NTE Electronics 74W Series Catalog Page

Features

• Multifinger wiper for better contact resistance

• Fully sealed housing for immersion cleaning

• Small compact size

Spectrol 74W Series

Trimmer − 1/4” square, multiturn
cermet

T11

Spectrol No. NTE Part No.

74W−100 500−0280 10 Top T11

74W−200 500−0281 20 Top T11

74W−500 500−0282 50 Top T11

74W−101 500−0283 100 Top T11

74W−201 500−0284 200 Top T11

74W−501 500−0285 500 Top T11

74W−102 500−0286 1K Top T11

74W−202 500−0287 2K Top T11

74W−502 500−0288 5K Top T11

74W−103 500−0289 10K Top T11

74W−203 500−0290 20K Top T11

74W−503 500−0291 50K Top T11

74W−104 500−0292 100K Top T11

74W−204 500−0293 200K Top T11

74W−504 500−0294 500K Top T11

74W−105 500−0295 1M Top T11

Value

(Ohms)

Adjust Diag No.

Shaft:.070 (1.78) Dia
Slot: .023 (0.58) x

.030 (0.76)

.043
(1.1)

2

1

Clockwise

Wiper

.039
(1.0)

.250

(6.35)

.197 (5.0)

.100 (2.54)

.039
(1.0)

.100

(2.54)

.250 (6.35)

.047
(1.2)

123

.100 (2.54)

.118 (3.0) Dia

.170

(4.32)

Specifications

Electrical

Effective Travel: 12 turns nom
Resistance Range: 10Ω to 1 Meg Ω
Resistance Tolerance: ±10%
End Resistance: 2Ω max
Temperature Coefficient of Resistance: ±100 ppm/°C
Power Rating: 1/4 Watt @ 85°C derated to 0 Watts @ 125°C
Dielectric Withstanding Voltage: 600V AC
Insulation Resistance: 1000 Meg Ω min
Contact Resistance Variation: 3% or 3Ω, whichever is greater

Mechanical

Stop: Contact idles at stop
Operating Torque: 21.6mNm max
Resistance Element: Cermet
2−Terminal Adjustability: 0.05% of RT
3−Terminal Adjustability: 0.01% of applied voltage

Environmental

Operating Temperature: −55°C to +125°C
Electrical Endurance: 1000 hour
Mechanical Life: 200 cycles

3

20

NTE Electronics, Inc. D Voice (973) 748−5089 D FAX (973) 748−6224 D http://www.nteinc.com