Capacitor Discharge Resistors

CDR Series

Overload Performance

Construction

CDR is a high voltage planar style resistor. Pd/Ag terminations are printed and fired onto the front face of a 96% alumina substrate. A resistor material is

printed with a high voltage design between the terminations and after firing gives an excellent high voltage performance. This is then laser adjusted to

target value before being coated in a glass material. Hot tin dipped copper wire terminations are then fitted using Sn/Ag/Cu solder. The product is 100%

measured for resistance value. It is cleaned of all flux residues and ionic contamination in order to ensure compatibility with capacitor dielectric fluid

applications.

Marking

Type and resistance value are legend marked on the front of the component.

Termination Lead Pull Strength

Each termination lead shall withstand a tensile load of 1kg at an angle of 90° to the plane of the resistor, with no mechanical failure admitted, such as

breaking of the resistor substrate or shearing of the termination lead wire or solder.

Solderability

The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2

CDR01

CDR02

CDR03

CDR04

CDR05

CDR06

Performance Data

Requirement

Typical

Load at rated power in air (1000 hours at 70°C)

ΔR%

≤1

<0.25

Load at rated power in fluid (1000 hours at 70°C)

ΔR%

≤1

<0.25

Derating from power at 70°C

Zero at 155°C

ΔR%

≤1

<0.25

Termination pull strength (applied at 90° to plane of body, no damage visible)

kg

≥1

>4

Overload in dielectric fluid (90s at 25°C, see Overload Ratings graph)

ΔR%

≤0.5

<0.1

Make Possible

07.14

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronicsresistors.com