Series 408 Sealed Conductive Plastic Modular Potentiometer

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Series 408 Modular Potentiometer
Conductive Plastic—1/2" square

Series 408 Modular Potentiometer Conductive Plastic - 1/2 in. sq., 0.5 Watt

Description

The Series 408 high-performance potentiometers are designed to meet wave soldering applications for mounting to PC boards. Available with up to three switch and potentiometer modules

Features:
•	Compact - 1/2 in. (12.7mm) miniature, totally sealed, modular size
•	Precision Made - screen-printed conductive plastic elements.
•	Cost-effective - Elimination of hand soldering.
•	Rugged - Horizontal or vertical mountings with support plates. Nickel-plated brass
•	Stability - -40°C to +120°C operating temperature.
•	Board Washable
•	RoHS Compliant
•	Series 409 Cermet version available

This series has been discontinued.
Limited Options - View available inventory

For additional information: PDF Datasheet

Electrical Specifications

Resistance	Linear: 100 ohms to 5 megohms Non-linear: 500 ohms to 2 Megohms
Resistance Range	Linear: ±10%; thru 500K ohms ±20% to 5 Megohms Non-linear: ±10% thru 100K ohms, ±20% above 100K ohms
End Resistance	Linear: 4 ohms maximum each end Taper: low side 4 ohms maximum; high side 1% of total R.
Power Rating	0.5 watt @ 70°C. Derate linearly to zero watts at 120°C Derate non-linear tapered units or PC mounted units by 50% Derate trimmer style by 50%
Dynamic Noise	Standard: Linear single controls maximum initial noise level of 1.5% of total resistance. Measurement made using constant current source and oscilloscope detection technique Special: 1% available
Electrical Rotation	295° ±5°
Effective Rotation	265° ±5°
Working Voltage	350 Vdc across end terminals, but power not to exceed rating
Linearity	±5% independent
Non-linear Tapers	Right or left-hand available. See data sheet
Taper Tolerance	±20% of nominal resistance @ 50% ±3% of mechanical rotation
Voltage Coefficient	.008%/Volt maximum
Dielectric Withstanding Voltage	750 Vac for 60 seconds @ ATM pressure 350 Vac for 6 seconds @ 3.4 in. Hg.

Mechanical Specifications

Mechanical Rotation	295° ±5°
Torque Range	Single module: 0.20 to 3.0 oz. in. Dual: 0.3 to 3.5 oz. in. Triple: 0.4 to 4.5 oz. in. Other torque options available.
Stop Torque	3 lb. in. minimum (metal shaft)
Torque Variation	Within control .5 oz. in. maximum
Bushing Lengths	.25 in. (6.35mm), .375 in. (9.53mm), .5 in. (12.7mm)
Shafts, Standard	.125 in. (3.18mm) diameter; brass, nickel-plated
Shaft Lengths	Lengths from mounting surface to 3 in. (76.2mm) in 1/64 in. (.397mm) increments
Push-Pull and Momentary Switch	Type BL: push-pull SPDT, 250ma, 30Vdc Type BLM: Momentary SPDT, 250ma, 30Vdc
Rotary Switch	Type AL: SPST or SPDT, CCW or CW, 125ma, 28Vdc
Seals	O-ring shaft seal standard all styles Complete unit is sealed for wave solder and wash processing Shaft seal withstands 3 PSI pressure Mounting seals are available.
Housing	Thermoplastic polyester, blue. (U.L. SE-O rating)
Hardware	Nut: brass, nickel-plated Lockwasher: phosphorous bronze, nickel-plated
Solvent Resistance	Housing resistant to trichlorethylene, Chlorethene NU, Freon TMS, Freon TMC, toluene, MEK, ethyl acetate and gasoline For solvents not listed, please consult Factory
Terminals	Gold-coated PC terminals or solder hook style PC pins fit .100 grid spacing Terminal mounting options available
Weight (approx.)	Metal shaft & bushing: Single module: .19 oz., Dual: .27 oz., Triple: .35 oz.

This series has been discontinued.
Limited Options - View available inventory

For additional information: PDF Datasheet