CMA0204(2010) Ver la hoja de datos (PDF) - Vishay Semiconductors
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CMA0204 Datasheet PDF : 10 Pages
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CMA 0204
Vishay Beyschlag
High Pulse Load MELF Resistors
CMA 0204 specialty MELF resistors with advanced pulse
load capability are the perfect choice for the protection of
circuitry with signal or mains input lines from surge pulses.
The resistors are also suitable for circuits exposed to high
levels of electromagnetic interference or electrostatic
discharge. The applications are in all fields of automotive,
telecommunication, industrial and medical equipment.
FEATURES
• Special carbon film technology
• Up to 4 kV single pulse capability
• Up to 70 W continuous pulse load
• ESD capability: 6 kV, human body model
• Compatible with lead (Pb)-free and lead
containing soldering processes
• Compliant to RoHS directive 2002/95/EC
APPLICATIONS
• Automotive
• Telecommunication
• Industrial
• Medical equipment
METRIC SIZES
DIN
CECC
0204
RC 3715M
TECHNICAL SPECIFICATIONS
DESCRIPTION
CMA 0204
Metric CECC size
RC 3715M
Resistance range
10 Ω to 100 kΩ
Resistance tolerance
±2%
Temperature coefficient
See TCR graph
Operation mode
Standard
Power
Climatic category (LCT/UCT/days)
Rated dissipation, P70 (1)
Operating voltage, Umax. AC/DC
Film temperature (2)
Max. resistance change at P70 for resistance range, ΔR/R after:
1000 h
55/125/56
0.25 W
125 °C
≤1%
200 V
10 Ω to 100 kΩ
55/155/56
0.4 W
155 °C
≤2%
8000 h
≤2%
≤4%
Permissible voltage against ambient (insulation):
1 min; Uins
Continuous
300 V
75 V
Failure rate: FITobserved
≤ 0.1 x 10-9/h
Notes
• 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.
(1) The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heatflow support of the
printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature is not exceeded. Furthermore, a
high level of ambient temperature or of power dissipation may raise the temperature of the solder joint, hence special solder alloys or board
materials may be required to maintain the reliability of the assembly.
(2) Film temperatures above the specified range may be permissible, e.g. 175 °C. Please contact the factory for details.
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
www.vishay.com
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For technical questions, contact: melf@vishay.com
Document Number: 28717
Revision: 01-Mar-10
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