Part Numbering System
RA20 Series
RA 20 Y L 10 S B 203 K
NOTE: FMS = From Mounting Surface
ꢀ
Resistance Tolerance: K = 10% (standard).
ꢀ
J = 5% (special order).
ꢀ
G = 2% (special order).
ꢀ
F = 1% (special order).
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., 200 = 20Ω; 201 = 200Ω; 202 = 2,000Ω;
203 = 20,000Ω). See table for standard resistance values.
For Single Unit:
Specify taper and resistance code as shown.
For Ganged Tandem Unit:
Specify a taper code and resistance code for each unit starting with
the front unit followed by the rear unit. If both units have the same taper
and resistance codes, add “X2” suffix per example below.
Examples: B203A503 or if both units are the same: B203X2
Resistance Taper: B = Linear.
A = CW Audio (logarithm).
C = CCW Audio (logarithm).
Shaft End Style: S = Slotted.
F = Flatted.
R = Round.
Standard Shaft Length: 10 = 10mm FMS.
15 = 15mm FMS.
Up to 30mm shaft length available (special order).
Style: Blank = Panel Mount, Single Unit, Single Shaft, Right Angle
Ear-Lug Terminals.
= Panel Mount, Single Unit, Single Shaft with Shaft Lock,
Right Angle Ear-Lug Terminals.
L
P2 = PCB Mount, Single Unit, Single Shaft, Right Angle
Mount Pin Terminals, 3-Pin Inline Pattern, 2-Pin Rear
Support Bracket.
G
= Panel Mount, Ganged Tandem Unit, Single Shaft,
Right Angle Ear-Lug Terminals on Each Unit.
ꢁ
Operating Temperature Range: Y = ꢃ10ꢂC to 100ꢂC.
ꢁ
X = ꢃ30ꢂC to 100ꢂC.
Size: 20 = 20mm Diameter.
TOCOS Series Name: RA = Wirewound Element.
Standard Resistance Values and Part Numbering Codes
Standard Nominal Total Resistance Values and Part Numbering Codes
Resistance (Ω)
Code
Resistance (Ω)
Code
Resistance (Ω)
Code
Resistance (Ω)
Code
10
20
50
100
200
500
100
200
500
101
201
501
1,000
2,000
5,000
102
202
502
10,000
20,000
103
203
Refer to Shaft End Styles Specifications and Hardware Specifications for details and availability.
For additional information, refer to Guidelines and Precautions for Using Panel Controls.
TOCOSAMERICA,INC.
56
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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