NTE Electronics 249 Series Catalog Page
Features
• Phosphor bronze, solder plated terminals
• Available in 1/8” and 1/4” shaft diameter
• 1/4” plastic shaft types
• Plastic flame retardant housing
• Available in audio taper (J types)
Spectrol 249 Series
Potentiometer − 1 Watt, 1/2” square
1/8” and 1/4” dia. shaft
Spectrol No. NTE Part No.
249−7−10−501 502−0164 500 7/8” P10
249−8−08−501 502−0064 500 3/4” P9
249−7−10−102 502−0165 1K 7/8” P10
249−8−08−102 502−0065 1K 3/4” P9
249−J−8−08−102 502−0180 1K 3/4” P9
249−J−9−10−102 502−0185 1K 7/8” P10
249−7−10−252 502−0166 2.5K 7/8” P10
249−8−08−252 502−0066 2.5K 3/4” P9
249−7−10−502 502−0167 5K 7/8” P10
249−8−08−502 502−0067 5K 3/4” P9
249−7−10−103 502−0168 10K 7/8” P10
249−8−08−103 502−0068 10K 3/4” P9
249−J−8−08−103 502−0181 10K 3/4” P9
249−J−9−10−103 502−0186 10K 7/8” P10
249−7−10−253 502−0169 25K 7/8” P10
249−8−08−253 502−0069 25K 3/4” P9
249−7−10−503 502−0170 50K 7/8” P10
249−8−08−503 502−0070 50K 3/4” P9
249−J−8−08−503 502−0182 50K 3/4” P9
249−J−9−10−503 502−0187 50K 7/8” P10
249−7−10−104 502−0171 100K 7/8” P10
249−8−08−104 502−0071 100K 3/4” P9
249−J−8−08−104 502−0183 100K 3/4” P9
249−J−9−10−104 502−0188 100K 7/8” P10
249−7−10−254 502−0172 250K 7/8” P10
249−8−08−254 502−0072 250K 3/4” P9
249−7−10−504 502−0173 500K 7/8” P10
249−8−08−504 502−0073 500K 3/4” P9
Value
(Ohms)
Shaft
Length
NOTE: 249−7−XX−XXX are plastic shaft types
Diag
No.
P9
P10
(0.36)
(0.36)
1
.300
(7.6)
.300
(7.6)
Clockwise
L .500 (12.7)
.375
(9.52)
1/4−32 NEF−2A
.200 (5.08) .025 (0.63) .100 (2.54)
L .500 (12.7)
.375
(9.52)
3/8−32 NEF−2A
.200 (5.08) .025 (0.63) .100 (2.54)
Wiper
2
3
.125
(3.17)
Dia
.250
(6.34)
.250
(6.35)
Dia
.250
(6.34)
123
123
L = Shaft Length (See Table)
Specifications
Electrical
Resistance Range − Linear Taper: 500Ω to 500kΩ
Resistance Tolerance: ±10%
Power Rating: 1 Watt @ 70°C derated to 0 Watts @ 125°C
Temperature Coefficient of Resistance: ±100ppm/°C
Linearity Tolerance: ±5% independent
Contact Resistance Variation: 3% of total resistance
Insulation Resistance: 1000 Meg Ω min, 500VDC
Dielectric Strength: 750V RMS min 50Hz
End Resistance: 2Ω max each end
Effective Electrical Angle: 265° ±5°
Rotation Life: 25,000 cycles
Mechanical
Resistance Element: Cermet
Mechanical Rotation: 295° ±5°
Starting and Running Torque: 1.5 to 18.75mNm
End Stop Torque: 0.35Nm (50oz in)
Environmental
Operating Temperature: −55°C to +125°C
Load Life: 1000 hr.
− CW Audio Taper: J types
(0.41).014
(0.41).014
.016
.016
.500
(12.7)
.500
(12.7)
NTE Electronics, Inc. D Voice (973) 748−5089 D FAX (973) 748−6224 D http://www.nteinc.com
25
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