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Type 288P

Vishay Sprague

Document Number: 42023

Revision 13-Nov-03

For technical questions, contact spresale@vishay.com

Humidity Test: Condition networks with no voltage applied for 72 hours

at 95% relative humidity and + 75°C. Remove networks from humidity

chamber, wipe surface dry of moisture and dry in circulating air for

4 hours. Measure insulation resistance at + 25°C and rated DC voltage.

The minimum insulation resistance shall be 5000 Megohm after test.

Not more than one failure in 18 units tested shall be permitted.

AC Operation: The maximum permissible AC voltage to which these

networks may be exposed is 250 volts rms. In no case should the sum

of the DC and peak AC voltage applied to a network exceed the rated

DC voltage.

PERFORMANCE CHARACTERISTICS

Operating Temperature: - 40°C to + 85°C.

Insulation Resistance: When measured at

+ 25°C, the insulation resistance shall exceed

10,000 Megohm. Measurements shall be

made after a 2 minute charge at rated DC

voltage.

Tolerance: Standard tolerance is ± 10% for

both the resistor and capacitor.

DIMENSIONS in inches [millimeters]

L

Max.

1.125 [28.575]

Min.

H

Max.

R

0.237

[6.020]

Max.

0.028 [0.711] Dia. (No. 21 AWG)

Tinned Copper Lead

on Resistor Side.

0.032 [0.813] Dia. (No. 20 AWG)

Tinned Copper-Clad Lead

on Opposite Side

S

T

Max.

Contact Arc Suppression reduces field maintenance, premature equipment

failure and RFI. A capacitor connected across the contacts helps in the

solution of these problems but can cause contact welding and reduced

equipment reliability. By adding a resistor in series with the capacitor, these

additional problems are eliminated.

Because of the increased use of R-C combinations for Arc Suppressors and

single low profile package.

The standard ratings shown have those combinations of resistance and

capacitance values most commonly required for low power applications.

The standard Type 288P R-C Arc Suppressors consist of a metalized

polyester film capacitor in series with a low value 1/2 watt composition resistor.

These units are supplied with radial leads for quick and easy installation.

The outer covering is a tough, conformal coating of epoxy resin for protection

against heat and moisture. The Arc Suppressors are quite similar in appearance

R-C Arc Suppressors