MCR25 Datasheet, PDF (1/6 Pages) Motorola, Inc – Silicon Controlled Rectifiers

Resistors
Thick film rectangular
MCR25 (3225 size: 1 / 4W)
MCR25
zFeatures
1) Made of same material as the general purpose chip resistors (MCR10 / 18).
2) Highly reliable chip resistor
Ruthenium oxide resistive material offers superior resistance to the elements.
3) Electrodes not corroded by soldering
Suitable for re-flow soldering.
4) ROHM resistors have approved ISO-9001 certification.
Design and specifications are subject to change without notice. Carefully check the specification sheet before using or
ordering it.
zRatings
Item
Rated power
Conditions
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°C.
100
80
60
40
20
0
-55
0
70 100 125
AMBIENT TEMPERATURE (˚C)
Fig.1
Rated voltage
The voltage rating is calculated by the following equation. If the value
obtained exceeds the limiting element voltage, the voltage rating is
equal to the maximum operating voltage.
E= P×R
E: Rated voltage (V)
P: Rated power (W)
R: Nominal resistance (Ω)
Nominal resistance See Table 1.
Operating temperature
Specifications
0.25W (1 / 4W)
at 70°C
Limiting element voltage
−55°C to +125°C
200V
Jumper type
Resistance
Rated current
Operating temperature
Max. 50mΩ
2A
−55°C to +125°C
Table 1
Resistance tolerance
F (±1%)
J (±5%)
Resistance range
(Ω)
10≤ R ≤ 1M (E24,96)
1.0 ≤ R < 2.2 (E24)
2.2 ≤ R < 5.6 (E24)
5.6 ≤ R ≤ 3.3M (E24)
Resistance temperature coefficient
(ppm/°C)
±100
500±350
±500
±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.
Rev.A
1/5