Sealed cermet trimming potentiometer TT Electronics 67WR10KLFTB for precise calibration applications

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Product Description

Product Overview

The Model 67 Cermet Trimming Potentiometer by TT electronics is a highly reliable, long-life, 3/8" square multiturn potentiometer designed for applications requiring adjustability or calibration. It is sealed for compatibility with aqueous PCB cleaning processes and offers essentially infinite resolution.

Product Attributes

Brand: TT electronics
Model: 67 Cermet Trimming Potentiometer
Origin: Mexicali, B.C. Mexico
Material: Cermet
Features: Sealed for aqueous PCB cleaning, Highly reliable, Long life

Technical Specifications

Specification	Value
Standard Resistance Range	10 Ohms to 2 Megohms
Standard Resistance Tolerance	±10% (<100 Ohms = ±20%)
Input Voltage	200 Vdc max. or rms not to exceed power rating
Slider Current	100 mA max. or within rated power, whichever is less
Power Rating	0.5 Watts at 85°C derating to 0 at 125°C
End Resistance	2 Ohms max
Actual Electrical Travel	20 turns nominal
Dielectric Strength	900 Vrms
Insulation Resistance	1,000 Megohms minimum
Resolution	Essentially infinite
Contact Resistance Variation	1% or 1 Ohm max., whichever is greater
Seal	85°C Fluorinert® (No Leaks)
Temperature Coefficient	±100 ppm/°C (<100 Ohms = ±250 ppm/°C)
Operating Temperature Range	-55°C to +125°C
Thermal Shock	Five cycles –55°C to +125°C (1% ΔRT, 1% ΔVR)
Moisture Resistance	Ten 24 hour cycles (1% ΔRT, IR 1,000 Megohms min.)
Shock	6 ms saw-tooth, 100 G’s (1% ΔRT, 1% ΔVR)
Vibration	20 G’s, 10 to 2,000 Hz (1% ΔRT, 1% ΔVR)
High Temperature Exposure	250 hours at 125°C (2% ΔRT, 2% ΔVR)
Rotational Life	200 cycles (3% ΔRT)
Load Life	1,000 hours at 70°C & 0.5 Watts (2% ΔRT)
Resistance to Solder Heat	260°C for 10 sec. (1% ΔRT)
Mechanical Stops	Clutch action, both ends
Torque, starting	5 oz.-in. max. (0.035 N-m)
Weight	0.04 oz. nominal (1.1 grams)