G3
Series
TOCOS
POTENTIOMETERS
®
3mm Surface Mount, Single-Turn, Sealed Cermet Trimmers
Features
3mm square SMD, single-turn, sealed cermet trimmers
Available in J-hook and gull-wing terminal configurations
Top adjustment in single-slot or automatic adjust cross-slot design
Wide temperature range of 55 C to 125 C
Designed for flow, reflow or infrared reflow soldering
Sealed to withstand immersion cleaning processes
Tape and reel packaging
Meets EIA, EIAJ, IPC, VECI standard SMD trimmer designs
Specifications
Electrical
Standard Resistance Range
. . . . . . . . . . . . . . 50Ω to 2MΩ
(standard 1, 2 & 5 sequence)
Resistance Tolerance
. . . . . . . . . . . . . . . . .
20% standard
End Resistance
. . . . . . . . . . 1% or 3Ω, whichever is greater
Resistance Taper
. . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear
Peak Noise (C.R.V.)
. . . . . . . 2% or 3Ω, whichever is greater
Power Rating
. . . . . . 0.125 watt at
70 C; 0 watt at
125 C
Maximum Input Voltage
. . . . . . . . 200VDC or power rating,
whichever is smaller
Temperature Coefficient
. . . .
100 ppm / C, 200Ω to 1MΩ
250 ppm / C, other values
Environmental
Temperature Range
. . . . . . . . . . . . . . . . .
Low Temperature Operation
. . .
55 C to
125 C
55 C, 0.125 watt, 1 hour
∆T/R
)
2%, S.S.
)
2%
High Temperature Exposure
. . . . . . . . . 125 C, 250 hours
∆T/R
)
2%, S.S.
)
2%
Load Life
. . . . . . . . . . . . . . .
70 C, 0.125 watt, 1,000 hours
∆T/R
)
3%, S.S.
)
2%
Thermal Shock
. . . . . . . . . . . . . . . . . . . . . . 55 C, 125 C,
30 minutes each, 5 cycles
∆T/R
)
2%, S.S.
)
1%
Shock
. . . . . . . . . . . . .100G, 6ms, 6 directions, 3 times each
∆T/R
)
1%, S.S.
)
1%
Vibration
. . . . . . . . . . . . . . . . 10-2,000Hz, 1.5mm amplitude,
20G, 12 hours
)
1%, S.S.
)
1%
∆T/R
Humidity
. . . . . . . . . . . . . . . . . . . . . . . . 40 C, 90-95%RH,
0.125 watt, 500 hours
∆T/R
)
3%, S.S.
)
2%
Moisture Resistance
. . . . . . 10 C to 65 C, 80-98%RH,
0.125 watt, 10 cycles, 240 hours
∆T/R
)
3%
Soldering Heat Resistance
. . . . . . . . . . 240 C, 10 seconds
∆T/R
)
1%
Seal Test
. . . . . . . . . . . . . . . . . 85 C, hot water for 1 minute
Rotational Life
. . . .100 cycles without discontinuity, no load
∆T/R
)
5%
∆T/R
= Total Resistance Change; S.S. = Setting Stability ( voltage ratio )
Insulation Resistance
. . . . . . . 100MΩ minimum at 500VDC
Dielectric Strength
. . . . . . . . . . . . . . . . . . 500VAC, 1 minute
Adjustment Travel
. . . . . . . . . . . . . . . . . . . . . . . . . 220
10
Mechanical
Mechanical Travel
. . . . . . . . . . . . . . . . . . . . . . . . . 250
10
Shaft Torque
. . . . . . . . . . . . . . . 50 gf
•
cm (0.69 oz
•
in) max.
Stop Strength
. . . . . . . . . . . . . . 200 gf
•
cm (2.77 oz
•
in) min.
Flammability of Plastic Materials
. . . . . . . Meets UL 94V-0
Nominal Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.068g
Marking
. . . . . . . . . . . . Resistance value or code, date code
8
1177 East Tower Road, Schaumburg, IL 60173
TOCOS
AMERICA, INC.
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
G3 Series
G3A
J-Hook, Single-Slot, Top Adjust
Dimensions
Unit: mm
2.0
0.3
3.4
0.3
1.95
0.3,
0
0.05
1.0
0.15
#2
2
3.2
0.3
0
2.2
0.3
3.5
0.3
3
#3
SLOT
0.55W
42
#1
0.6
1.5L
0.4D
0.3
0.85
0.15
2.25
0.3
G31A
J-Hook, Cross-Slot, Automatic Top Adjust
2.0
0.3
3.4
0.3
1.95
0.3,
0
0.05
1.0
0.15
#2
2
3.2
0.3
0
2.2
0.3
3.5
0.3
3
#3
49
#1
0.6
0.3
0.85
0.15
2.25
0.3
G3B
Gull-Wing, Single-Slot, Top Adjust
2.0
3.4
0.3
0.3
1.0
0.15
0
#2
1.95
0.3,
0.05
2
3.2
0.3
0
2.2
0.3
4.4
0.3
3
#3
SLOT
0.55W
42
#1
1.5L
0.4D
0.6
0.3
0.85
0.15
2.25
0.3
G31B
Gull-Wing, Cross-Slot, Automatic Top Adjust
2.0
3.4
0.3
0.3
1.0
0.15
0
#2
1.95
0.3,
0.05
2
3.2
0.3
0
2.2
0.3
4.4
0.3
3
#3
49
#1
0.6
0.3
0.85
0.15
2.25
0.3
Cross-Slot Dimensions
All G31 Models
1.5
0.6
Electrical Schematic
Unit: mm
ccw
#1
clockwise
#3
cw
1.31
Ø
0.85
0.4
#2
wiper
0.45
0.1
0.5
TOCOS
AMERICA, INC.
1177 East Tower Road, Schaumburg, IL 60173
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
9
G3 Series
Recommended Land Patterns
Flow Soldering Method
G3A & G31A
1.8
Soldering Guidelines
Unit: mm
G3B & G31B
1.8
1.6
2.3
#2
1.0
1.0
5.7
#2
1.0
6.6
R 1.4
2.1
2.3
1.2
0.8
3.2
1.2
1.2
0.8
3.2
1.2
#3
#1
1.0
R 1.4
#3
#1
Reflow Soldering Method
G3A & G31A
1.6
G3B & G31B
1.6
1.5
2.2
#2
0.9
4.6
#3
#1
1.0
1.2
#3
#1
#2
0.9
6.0
1.0
1.9
1.2
0.8
3.2
1.2
0.8
3.2
1.2
1.2
Recommended Soldering Profiles
Flow Soldering Profile
Reflow Soldering Profile
TP 260°C Max.
250
Temperature (°C)
Temperature (°C)
200
150
100
50
Pre-Heat Zone
TM 180°C
Solder Melting Temp.
ts.
*
3~4 sec.
Solder
Melting Time
240
TP
*
240°C Max.
200
150
100
TM 180°C
Solder Melting Temp.
ts.
*
10 sec.
Solder
Melting Time
Pre-Heat Zone
50
1
2
Time (min.)
3
4
1
2
Time (min.)
3
4
10
1177 East Tower Road, Schaumburg, IL 60173
TOCOS
AMERICA, INC.
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
G3 Series
Embossed Tape Dimensions
Tape & Reel Specifications
Unit: mm
Conforms to EIA-481, JIS-C-0806 and EIAJ-RC-1009B
G3AT, G31AT, G3BT, G31BT
8.0
0.1
2.0
4.0
0.1
0.05
Ø
1.5
0.1,
0
1.75
0.1
0.3
0.05
5.5
0.05
12.0
0.2
5.2 3.65
0.1
0.1
4.9
0.1
Direction of Feed
3.9
0.1
Ø
1.6
0.1
2.6
0.1
1.3
0.1
3.6
0.1
Reel Dimensions
Conforms to EIA-481, JIS-C-0806 and EIAJ-RC-1009B
G3AT, G31AT, G3BT, G31BT
13.0
0.3
2.0
Ø
21.0
0.8
0.5
Ø
13.0
0.5
Ø
60.0
1.0, 0
Ø
178.0
2.0
15.4
1.0
500 Pieces Per 7” Reel
TOCOS
AMERICA, INC.
1177 East Tower Road, Schaumburg, IL 60173
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
11
G3 Series
G3
1
A
T
B
105
M
Part Numbering System
Resistance Tolerance: M =
20%
Resistance Code: Expressed in ohms. A three digit code where the first two digits
are significant figures, and the third digit indicates the number of zeros that follow
these figures (i.e., 100 = 10Ω; 101 = 100Ω; 102 = 1,000Ω; 105 = 1,000,000Ω ).
Resistance Taper: B = Linear.
Packaging: T = Tape & Reel; Blank = Bulk.
Terminal Style: A = J-Hook; B = Gull-Wing.
Adjustment Slot: 1 = Cross-Slot Automatic Adjust; Blank = Single-Slot.
TOCOS Series Name.
Part Numbers
Nominal Resistance
Value (
Ω
)
Code
Catalog No.
Tape & Reel
Single-Slot
Catalog No.
Bulk
Potentiometer
Styles
G3A
J-Hook, Single-Slot, Top Adjust
50
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
100,000
200,000
500,000
1,000,000
2,000,000
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
G3AT
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
G3A
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
G3A
G31A
J-Hook, Cross-Slot, Automatic Top Adjust
50
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
100,000
200,000
500,000
1,000,000
2,000,000
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
G31AT
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
G31A
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
G31A
12
1177 East Tower Road, Schaumburg, IL 60173
TOCOS
AMERICA, INC.
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
