Spectrol 249 Series

Spectrol
Features
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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)
249 Series
Potentiometer − 1 Watt, 1/2” square
1/8” and 1/4” dia. shaft
P9
.300
(7.6)
L
.500 (12.7)
.125
(3.17)
Dia
.375
(9.52)
.500
(12.7)
1/4−32 NEF−2A
.250
(6.34)
1
2
3
.016
(0.41)
.014
(0.36)
.200 (5.08)
NTE Part No.
Value
(Ohms)
Shaft
Length
Diag
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
Clockwise
249−8−08−503
502−0070
50K
3/4”
P9
249−J−8−08−503
502−0182
50K
3/4”
P9
Specifications
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
Spectrol No.
NOTE: 249−7−XX−XXX are plastic shaft types
P10
.300
(7.6)
.025 (0.63)
L
.100 (2.54)
.500 (12.7)
.250
(6.35)
Dia
.375
(9.52)
.500
(12.7)
3/8−32 NEF−2A
.250
(6.34)
1
.200 (5.08)
Wiper
1
3
.016
(0.41)
.014
(0.36)
2
2
.025 (0.63)
.100 (2.54)
3
L = Shaft Length (See Table)
Electrical
Resistance Range − Linear Taper: 500Ω to 500kΩ
− CW Audio Taper: J types
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.
NTE Electronics, Inc. D Voice (973) 748−5089 D FAX (973) 748−6224 D http://www.nteinc.com
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