SMM0204
www.vishay.com
Vishay Draloric
Thin Film Mini-MELF Resistors
FEATURES
• Advanced metal film technology
• AEC-Q200 qualified
• IECQ-CECC approval acc. EN 140401-803
available on request
• Excellent stability in different environmental
conditions
• Best in class pulse load capability
SMM0204 thin film MELF resistors are the perfect choice for
most fields of modern electronics where reliability and
stability are of major concern. The typical applications in the
fields of automotive, industrial and medical equipment
reflect the outstanding level of proven reliability.
• Intrinsic sulfur resistance
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
APPLICATIONS
• Automotive
• Telecommunication
• Industrial
• Medical equipment
TECHNICAL SPECIFICATIONS
DESCRIPTION
DIN size
Metric size code
Resistance range
Resistance tolerance
Temperature coefficient
Rated dissipation
P
70 (1)
Operating voltage,
U
max.
AC
RMS
/DC
Permissible film temperature,
ϑ
F max. (1)
Operating temperature range
(1)
Permissible voltage against ambient (insulation):
1 min;
U
ins
Failure rate: FIT
observed
300 V
≤
0.05 x 10
-9
/h
SMM0204
0204
RC3715M
0.22
Ω
to 10 MΩ; 0
Ω
± 5 %; ± 1 %; ± 0.5 %; ± 0.25 %; ± 0.1 %
± 100 ppm/K; ± 50 ppm/K; ± 25 ppm/K; ± 15 ppm/K
0.4 W
200 V
155 °C
-55 °C to 155 °C
Notes
• The IECQ-CECC approved product versions SMM0204 EN803 E0 and OMM0204 EN803 E0 respectively feature a quality factor
π
Q
= 3 for
the purpose of system MTBF calculations, compared with
π
Q
= 10 for the standard versions
(1)
Please refer to APPLICATION INFORMATION 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: 09-Nov-2021
Document Number: 20004
1
For technical questions, contact:
melf@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
SMM0204
www.vishay.com
Vishay Draloric
MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
OPERATION MODE
Rated dissipation,
P
70
Operating temperature range
Permissible film temperature,
ϑ
F max.
SMM0204
Max. resistance change at
P
70
for
resistance range, |ΔR/R| after:
1000 h
8000 h
225 000 h
SMM0204
PRECISION
0.07 W
-10 °C to 85 °C
85 °C
10
Ω
to 1 MΩ
≤
0.05 %
≤
0.1 %
≤
0.25 %
STANDARD
0.25 W
-55 °C to 125 °C
125 °C
0.22
Ω
to 10 MΩ
≤
0.15 %
≤
0.3 %
≤
0.75 %
POWER
0.4 W
-55 °C to 155 °C
155 °C
0.22
Ω
to 10 MΩ
≤
0.25 %
≤
0.5 %
-
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
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE / SIZE
TCR
± 100 ppm/K
± 50 ppm/K
TOLERANCE
±5%
±1%
± 0.5 %
± 0.5 %
SMM0204
± 25 ppm/K
± 0.25 %
± 0.1 %
± 0.5 %
± 15 ppm/K
Jumper,
I
max.
= 3 A
± 0.25 %
± 0.1 %
OMM0204
≤
10 mΩ
(1)
RESISTANCE
0.22
Ω
to 0.91
Ω
0.82
Ω
to 10 MΩ
10
Ω
to 1.65 MΩ
10
Ω
to 1.65 MΩ
22
Ω
to 1.65 MΩ
22
Ω
to 1.65 MΩ
10
Ω
to 221 kΩ
22
Ω
to 221 kΩ
43
Ω
to 221 kΩ
0
Ω
E-SERIES
E24
E24; E96
E24; E192
E24; E192
E24; E192
Notes
• The color of the body coating is light green for jumpers and for a temperature coefficient of ± 50 ppm/K or ± 100 ppm/K, pink for ± 25 ppm/K,
or violet for ± 15 ppm/K
• Zero ohm jumper are marked with one centered black band
(1)
For the approved IECQ-CECC resistance range, please refer to
www.vishay.com/doc?28946
PACKAGING
TYPE / SIZE
CODE
B1
(1)
SMM0204
OMM0204
B3
B0
B1
(1)
SMM0204 EN803 E0
OMM0204 EN803 E0
B3
B0
QUANTITY
1000
(1)
3000
10 000
1000
(1)
3000
10 000
Antistatic blister tape acc.
IEC 60286-3, Type 2a
8 mm
4 mm
8 mm
4 mm
PACKAGING
STYLE
WIDTH
PITCH
PACKAGING
DIMENSIONS
Ø 180 mm / 7"
Ø 330 mm / 13"
Ø 180 mm / 7"
Ø 330 mm / 13"
Note
(1)
Package of 1000 pieces, code B1, is available only for products with TCR ± 25 ppm/K or ± 15 ppm/K, and with tolerance ± 0.25 % or ± 0.1 %.
Bulk case according to IEC 60286-6 available on request
Revision: 09-Nov-2021
Document Number: 20004
2
For technical questions, contact:
melf@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
SMM0204
www.vishay.com
DESCRIPTION
Production is strictly controlled and follows an extensive set
of instructions established for reproducibility. A
homogeneous film of metal alloy is deposited on a high
grade ceramic body (Al
2
O
3
) and conditioned to achieve the
desired temperature coefficient. Nickel plated steel
termination caps are firmly pressed on the metallized rods.
A special laser is used to achieve the target value by
smoothly cutting a helical groove in the resistive layer
without damaging the ceramic. The resistor elements are
covered by a protective coating designed for electrical,
mechanical and climatic protection. The terminations
receive a final pure matte tin on nickel and copper plating for
enhanced temperature cycling stability. Four or five color
code rings designate the resistance value and tolerance in
accordance with
IEC 60062
(1)
.
The result of the determined production is verified by an
extensive testing procedure performed on 100 % of the
individual resistors. This includes full screening for the
elimination of products with a potential risk of early field
failures (feasible for
R
≥
10
Ω)
according to EN 140401-803,
2.1.2.2. Only accepted products are laid directly into the
blister tape in accordance with
IEC 60286-3, Type 2a
(1)
.
Vishay Draloric
MATERIALS
Vishay acknowledges the following systems for the
regulation of hazardous substances:
• IEC 62474, Material Declaration for Products of and for the
Electrotechnical Industry, with the list of declarable
substances given therein
(2)
• The Global Automotive Declarable Substance List
(GADSL)
(3)
• The REACH regulation (1907/2006/EC) and the related list
of substances with very high concern (SVHC)
(4)
for its
supply chain
The products do not contain any of the banned substances
as per IEC 62474, GADSL, or the SVHC list, see
www.vishay.com/how/leadfree.
Hence the products fully comply with the following
directives:
• 2000/53/EC End-of-Life Vehicle Directive (ELV) and
Annex II (ELV II)
• 2011/65/EU Restriction of the Use of Hazardous
Substances
Directive
(RoHS)
with
amendment
2015/863/EU
• 2012/19/EU Waste Electrical and Electronic Equipment
Directive (WEEE)
Vishay pursues the elimination of conflict minerals from its
supply chain, see the Conflict Minerals Policy at
www.vishay.com/doc?49037.
ASSEMBLY
The resistors are suitable for processing on automatic SMD
assembly systems. They are suitable for automatic
soldering using wave, reflow or vapor phase as shown in
IEC 61760-1
(1)
. The encapsulation is resistant to all
cleaning solvents commonly used in the electronics
industry, including alcohols, esters and aqueous solutions.
The suitability of conformal coatings, potting compounds
and their processes, if applied, shall be qualified by
appropriate means to ensure the long-term stability of the
whole system.
The resistors are completely lead (Pb)-free, the pure matte
tin plating provides compatibility with lead (Pb)-free and
lead containing soldering processes. Solderability is
specified for 2 years after production or requalification,
however, excellent solderability is proven after extended
storage in excess of 10 years. The permitted storage time is
20 years. The immunity of the plating against tin whisker
growth has been proven under extensive testing.
APPROVALS
The resistors are qualified according to AEC-Q200.
Resistors approved according to EN 140401-803 are
available by using the related ordering code.
RELATED PRODUCTS
MELF resistors of other sizes are available:
Thin Fim Micro-MELF Resistors SMM0102
(www.vishay.com/doc?20003)
Thin Fim MELF Resistors SMM0207
(www.vishay.com/doc?20005)
Resistors are available with established reliability in
accordance with
EN 140401-803 Version E.
Please refer to
datasheet “MELF Resistors with Established Reliability”
(www.vishay.com/doc?28707).
MS1 .... ESCC high-reliability thin film MINI-MELF resistors
are the premium choice for design and manufacture of
equipment, where matured technology and proven reliability
are of utmost importance. They are regularly used in
communication and research satellites and fit equally well
into aircraft and military electronic systems.
Approval of the MS1 .... ESCC products is granted by the
European Space Components Coordination and registered
in the ESCC Qualified Parts List, REP005.
(www.vishay.com/doc?28790).
Notes
(1)
The quoted IEC standards are also released as EN standards with the same number and identical contents
(2)
The IEC 62474 list of declarable substances is maintained in a dedicated database, which is available at
http://std.iec.ch/iec62474
(3)
The Global Automotive Declarable Substance List (GADSL) is maintained by the American Chemistry Council and available at
www.gadsl.org
(4)
The SVHC list is maintained by the European Chemical Agency (ECHA) and available at
http://echa.europa.eu/candidate-list-table
Revision: 09-Nov-2021
Document Number: 20004
4
For technical questions, contact:
melf@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
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