20

*R
oH
V SC
AV ER OM
AI SIO PL
LA N IA
BL S NT
E
Features
Model 20 is obsolete and not
recommended for new designs.
■ Multiturn / Cermet / Sealed
■ Machine insertable SIP design provides
extra cost savings
■ .080 inch width allows side-by-side
spacing on standard 0.100 inch grid
■ PC board profile - only 0.185 inches high
20 - 20 mm Rectangular Trimpot® Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
......................... 10 ohms to 2 megohms
(see standard resistance table)
Resistance Tolerance .............. ±10 % std.
Absolute Minimum Resistance
............................5.0 % or 3 ohms max.
(whichever is greater)
Contact Resistance Variation
..............................1.0 % or 1 ohm max.
(whichever is greater)
Adjustability
Voltage.......................................±0.01 %
Resistance.................................±0.05 %
Resolution ........................................Infinite
Insulation Resistance .................. 500 vdc.
100 megohms min.
Dielectric Strength
Sea Level..................................1000 vac
70,000 Feet ................................350 vac
Effective Travel.....................15 turns nom.
Product Dimensions
Standard Resistance Table
ADJ. SLOT FLUSH WITH HOUSING
Resistance
(Ohms)
10
20
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
20.00
(.785)
1
2
3
.51 ± .05
(.020 ± .002)
DIA. 3 PLCS.
1.07
(.042)
2.54
(.100)
17.78
(.700)
E
T
E
L
O
S
B
O
Environmental Characteristics
Power Rating (250 volts max.)
70 °C........................................ 0.25 watt
150 °C ...........................................0 watt
Temperature Range ...... -55 °C to +125 °C
Temperature Coefficient
50 Ohms and Above........ ±100 ppm/°C
Below 50 Ohms ............... ±150 ppm/°C
Seal Test..........................85 °C Fluorinert†
Humidity.......... MIL-STD-202 Method 103
96 hours
(3 % ΔTR, 20 megohms IR)
Vibration ...........20 G (1 % ΔTR; 1 % ΔVR)
Shock ...............50 G (1 % ΔTR; 1 % ΔVR)
Load Life
............. 1,000 hours, 0.25 watt @ 70 °C
(3 % ΔTR, 3 % or 3 ohms
whichever is greater, CRV)
Rotational Life ........................... 200 cycles
(3 % ΔTR, 3 % or 3 ohms
whichever is greater, CRV)
ADJ. SLOT
.51
.64
1.63
DIA. X
WIDE X
DEEP
(.020)
(.025)
(.064)
2.03
(.080)
4.70
(.185)
3.68
(.145)
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
How To Order
.51
(.020)
20 P - 1 - 103 LF
Model
Style
3.56 ± .38
(.140 ± .015)
Standard or Modified
Product Indicator
-1 = Standard Product
*BOURNS ADJUSTMENT TOOL H-91
AVAILABLE FOR THIS MODEL.
DIMENSIONS:
TOLERANCES:
MM
(INCHES)
0.25
(.010)
EXCEPT WHERE NOTED
REV. 07/10
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
“Trimpot” is a registered trademark of Bourns, Inc.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
WIPER
3
1
Physical Characteristics
Torque ................................ 5.0 oz-in. max.
Mechanical Angle .................... Wiper idles
Terminals ........................... Solderable pins
Weight ..........................................0.015 oz.
Marking .............................. Manufacturer’s
trademark, resistance code,
terminal numbers, date code,
manufacturer’s model number
and style
Standard Packaging ........25 pcs. per tube
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
Consult factory for other available options.
2
CCW
Resistance Code
CLOCKWISE
CW
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