MMA 0204 HT - Professional
Vishay Beyschlag
Professional High Temperature MELF Resistors
FEATURES
•
Operating temperature 175 °C for 1000 h
•
Advanced thin film technology
•
Excellent overall stability: Exceeds class 0.25
•
AEC-Q200 compliant
•
Approval to EN 140401-803
•
Pure Sn termination on Ni barrier layer
•
Green product,
RoHS compliant
supports
lead
(Pb)-free
soldering,
APPLICATIONS
MMA 0204 professional High Temperature MELF resistors
are the perfect choice for most fields of modern professional
electronics where high operating temperatures, power rating,
reliability and stability is of major concern. These improved
properties are enabled by a modified resistive film material.
The typical applications in the fields of automotive
telecommunication and medical equipment reflect the
outstanding level of proven reliability.
•
Automotive
•
Telecommunication
•
Industrial
•
Medical equipment
METRIC SIZE
DIN:
CECC:
0204
RC 3715M
TECHNICAL SPECIFICATIONS
DESCRIPTION
CECC size
Resistance range
Resistance tolerance
Temperature coefficient
Rated dissipation,
P
70 (1)
Operating voltage,
U
max.
AC/DC
Permissible film temperature
(2)
Insulation voltage
1 min;
U
ins
continuous
FIT
observed
300 V
75 V
≤
0.1 x 10
-9
/h
MMA 0204 HT
RC 3715M
47
Ω
to 332 kΩ
± 1 %; ± 0.5 %
± 50 ppm/K; ± 25 ppm/K
0.5 W
200 V
175 °C
Notes
(1)
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.
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.
(2)
Please refer to APPLICATION INFORMATION below
** Please see document “Vishay Green and Halogen-Free Definitions (5-2008)” http://www.vishay.com/doc?99902
www.vishay.com
12
For technical questions, contact: filmresistors.melf@vishay.com
Document Number: 28780
Revision: 28-Oct-08
MMA 0204 HT - Professional
Professional High Temperature
MELF Resistors
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.
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 175 °C the useful lifetime is specified for 1000 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.
Vishay Beyschlag
MAXIMUM RESISTANCE CHANGE AT RATED POWER
DESCRIPTION
Metric size
Operation mode
Rated power
Film temperature
Max. resistance change at
P
70
for resistance range:
ΔR/R
max., after:
1000 h
8000 h
225 000 h
≤
0.10 %
≤
0.15 %
≤
1.0 %
Standard
P
70
= 0.25 W
125 °C
MMA 0204 HT
RC3715M
Power
P
70
= 0.4 W
155 °C
47
Ω
to 332 kΩ
≤
0.15 %
≤
0.35 %
-
≤
0.25 %
-
-
High Temperature
P
70
= 0.5 W
175 °C
Document Number: 28780
Revision: 28-Oct-08
For technical questions, contact: filmresistors.melf@vishay.com
www.vishay.com
13
MMA 0204 HT - Professional
Professional High Temperature
MELF Resistors
DIMENSIONS
L
K
L
1
Vishay Beyschlag
D
1
D
DIMENSIONS
- MELF resistor types, mass and relevant physical dimensions
TYPE
MMA 0204 HT
L
(mm)
3.6 + 0/- 0.2
D
(mm)
1.4 + 0/- 0.1
L
1 min.
(mm)
1.8
D
1
(mm)
D + 0/- 0.15
K
(mm)
0.8 ± 0.1
MASS
(mg)
19
Note
• Color code marking is applied according to IEC 60062* in four bands (E24 series) or five bands (E96 or E192 series). Each colour band appears
as a single solid line, voids are permissible if at least
2
/
3
of the band is visible from each radial angle of view. The last colour band for tolerance
is approximately 50 % wider than the other bands. An interrupted yellow band between the 4th and 5th full band indicates the temperature
coefficient of 25 ppm/K.
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
DESCRIPTION
TCR
± 50 ppm/K
± 0.5 %
±1%
± 25 ppm/K
± 0.5 %
Jumper
TOLERANCE
±1%
RESISTANCE VALUE
MMA 0204 HT
47
Ω
to 332 kΩ
47
Ω
to 332 kΩ
47
Ω
to 332 kΩ
47
Ω
to 332 kΩ
≤
10 mΩ,
I
max.
= 3 A
Resistance ranges printed in bold are preferred TCR/tolerance combinations.
Note
•
Resistance values to be selected for ± 5 % and ± 2 % tolerance from E24, for ± 1 % tolerance from E24 and E96 and for ± 0.5 % tolerance
from E24 and E192.
Document Number: 28780
Revision: 28-Oct-08
For technical questions, contact: filmresistors.melf@vishay.com
www.vishay.com
15
MMA 0204 HT - Professional
Vishay Beyschlag
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 tin on nickel plating.
Four or five colour code rings designate the resistance value
and tolerance in accordance with
IEC 60062
(3)
.
The result of the determined production is verified by an
extensive testing procedure performed on 100 % of the
individual resistors. Only accepted products are laid directly
into the blister tape in accordance with
IEC 60286-3
(3)
or
bulk case in accordance with
IEC 60286-6
(3)
.
Professional High Temperature
MELF Resistors
APPROVALS
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 140400
and the variety of environmental test procedures
of the
IEC 60068*
series.
Conformity is attested by the use of the
CECC
Logo (
the mark of conformity on the package label.
) as
Vishay BEYSCHLAG has achieved
“Approval of
Manufacture”
in accordance with
IEC QC 001002-3,
clause 2.
The release certificate for
“Technology Approval
Schedule”
in accordance with
CECC 240001
based on
IEC QC 001002-3, clause 6
is granted for the Vishay
BEYSCHLAG manufacturing process.
RELATED PRODUCTS
This product family of thin film MELF High Temperature
resistors is complemented by
Zero Ohm Jumpers.
A wider range of TCR, tolerance and resistance values, plus
the option of values from a different E series is available with
products approved to
EN 140401-803,
Version A, without
established reliability, nominal failure rate level E0 (Quality
factor
π
Q
= 3). See the datasheets:
•
“Professional MELF Resistors”, document no. 28713
•
“Precision MELF Resistors”, document no. 28714
•
“High Precision MELF Resistor”, document no. 28715
ASSEMBLY
The resistors are suitable for processing on automatic
SMD assembly systems. They are suitable for automatic
soldering using wave, reflow or vapour phase as shown in
IEC 61760-1
(3)
. The encapsulation is resistant to all
cleaning solvents commonly used in the electronics
industry, including alcohols, esters and aqueous solutions.
The suitablility of conformal coatings, if applied, shall be
qualified by appropiate means to ensure the long-term
stability of the whole system. The resistors are RoHS
compliant, the pure tin plating provides compatibility with
lead (Pb)-free and lead containing soldering processes. The
immunity of the plating against tin whisker growth has been
proven under extensive testing.
All products comply with the
GADSL
(1)
and the
CEFIC-EECA-EICTA
(2)
list of legal restrictions on
hazardous substances. This includes full compliance with
the following directives:
•
2000/53/EC End of Vehicle life Directive (ELV) and
Annex II (ELV II)
•
2002/95/EC Restriction of the use of Hazardous
Substances Directive (RoHS)
•
2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
Solderability is specified for 2 years after production or
requalification. The permitted storage time is 20 years.
Notes
(1)
(2)
Global Automotive Declarable Substance List, see www.gadsl.org
CEFIC (European Chemical Industry Council), EECA (European Electronic Component Manufacturers Association), EICTA (European trade
organisation representing the information and communications technology and consumer electronics), see www.eicta.org
→
issue
→
environment policy
→
chemicals
→
chemicals for electronics
The quoted IEC standards marked with an asterisk (*) are also released as EN standards with the same number and identical contents
For technical questions, contact: filmresistors.melf@vishay.com
Document Number: 28780
Revision: 28-Oct-08
(3)
www.vishay.com
16
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