SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN)
RoHS compliant
ST-4
INTERNAL STRUCTURE
1
7
2
6
5
3
4
9
Part name
8
Material
Flammability
1
Wiper
Multi metal alloy
■FEATURES
2
Cover
Stainless steel (SUS 304)
● 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
3
Housing
4
Terminal pin
Copper alloy, Sn-Cu-plated
5
Base element
Ceramic
6
“O” ring
7
Rotor
8
Electrode
Ag-Pd cermet
9
Resistive element
RuO2 cermet
—
UL-94V-0
Epoxy
—
Silicone rubber
UL-94HB
Polyphenylenesulphide
UL-94V-0
—
■PART NUMBER DESIGNATION
S T - 4 E T A 2 0 0 Ω ( 2 0 1 )
Resistance code
Series name (minus slot)
Terminal pin
Resistance value
E：Sn-Cu (Lead-free)
Product shape (Shape of terminal)
Form of packaging
A, G：J-hook
B, D, H：Gull wing
C, F：Through hole pins
T：Taping (Reel)
Blank：Bulk in plastic bag
S T - 4 2 E T A 2 0 0 Ω ( 2 0 1 )
Series name (cross slot)
Terminal pin
Resistance code
Resistance value
E：Sn-Cu (Lead-free)
Product shape (Shape of terminal)
Form of packaging
T：Taping (Reel)
Blank：Bulk in plastic bag
※Please refer to the LIST OF PART NUMBERS when placing orders.
ɷ Specifications are subject to change without notice.
A, G：J-hook
B, D, H：Gull wing
C, F：Through hole pins
COPAL ELECTRONICS
ST-4
SURFACE MOUNT TRIMMERS
■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)
〈Nominal resistance values〉
A 10 Ω A 20 Ω
Form of packaging
Taping (reel)
Plastic bag
ST-4/42ETA
ST-4/42EA
ST-4/42ETB
ST-4/42EB
ST-4/42EC
A ST-4/42ETD
A ST-4/42ED
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
：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¤
A ST-4/42EF
G (J-hook)
Side
adjustment H (Gull wing)
ST-4/42ETG
ST-4/42EG
ST-4/42ETH
ST-4/42EH
Pieces in package
500 pcs./reel
100 pcs./pack
A印の型式、公称抵抗値は受注生産となります。
The products indicated by A mark are manufactured upon receipt of order basis.
※ C slot : ST-4E□, B slot : ST-42E□
Mechanical angle
240° (1 turn)
Operating torque
10 mN·m {102 gf·cm} maximum
Stop strength
30 mN·m {306 gf·cm} minimum
10 Ω ~ 2 MΩ
Rotational life
100 cycles [ΔR/R ≦ ± (2 Ω +3 %)]
± 20 %
Thrust to rotor
5 N {0.51 kgf} minimum
■ELECTRICAL CHARACTERISTICS
Nominal resistance range
■MECHANICAL CHARACTERISTICS
Resistance tolerance
Solderability
245 ± 3 °C, 2 ~ 3 s
Linear law (B)
Shear (Adhesion)
5 N {0.51 kgf} 10 s
Maximum input voltage
DC200 V or power rating, whichever is smaller
Substrate bending
Width 90 mm, bend 3 mm, 5 s, 1 time
Maximum wiper current
100 mA or power rating, whichever is smaller
Pull-off strength
Effective electrical angle
210° (1 turn)
Power ratings
0.25 W (70 °C) 0 W (125 °C)
Resistance law
End resistance
1 % or 2 Ω, whichever is greater
C.R.V.
1 % or 3 Ω, whichever is greater
−55 ~ 125 °C
Operating temp. range
Temp. coefficient
Insulation resistance
10 Ω ~ 50 Ω : ± 250 10-6/°C maximum
100 Ω ~ 2 MΩ : ± 100 10-6/°C maximum
1000 MΩ minimum (DC500 V)
Dielectric strength
Net weight
Reflow profile for soldering heat evaluation〉
(°C)
250
Peak : 250
+5
0
°C
Temperature
Over 230 °C
200
150
100
50
180 °C
150 °C
{ }：Reference only
■ENVIRONMENTAL CHARACTERISTICS
Test item
Thermal shock
Humidity
Shock
AC500 V, 60 s
Approx. 0.12 g (ST-4EA, EB, EC, ED, EF)
Approx. 0.22 g (ST-4EG, EH)
5 N {0.51 kgf} 10 s
Test conditions
Specifications
−65 ~ 125 °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
Load life
70 °C, 0.25 W 1000 h
[ΔR/R ≦ 2 %]
[ΔR/R ≦ 1 %]
[S.S. ≦ 1 %]
[ΔR/R ≦ 3 %]
[S.S. ≦ 1 %]
[ΔR/R ≦ 2 %]
[S.S. ≦ 2 %]
[ΔR/R ≦ 3 %]
[S.S. ≦ 2 %]
Low temp. operation
−55 °C, 2 h
High temp. exposure
125 °C, 250 h
Immersion seal
85 °C, 60 s
No leaks (No continuous bubbles)
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
[ΔR/R ≦ 1 %]
Pre Heating Zone
90 ± 30 s
30 ± 10 s
Heating time
Soldering Zone
Reflow : two times maximum
ΔR/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
ST-4
SURFACE MOUNT TRIMMERS
■MAXIMUM INPUT RATINGS
Nominal resistance values (Ω)
A
A
Resistance code
Maximum input voltage (V)
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
200
200
200
200
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
● ST-4EB
2
1.5
2
0
4
2
0
1.6
1.6
1.6
2.35
1.6
2.35
2.35
● ST-4EG
● ST-4EH
2
2.8
0.8
2
0.8
2
0
3.3
2.5
1.6
2.35
0.3
0
0.3
1.6
1.6
1.6
1.5
2
2
0
5.6
2
2
2
(Unit: mm)
● ST-4ED
1.6
1.6
Note) The zero point is the center of mounting.
2.35
■ 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
ST-4
SURFACE MOUNT TRIMMERS
■OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : ± 0.3 (Unit: mm)
1
3
● ST-4EA
Top adjustment
CW rotation
2
※Note the terminal position.
0.6 W × 2.3 L × 0.5 D
2
1.2
Lead-free Identification mark
3
5.2 – 00.5
4.5
Resistance code &
Production date code
t = 0.15
3
5
1
0.35 min.
● ST-4EB
Top adjustment
0.6 W × 2.3 L × 0.5 D
4.5
5
1
t = 0.15
2.3
0.35 min.
Lead-free Identification mark
3
1.2
6.2
Resistance code &
Production date code
2
2 – 0.8
2.35
2.3
2 – 0.8
2.35
● ST-4EC
Top adjustment
0.6 W × 2.3 L × 0.5 D
2
4.5
3
3 – 0.6
Resistance code &
Production date code
5
1
5
Lead-free Identification mark
2.3
2.54
4±1
t = 0.15
● ST-4EG
Side adjustment
0.6 W × 2.3 L × 0.5 D
Resistance code &
Production date code
2.35
4.5
3
1.45
5
2 – 0.8
(2.1)
t = 0.15
0.95
0
5.7 + 0.4
3.1
1
Lead-free Identification mark
2
1.2
■ 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
ST-4
SURFACE MOUNT TRIMMERS
■OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : ± 0.3 (Unit: mm)
1
3
● ST-4EH
Side adjustment
CW rotation
2
※Note the terminal position.
0.6 W × 2.3 L × 0.5 D
5
2.35
Resistance code &
Production date code
2 – 0.8
4.5
1
0
5.7+ 0.4
3.1
3
Lead-free Identification mark
2
0.8
1.2
6.1
● ST-4ED
Rear adjustment
t = 0.15
＜Semi-standard products＞
0.6 W × 2.3 L × 0.5 D
1.2
7.2
4.5
2
0.5
Resistance code &
Production date code
0.5
Lead-free Identification mark
3
1
5
2 – 0.8
2.3
2.8
● ST-4EF
Rear adjustment
t = 0.15
＜Semi-standard products＞
0.6 W × 2.3 L × 0.5 D
2
3 – 0.6
6.35
Resistance code &
Production date code
4.5
3
2.35
Lead-free Identification mark
1
5
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.
COPAL ELECTRONICS
ST-4
SURFACE MOUNT TRIMMERS
+0.1
0
φ 1.5
<Taping packaging specifications>
8±0.1
● Taping version is packaged in 500 pcs. per reel.
Orders will be accepted for units of 500 pcs., i.e., 500,
1000, 1500 pcs., etc.
● ST-4ETA, ETB and ETD versions are boxed with 4 reels
(2000 pcs.).
ST-4ETG and ETH versions are boxed with one reel
(500 pcs.).
2±0.05
4±0.1
φ 1.5
1.75±0.1
● ST-4ETA/ETB/ETD
■PACKAGING SPECIFICATIONS
0.3±0.1
5.5±0.05
Maximum number of consecutive missing pieces = 2
Leader length and reel dimension are shown in the diagrams below.
12
Installation example
(ST-4EA)
Lead-free Identification mark
2.7 (ST-4ETA/ETB)
3.4 (ST-4ETD)
Direction of feed
● EMBOSSED TAPE DIMENSIONS
Filled
● ST-4ETG/ETH
Empty
8±0.1
Head
End
2±0.1
φ
40 mm min.
20 pitches min.
0
0 .1
Leader
Direction of feed
4±0.1
1.5 +
1.75±0.1
Empty
Installation example
(ST-4EG)
0.3±0.1
12
5.5±0.1
400 mm min.
● REEL DIMENSIONS
（Conforms to JIS C 0806-3）
（In accordance with EIAJ ET-7200A）
(Unit: mm)
Direction of feed
6.4
+1
0
2±0.5
+1
21±0.8
60 0 (TA/TB)
50 min.(TG/TH)
13 (ETA/ETB)
13.4±1 (ETG/ETH)
13±0.2
0
180 –1.5 (ST-4ETA/ETB/ETD)
254 ± 2 (ST-4ETG/ETH)
<Bulk pack specifications>
● Unit of bulk in a plastic bag is 100 pcs. per pack.
● Boxing of bulk in a plastic bag is performed with 500
pcs. per box.
15.4±1 (ETA/ETB/ETD)
17.4±1 (ETG/ETH)
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.