MCW 0406 AT, MCW 0612 AT - Professional
www.vishay.com
Vishay Beyschlag
Professional Wide Terminal Thin Film Chip Resistors
FEATURES
Rated dissipation P up to 1 W
85
Superior temperature cycling robustness
Operating temperature up to 175 C for 1000 h
AEC-Q200 qualified
Advanced sulfur resistance verified according to
ASTM B 809
Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
MCW AT Professional Wide Terminal Resistors are the
perfect choice for most fields of modern professional power
APPLICATIONS
measurement electronics where reliability, stability, power
dissipation, and robust design is of major concern. Automotive
Besides extremely high power ratings, the MCW AT is Industrial
characterized by extraordinary temperature cycling
High power and high temperature applications
robustness, verified through extensive testing. Typical
Replacement for larger case sizes
applications include power electronics in automotive and
industrial appliances.
TECHNICAL SPECIFICATIONS
DESCRIPTION MCW 0406 AT MCW 0612 AT
Imperial size 0406 0612
Metric size code RR1016M RR1632M
Resistance range 1 to 100 k 10 to 100 k
Resistance tolerance 0.5 %; 1 % 0.5 %; 1 %
Temperature coefficient 25 ppm/K; 50 ppm/K 25 ppm/K; 50 ppm/K
(1)
Rated dissipation P 0.3 W 1.0 W
85
Operating voltage, U AC /DC 50 V 75 V
max. RMS
(1)
Permissible film temperature, 175 C 175 C
F max.
(1)
Operating temperature range -55 C to 175 C -55 C to 175 C
Permissible voltage against ambient (insulation):
1 min; U 75 V 100 V
ins
Note
(1)
Please refer to APPLICATION INFORMATION, see below.
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.
Revision: 05-Dec-16 Document Number: 28796
1
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
MCW 0406 AT, MCW 0612 AT - Professional
www.vishay.com
Vishay Beyschlag
MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
OPERATION MODE STANDARD POWER ADVANCED TEMPERATURE
P P P
70 70 85
Rated dissipation MCW 0406 AT 0.2 W 0.25 W 0.3 W
(1)
MCW 0612 AT 0.5 W 0.75 W 1.0 W
Operating temperature range -55 C to 125 C -55 C to 155 C -55 C to 175 C
Permissible film temperature, 125 C 155 C 175 C
F max.
MCW 0406 AT 1 to 100 k 1 to 100 k 1 to 100 k
Max. resistance change
MCW 0612 AT 10 to 100 k 10 to 100 k 10 to 100 k
at rated dissipation for
1000 h 0.1 % 0.2 % 0.4 %
resistance range,
8000 h 0.2 % 0.4 % -
R/R, after:
225 000 h 0.6 % - -
Notes
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.
(1)
Specified power rating requires a thermal resistance R 90 K/W of the circuit board assembly.
th
The resistance value is influenced by the resistance of the terminations. The exact resistance value of the soldered part on the
PCB may deviate depending on e.g. solder quantity, pad layout, and soldering method. The resistance value of the unmounted
part can be verified for resistors < 10 by a 4-point probe on the top side terminations as shown below.
Y
X
Fig. 1
DIMENSIONS FOR 4-POINT PROBE
X Y
TYPE / SIZE
(m) (m)
MCW 0406 AT 870 600
MCW 0612 AT 1300 1240
Revision: 05-Dec-16 Document Number: 28796
2
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