RCMT

www.vishay.com

Vishay Sfernice

Revision: 12-Sep-14

3

Document Number: 52011

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ENVIRONMENTAL SPECIFICATIONS

Insulation Resistance



Voltage Coefficient

10 ppm/V

Environmental Specifications - 65 °C/+ 175 °C/56 days

PRACTICAL OPERATING TOLERANCES

After the 10 000 h load life test, at nominal power rating,

90'/30' cycles, + 125 °C ambient temperature, the total

actual drifts measured at + 125 °C are the following:

POWER RATING

TEMPERATURE RISE

NOISE LEVEL

In a frequency decade, the average noise level is 0.1 μV/V

for models RCMT08, RCMT1, RCMT2, and RCMT4 in all

ohmic values. It progressively increases as a function of the

ohmic value and can reach 0.2 μV/V for the highest values of

models RCMT02 and RCMT05 (0.1 μV/V for R < 10 k

).

SPECIAL APPLICATIONS

Temperature coefficient tracking to 5 ppm.

Tolerance matching to 0.05 %.

Selection of positive or negative TCR in temperature range

of - 20 °C to + 125 °C.

For these applications and other requirements consult

Vishay Sfernice.

RECOMMENDATION

The lower the ohmic value, the more important the influence

of lead resistance is on measurements. The nominal

resistance value is therefore measured at a distance of

5 mm from resistor body.

MARKING

Printed: Series, style, NF style if applicable, ohmic value

(in

), tolerance (in %), temperature coefficient,

manufacturing date. Due to lack of space, RCMT02 is

referenced as MT02.





TEMPERATURE COEFFICIENT

TCR CODE

TEMPERATURE RANGE

NOMINAL TEMPERATURE

COEFFICIENT

TEMPERATURE RANGE

TYPICAL TEMPERATURE

COEFFICIENT

K5

0 °C to + 155 °C

± 15 ppm/°C

0 °C to + 70 °C

± 10 ppm/°C

K4

- 55 °C to + 175 °C

± 25 ppm/°C

- 10 °C to + 70 °C

± 15 ppm/°C

K3

- 55 °C to + 175 °C

± 50 ppm/°C

- 10 °C to + 70 °C

± 30 ppm/°C

Manufacturing tolerance

± 0.1 %

± 1 %

Drift due to TCR (K4) + life drift

± 0.25 %

± 0.35 %

Max. total deviation from nominal



ohmic value, including the



manufacturing tolerance

± 0.35 %

± 1.35 %

AMBIENT TEMPERATURE IN °C

100

50

0

0

25

50

70

100

125

150

175

40

50

30

20

10

0

0

1.0

0.5

1.5

2.0

RATED POWER IN W

RCMT2

RCMT4