MMU 0102, MMA 0204, MMB 0207 - Precision
www.vishay.com
Vishay Beyschlag
Precision Thin Film MELF Resistors
FEATURES
• IECQ-CECC approved according to
EN 140401-803
• AEC-Q200 qualified
• Advanced metal film technology
• Superior stability: class 0.05
• Intrinsic sulfur resistance
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
MMU 0102, MMA 0204 and MMB 0207 precision thin film
MELF resistors are the perfect choice for most fields of
modern professional electronics where reliability and
stability is of major concern. The typical applications in the
fields of automotive, telecommunication, and medical
equipment reflect the outstanding level of proven reliability.
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
Note
(1)
Please refer to APPLICATION INFORMATION below
200 V
300 V
≤
0.05 x 10
-9
/h
500 V
0.2 W
150 V
MMU 0102
0102
RC2211M
22
Ω
to 332 kΩ
MMA 0204
0204
RC3715M
10
Ω
to 511 kΩ
MMB 0207
0207
RC6123M
15
Ω
to 1 MΩ
± 0.25 %; ± 0.1 %
± 0.5 %; ± 0.25 %; ± 0.1 %
± 25 ppm/K; ± 15 ppm/K
0.25 W
200 V
125 °C
-55 °C to 125 °C
0.4 W
350 V
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: 28714
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
MMU 0102, MMA 0204, MMB 0207 - Precision
www.vishay.com
MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
OPERATION MODE
MMU 0102
Rated dissipation,
P
70
MMA 0204
MMB 0207
Operating temperature range
Permissible film temperature,
ϑ
F
max.
MMU 0102
MMA 0204
Max. resistance change at
P
70
for
resistance range, |ΔR/R| after:
MMB 0207
1000 h
8000 h
225 000 h
PRECISION
0.06 W
0.07 W
0.11 W
-10 °C to 85 °C
85 °C
22
Ω
to 332 kΩ
10
Ω
to 511 kΩ
15
Ω
to 1 MΩ
≤
0.05 %
≤
0.1 %
≤
0.3 %
STANDARD
0.2 W
0.25 W
0.4 W
-55 °C to 125 °C
125 °C
22
Ω
to 332 kΩ
10
Ω
to 511 kΩ
15
Ω
to 1 MΩ
≤
0.1 %
≤
0.2 %
≤
0.6 %
Vishay Beyschlag
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
± 25 ppm/K
± 0.1 %
MMU 0102
± 15 ppm/K
± 0.5 %
± 0.25 %
± 0.1 %
± 0.25 %
± 25 ppm/K
± 0.1 %
MMA 0204
± 15 ppm/K
± 0.5 %
± 0.25 %
± 0.1 %
± 0.25 %
± 25 ppm/K
MMB 0207
± 15 ppm/K
(1)
(1)
TOLERANCE
± 0.25 %
RESISTANCE
47
Ω
to 332 kΩ
100
Ω
to 221 kΩ
22
Ω
to 100 kΩ
47
Ω
to 100 kΩ
100
Ω
to 100 kΩ
10
Ω
to 511 kΩ
10
Ω
to 511 kΩ
10
Ω
to 332 kΩ
20
Ω
to 332 kΩ
20
Ω
to 332 kΩ
15
Ω
to 1 MΩ
20
Ω
to 1 MΩ
20
Ω
to 1 MΩ
E-SERIES
E24, E192
E24, E192
± 0.1 %
± 0.1 %
E24, E192
Notes
For the approved IECQ-CECC resistance range, please refer to
www.vishay.com/doc?28945
Revision: 09-Nov-2021
Document Number: 28714
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
MMU 0102, MMA 0204, MMB 0207 - Precision
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 metallised rods.
A special laser is used to achieve the target value by
smoothly cutting a helical groove in the resistive layer
without damaging the ceramics. 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 plating. 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 life
failures 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)
or bulk case in
accordance with
IEC 60286-6
(1)
.
Vishay Beyschlag
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
Where applicable, the resistors are approved within the
IECQ-CECC Quality Assessment System for Electronic
Components to the detail specification
EN 140401-803
which refers to
EN 60115-1, EN 60115-8
and the variety of
environmental test procedures of the
IEC 60068
(1)
series.
Conformity is attested by the use of the
CECC
logo (
) as
the mark of conformity on the package label.
Vishay
Beyschlag
has
achieved
“Approval
of
Manufacturer”
in accordance with
IECQ 03-1.
The release
certificate for “Technology
Approval Schedule”
in
accordance with
CECC 240001
based on
IECQ 03-3-1
is
granted for the Vishay Beyschlag manufacturing process.
The resistors are qualified according to AEC-Q200.
RELATED PRODUCTS
For thin film products with a wider resistance, see the
datasheet:
• “Professional MELF Resistors”
(www.vishay.com/doc?28713)
For products with tighter precision specification, see the
datasheet
• “Ultra Precision MELF Resistors”
(www.vishay.com/doc?28715)
Resistors are available with established reliability in
accordance with
EN 140 401-803 Version E.
Please refer to
datasheet
• “MELF Resistors with Established Reliability”
(www.vishay.com/doc?28707)
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: 28714
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
Test/Measurement
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