BCcomponents
Product specification
Professional MELF resistors
FEATURES
MMU 0102; MMA 0204;
MMB 0207
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 60 286-3
or bulk
case in accordance with
IEC 60 286-6.
The resistors are suitable for processing on automatic SMD
assembly systems. They are suitable for automatic soldering
using wave, reflow or vapour phase. Excellent solderability
is proven, even after extended storage in excess of 10 years.
The encapsulation is resistant to all cleaning solvents
commonly used in the electronics industry, including
alcohols, esters and aqueous solutions.
The resistors are completely lead-free, the pure tin plating
provides compatibility with lead-free soldering processes.
The immunity of the plating against tin whisker growth has
been proven under extensive testing. All products comply
with the CEFIC-EECA-EICTA list of legal restrictions on
hazardous substances.
The resistors are tested in accordance with
EN 140 401-803 (superseding CECC 40 401-803)
which
refers to
EN 60115-1
and
EN140 400.
Approval of
conformity is indicated by the CECC logo on the package
label.
BCcomponents BEYSCHLAG has achieved
"Approval of
Manufacturer"
in accordance with
EN 100 114-1.
The
release certificate for
"Technology Approval Schedule"
in
accordance with
CECC 240 001
based on
EN 100 114-6
is
granted for the BCcomponents BEYSCHLAG manufacturing
process.
This product family of thin film MELF resistors is completed
by
Zero Ohm Jumpers.
On request, resistors are available with established
reliability in accordance with
EN 140 101-803 Version E.
Please refer to the special data sheet for information on
failure rate level, available resistance ranges and ordering
codes.
·
Advanced thin film technology
·
Power dissipation rating up to 1 W
·
Excellent overall stability: Class 0,25
·
Wide professional range: 0,1
W
to 10 M
W
·
Green product, supports lead-free soldering.
Metric sizes
DIN:
CECC:
0102
RC 2211M
0204
RC 3715M
0207
RC 6123M
APPLICATIONS
·
Automotive
·
Telecommunication
·
Industrial
·
Medical equipment.
DESCRIPTION
MMU 0102, MMA 0204 and MMB 0207 professional 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.
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 (85% Al
2
O
3
, for MICRO-MELF:
96% 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 60 062.
2002 Nov 19
2
BCcomponents
Product specification
Professional MELF resistors
QUICK REFERENCE DATA
DESCRIPTION
CECC size
Resistance range
Resistance tolerance
Temperature coefficient
Operation mode
Climatic category (LCT/UCT/days)
Rated dissipation,
P
70(1)
Operating voltage,
U
max
AC/DC
Film temperature
Max. resistance change at
P
70
for resistance range,
D
R/R
max., after:
1 000 h
8 000 h
225 000 h
Specified lifetime
Permissible voltage against
ambient :
1 minute;
U
ins
continuous
Failure rate
Notes
200 V
75 V
125
°
C
standard
55/125/56
0,2 W
150 V
155
°
C
125
°
C
0,22
W
to 221 k
W
MMU 0102
RC 2211M
0,22
W
to 2,21 M
W
MMU 0102; MMA 0204;
MMB 0207
MMA 0204
RC 3715M
0,22
W
to 10 M
W
MMB 0207
RC 6123M
0,1
W
to 8,2 M
W
±
5%;
±
2%;
±
1%;
±
0,5%
±
5%;
±
1%;
±
0,5%
±
5%;
±
2%;
±
1%;
±
0,5%
±
100 ppm/K;
±
50 ppm/K;
±
25 ppm/K
±
50 ppm/K;
±
25 ppm/K
power
55/155/56
0,3 W
standard
55/125/56
0,25 W
200 V
155
°
C
power
55/155/56
0,4 W
standard
55/125/56
0,4 W
300 V
125
°
C
power
55/155/56
1,0 W
(2)
155
°
C
0,22
W
to 332 k
W
0,22
W
to 1 M
W
£
0,15%
£
0,3%
£
1%
225 000 h
£
0,25%
£
0,5%
-
8 000 h
£
0,15%
£
0,3%
£
1%
225 000 h
£
0,25%
£
0,5%
-
8 000 h
£
0,15%
£
0,3%
£
1%
225 000 h
£
0,25%
£
0,5%
-
8 000 h
300 V
75 V
500 V
75 V
£
2
´
10
-9
/h
£
0,7
´
10
-9
/h
£
0,7
´
10
-9
/h
1. The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heatflow
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.
2. Specified power rating requires dedicated heat-sink pads.
2002 Nov 19
3
BCcomponents
Product specification
Professional MELF resistors
ORDERING INFORMATION
MMU 0102; MMA 0204;
MMB 0207
Components may be ordered by using either a simple clear text ordering code, see “Type description and ordering code”
or BCcomponents’ unique 12NC.
Numeric Ordering code (12NC)
·
The resistors have a 12-digit ordering code starting with 2312.
·
The subsequent 4 digits indicate the resistor type, specification and packaging; see Table 3.
·
The remaining 4 digits indicate the resistance value:
– The first 3 digits indicate the resistance value.
– The last digit indicates the resistance decade in accordance with Table 4.
Table 2
12NC ordering code indicating resistor type and packaging
DESCRIPTION
B2
2 000
units
ORDERING CODE 2312 ... .....
BLISTER TAPE ON REEL
TOL.
BL
3 000
units
165 3....
165 2....
165 1....
165 5....
166 1....
166 5....
165 90001
155 3....
155 1....
155 5....
156 1....
156 5....
155 90001
B7
7 000
units
B0
10 000
units
175 3....
175 2....
175 1....
175 5....
176 1....
176 5....
175 90001
145 3....
145 1....
145 5....
146 1....
146 5....
145 90001
BULK CASE
M3
3 000
units
M8
8 000
units
060 3....
060 2....
060 1....
060 5....
061 1....
061 5....
060 90001
TYPE
T.C.
±
5%
±
50 ppm/K
MMU 0102
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
040 3....
040 1....
040 5....
041 1....
041 5....
040 90001
±
2%
±
1%
±
0,5%
±
1%
±
0,5%
-
±
5%
±
25 ppm/K
jumper
-
-
-
-
-
-
±
50 ppm/K
±
1%
±
0,5%
MMA 0204
±
25 ppm/K
±
1%
±
0,5%
-
jumper
2002 Nov 19
5
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