Professional Trimmers
Type 4290 Series
Literature No. 1773169
Issued: 04-06
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
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Key Features
■High Stability Cermet
Element
■0.5 Watt Rating at 70°C
■Slim Profile Assists Stacking
■Top & Side Adjustment
Styles Available
■Flame Retardant Case
Type 4290 Series
Where size and reliability are critical,
this range of 10mm square multiturn
trimming potentiometers satisfies the
requirements in industrial and
professional applications.
The cermet resistance element offers
stability and high resolution. The trim-
mer is actuated by a lead screw with a
slipping clutch at each end of travel.
Top or side adjustment components
are available and pin configurations
meet the majority of requirements. All
units are fully sealed to withstand
immersion in board washing solvents.
Characteristics -
Electrical
Characteristics -
Mechanical
End Stop: Slipping clutch both ends
Starting Torque: 35 mNm
Weight: 0.8 gram, approx.
Resistance Range: 10R to 2M
Resistance Values: 1, 2 and 5 in each decade
Resistance Tolerance: ± 10%
End Resistance: 2 ohms or 1% whichever is greater
Slider Current: 100 mA DC or AC, maximum
Power Rating: 0.5 Watts at 70°C derating to zero at 125°C
Isolation Voltage: 430 V DC or AC peak
Limiting Element Voltage: 300 V DC or AC RMS, maximum
Breakdown Voltage: 900 V AC for one minute
Insulation Resistance: 1000 M at 500 V DC, minimum
Resolution: Essentially Infinite
Rotational Noise (CRV): 3 Ohms or 1 %, whichever is greater
Temperature Coefficient: ± 250 ppm/°C, maximum
Electrical Adjustment: 25 turns
Characteristics -
Environmental
Temperature Range: -55°C to +125°C
Temperature Storage: 1000 Hrs at 125°C
Thermal Shock: 5 Cycles -55°C to +125°C
Bump Severity: 4000 Bumps; 40 G (3mm or 390m/s2)
Vibration Severity: 10 - 500Hz; 20 G
Rotational Life: 200 Cycles
Load Life at 85°C: ∆R <3% after 1000 hours
Sealing: Sealed for board washing
Climatic Category: 55/125/21
How to Order
4290 W 502 K
Common Part
W - Top Adjust
X - Side Adjust
Y - Top Adjust
Pin Configuration
The first two digits are
significant figures of
resistance value and the
third denotes the number
of zeros following.
e.g. 1K: 102
10K: 103
100K: 104
Resistance Value Tolerance
4290 K - ±10 %
10.0
Dimensions
