MCR25

Resistors

Rev.D

1/4

Low Ohmic Thick Film Chip Resistors

MCR25 (3225 size (1210 size) : 1 / 2W)

Features

1) Highly reliable chip resistor

Ruthenium oxide resistive material offers superior resistance to the elements.

2) Electrodes not corroded by soldering

Suitable for re-flow soldering.

3) ROHM resistors have approved ISO9001- / ISO/TS 16949- certification.

Ratings

Design and specifications are subject to change without notice. Carefully check the specification sheet before using or

ordering it.

0.5W (1 / 2W)

E =

P

× R

−55°C to +125°C

at 70

°C

Item

Conditions

Specifications

Rated power

Rated voltage

Operating temperature

Nominal resistance

See Table 1.

The voltage rating is calculated by the following equation.

Power must be derated according to the power derating curve in

Figure 1 when ambient temperature exceeds 70

°C.

E: Rated voltage (V)

P: Rated power (W)

R: Nominal resistance (

Ω)

0

20

40

60

80

100

-55

0

70

100

125

AMBIENT TEMPERATURE (˚C)

Fig.1

Table 1

Resistance tolerance Special code

L

S

L

S

Resistance range

(

Ω)

Resistance temperature coefficient

(ppm / ˚C)

F (

±1%)

J (

±5%)

0.047 to 0.091 (E24)

(E24)

0.1 to 9.1

(E24)

±200

0.047 to 0.091 (E24)

300

±300

300

±300

0.1 to 0.91

±200

•Before using components in circuits where they will be exposed to transients such as pulse loads (short-duration, high-level loads), be certain to evaluate the

component in the mounted state. In addition, the reliability and performance of this component cannot be guaranteed if it is used with a steady state voltage that

is greater than its rated voltage.