DATA SHEET
Product specification
Supersedes data of 6th September 2000
File under BCcomponents, BC08
2002 Nov 22
BCcomponents
MMU 0102; MMA 0204;
MMB 0207
Precision MELF resistors
2002 Nov 22 2
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
FEATURES
·Advanced thin film technology
·Lowest TC: 15 to 25 ppm/K
·Precision tolerance of value: ±0,1 and ±0,25%
·Superior overall stability: Class 0,05
·Wide precision range: 10 W to 1 MW
·Green product, supports lead-free soldering.
Metric sizes
APPLICATIONS
·Test and measuring equipment
·Industrial and medical electronics.
DESCRIPTION
MMU 0102, MMA 0204 and MMB 0207 precision thin film
MELF resistors combine the proven reliability of the
professional products with an advanced level of precision
and stability. Therefore they are perfectly suited for
applications in the fields of test and measuring equipment
along with industrial and medical electronics.
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% Al2O3, for MICRO-MELF: 96%
Al2O3) 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.
A further conditioning is applied in order to stabilise the
trimming result. 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. Five colour code rings designate the
resistance value and tolerance in accordance with
IEC 60 062.
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.
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.
On request, resistors are available with established
reliability in accordance with EN 140 401-803 Version E.
Please refer to the special data sheet for information on
failure rate level, available resistance ranges and ordering
codes.
DIN: 0102 0204 0207
CECC: RC 2211M RC 3715M RC 6123M
2002 Nov 22 3
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
QUICK REFERENCE DATA
Note
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.
DESCRIPTION MMU 0102 MMA 0204 MMB 0207
Metric CECC size RC 2211M RC 3715M RC 6123M
Resistance range 100 W to 221 kW10 W to 332 kW15 W to 1 MW
Resistance tolerance ±0,25%; ±0,1%; ±0,5% ±0,25%; ±0,1%
Temperature coefficient ±25 ppm/K; ±15 ppm/K
Operation mode precision standard precision standard precision standard
Climatic category (LCT/UCT/days) 10/85/56 55/125/56 10/85/56 55/125/56 10/85/56 55/125/56
Rated dissipation, P70(1) 0,06 W 0,2 W 0,07 W 0,25 W 0,11 W 0,4 W
Operating voltage, Umax AC/DC 150 V 200 V 300 V
Film temperature 85 °C125 °C85 °C125 °C85 °C125 °C
Max. resistance change at P70
for resistance range,
DR/R max., after:
10 W to 221 kW10 W to 332 kW15 W to 1 MW
1 000 h £ 0,05% £ 0,1% £ 0,05% £ 0,1% £ 0,05% £ 0,1%
8 000 h £ 0,1% £ 0,2% £ 0,1% £ 0,2% £ 0,1% £ 0,2%
225 000 h £ 0,3% £ 0,6% £ 0,3% £ 0,6% £ 0,3% £ 0,6%
Specified lifetime 225 000 h 225 000 h 225 000 h
Permissible voltage against ambient:
1 minute, Uins 200 V 300 V 500 V
continuous 75 V 75 V 75 V
Failure rate £ 2,0 ´ 10-9/h £ 0,7 ´ 10-9/h £ 0,7 ´ 10-9/h
2002 Nov 22 4
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
Table 1 Temperature coefficient and resistance range
Note
1. Resistance values to be selected from E24 and E192 series, for other values please contact the factory.
Resistance ranges printed in bold are preferred T.C. / tolerance combinations with optimized availability.
DESCRIPTION RESISTANCE VALUE(1)
T.C. TOLERANCE MMU 0102 MMA 0204 MMB 0207
±25 ppm/K
±0,25% 100 W to 221 kW22 W to 332 kW15 W to 1 MW
±0,1% 100 W to 100 kW43 W to 332 kW33 W to 1 MW
±15 ppm/K
±0,5% 100 W to 100 kW10 W to 221 kW -
±0,25% 100 W to 100 kW22 W to 221 kW -
±0,1% 100 W to 100 kW43 W to 221 kW33 W to 1 MW
2002 Nov 22 5
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
ORDERING INFORMATION
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 2.
·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 3.
Table 2 12NC ordering code indicating resistor type and packaging
Resistance ranges printed in bold are preferred T.C. / tolerance combinations with optimized availability.
DESCRIPTION ORDERING CODE 2312 ... .....
BLISTER TAPE ON REEL BULK CASE
TY P E T.C. TOL.
B1
1 000
units
B2
2 000
units
BL
3 000
units
B7
7 000
units
B0
10 000
units
M3
3 000
units
M8
8 000
units
MMU 0102
±25 ppm/K
±0,25% 171 6.... -166 6.... -176 6.... -061 6....
±0,1% 171 7.... -166 7.... -176 7.... -061 7....
±15 ppm/K
±0,5% 172 5.... -167 5.... -177 5.... -062 5....
±0,25% 172 6.... -167 6.... -177 6.... -062 6....
±0,1% 172 7.... -167 7.... -177 7.... -062 7....
MMA 0204
±25 ppm/K
±0,25% 141 6.... -156 6.... -146 6.... 041 6.... -
±0,1% 141 7.... -156 7.... -146 7.... 041 7.... -
±15 ppm/K
±0,5% 142 5.... -157 5.... -147 5.... 042 5.... -
±0,25% 142 6.... -157 6.... -147 6.... 042 6.... -
±0,1% 142 7.... -157 7.... -147 7.... 042 7.... -
MMB 0207
±25 ppm/K
±0,25% 181 6.... 196 6.... -186 6.... ---
±0,1% 181 7.... 196 7.... -186 7.... ---
±15 ppm/K ±0,1% 182 7.... 197 7.... -187 7.... ---
2002 Nov 22 6
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
Table 3 Last digit of 12NC indicating resistance decade
RESISTANCE DECADE LAST DIGIT
10 W to 99,9 W9
100 W to 999 W1
1 kW to 9,99 kW2
10 kW to 99,9 kW3
100 kW to 999 kW4
1 MW to 9,99 MW5
ORDERING EXAMPLE
The ordering code of a MMA 0204 resistor, value 47 kW and
TC 25 with ±0,1% tolerance, supplied in blister tape of
3 000 units per reel is: 2312 156 74703.
Type description and ordering code
·We recommend that the clear text ordering code is used to minimize the possibility of errors in order handling.
0204M M A - 25 0,1% BL 47 k
Resistance value
see Table 1
Packaging(1)
B1 = 1 000 units
B2 = 2 000 units
BL = 3 000 units
B7 = 7 000 units
B0 = 10 000 units
M3 = 3 000 units (bulk case)
M8 = 8 000 units (bulk case)
Tolerance
± 0,1 %
± 0,25 %
± 0,5 %
Temperature coefficient
± 15 ppm/K
± 25 ppm/K
Film type
M = metal
Size code
U = 0102
A = 0204
B = 0207
DIN size
0102
0204
0207
Product code
M = MELF, cylindrical
(1) Availability in accordance with Table 2.
2002 Nov 22 7
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
FUNCTIONAL DESCRIPTION
Derating
Ambient Temperature amb
ϑ
C
100 150
0
-50 0 50
0,2
W
70
0,4
Power Dissipation
P
Fig.1 Derating, standard operation.
MMA 0204
MMB 0207
MMU 0102
C
100 150
0
-50 0 50
0,1
W
70
0,2
Ambient Temperature
amb
Power Dissipation
P
ϑ
Fig.2 Derating, precision operation.
MMA 0204
MMB 0207
MMU 0102
2002 Nov 22 8
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
Current noise
0,01
1 kΩ10 kΩ100 kΩ1 MΩ10 MΩ
0,1
1
µV/V
Resistance Value
R
Current Noise
A
1
Fig.3 Current noise A1 in accordance with IEC 60 195.
MMA 0204
MMB 0207
MMU 0102
2002 Nov 22 9
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
MECHANICAL DATA
Outlines
Fig.4 Outlines.
For dimensions see Table 4.
L
DD1
L1
K
Table 4 MELF resistor types, mass and relevant physical dimensions; see Fig.4
TY P E L
(mm)
D
(mm)
L1 min
(mm)
D1
(mm)
K
(mm)
MASS
(mg)
MMU 0102 2,2 +0/-0,1 1,1 +0/-0,1 1,2 D +0/-0,1 0,4 ±0,05 7
MMA 0204 3,6 +0/-0,2 1,4 +0/-0,1 1,8 D +0/-0,15 0,8 ±0,1 19
MMB 0207 5,8 +0/-0,2 2,2 +0/-0,2 2,8 D +0/-0,2 1,2 ±0,2 79
2002 Nov 22 10
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
EN 60 115-1, generic specification
EN 140 400, sectional specification
EN 140 401-803, detail specification
The components are approved in accordance with the
European CECC-system, where applicable. For the full test
schedule refer to the documents listed above. The testing
also covers most of the requirements specified by EIA/IS-703
and JIS-C-5202.
The tests are carried out in accordance with IEC 60 068 and
under standard atmospheric conditions in accordance with
IEC 60 068-1, 5.3. Climatic category LCT/UCT/56 (rated
temperature range: Lower Category Temperature, Upper
Category Temperature; damp heat, long term, 56 days) is
valid.
Unless otherwise specified the following values apply:
Temperature: 15 °C to 35 °C
Relative humidity: 45% to 75%
Air pressure: 86 kPa to 106 kPa (860 mbar to
1 060 mbar).
The requirements stated in Table 5 are based on the required
tests and permitted limits of EN 140 401-803. However,
some additional tests and a number of improvements against
those minimum requirements have been included. The
stated requirements for long-term tests are typically fulfilled
with a statistical safety of at least +5 s.x
Table 5 Test procedures and requirements
EN
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (DR/R)
stability for product
types:
STABILITY
CLASS 0,05
OR BETTER
STABILITY
CLASS 0,1
OR BETTER
STABILITY
CLASS 0,25
OR BETTER
MMU 0102 100 W to 100 kW43 W to 147 kW10 W to 221 kW
MMA 0204 100 W to 100 kW43 W to 221 kW10 W to 332 kW
MMB 0207 100 W to 270 kW43 W to 510 kW15 W to 1 MW
4.5 -resistance - ±0,5%; ±0,25%; ±0,1%
4.8.4.2 -temperature
coefficient
at 20 / -55 / 20 °C
and
20 / 125 / 20 °C
±25 ppm/K, ±15 ppm/K
4.25.1 -endurance
at 70 °C:
precision
operation
mode
U =
£ Umax;
1,5 h on; 0,5 h off;
70 °C; 1 000 h ±(0,05%R + 5 mW)
70 °C; 8 000 h ±(0,1%R + 5 mW)
endurance
at 70 °C:
standard
operation
mode
U =
£ Umax;
1,5 h on; 0,5 h off;
70 °C; 1 000 h ±(0,1%R + 5 mW)
70 °C; 8 000 h ±(0,2%R + 5 mW)
P70 R´
P70 R´
2002 Nov 22 11
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
stability for product
types:
STABILITY
CLASS 0,05
OR BETTER
STABILITY
CLASS 0,1
OR BETTER
STABILITY
CLASS 0,25
OR BETTER
MMU 0102 100 W to 100 kW43 W to 147 kW10 W to 221 kW
MMA 0204 100 W to 100 kW43 W to 221 kW10 W to 332 kW
MMB 0207 100 W to 270 kW43 W to 510 kW15 W to 1 MW
4.25.3 -endurance
at upper
category
temperature
85 °C; 1 000 h ±(0,02%R + 5 mW)±(0,05%R + 5 mW)±(0,1%R + 5 mW)
125 °C; 1 000 h ±(0,05%R + 5 mW)±(0,1%R + 5 mW)±(0,15%R + 5 mW)
4.24 3 (Ca) damp heat,
steady state
40 ±2 °C; 56 days;
93 +2/-3% RH
±(0,05%R + 5 mW)±(0,1%R + 5 mW)
4.39 67 (Cy) damp heat,
steady state,
accelerated
85 ±2 °C;
85 ±5% RH;
U = 0,1 ´
£ 100 V;
1 000 h ±(0,15%R + 5 mW)±(0,25%R + 5 mW)
4.23 climatic
sequence:
4.23.2 2 (Ba) dry heat UCT; 16 h
4.23.3 30 (Db) damp
heat,
cyclic
55 °C; 24 h;
³ 90% RH; 1 cycle
4.23.4 1 (Aa) cold LCT; 2 h
4.23.5 13 (M) low air
pressure
8,5 kPa; 2 h;
25 ±10 °C
4.23.6 30 (Db) damp
heat,
cyclic
55 °C; 24 h;
³ 90% RH;
5 cycles
LCT = -10 °C;
UCT = 85 °C ±(0,05%R + 5 mW)±(0,1%R + 5 mW)-
LCT = -55 °C;
UCT = 125 °C
- -
±(0,1%R + 5 mW)
-1 (Aa) cold -55 °C; 2 h ±(0,02%R + 5 mW)
EN
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (DR/R)
P70 R´
2002 Nov 22 12
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
stability for product
types:
STABILITY
CLASS 0,05
OR BETTER
STABILITY
CLASS 0,1
OR BETTER
STABILITY
CLASS 0,25
OR BETTER
MMU 0102 100 W to 100 kW43 W to 147 kW10 W to 221 kW
MMA 0204 100 W to 100 kW43 W to 221 kW10 W to 332 kW
MMB 0207 100 W to 270 kW43 W to 510 kW15 W to 1 MW
4.19 14 (Na) rapid
change of
temperature
30 minutes at LCT;
30 minutes at UCT;
LCT = -10 °C;
UCT = 85 °C
5 cycles ±(0,01%R + 5 mW)±(0,02%R + 5 mW)-
1000 cycles ±(0,1%R + 5 mW)±(0,1%R + 5 mW)-
LCT = -55 °C;
UCT = 125°C
5 cycles - - ±(0,025%R
+ 5 mW)
1000 cycles - - ±(0,2%R + 5 mW)
4.13 -short time
overload;
precision
operation
mode U = 2,5 ´
£ 2 ´ Umax; 5 s
±(0,01%R + 5 mW)±(0,02%R + 5 mW)±(0,03%R + 5 mW)
short time
overload;
standard
operation
mode
±(0,05%R + 5 mW)
4.27 single pulse
high voltage
overload;
standard
mode
severity no. 4:
U = 10 ´
£ 2 ´ Umax;
10 pulses
10 ms/700 ms
±(0,25%R + 5 mW)(1)
4.37 -periodic
electric
overload;
standard
mode
U =
£ 2 ´ Umax;
0,1 s on; 2,5 s off;
1000 cycles
±(0,5%R + 5 mW)(1)
4.22 6 (Fc) vibration endurance by
sweeping;
10 to 2000 Hz;
no resonance;
amplitude
£ 1,5 mm or
£ 200 m/s2; 6 h
±(0,01%R + 5 mW)±(0,02%R + 5 mW)±(0,03%R + 5 mW)
EN
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (DR/R)
P70 R´
P70 R´
15 P70
´R´
2002 Nov 22 13
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
stability for product
types:
STABILITY
CLASS 0,05
OR BETTER
STABILITY
CLASS 0,1
OR BETTER
STABILITY
CLASS 0,25
OR BETTER
MMU 0102 100 W to 100 kW43 W to 147 kW10 W to 221 kW
MMA 0204 100 W to 100 kW43 W to 221 kW10 W to 332 kW
MMB 0207 100 W to 270 kW43 W to 510 kW15 W to 1 MW
4.17.2 58 (Td) solderability solder bath
method; SnPb40;
non-activated flux;
215 ±3 °C; 3 ±0,3 s
good tinning (³ 95% covered); no visible damage
solder bath
method;
SnAg3Cu0,5 or
SnAg3,5;
non-activated flux;
235 ±3 °C; 2 ±0,2 s
good tinning (³ 95% covered); no visible damage
4.18.2 58 (Td) resistance to
soldering
heat
solder bath
method;
260 ±5 °C;
10 ±1 s
note 2 ±(0,05%R
+ 10 mW)
reflow method 2
(IR/forced gas
convection);
260 ±5 °C;
10 ±1 s
±(0,01%R
+ 5 mW)
±(0,025%R + 5 mW)
4.29 45 (XA) component
solvent
resistance
isopropyl alcohol;
50 °C; method 2
no visible damage
4.30 45 (XA) solvent
resistance of
marking
isopropyl alcohol;
50 °C; method 1,
toothbrush
marking legible; no visible damage
EN
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (DR/R)
2002 Nov 22 14
BCcomponents Product specification
Precision MELF resistors MMU 0102; MMA 0204;
MMB 0207
Notes
1. The pulse load stability of professional MELF resistors applies for precision resistors also. However, severe pulse loads
are likely to jeopardize precision stability requirements.
2. Wave soldering is not recommended.
3. Special requirements apply to MICRO-MELF, MMU 0102:
–R < 100 W: ±(0,15%R + 10 mW)
– 100 W £ R £ 10 kW: ±0,1%R
–R > 10 kW: ±0,05%R
stability for product
types:
STABILITY
CLASS 0,05
OR BETTER
STABILITY
CLASS 0,1
OR BETTER
STABILITY
CLASS 0,25
OR BETTER
MMU 0102 100 W to 100 kW43 W to 147 kW10 W to 221 kW
MMA 0204 100 W to 100 kW43 W to 221 kW10 W to 332 kW
MMB 0207 100 W to 270 kW43 W to 510 kW15 W to 1 MW
4.32 21 (Ue3)shear
(adhesion)
45 N no visible damage
4.33 21 (Ue1)substrate
bending
depth 2 mm,
3 times
no visible damage, no open circuit in bent position
±(0,02%R + 10 mW)(3) ±(0,05%R
+ 10 mW)(3)
4.7 -voltage
proof
Urms = Uins; 60 s no flashover or breakdown
4.35 -flammability IEC 60 695-2-2,
needle flame test;
10 s
no burning after 30 s
EN
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (DR/R)
