SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN)
ST-4
INTERNAL STRUCTURE
1
2
7
6
5
3
RoHS compliant
4
9
Part name
8
Material
Multi metal alloy
Stainless steel (SUS 304)
Epoxy
Copper alloy, Sn-Cu-plated
Ceramic
Silicone rubber
PPS
Polyphenylenesulphide
Ag-Pd cermet
RuO
2
cermet
1
Wiper
Cover
Housing
Terminal pin
Base element
“O” ring
Rotor
Electrode
Resistive element
■
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
2
3
4
5
6
7
8
9
■
PART NUMBER DESIGNATION
S T - 4 E T A 2 0 0
Ω
( 2 0 1 )
Resistance code
Series name (minus slot)
Terminal pin
E：Sn-Cu (Lead-free)
Resistance value
Product shape (Shape of terminal)
Form of packaging
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
E：Sn-Cu (Lead-free)
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)
Resistance code
Resistance value
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
A
Top
adjustment
Shape of
terminal
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
〈
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 5 0kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ
Rear
adjustment
Side
adjustment
(
J-hook
)
B
(
Gull wing
)
C
(
Through hole pins
)
D
(
Gull wing
)
F
(
Through hole pins
)
G
(
J-hook
)
H
(
Gull wing
)
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
ST-4/42ETG
ST-4/42ETH
500 pcs./reel
ST-4/42EG
ST-4/42EH
100 pcs./pack
Pieces in package
The products indicated by
A
mark are manufactured upon receipt of
order basis.
※
C
slot : ST-4E
□
,
B
slot : ST-42E
□
■
MECHANICAL CHARACTERISTICS
Mechanical angle
Operating torque
Stop strength
Rotational life
Thrust to rotor
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
■
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 M
Ω
±
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 M
Ω
:
±
100 10
-6
/°C maximum
-6
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
{ }
：
Reference only
■
ENVIRONMENTAL CHARACTERISTICS
Test item
Test conditions
−
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 %]
Thermal shock
−
65
~
125 °C (0.5 h), 5 cycles
Humidity
Shock
Vibration
Load life
1000 M
Ω
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
180
°C
150
°C
Peak : 250
+5
0
Low temp. operation
High temp. exposure
−
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
Pre Heating Zone
Immersion seal
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 %]
リフロー回数：２回 Reflow
: two times maximum
Δ
R/R：Change in total resistance
S.S.
：Setting
stability
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)
Maximum wiper current (mA)
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
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
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
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
1.6
2.35
1.6
1.6
2.35
1.6
2.35
●
ST-4EG
2
0.8
●
ST-4EH
2
0.8
0
0.3
2.5
0.3
2
0
3.3
1.6
1.6
2.35
2.8
1.6
1.6
2.35
Note) The zero point is the center of mounting.
1.5
1.6
1.6
5.6
2
4
0
2
0
2
0
1.5
SURFACE MOUNT TRIMMERS
ST-4A 外½図
■
OUTLINE DIMENSIONS
●
ST-4EA
Top adjustment
2
ST-4
Unless otherwise specified, tolerance :
±
0.3 (Unit: mm)
①
②
③
CW rotation
0.6 W
×
2.3 L
×
0.5 D
抵抗値及び½造年月記号
Resistance code &
Production date code
0.5
5.2
– 0
※
Note the terminal position.
1.2
4.5
4B 外½図
t = 0.15
3
5
1
2 – 0.8
2.35
2.3
●
ST-4EB
Top adjustment
0.6 W
×
2.3 L
×
0.5 D
2
抵抗値及び½造年月記号
Resistance code &
Production date code
0.35 min.
1.2
T-4C 外½図
4.5
Lead-free Identification mark
0.35 min.
6.2
3
5
1
2 – 0.8
2.35
t = 0.15
2.3
●
ST-4EC
Top adjustment
2
0.6 W
×
2.3 L
×
0.5 D
抵抗値及び½造年月記号
Resistance code &
Production date code
3 – 0.6
4.5
Lead-free Identification mark
外½図
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
Resistance code &
Production date code
4.5
3
1.45
2 – 0.8
2.35
5
1
(2.1)
2
1.2
t = 0.15
0
5.7
+ 0.4
3.1
Lead-free Identification mark
0.95
3
Lead-free Identification mark
SURFACE MOUNT TRIMMERS
ST-4
ST-4H 外½図
■
OUTLINE DIMENSIONS
●
ST-4EH
Side adjustment
0.6 W
×
2.3 L
×
0.5 D
Unless otherwise specified, tolerance :
±
0.3 (Unit: mm)
①
②
※
Note the terminal position.
③
CW rotation
ST-4D 外½図
0
5.7
+ 0.4
3.1
5
Resistance code &
Production date code
4.5
2 – 0.8
3
2.35
1
Lead-free Identification mark
0.8
2
6.1
t = 0.15
1.2
●
ST-4ED
Rear adjustment
0.6 W
×
2.3 L
×
0.5 D
2
＜
Semi-standard products
＞
1.2
0.5
F 外½図
4.5
Resistance code &
Production date code
0.5
7.2
Lead-free Identification mark
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
6.35
4.5
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