MCS 0402 AT, MCT 0603 AT, MCU 0805 AT, MCA 1206 AT - Precision
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Vishay Beyschlag
Revision: 21-Feb-17
2
Document Number: 28785
For technical questions, contact: thinfilmchip@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
APPLICATION INFORMATION
When the resistor dissipates power, a temperature rise above the ambient temperature occurs, dependent on the thermal
resistance of the assembled resistor together with the printed circuit board. The rated dissipation applies only if the permitted
film temperature is not exceeded.
These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift
increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a
functional lifetime.
Note
• The presented operation modes do not refer to different types of resistors, but actually show examples of different loads, that lead to
different film temperatures and different achievable load-life stability (drift) of the resistance value. A suitable low thermal resistance of the
circuit board assembly must be safeguarded in order to maintain the film temperature of the resistors within the specified limits. Please
consider the application note “Thermal Management in Surface-Mounted Resistor Applications” (www.vishay.com/doc?28844
) for
information on the general nature of thermal resistance.
MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
OPERATION MODE STANDARD POWER
Rated dissipation, P
70
MCS 0402 AT 0.063 W 0.100 W
MCT 0603 AT 0.100 W 0.125 W
MCU 0805 AT 0.125 W 0.200 W
MCA 1206 AT 0.250 W 0.400 W
Operating temperature range -55 °C to 125 °C -55 °C to 155 °C
Permissible film temperature,
F max.
125 °C 155 °C
Max. resistance change at P
70
for resistance range, |R/R| after:
MCS 0402 AT 47 to 221 k 47 to 221 k
MCT 0603 AT 47 to 511 k 47 to 511 k
MCU 0805 AT 47 to 1 M 47 to 1 M
MCA 1206 AT 47 to 1 M 47 to 1 M
1000 h 0.1 % 0.2 %
8000 h 0.2 % 0.4 %
225 000 h 0.6 % -
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE / SIZE TCR TOLERANCE RESISTANCE E-SERIES
MCS 0402 AT
± 25 ppm/K
± 0.1 %
47 to 221 k
E24; E192± 15 ppm/K 47 to 100 k
± 10 ppm/K 47 to 10 k
MCT 0603 AT
± 25 ppm/K
± 0.1 %
47 to 511 k
E24; E192± 15 ppm/K 47 to 221 k
± 10 ppm/K 47 to 22.1 k
MCU 0805 AT
± 25 ppm/K
± 0.1 %
47 to 1 M
E24; E192± 15 ppm/K 47 to 332 k
± 10 ppm/K 47 to 33.2 k
MCA 1206 AT
± 25 ppm/K
± 0.1 %
47 to 1 M
E24; E192± 15 ppm/K 47 to 511 k
± 10 ppm/K 47 to 43.2 k
