MVR32

Resistors

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Characteristics

Characteristics

Test method (JIS C 5261)

Specifications

DC total resistance

Contact

resistance rate

Resistance to dry heat

Temperature cycling

Resistance to humidity

(steady state)

Wiper noise

5% or less of total nominal resistance,

within the effective rotational range

R

<1kΩ 200Ω or less

R

≥1kΩ Within 2% of total nominal resistance

Total resistance change rate :

± (5.0%+0.1Ω)

Constriction contact resistance rate: 8% or less

Total resistance change rate :

± (5.0%+0.1Ω)

Constriction contact resistance rate: 8% or less

Within

±25%

3% or less

Resistance change

characteristics

Resistance temperature

characteristics

B group OB

±250ppm / ˚C

JIS C 5261 5.8 B method

Rotational speed of approx. 10 cycles per minute

(with one cycle defined as one round trip)

• Measurement circuit

• Measurement waveform

Provided that the constant current has been set

according to the following:

Is : Is =

(When Rx

≤ 1kΩ,

constant current is defined as Is = 10mA)

Rx : Nominal resistance of semi-fixed test resistor.

Vn : Noise voltage

Noise rate =

JIS C 5261 7.2

125˚C Test time : 1,000

∼ 1,048 hrs.

JIS C 5261 7.3

Test temperature:

−55˚C ∼ + 125˚C 100cyc.

Total resistance change rate :

± (5.0%+0.1Ω)

Constriction contact resistance rate: 8% or less

JIS C 5261 7.4

60˚C , 95%RH

Test time: 1,000

∼ 1,048 hrs.

JIS C 5261 5.3

+25 /

−55 / +25 / +125˚C

JIS C 5261 5.1

Voltage method

Residual resistance

Vn

Rx

Is

Oscilloscope

Rx

10

Is

× Rx ×

100 (%)

Vn

Endurance

(under load in damp

environment)

Endurance

(steady state)

Endurance

(wiper)

Rotational torque

Total resistance change rate :

± (5.0%+0.1Ω)

Constriction contact resistance rate: 8% or less

Total resistance change rate :

± (5.0%+0.1Ω)

Constriction contact resistance rate : 8% or less

1.9

(20

Total resistance change rate : Within

±15%

Constriction contact resistance rate : 8% or less

JIS C 5261 7.6

Rated voltage (current) , 60˚C , 95%RH

1.5h : ON

−0.5h : OFF

Test time: 1,000

∼ 1,048 hrs.

JIS C 5261 7.7

Rated voltage (current) , 70˚C

1.5h : ON

−0.5h : OFF

Test time: 1,000

∼ 1,048 hrs.

JIS C 5261 6.2

JIS C 5261 7.8

After 20 rotations

JIS C 5261 5.1

JIS C 5261 5.9

JIS C 5261 5.1