SMM0204
www.vishay.com
Vishay Draloric
Thin Film Mini-MELF Resistors
FEATURES
• Advanced metal film technology
• AEC-Q200 qualified
• Approval acc. EN 140401-803 available on
request
• Excellent stability in different environmental
conditions
SMM 0204 thin film MELF resistors are the perfect choice
for most fields of modern professional 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.
• Best in class pulse load capability
• Sulfur resistance verified according to
ASTM B 809
• 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 CECC size
Resistance range
Resistance tolerance
Temperature coefficient
Rated dissipation
P
70 (1)
Operating voltage,
U
max.
AC/DC
Operating temperature range
Permissible voltage against ambient (insulation):
1 min;
U
ins
Failure rate: FIT
observed
Zero-Ohm-Resistor: OMM0204
300 V
0.1 x 10
-9
/h
R
max.
= 10 m;
I
max.
= 3 A
SMM0204
0204
RC 3715M
0.22
to 10 M
± 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
-55 °C to 155 °C
Notes
• 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.
(1)
Please refer to APPLICATION INFORMATION below.
APPLICATION INFORMATION
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 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.
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. At the maximum permissible film temperature of 155 °C the useful lifetime is specified for 8000 h. The
designer may estimate the performance of the particular resistor application or set certain load and temperature limits in order
to maintain a desired stability.
Revision: 17-Apr-15
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,
F max.
SMM0204
Max. resistance change at
P
70
for
resistance range,
R/R
after:
1000 h
8000 h
225 000 h
SMM0204
PRECISION
0.07 W
-10 °C to 85 °C
85 °C
10
to 1 M
0.05 %
0.1 %
0.25 %
STANDARD
0.25 W
-55 °C to 125 °C
125 °C
0.22
to 1 M
0.15 %
0.3 %
0.75 %
POWER
0.4 W
-55 °C to 155 °C
155 °C
0.22
to 10 M
0.25 %
0.5 %
-
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE / SIZE
TCR
± 100 ppm/K
± 50 ppm/K
± 0.5 %
± 0.5 %
± 25 ppm/K
SMM0204
± 0.1 %
± 0.5 %
± 15 ppm/K
± 0.25 %
± 0.1 %
Jumper
± 0.25 %
TOLERANCE
±5%
±1%
RESISTANCE
0.22
to 10 M
0.82
to 10 M
10
to 1 M
10
to 1 M
22
to 511 k
43
to 511 k
10
to 221 k
22
to 221 k
43
to 221 k
10 m;
I
max.
= 3 A
E24; E96; E192
E24; E96; E192
E-SERIES
E24
E24; E96
E24; E96; E192
Notes
•
The color of the body coating is light green for jumpers and for a temperature coefficient of ± 50 ppm/K or of ± 100 ppm/K, pink for ± 25 ppm/K,
or violet for ± 15 ppm/K.
•
Zero ohm jumper are marked with one centered black band.
PACKAGING
TYPE / SIZE
CODE
B1
(1)
SMM0204
OMM0204
B3
B0
B1
SMM0204 EN803 E0
OMM0204 EN803 E0
B3
B0
(1)
QUANTITY
1000
(1)
3000
10 000
1000
3000
10 000
CARRIER TAPE
Antistatic blister tape
acc. IEC 60286-3
Type 2a
WIDTH
PITCH
REEL DIAMETER
180 mm/7"
8 mm
4 mm
330 mm/13"
Antistatic blister tape
acc. IEC 60286-3
Type 2a
180 mm/7"
8 mm
4 mm
330 mm/13"
Note
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 acc. IEC 60286-6 available on request.
Revision: 17-Apr-15
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 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
)
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
All products comply with the
IEC 62474,
Material
Declaration for Products of and for the Electrotechnical
Industry.
The dedicated database
(2)
, that list declarable substances,
ensures full compliance 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)
• 2012/19/EU Waste Electrical and Electronic Equipment
Directive (WEEE)
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).
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 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.
Notes
(1)
The quoted IEC standards are also released as EN standards with the same number and identical contents.
(2)
IEC 62474 database can be found at:
http://std.iec.ch/iec62474.
Revision: 17-Apr-15
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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