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Continuous operating voltage
V=√(P*R)
Measuring voltage
Standard measuring voltage is 10V (50V for values >1G).
Different voltages on request.
TCR
in ppm/K; Temperature range +25°C ... +125°C;
TCR25/50 and values above 1G: +25°C ... +85°C
Operating temp. range
-55°C ... +125°C
Climatic category
to EN 60068-1: 55/125/56
Humidity-/contact protection
Lacquer coating. Resistant to most solvents. Isopropyl
alcohol recommended for cleaning; do not use acetone
or methylene choloride. Avoid mechanical stress to coat-
ing.
Stability: Storage
(125°C/1000h) ≤10G: <1%; >10G: <2%
Stability at Max. voltage
(Max. voltage/1000h) ≤10G: <1%; >10G: <2%
Ultra-Mox Series
High Voltage, Thick Film
FEATURES
•Highvoltageresistorsinthickfilmtechnology
•Radialleads,variableleadspacingbybending
•Climaticprotectionbysiliconecoating
•Specialversionspossible
•Resistancevaluesupto10teraohm
•LowvaluesofTCRandVCR
SERIES SPECIFICATIONS
CHARACTERISTICS
Series Power Rating Working Voltage Resistance Range Tolerance TCR VCR
UM025 1.0 15KV 1M-100M 0.25-10% 25, 50, 100 1ppm/V
>100M-1G 1-20% 50, 100, 250 2ppm/V
>1G-100G 5-30% 250, 500 10ppm/V
>100G-1T 5-30% 500, 1000 50ppm/V
UM030 1.0 10KV 1M-100M 0.25-10% 25, 50, 100 2ppm/V
>100M-1G 1-20% 50, 100, 250 5ppm/V
>1G-100G 5-30% 250, 500 20ppm/V
>100G-1T 5-30% 500, 1000 100ppm/V
UM040 1.2 20KV 1M-100M 0.25-10% 25, 50, 100 1ppm/V
>100M-1G 1-20% 50, 100, 250 2ppm/V
>1G-100G 5-30% 250, 500 10ppm/V
>100G-1T 5-30% 500, 1000 50ppm/V
UM050 3.0 30KV 1M-100M 0.25-10% 25, 50, 100 1ppm/V
>100M-1G 1-20% 25, 50, 100 1ppm/V
>1G-100G 5-30% 100, 250 5ppm/V
>100G-1T 5-30% 250, 500 25ppm/V
>1T-10T 10-30% on request
Closer tolerance, TCR and VCR, other dimensions, and voltage dividers, on request.
