45ߏਤ
SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN)
RoHS compliant
ST-4
INTERNAL STRUCTURE
1
7
2
6
5
3
4
9
Part name
■ 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 page 698.)
● Stopper structure prevents terminal pin from being open.
● Cross slot rotor suitable for automatic adjustment
● Resin materials are UL Recognized 94V-0 or 94V-1 equivalent
8
Material
1
Wiper
Multi metal alloy
2
Cover
Stainless steel (SUS 304)
3
Housing
4
Terminal pin
5
Base element
6
“O” ring
7
Rotor
8
Electrode
Ag-Pd cermet
9
Resistive element
RuO2 cermet
Epoxy
Copper alloy, Sn-Cu-plated
Ceramic
Silicone rubber
PPS
Polyphenylenesulphide
■ 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
T:Taping (Reel)
Blank:Bulk in plastic bag
A:J-hook (Top adjustment)
B:Gull wing Top adjustment)
C:Through hole pins (Top adjustment)
D:Gull wing (Rear adjustment)
F: Through hole pins (Rear adjustment)
G:J-hook (Side adjustment)
H:Gull wing (Side adjustment)
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.
A:J-hook (Top adjustment)
B:Gull wing (Top adjustment)
C:Through hole pins (Top adjustment)
D:Gull wing (Rear adjustment)
F: Through hole pins (Rear adjustment)
G:J-hook (Side adjustment)
H:Gull wing (Side adjustment)
ST-4
SURFACE MOUNT TRIMMERS
■ LIST OF PART NUMBERS
Adjustment
position
Top
adjustment
Rear
adjustment
Side
adjustment
Form of packaging
Shape of
terminal
( J-hook )
B ( Gull wing )
C ( Through hole pins )
D ( Gull wing )
F ( Through hole pins)
G ( J-hook )
H ( Gull wing )
A
Pieces in package
〈Nominal resistance values〉
Taping (reel)
Plastic bag
ST-4/42ETA
ST-4/42EA
ST-4/42ETB
ST-4/42EB
A ST-4/42ETD
A ST-4/42ED
ST-4/42EC
A10 Ω A20 Ω 50 Ω
100 Ω 200 Ω 500 Ω
1 kΩ
2 kΩ
10 kΩ 20 kΩ 5 0kΩ 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 (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
ST-4/42ETG
ST-4/42EG
ST-4/42ETH
ST-4/42EH
500 pcs./reel
100 pcs./pack
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 [ Δ R/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
Power ratings
0.25 W (70 °C) 0 W (125 °C)
Resistance law
Effective electrical angle
1 % or 2 Ω , whichever is greater
C.R.V.
1 % or 3 Ω , whichever is greater
− 55 ~ 125 °C
Operating temp. range
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)
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
Peak : 250
+5
0
°C
Temperature
Over 230 °C
200
150
100
50
180 °C
150 °C
■ ENVIRONMENTAL CHARACTERISTICS
Test item
Humidity
Shock
30 ± 10 s
Heating time
− 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
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 %]
[ Δ R/R ≦ 2 %]
[S.S. ≦ 2 %]
[ Δ R/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
[ Δ R/R ≦ 1 %]
Pre Heating Zone
90 ± 30 s
Test conditions
Thermal shock − 65 ~ 125 °C (0.5 h), 5 cycles
AC500 V, 60 s
Dielectric strength
Net weight
{ }:Reference only
210° (1 turn)
End resistance
Temp. coefficient
5 N {0.51 kgf} 10 s
Soldering Zone
リフロー回数:2回 Reflow : two times maximum
Δ R/R:Change in total resistance
S.S. :Setting stability
ST-4
SURFACE MOUNT TRIMMERS
■ MAXIMUM INPUT RATINGS
Nominal resistance values (Ω)
Resistance code
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
1 k
2 k
5 k
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
1 M
2 M
104
204
504
105
205
158
200
200
200
200
1.58
1.00
0.40
0.20
0.10
A
A
Maximum input voltage (V) Maximum wiper current (mA)
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
2
2
2
(Unit: mm)
● ST-4ED
5.6
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
2.35
3.3
2.5
1.6
0.3
0
0.3
1.6
1.6
1.6
1.5
2
2
0
1.6
1.6
2.35
Note) The zero point is the center of mounting.
ST-4
SURFACE MOUNT TRIMMERS
ST-4A 外形図
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : ± 0.3 (Unit: mm)
①
CW rotation
● ST-4EA
Top adjustment
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
抵抗値及び製造年月記号
Resistance code &
Production date code
4.5
4B 外形図
t = 0.15
3
③
5
1
2 – 0.8
2.35
2.3
0.35 min.
● ST-4EB
Top adjustment
0.6 W × 2.3 L × 0.5 D
4.5
Lead-free Identification mark
3
5
1
t = 0.15
2.3
● ST-4EC
Top adjustment
0.35 min.
T-4C 外形図
1.2
6.2
抵抗値及び製造年月記号
Resistance code &
Production date code
2
2 – 0.8
2.35
0.6 W × 2.3 L × 0.5 D
2
3 – 0.6
4.5
抵抗値及び製造年月記号
Resistance code &
Production date code
5
Lead-free Identification mark
外形図
3
5
1
2.3
2.54
4±1
t = 0.15
● ST-4EG
Side adjustment
5
Resistance code &
Production date code
4.5
3
1.45
0.6 W × 2.3 L × 0.5 D
2 – 0.8
2.35
(2.1)
t = 0.15
0.95
0
5.7 + 0.4
3.1
1
Lead-free Identification mark
2
1.2
ST-4
SURFACE MOUNT TRIMMERS
ST-4H 外形図
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : ± 0.3 (Unit: mm)
①
CW rotation
● ST-4EH
Side adjustment
②
※ Note the terminal position.
0.6 W × 2.3 L × 0.5 D
ST-4D 外形図
5
2 – 0.8
4.5
Resistance code &
Production date code
2.35
1
0
5.7+ 0.4
3.1
3
Lead-free Identification mark
2
0.8
6.1
● ST-4ED
Rear adjustment
1.2
t = 0.15
< Semi-standard products >
0.6 W × 2.3 L × 0.5 D
2
1.2
0.5
Resistance code &
Production date code
4.5
Lead-free Identification mark
0.5
7.2
F 外形図
③
3
1
5
2 – 0.8
2.3
2.8
● ST-4EF
Rear adjustment
t = 0.15
2.35
< Semi-standard products >
0.6 W × 2.3 L × 0.5 D
3 – 0.6
2
4.5
6.35
Resistance code &
Production date code
Lead-free Identification mark
3
1
5
2.5±0.5
● ST-42E
CROSS SLOT DIMENSION
0.6 W × 2.3 L × 0.5 D
Cross slot screwdriver 0 bit : 0.8 D
2.3
t = 0.15
2.54
ST-4
SURFACE MOUNT TRIMMERS
■ PACKAGING SPECIFICATIONS
● 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.).
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)
(In accordance with EIAJ ET-7200A)
Empty
Filled
(Unit: mm)
Empty
+1
0
13 (ETA/ETB)
13.4±1 (ETG/ETH)
Head
40 mm min.
21±0.8
20 pitches min.
60 0 (TA/TB)
50 min.(TG/TH)
End
2±0.5
+1
Leader
400 mm min.
Direction of feed
13±0.2
15.4±1 (ETA/ETB/ETD)
17.4±1 (ETG/ETH)
0
180 –1.5 (ST-4ETA/ETB/ETD)
254 ± 2 (ST-4ETG/ETH)
● ST-4ETA/ETB/ETD
4±0.1
φ 1.5
0.3±0.1
2±0.1
4±0.1
φ
1.5 +
ԖϑϦʔࣝผ߸ه
Lead-free Identification mark
Ҿ͖ग़͠ํ
2.7 (ST-4ETA/ETB)
3.4 (ST-4ETD)
Direction of feed
5.5±0.1
ணྫ 45&"
Installation example
(ST-4EA)
12
5.5±0.05
0
0.1
● 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.
Ҿ͖ग़͠ํ
Direction of feed
ணྫ (ST-4EG)
0.3±0.1
Installation example
(ST-4EG)
12
2±0.05
8±0.1
1.75±0.1
8±0.1
● ST-4ETG/ETH
1.75±0.1
+0.1
0
φ 1.5
6.4
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