SURFACE MOUNT CERMET TRIMMERS (SINGLE TURN)
RoHS compliant
ST-32
INTERNAL STRUCTURE
2
1
7
6
5
3
4
9 8
Part name
■ FEATURES
ORoHS compliant
ORotor with a cross slot for ease of adjustment
O Leaded terminals provide strong as adhesive strength
against P.C.B. bending
OJ-hook, Gull wing and leaded terminal configurations
OSealed (Washable: Refer to page 698.)
䖃 Resin materials are UL Recognized 94V-0 or 94V-1
equivalent
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
Polyphenylenesulphide
■ PART NUMBER DESIGNATION
S T - 3 2 E T A 1 0 0 Ω ( 1 2 )
Series name
Resistance code
Terminal pin
Resistance value
E:Sn-Cu (Lead-free)
Form of packaging
Product shape (Shape of terminal)
T:Taping (Reel)
Blank:Bulk in plastic bag
A, G:J-hook
B, H:Gull wing
※ Please refer to the LIST OF PART NUMBERS when placing orders.
ST-32
SURFACE MOUNT TRIMMERS
■ LIST OF PART NUMBERS
Adjustment
position
Shape of
terminal
A ( J-hook )
Top
adjustment
B (Gull wing)
G ( J-hook )
Side
adjustment
H (Gull wing)
Pieces in package
〈Nominal resistance values〉
Form of packaging
Taping (reel)
Plastic bag
ST-32ETA
ST-32EA
ST-32ETB
ST-32EB
ST-32ETG
ST-32EG
ST-32ETH
ST-32EH
500 pcs./reel
100 pcs./pack
A 10 Ω A 20 Ω
50 Ω
100 Ω
200 Ω
300 Ω
500 Ω
1kΩ
2kΩ
3kΩ
5kΩ
10 k Ω
20 k Ω
30 k Ω
50 k Ω
100 k Ω
200 k Ω
500 k Ω
1MΩ
2MΩ
Fig.1
The products indicated by A mark are manufactured upon receipt of order basis.
※The part numbers on the left 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.
■ MECHANICAL CHARACTERISTICS
■ ELECTRICAL CHARACTERISTICS
10 Ω ~ 2 M Ω
Nominal resistance range
± 20 %
Resistance tolerance
0.125 W (70 °C) 0 W (125 °C)
Power ratings
Linear law (B)
Resistance law
Maximum input voltage
DC200 V or power rating, whichever is smaller
Maximum wiper current
100 mA or power rating, whichever is smaller
Effective electrical angle
210 ° (1 turn)
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 M Ω : ± 100 10-6/°C maximum
1000 M Ω minimum (DC500 V)
Dielectric strength
AC500 V, 60 s
Approx. 0.05 g (ST-32EA, EB)
Approx. 0.11 g (ST-32EG, EH)
Net weight
〈Reflow profile for soldering heat evaluation〉
(℃)
250
Peak : 250
+5
0
Temperature
150
180 ℃
50
Operating torque
5 mN·m {51 gf·cm} maximum
Stop strength
20 mN·m {204 gf·cm} minimum
Rotational life
100 cycles [ Δ R/R ≦ ± (2 Ω + 3 %)]
Thrust to rotor
5 N {0.51 kgf} minimum
Solderability
245 ± 3 °C, 2 ~ 3 s
Shear (Adhesion)
5 N {0.51 kgf} 10 s
Substrate bending
Width 90 mm, bend 3 mm, 5 s, 1 time
5 N {0.51 kgf} 10 s
Pull-off strength
{ }:Reference only
■ ENVIRONMENTAL CHARACTERISTICS
Test item
Test conditions
Thermal shock − 65 ~ 125 °C (0.5 h), 5 cycles
Humidity
Shock
− 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, 0.125 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
ter minal to backside of board, 5 ~ 6 s, two
times maximum.
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
手はんだ Manual soldering:350 ± 10 °C, 3 ~ 4 s
[ Δ R/R ≦ 1 %]
Pre Heating Zone
150 ℃
90
100
250 ° (1 turn)
℃
Over 230 ℃
200
Mechanical angle
30 s
30
Heating time
10 s
Soldering Zone
Reflow : two times maximum
Δ R/R:Change in total resistance
S.S. :Setting stability
ST-32
SURFACE MOUNT TRIMMERS
■ MAXIMUM INPUT RATINGS
Nominal resistance
Maximum input
Resistance code
values ( Ω )
voltage (V)
A
A
Maximum wiper
current (mA)
10
20
50
100
200
300
500
11
21
51
12
22
32
52
1.00
1.58
2.50
3.53
5.00
6.12
7.91
100
79.1
50.0
35.4
25.0
20.4
15.8
1k
2k
3k
5k
10 k
20 k
30 k
50 k
13
23
33
53
14
24
34
54
11.2
15.8
19.4
25.0
35.4
50.0
61.2
79.1
11.2
7.91
6.45
5.00
3.54
2.50
2.04
1.58
100 k
200 k
500 k
1M
2M
15
25
55
16
26
112
158
200
200
200
1.12
0.79
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
OST-32EA, EG
OST-32EB, EH
(Unit : mm)
1.6
0.9
2.2
1.5
1.6
1
0.9
4.6
0
1.2
0.8
1.9
1.2
1
6
0
1.2
3.2
For reflow soldering
1.2
0.8
1.2
3.2
Note) The zero point is the center of mounting.
ST-32
SURFACE MOUNT TRIMMERS
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : ± 0.3 (Unit : mm)
1
3
OST-32EA
Top adjustment
CW rotation
2
※ Note the terminal position.
Cross slot for a 0 bit driver, depth : 0.45
2
Production date code & Lead-free Identification mark
1 digit (Location reversed every 2 years)
1.5
0.5
1
2
3.5
1.9
3.4
0.6
0.05
3.4
3
1
Resistance code 2 digits
2
2 – 0.7
t = 0.12
2.1
OST-32EB
Top adjustment
Cross slot for a 0 bit driver, depth : 0.45
2
1.9
1
4.4
Production date code & Lead-free Identification mark
1 digit (Location reversed every 2 years)
1.5
0.5
3.4
2
0.05
3
3.4
1
Resistance code 2 digits
2
t = 0.12
2.1
2 – 0.7
ST-32
SURFACE MOUNT TRIMMERS
■ OUTLINE DIMENSIONS
Unless otherwise specified, tolerance : ± 0.3 (Unit : mm)
1
3
OST-32EG
Side adjustment
CW rotation
2
※ Note the terminal position.
Cross slot for a 0 bit driver, depth : 0.45
Production date code & Lead-free Identification mark
1 digit (Location reversed every 2 years)
Adjustment
3.6
1.5
0.5
3
3.5
1.7
1.1
2.6
1.9
4.7
1
0.2
1
2.4
2 – 0.6
1
t = 0.12
Resistance code 2 digits
2
OST-32EH
Side adjustment
Cross slot for a 0 bit driver, depth : 0.45
3.6
1.5
Production date code & Lead-free Identification mark
1 digit (Location reversed every 2 years)
Adjustment
3
3.5
0.5
2.4
1
2 – 0.6
1.7
1.3
2.6
1.9
4.7
1.4
0.2
t = 0.12
Resistance code 2 digits
1
2
ST-32
SURFACE MOUNT TRIMMERS
■ PACKAGING SPECIFICATIONS
OTaping version is packaged in 500 pcs. per reel.
Orders will be accepted for units of 500 pcs., i.e., 500,
1000, 1500 pcs., etc.
O ST-32ETA, ETB versions are boxed with 4 reels (2000
pcs.). ST-32ETG, 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
diagrams below.
OEMBOSSED TAPE DIMENSIONS
OREEL DIMENSIONS
(Conforms to JIS C 0806-3)
(In accordance with EIAJ ET-7200A)
(Unit: mm)
Empty
Filled
Empty
13 +10 (ETA/ETB)
13.4±1 (ETG/ETH)
Head
φ 21±0.8
40 mm min.
φ 60 +10 (ETA/ETB)
φ 50 min.(ETG/ETH)
End
2±0.5
20 pitches min.
Leader
Direction of feed
400 mm min.
φ 13±0.2
15.4±1 (ETA/ETB)
17.4±1 (ETG/ETH)
0
φ 180 –1.5
(ST-32ETA/ETB)
φ 254±2 (ST-32ETG/ETH)
OST-32ETA, ETB
OST-32ETG, ETH
0.1
8
2
0.1
0.1
4
0.1
.5
1
Installation example
(ST-32EA)
2.5
3
0.4
0.1 Installation example
(ST-32EH)
0.1
5.5
12
5.5 ± 0.05
.1
+0 0
2
1
3
1
Direction of feed
Direction of feed
OUnit of bulk in a plastic bag is 100 pcs. per pack.
O Boxing of bulk in a plastic bag is performed with 500
pcs. per box.
12
.1
+0 0
.5
1
2
0.3
0.1
2 ± 0.05
1.75
4 ± 0.1
1.75 ± 0.1
8 ± 0.1
5.5 max.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Nidec:
ST-32ETB201 ST-32ETA104 ST-32ETA202 ST-32ETB102 ST-32ETA204 ST-32ETB202 ST-32ETA504 ST32ETB502 ST-32ETA101 ST-32ETA103 ST-32ETA502 ST-32ETA102 ST-32ETA501 ST-32ETA105 ST-32ETB103
ST-32ETB203 ST-32ETB101 ST-32ETB503 ST-32ETA500 ST-32ETA503 ST-32ETA203 ST-32ETA201 ST32ETB501 ST-32ETB104 ST-32EA100 ST-32EA101 ST-32EA102 ST-32EA103 ST-32EA104 ST-32EA105 ST32ETH500 ST-32ETH501 ST-32ETH502 ST-32ETH503 ST-32ETH504 ST-32ETH201 ST-32ETH202 ST32ETH203 ST-32ETH204 ST-32ETH205 ST-32ETH302 ST-32ETH101 ST-32ETH102 ST-32ETH103 ST32ETH104 ST-32ETH105 ST-32ETH200 ST-32ETG500 ST-32ETG501 ST-32ETG502 ST-32ETG503 ST32ETG504 ST-32ETH100 ST-32ETG202 ST-32ETG203 ST-32ETG204 ST-32ETG301 ST-32ETG302 ST32ETG303 ST-32ETG102 ST-32ETG103 ST-32ETG104 ST-32ETG105 ST-32ETG200 ST-32ETG201 ST32ETB302 ST-32ETB303 ST-32ETB500 ST-32ETB504 ST-32ETG100 ST-32ETG101 ST-32ETB100 ST-32ETB105
ST-32ETB200 ST-32ETB204 ST-32ETB205 ST-32ETB301 ST-32ETA100 ST-32ETA200 ST-32ETA205 ST32ETA301 ST-32ETA302 ST-32ETA303 ST-32EH204 ST-32EH500 ST-32EH501 ST-32EH502 ST-32EH503 ST32EH504 ST-32EH104 ST-32EH105 ST-32EH200 ST-32EH201 ST-32EH202 ST-32EH203 ST-32EG503 ST32EG504 ST-32EH100 ST-32EH101 ST-32EH102