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RA12 Series
TOCOS
POTENTIOMETERS
(R)
12mm Round, Single-Turn, Through-Hole Sealed Wirewound Trimmers
Features
12mm round, single-turn, through-hole, sealed wirewound trimmers Top and side adjust styles available Low equivalent noise resistance High setting stability Low temperature coefficient Long rotational life Meets UL 94V-0 flammability requirements Sealed to withstand wave soldering and immersion cleaning processes
Specifications
Electrical
Standard Resistance Range . . . . . . . . . . . . . 10 to 20k (standard 1, 2 & 5 sequence ) Resistance Tolerance . . . . . . . . . . . . . . . . . 10% standard End Resistance . . . . . . . . 0.2% or 1, whichever is greater Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear Peak Noise (C.R.V.) . . . . . 0.5% or 2, whichever is greater Power Rating . . . . . . . . 0.5 watt at 70 C, 0 watt at 125 C Temperature Coefficient . . . . . . . . . . . . . . . . . 50ppm / C
Environmental
Temperature Range . . . . . . . . . . . . . . . . . 55 C to 125 C Low Temperature Exposure . . . . . . . . . . . . 55 C, 1 hours T/R ) 1% 0.05 High Temperature Exposure . . . . . . . . . 125 C, 250 hours T/R ) 1% 0.05 Load Life . . . . . . . . . . . . . . . . . 70 C, 0.5 watt, 1,000 hours T/R ) 2%
Insulation Resistance . . . . . 1,000M minimum at 500VDC Dielectric Strength . . . . . . . . . . . . . . . . . 900VAC, 1 minute Adjustment Travel . . . . . . . . . . . . . . . . . . . . . . . . . 270 10
Thermal Shock . . . . . . . . . . . . . . . . . . . . . . 55 C, 125 C, 30 minutes each, 5 cycles T/R ) 1% 0.05 Humidity . . . . . . . . . . . . . . . . . . . . . . . . 40 C, 90-95%RH, 0.5 watt, 500 hours T/R ) 2%
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . 300 10 Shaft Torque . . . . . . . . 30 to 300 gf* cm (0.42 to 4.16 oz* in) Stop Strength . . . . . . . . . . . . . . 1 kgf* cm (13.86 oz*in) min. Flammability of Plastic Materials . . . . . . . Meets UL 94V-0 Nominal Weight . . . . . . . . . . . . . . . . . . . 1.5g (P); 2.4g (S, X ) Marking . . . . . . . . . . . . . . . . . . Resistance code, date code, model type, terminal identification
Soldering Heat Resistance . . . . . . . . . . . 350 C, 5 seconds T/R ) 1% 0.05 Seal Test . . . . . . . . . . . . . . . . . 85 C, hot water for 1 minute Rotational Life . . . . . . . . . . 200 cycles without discontinuity T/R ) 2%
T/R = Total Resistance Change; S.S. = Setting Stability ( voltage ratio )
TOCOSAMERICA, INC.
1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 E-mail: sales@tocos.com www.tocos.com
101
RA12 Series
RA12P
P Terminal Style, Single-Slot, Top Adjust
SLOT: 0.8 W 5.0 L 1.6 D
Dimensions
Unit: mm
O0.7
(3)
501
#2
O12.5
1.0
#3
#1 2.5
0.1
O 5.0
6.0
1.0
10.0
1.0
5.0
0.2
RA12S
S Terminal Style, Single-Slot, Side Adjust
RA12X
X Terminal Style, Single-Slot, Side Adjust
O12.5
1.0
O12.5
1.0
O5.0
8.5
1.0
O5.0
8.5
1.0
SLOT: 0.8 W 5.0 L 1.6 D
501
14.75
0.5
SLOT: 0.8 W 5.0 L 1.6 D
501
14.75
0.5
8.5
0.5
8.5
0.5
0.3
0.3
O 0.7
(3)
5.0
1.0
O 0.7
(3)
5.0
1.0
O 2.0
(4)
O 2.0
(4)
#1 #2
#3 2.5
0.2
#2 #1 #3 2.5
0.2
5.0
0.2
1.7
5.0
0.2
1.7
Recommended PCB Layouts
P & S Pin-Out
#2 #1
O1.2
X Pin-Out
5.0 #3 2.5 #1 #3 2.5
Unit: mm
max. (3 holes)
5.0
O1.2
max. (3 holes)
#2
Electrical Schematic
clockwise ccw #1
#3 cw
#2
wiper
102
1177 East Tower Road, Schaumburg, IL 60173
TOCOSAMERICA, INC.
Tel: 847-884-6664 Fax: 847-884-6665 E-mail: sales@tocos.com www.tocos.com
RA12 Series
RA12 P B 102 K
Part Numbering System
Resistance Tolerance: K = 10% 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 = 10; 101 = 100; 102 = 1,000; 105 = 1,000,000 ). Resistance Taper: B = Linear. Terminal Style: P = 3-Lead Configuration, Top Adjust. S, X = 3-Lead Configurations, Side Adjust. TOCOS Series Name.
Part Numbers
Nominal Resistance Value ( ) Code Catalog No. Bulk Resolution Ohms ( ) Percent ( % ) Potentiometer Styles
RA12P Through-Hole, P Terminal Style, Single-Slot, Top Adjust
10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 100 200 500 101 201 501 102 202 502 103 203 RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P RA12P B B B B B B B B B B B 100 200 500 101 201 501 102 202 502 103 203 K K K K K K K K K K K 0.11 0.18 0.34 0.51 0.81 2.20 3.90 6.04 10.4 18.9 27.6 1.13 0.90 0.69 0.51 0.41 0.44 0.39 0.30 0.20 0.19 0.14
RA12P
RA12S Through-Hole, S Terminal Style, Single-Slot, Side Adjust
10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 100 200 500 101 201 501 102 202 502 103 203 RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S RA12S B B B B B B B B B B B 100 200 500 101 201 501 102 202 502 103 203 K K K K K K K K K K K 0.11 0.18 0.34 0.51 0.81 2.20 3.90 6.04 10.4 18.9 27.6 1.13 0.90 0.69 0.51 0.41 0.44 0.39 0.30 0.20 0.19 0.14
RA12S
RA12X Through-Hole, X Terminal Style, Single-Slot, Side Adjust
10 20 50 100 200 500 1,000 2,000 5,000 10,000 20,000 100 200 500 101 201 501 102 202 502 103 203 RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X RA12X B B B B B B B B B B B 100 200 500 101 201 501 102 202 502 103 203 K K K K K K K K K K K 0.11 0.18 0.34 0.51 0.81 2.20 3.90 6.04 10.4 18.9 27.6 1.13 0.90 0.69 0.51 0.41 0.44 0.39 0.30 0.20 0.19 0.14
RA12X
Packaging
Standard: Bulk Packaging Quantity
10 pieces per vinyl bag; 100 pieces per box.
Soldering and Cleaning Guidelines
For soldering, cleaning and other information, refer to Guidelines and Precautions for Using Potentiometers.
TOCOSAMERICA, INC.
1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 E-mail: sales@tocos.com www.tocos.com
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