-4EB
Side adjustment
Resistance code & Production date code
3
2
4.9
φ
1.5, Slot 0.56W × 0.5D
2.6
6.2
0.35 min.
0.35 min.
2–0.
8
1.2
1
4.5
Lead-free Identification mark
3.7
SM-4W, SM-4EW
Top
adjustment
Resistance code & Production date code
3.7
2
t = 0.15
1
1.2
1.2
3
2.6
φ
1.5, Slot
0.56W× 0.5D
Lead-free Identification mark
5.1
5.3
1.7
3.8
2–0.
8
2.54
4.9
2.35
1.2
Document Number: 58008
Revision: 13-Jul-05
For technical questions contact: copalsupport@vishay.com
www.vishay.com
2
SM-4
Vishay
Surface Mount Cermet Trimmers (12 Turns)
PACKAGING SPECIFICATIONS
Taping packaging specifications
·
Taping
version
(SM-4TA, TB, ETA, ETB types) are packaged in 500 pcs. per reel.
Orders
will be
accepted for
units
of 500 pcs., i.e., 500, 1000, 1500 pcs., etc.
SM-4TW, ETW types are packaged in 250 pcs. per reel.
Orders
will be
accepted for
units
of 250 pcs., i.e., 500, 750 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.
·
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/ETA/ETB)
17.4±1 (TW/ETW)
21±0.8
End
Head
40 mm min.
Direction of feed
20 pitches min.
Leader
400 mm min.
2±0.5
13±0.2
180
–1.5
(TA/TB/ETA/ETB)
182 ±1 (TW/ETW)
0
15.4±1 (TA/TB/ETA/ETB)
20.4±1 (TW/ETW)
SM-4TA/TB/ETA/ETB
1.75±0.1
8±0.1
0
φ
1.5
+0.1
SM-4TW/ETW
12±0.1
0
φ
1.5
+0.1
4±0.1
2±0.05
1.75±0.1
0.3
±0.1
Installation example
(SM-4W/EW)
4±0.1
2±0.05
0.3
±0.1
5.5±0.05
12
7.5±0.05
Installation example
(SM-4A/EA)
4.5
Direction of feed
Direction of feed
5.75
Vinyl bag
packaging specifications
·
Unit of
bulk
in
vinyl bag
packaging is 50 pcs. per pack.
·
Boxing of
bulk
in
vinyl bags
is performed
with
200 pcs. per
box.
16
60
0
(TA/TB/ETA/ETB)
8
0±1 (T
W
/ET
W
)
+1
Document Number: 58008
Revision: 13-Jul-05
For technical questions contact: copalsupport@vishay.com
www.vishay.com
3
SM-4
Surface Mount Cermet Trimmers (12 Turns)
Vishay
MECHANICAL SPECIFICATIONS
Mechanical turn
Operating torque
Mechanical stop
Rotational life
Thrust to shaft
Solderability
12 turns
20 mN m {204 gf cm} maximum
Clutch action
200 cycles [∆ R/R
≤ ±
(3
Ω
+ 3 %)]
5 N {0.51 kgf} minimum
Sn-Pb: 235
°C,
2 s
Sn-Cu (Lead (Pb)-free): 245
±
3
°C,
2
∼
3s
5 N {0.51 kgf} 10 s
Width 90 mm, bend 3 mm, 5 s, 1 time
5 N {0.51 kgf} 10s
ENVIRONMENTAL SPECIFICATIONS
Test item
Thermal shock
Humidity
Test conditions
- 65
∼
150
°C
(0.5 h), 5 cycles
- 10
∼
65
°C
(Relative humidity
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
∼
2000Hz,
3 directions, 12
times each
85
°C,
0.25 W, 1000
h
- 65
°C,
2 h
150
°C,
250 h
85
°C,
60 s
Sn-Pb
260
°C,
10 s or
215
°C,
35 s
Sn-Cu
Flow: 260
°C ±
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
[∆R/R
≤
1%]
[S.S.
≤
1 %]
Specifications
[∆R/R
≤
2 %]
[S.S.
≤
1 %]
[∆R/R
≤
2 %]
Shock
Shear (Adhesion)
Substratre bending
Pull-off strength
Vibration
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
±
100
10
Ω ∼
2 MΩ
±
10 %
0.25 W (85
°C)
0 W (150
°C)
Linear law (B)
DC300 V or power rating,
whichever is smaller
100 mA or power rating,
whichever is smaller
10 turns
1 % or 2
Ω,
whichever is greater
1 % or 3
Ω,
whichever is greater
- 6
∼
150
°C
10
-6
/°C maximum
1000 MΩ minimum (DC500 V)
AC600 V, 60 s
Approx. 0.2 g
Low temperature
operation
High temperature
exposure
Immersion seal
Soldering heat
Load Life
[∆R/R
≤
2 %]
[S.S.
≤
1 %]
[∆R/R
≤
1 %]
[S.S.
≤
1 %]
[∆R/R
≤
2 %]
[S.S.
≤
1 %]
No leaks (No
continuous bubbles)
[∆R/R
≤
1 %]
Reflow profile for soldering heat evaluation
(°C)
250
Temperat
u
re
200
150
100
50
+5
Peak : 250
0
°C
Over 230 °C
180°C
150°C
90 ± 30 s
30 ± 10 s
Heating time
Soldering Zone
Pre Heating Zone
Reflow : two times maximum
Document Number: 58008
Revision: 13-Jul-05
For technical questions contact: copalsupport@vishay.com
www.vishay.com
4
SM-4
Vishay
Surface Mount Cermet Trimmers (12 Turns)
MAXIMUM INPUT RATINGS
Nominal
resistance
values (Ω)
10*
20*
50
100
200
500
1k
2k
5k
10 k
20 k
50 k
100 k
200 k
500 k
1M
2M
Resistance
code
100
200
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
Maximum
input voltage
(V)
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
6
7
8
9
10
11
12
Base element
4
5
Clutch springt
Terminal pin
2
3
Cover
Rotor gear
1
3
4
2
1
12
5
11
6
7
8
9
10
CONSTRUCTION
Part Name
Housing
Material
PPS
(Polyphenylenesulp
hide)
Stainless steel
PPS
(Polyphenylenesulp
hide)
Stainless steel
Sn-Pb
Sn-C
u
Resistive element
Electrode
Wiper
“O” ring
Base
Shaft
Copper alloy,
Solder-plated
Copper,
Sn-Cu-plated
Ceramic
RuO
2
cermet
Ag-Pd cermet
Multi metal alloy
Silicone rubber
Epoxy
Metal
UL-94HB
UL-94V-O
-
Flammability
UL-94V-O
-
UL-94V-O
-
-
-
-
-
-
*The products inticated by
∗
mark are manufactured upon
receipt of order basis
CFCs, Halon, Carbon tetrachloride and designated
bromic flame retardant PBBOs and PBBs are not used
in our products.
LIST OF PART NUMBERS
Form of packing
Adjustment
position
Shape of terminal
Sn-Pb
Top adjustment
Side adjustment
Pieces in package
W (J-hook)
A (J-hook)
B (Gull wing)
SM-4TW
SM-4TA
SM-4TB
Taping (reel)
Sn-Pb
(Lead (Pb)-free)
SM-4ETW
SM-4ETA
SM-4ETB
Sn-Pb
SM-4W
SM-4A
SM-4B
50 pcs./pack
Vinyl bag
Sn-Pb
(Lead (Pb)-free)
SM-4EW
SM-4EA
SM-4EB
TW, ETW: 250 pcs./reel
TA, ETA: 500 pcs./reel
TB, ETB: 500 pcs./reel
Document Number: 58008
Revision: 13-Jul-05
For technical questions contact: copalsupport@vishay.com
www.vishay.com
5
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