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Document Number: 20004
30 Revision: 16-Sep-11
SMM0204
Vishay Draloric
Thin Film Mini-MELF Resistors
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
FEATURES
Advanced thin film technology
AEC-Q200 qualified
Low TCR and tight tolerances
Excellent stability in different environmental
conditions
Pure tin termination on nickel barrier, plated on
press fit steel caps
Compliant to RoHS Directive 2002/95/EC
Notes
• SMM0204 EN803 E0 and OMM0204 EN803 E0 respectively are available versions with IECQ-CECC approval to EN 140401-803, version A,
with nominal failure rate level E0.
• The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow support of the
printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature of 155 °C is not exceeded.
Notes
• The upper temperature limit of 125 °C reflects the prescriptions of the detail specification EN 140401-803. However, the products may be
operated up 155 °C, if the tradeoff through decreased drift stability is acceptable to the specific application.
• The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow support of the
printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature of 125 °C or 155 °C respectively
is not exceeded.
• The specification of this product is based on a test board according to EN 140400, providing a thermal resistance of approximately 220 K/W.
• 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.
• The IECQ-CECC approved product versions SMM0204 EN803 E0 and OMM0204 EN803 E0 respectively feature a quality factor
Q
= 3 for
the purpose of system MTBF calculations, compared with
Q
= 10 for the standard versions.
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
POWER RATING
P
70
W
LIMITING ELEMENT
VOLTAGE
DC or AC
RMS
V
TEMPERATURE
COEFFICIENT
ppm/K
TOLERANCE
%
RESISTANCE
RANGE
E-SERIES
SMM0204 0.25 200 ± 15
± 0.1
± 0.25
± 0.5
43R to 221K
22R to 221K
10R to 221K
24; 96; 192
SMM0204 0.25 200 ± 25
± 0.1
± 0.25
±0.5
43R to 511K
22R to 511K
10R to 1M0
24; 96; 192
SMM0204 0.25 200 ± 50
± 0.5
± 1
10R to 1M0
R82 to 10M
24; 96; 192
24; 96
SMM0204 0.25 200 ± 100 ± 5 R22 to 10M 24
Zero-Ohm-Resistor: OMM0204 R
max.
= 10 m I
max.
= 3 A
TECHNICAL SPECIFICATIONS
PARAMETER UNIT SMM0204
Power rating P
70
W0.25
Limiting element voltage, DC or AC
RMS
V 200
Insulation voltage (1 min), DC or AC
PEAK
V 300
Insulation resistance 10
10
Category temperature range °C - 55 to + 125 (+ 155)
Failure rate: FIT
observed
0.1 x 10
-9
/h
