SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN)
ST-4
INTERNAL STRUCTURE
1
2
7
6
5
3
4
Part name
RoHS compliant
9
Material
8
Flammability
—
1
Wiper
Cover
Housing
Terminal pin
Base element
“O” ring
Rotor
Electrode
Resistive element
Multi metal alloy
Stainless steel (SUS 304)
Epoxy
Copper alloy, Sn-Cu-plated
—
Ceramic
Silicone rubber
Polyphenylenesulphide
Ag-Pd cermet
—
RuO
2
cermet
UL-94HB
UL-94V-0
UL-94V-0
■
FEATURES
●
RoHS compliant
●
Wide variety (7 types) to choose from
●
Automatic mounting is possible (Taping)
●
Flow/reflow soldering is possible
●
Sealed construction (Washable: Refer to A-328)
●
Stopper structure prevents terminal pin from being open.
●
Cross slot rotor suitable for automatic adjustment
2
3
4
5
6
7
8
9
■
PART NUMBER DESIGNATION
S T - 4 E T A 2 0 0
Ω
( 2 0 1 )
Series name (minus slot)
Terminal pin
E：Sn-Cu (Lead-free)
Resistance code
Resistance value
Product shape (Shape of terminal)
Form of packaging
T：Taping (Reel)
Blank：Bulk in plastic bag
A, G：J-hook
B, D, H：Gull wing
C, F：Through hole pins
S T - 4 2 E T A 2 0 0
Ω
( 2 0 1 )
Series name (cross slot)
Terminal pin
E：Sn-Cu (Lead-free)
Resistance code
Resistance value
Product shape (Shape of terminal)
Form of packaging
T：Taping (Reel)
Blank：Bulk in plastic bag
A, G：J-hook
B, D, H：Gull wing
C, F：Through hole pins
※Please
refer to the LIST OF PART NUMBERS when placing orders.
Specifications are subject to change without notice.
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-4
■
LIST OF PART NUMBERS
Adjustment Shape of terminal
position
A (
J-hook
)
Top
B (
Gull wing
)
adjustment
C (
Through hole pins
)
D (
Gull wing
)
Rear
adjustment F (
Through hole pins
)
G (
J-hook
)
Side
adjustment H (
Gull wing
)
Pieces in package
Form of packaging
Taping (reel)
ST-4/42ETA
ST-4/42ETB
Plastic bag
ST-4/42EA
ST-4/42EB
ST-4/42EC
A
ST-4/42ETD
A
ST-4/42ED
A
ST-4/42EF
ST-4/42ETG
ST-4/42ETH
500 pcs./reel
ST-4/42EG
ST-4/42EH
100 pcs./pack
〈
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
：
Not manufactured
※
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.
※
Cross slot available : ST-42E¤
■
MECHANICAL CHARACTERISTICS
Mechanical angle
Operating torque
240° (1 turn)
10 mN·m {102 gf·cm} maximum
30 mN·m {306 gf·cm} minimum
100 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
A
印の型式、
公称抵抗値は受注生産と り
な ます
。
The products indicated by
A
mark are manufactured upon receipt of order basis.
※
C
slot : ST-4E□,
B
slot : ST-42E□
■
ELECTRICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
Power ratings
Resistance law
Maximum input voltage
Maximum wiper current
Effective electrical angle
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
10
Ω
~ 2 MΩ
±
20 %
0.25 W (70 °C) 0 W (125 °C)
Linear law (B)
DC200 V or power rating, whichever is smaller
100 mA or power rating, whichever is smaller
210° (1 turn)
1 % or 2
Ω,
whichever is greater
1 % or 3
Ω,
whichever is greater
−55
~ 125 °C
10
Ω
~ 50
Ω
:
±
250 10 /°C maximum
100
Ω
~ 2 MΩ :
±
100 10
-6
/°C maximum
-6
Stop strength
Rotational life
Thrust to rotor
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
{ }
：
Reference only
■
ENVIRONMENTAL CHARACTERISTICS
Test item
Thermal shock
Humidity
Shock
Vibration
Load life
Test conditions
−65
~ 125 °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
70 °C, 0.25 W 1000 h
Specifications
[
Δ
R/R
≦
2 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
2 %]
[
Δ
R/R
≦
1 %]
[S.S.
≦
1 %]
[
Δ
R/R
≦
3 %]
[S.S.
≦
1 %]
1000 MΩ minimum (DC500 V)
AC500 V, 60 s
Approx. 0.12 g (ST-4EA, EB, EC, ED, EF)
Approx. 0.22 g (ST-4EG, EH)
Reflow profile for soldering heat evaluation
〉
(°C)
250
Temperature
200
150
100
50
Peak : 250
+5
0
Low temp. operation
High temp. exposure
Immersion seal
−55
°C, 2 h
125 °C, 250 h
85 °C, 60 s
°C
[
Δ
R/R
≦
2 %]
[S.S.
≦
2 %]
[
Δ
R/R
≦
3 %]
[S.S.
≦
2 %]
No leaks (No continuous bubbles)
Over 230
°C
180
°C
150
°C
Pre Heating Zone
90
±
30 s
30
±
10 s
Heating time
Soldering Zone
Soldering heat
Flow : 260
±
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
[
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.
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-4
■
MAXIMUM INPUT RATINGS
Nominal resistance values (Ω)
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
200
200
200
200
Maximum wiper current (mA)
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
100
70.7
50.0
35.4
22.4
15.8
11.2
7.07
5.00
3.54
2.24
1.58
1.00
0.40
0.20
0.10
The products indicated by
A
mark are manufactured upon
receipt of order basis.
■
RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS
●
ST-4EA
2
●
ST-4EB
2
●
ST-4ED
2
(Unit: mm)
2
2
2
2
2
4
0
0
0
1.6
2.35
1.6
1.6
2.35
1.6
1.6
2.35
1.6
●
ST-4EG
●
ST-4EH
2
2
0.8
0.8
0
0.3
2.5
0.3
2
0
3.3
1.6
1.6
2.35
1.6
1.6
2.35
2.8
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.
1.5
5.6
1.5
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-4
■
OUTLINE DIMENSIONS
Unless otherwise specified, tolerance :
±
0.3 (Unit: mm)
1
3
CW rotation
●
ST-4EA
Top adjustment
2
0.6 W
×
2.3 L
×
0.5 D
Resistance code &
Production date code
2
※
Note the terminal position.
1.2
Lead-free Identification mark
0.5
5.2
– 0
4.5
t = 0.15
2 – 0.8
2.35
3
5
1
2.3
0.6 W
×
2.3 L
×
0.5 D
2
Resistance code &
Production date code
0.35 min.
●
ST-4EB
Top adjustment
1.2
4.5
Lead-free Identification mark
0.35 min.
6.2
2 – 0.8
2.35
3
5
1
t = 0.15
2.3
●
ST-4EC
Top adjustment
0.6 W
×
2.3 L
×
0.5 D
2
Resistance code &
Production date code
3 – 0.6
4.5
Lead-free Identification mark
3
5
1
2.3
t = 0.15
4±1
2.54
●
ST-4EG
Side adjustment
0.6 W
×
2.3 L
×
0.5 D
5
4.5
3
1.45
Resistance code &
Production date code
2.35
2 – 0.8
1
0
5.7
+ 0.4
3.1
Lead-free Identification mark
(2.1)
0.95
1.2
t = 0.15
■
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
5
2
3
COPAL ELECTRONICS
SURFACE MOUNT TRIMMERS
ST-4
■
OUTLINE DIMENSIONS
Unless otherwise specified, tolerance :
±
0.3 (Unit: mm)
1
3
CW rotation
●
ST-4EH
Side adjustment
0.6 W
×
2.3 L
×
0.5 D
5
Resistance code &
Production date code
2
※
Note the terminal position.
2.35
4.5
2 – 0.8
3
1
0
5.7
+ 0.4
3.1
Lead-free Identification mark
0.8
6.1
t = 0.15
2
1.2
●
ST-4ED
Rear adjustment
0.6 W
×
2.3 L
×
0.5 D
2
＜
Semi-standard products
＞
1.2
0.5
Resistance code &
Production date code
4.5
Lead-free Identification mark
0.5
7.2
2 – 0.8
2.3
2.8
t = 0.15
3
5
1
2.35
●
ST-4EF
Rear adjustment
0.6 W
×
2.3 L
×
0.5 D
2
Resistance code &
Production date code
＜
Semi-standard products
＞
3 – 0.6
Lead-free Identification mark
3
5
1
2.5±0.5
2.3
t = 0.15
2.54
●
ST-42E
CROSS SLOT DIMENSION
0.6 W
×
2.3 L
×
0.5 D
Cross slot screwdriver 0 bit : 0.8 D
■
Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
6.35
4.5
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