MMU 0102, MMA 0204, MMB 0207 - Precision
www.vishay.com
Vishay Beyschlag
Precision Thin Film MELF Resistors
FEATURES
• 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
MMU 0102
MMA 0204
MMB 0207
0102
0204
0207
Metric size code
RC2211M
RC3715M
RC6123M
Resistance range
22 to 332 k
10 to 511 k
15 to 1 M
DIN size
Resistance tolerance
±0.5 %; ± 0.25 %; ± 0.1 %
Temperature coefficient
± 0.25 %; ± 0.1 %
± 25 ppm/K; ± 15 ppm/K
Rated dissipation, P70 (1)
0.2 W
0.25 W
0.4 W
Operating voltage, Umax. ACRMS/DC
150 V
200 V
350 V
Permissible film temperature, F max. (1)
Operating temperature range
125 °C
(1)
-55 °C to 125 °C
Permissible voltage against ambient (insulation):
1 min, Uins
Failure rate: FITobserved
200 V
300 V
500 V
0.1 x 10-9/h
Note
(1) Please refer to APPLICATION INFORMATION below
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: 16-Sep-16
Document Number: 28714
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MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
OPERATION MODE
Rated dissipation, P70
PRECISION
STANDARD
MMU 0102
0.06 W
0.2 W
MMA 0204
0.07 W
0.25 W
MMB 0207
0.11 W
0.4 W
-10 °C to 85 °C
-55 °C to 125 °C
85 °C
125 °C
MMU 0102
22 to 332 k
22 to 332 k
MMA 0204
10 to 511 k
10 to 511 k
MMB 0207
15 to 1 M
15 to 1 M
1000 h
0.05 %
0.1 %
8000 h
0.1 %
0.2 %
225 000 h
0.3 %
0.6 %
Operating temperature range
Permissible film temperature, F max.
Max. resistance change at P70 for
resistance range, |R/R| after:
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
TOLERANCE
RESISTANCE
± 0.25 %
47 to 332 k
± 0.1 %
100 to 221 k
± 0.5 %
22 to 100 k
± 0.25 %
47 to 100 k
± 0.1 %
100 to 100 k
± 0.25 %
20 to 511 k
± 0.1 %
20 to 511 k
± 0.5 %
10 to 332 k
± 0.25 %
20 to 332 k
± 0.1 %
20 to 332 k
± 0.25 %
15 to 1 M
± 0.1 %
20 to 1 M
± 0.1 %
20 to 1 M
± 25 ppm/K
MMU 0102
± 15 ppm/K (1)
± 25 ppm/K
MMA 0204
± 15 ppm/K
(1)
± 25 ppm/K
MMB 0207
± 15 ppm/K
E-SERIES
E24, E192
E24, E192
E24, E192
Note
(1) Approval to EN 140401-803, “Version A”, is not available for TCR ± 15 ppm/K; ± 0.5 %
Revision: 16-Sep-16
Document Number: 28714
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PACKAGING
TYPE/SIZE
MMU 0102
MMA 0204
MMB 0207
CODE
QUANTITY
B1
1000
B3 = BL
3000
B0
10 000
M8
8000
B1
1000
B3 = BL
3000
B0
10 000
M3
3000
B1
1000
B2
2000
B7
7000
PACKAGING STYLE
WIDTH
PITCH
Antistatic blister tape acc.
IEC 60286-3, Type 2a
8 mm
4 mm
PACKAGING
DIMENSIONS
Ø 180 mm/7"
Ø 330 mm/13"
Bulk case acc.
IEC 60286-6
-
-
Antistatic blister tape acc.
IEC 60286-3, Type 2a
8 mm
4 mm
Ø 180 mm/7"
Ø 330 mm/13"
Bulk case acc.
IEC 60286-6
-
-
Antistatic blister tape acc.
IEC 60286-3, Type 2a
12 mm
4 mm
Ø 180 mm/7"
Ø 330 mm/13"
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: MMA02040D5620BB300
M
M
A
0
2
0
4
0
D
5
6
2
0
B
B
3
0
0
TYPE/SIZE
VERSION
TCR
RESISTANCE
TOLERANCE
PACKAGING
MMU0102
MMA0204
MMB0207
0=
EN 140401-803,
“Version A”
E = ± 15 ppm/K
D = ± 25 ppm/K
3 digit value
1 digit multiplier
B = ± 0.1 %
C = ± 0.25 %
D = ± 0.5 %
B1
B3
B0
B2
B7
M3
M8
Multiplier
9 = *10-1
0 = *100
1 = *101
2 = *102
3 = *103
4 = *104
Product Description: MMA 0204-25 0.1 % BL 562R
MMA
0204
-25
0.1 %
BL
562R
TYPE
SIZE
TCR
TOLERANCE
PACKAGING
RESISTANCE
MMU
MMA
MMB
0102
0204
0207
± 15 ppm/K
± 25 ppm/K
± 0.1 %
± 0.25 %
± 0.5 %
BL
B0
B1
B2
B7
M3
M8
562R = 562
Notes
• Products can be ordered using either the PART NUMBER or the PRODUCT DESCRIPTION
• Approval to EN 140401-803, “Version A”, is not available for ± 15 ppm/K, ± 0.5 %
Revision: 16-Sep-16
Document Number: 28714
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DESCRIPTION
MATERIALS
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 (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. 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 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
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: 16-Sep-16
Document Number: 28714
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THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
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MMU 0102, MMA 0204, MMB 0207 - Precision
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Power Dissipation P
FUNCTIONAL PERFORMANCE
0.4
MMB 0207
MMA 0204
MMU 0102
W
0.3
0.2
0.1
0
- 50
0
50
70
C
100
150
Ambient Temperature ϑamb
Power Dissipation P
Derating - Precision Operation Mode
0.4
MMB 0207
MMA 0204
MMU 0102
W
0.3
0.2
0.1
0
- 50
0
50
70
C
100
150
Ambient Temperature ϑamb
Pulse Load P
Derating - Standard Operation Mode
1000
MMB 0207
MMA 0204
MMU 0102
W
100
10
1
0.1
1 µs
10 µs
100 µs
1 ms
10 ms
100 ms
1s
10 s
Pulse Duration ti
Maximum pulse load, single pulse; applicable if P 0 and n ≤ 1000 and U ≤ Umax.;
for permissible resistance change ± (0.5 % R + 0.01 Ω)
Single Pulse
Revision: 16-Sep-16
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Pulse Load P
FUNCTIONAL PERFORMANCE
1000
MMB 0207
MMA 0204
MMU 0102
W
100
10
1
0.1
1 µs
10 µs
100 µs
10 ms
1 ms
100 ms
1s
10 s
Pulse Duration ti
Maximum pulse load, continuous pulse; applicable if P ≤ P (ϑamb) and U ≤ Umax.;
for permissible resistance change ± (0.5 % R + 0.01 Ω)
Pulse Voltage Umax.
Continuous Pulse
MMB 0207
MMA 0204
MMU 0102
V
1000
100
1 µs
10 µs
100 µs
10 ms
1 ms
100 ms
1s
10 s
Pulse Duration ti
Maximum pulse voltage, single and continuous pulses; applicable if P ≤ Pmax.;
for permissible resistance change ± (0.5 % R + 0.01 Ω)
Pulse Voltage U
Pulse Voltage
10 kV
1 kV
100 V
MMB 0207
MMA 0204
MMU 0102
10 V
10 Ω
100 Ω
1 kΩ
10 kΩ
100 kΩ
1 MΩ
10 MΩ
Resistance Value R
Pulse load rating in accordance with IEC 60115-1, 4.27; 1.2 μs/50 μs;
5 pulses at 12 s intervals; for permissible resistance change ± (0.5 % R + 0.05 Ω)
1.2/50 Pulse
Revision: 16-Sep-16
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Pulse Voltage U
FUNCTIONAL PERFORMANCE
MMB 0207
MMA 0204
MMU 0102
10 kV
1 kV
100 V
10 V
10 Ω
100 Ω
1 kΩ
10 kΩ
100 kΩ
10 MΩ
1 MΩ
Resistance Value R
Pulse load rating in accordance with IEC 60115-1, 4.27; 10 μs/700 μs;
10 pulses at 1 minute intervals; for permissible resistance change ± (0.5 % R + 0.05 Ω)
Current Noise Voltage Ratio
10/700 Pulse
1
µV/ V
0. 1
MMB 0207
MMA 0204
MMU 0102
0.01
100 Ω
1 kΩ
10 kΩ
100 kΩ
1 MΩ
10 MΩ
Resistance Value R
In accordance with IEC 60195
Current Noise Voltage Ratio
Revision: 16-Sep-16
Document Number: 28714
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TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
EN 60115-1, generic specification
EN 60115-8 (successor of EN 140400), sectional
specification
EN 140401-803, detail specification
The testing also covers most of the requirements specified
by EIA/ECA-703 and JIS-C-5201-1.
The tests are carried out under standard atmospheric
conditions in accordance with IEC 60068-1, 4.3, whereupon
the following values are applied:
IEC 60068-2-xx, test methods
The components are approved under the IECQ-CECC
quality assessment system for electronic components.
The parameters stated in the Test Procedures and
Requirements table are based on the required tests and
permitted limits of EN 140401-803. The table presents only
the most important tests, for the full test schedule refer to
the documents listed above. However, some additional
tests and a number of improvements against those
minimum requirements have been included.
Relative humidity: 25 % to 75 %
Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar)
A climatic category LCT / UCT / 56 is applied, defined by the
lower category temperature (LCT), the upper category
temperature (UCT), and the duration of exposure in the
damp heat, steady state test (56 days).
The components are mounted for testing on printed circuit
boards in accordance with EN 60115-8, 2.4.2, unless
otherwise specified.
Temperature: 15 °C to 35 °C
TEST PROCEDURES AND REQUIREMENTS
IEC
EN
60068-2 (1)
60115-1
TEST
CLAUSE
METHOD
TEST
REQUIREMENTS
PERMISSIBLE CHANGE (R)
PROCEDURE
STABILITY
CLASS 0.05
OR BETTER
STABILITY
CLASS 0.1
OR BETTER
STABILITY
CLASS 0.25
OR BETTER
MMU 0102
100 to 100 k
43 to 147 k
22 to 332 k
MMA 0204
100 to 100 k
43 to 221 k
10 to 511 k
MMB 0207
100 to 270 k
43 to 510 k
15 to 1 M
Stability for product types:
4.5
-
Resistance
-
± 0.5 % R; ±0.25 % R; ± 0.1 % R
4.8
-
Temperature
coefficient
At (20/-55/20) °C and
(20/125/20) °C
± 25 ppm/K, ± 15 ppm/K
Endurance
at 70 °C:
Precision
operation mode
4.25.1
Endurance
at 70 °C:
Standard
operation mode
4.25.3
4.24
4.37
78 (Cab)
67 (Cy)
Revision: 16-Sep-16
U = P 70 x R or U = Umax.;
whichever is the less severe;
1.5 h on; 0.5 h off;
70 °C; 1000 h
± (0.05 % R + 5 m)
70 °C; 8000 h
±(0.1 % R + 5 m)
U = P 70 x R or U = Umax.;
whichever is the less severe;
1.5 h on; 0.5 h off;
70 °C; 1000 h
±(0.1 % R + 5 m)
70 °C; 8000 h
± (0.2 % R + 5 m)
Endurance at
upper category
temperature
85 °C; 1000 h
±(0.02 % R + 5 m) ± (0.05 % R + 5 m)
±(0.1 % R + 5 m)
125 °C; 1000 h
± (0.05 % R + 5 m)
±(0.15 % R + 5 m)
Damp heat,
steady state
(40 ± 2) °C; 56 days;
(93 ± 3) % RH
±(0.05 % R + 5 m)
±(0.1 % R + 5 m)
Damp heat,
steady state,
accelerated
(85 ± 2)C;
(85 ± 5) % RH;
U = 0.3 x P 70 x R
100 V and
U = 0.3 x Umax.;
(the smaller value is valid)
1000 h
± (0.15 % R + 5 m)
±(0.25 % R + 5 m)
±(0.1 % R + 5 m)
Document Number: 28714
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TEST PROCEDURES AND REQUIREMENTS
IEC
EN
60068-2 (1)
60115-1
TEST
CLAUSE
METHOD
TEST
STABILITY
CLASS 0.05
OR BETTER
STABILITY
CLASS 0.1
OR BETTER
STABILITY
CLASS 0.25
OR BETTER
MMU 0102
100 to 100 k
43 to 147 k
22 to 332 k
MMA 0204
100 to 100 k
43 to 221 k
10 to 511 k
MMB 0207
100 to 270 k
43 to 510 k
15 to 1 M
Stability for product types:
-
1 (Ab)
REQUIREMENTS
PERMISSIBLE CHANGE (R)
PROCEDURE
Cold
-55 °C; 2 h
±(0.02 % R + 5 m)
30 min at LCT;
30 min at UCT;
LCT = -10 °C;
UCT = 85 °C
4.19
14 (Na)
Rapid change
of temperature
1000 cycles
± (0.1 % R + 5 m)
± (0.1 % R + 5 m)
-
-
-
± (0.2 % R + 5 m)
LCT = -55 °C;
UCT = 125 °C
1000 cycles
Short time
overload:
Precision
operation mode
4.13
Short time
overload:
Standard
operation mode
U = 2.5 x P 70 x R or
U = 2 × Umax.;
whichever is the less severe;
5s
±(0.01 % R + 5 m) ± (0.02 % R + 5 m) ± (0.03 % R + 5 m)
± (0.05 % R + 5 m)
-
Severity no. 4:
Single pulse high
U = 10 x P 70 x R or
voltage overload:
U = 2 × Umax.;
Standard
whichever is the less severe;
operation mode
10 pulses 10 μs/700 μs
± (0.25 % R + 5 m)
4.39
-
Periodic electric
overload:
Standard
operation mode
15 x P 70 x R or
U = 2 x Umax.;
whichever is the less severe;
0.1 s on; 2.5 s off;
1000 cycles
±(0.5 % R + 5 m)
4.22
6 (Fc)
Vibration
-
Electrostatic
discharge
(Human Body
Model) (2)
4.27
4.38
4.17
58 (Td)
Revision: 16-Sep-16
Solderability
U=
Endurance by sweeping;
10 Hz to 2000 Hz;
±(0.01 % R + 5 m) ±(0.02 % R + 5 m) ± (0.03 % R + 5 m)
no resonance; amplitude
2
1.5 mm or 200 m/s ; 7.5 h
IEC 61340-3-1 (1);
3 pos. + 3 neg. discharges
MMU 0102: 1.5 kV
MMA 0204: 2 kV
MMB 0207: 4 kV
±(0.5 % R + 50 m)
Solder bath method;
SnPb40; non-activated flux;
(215 ± 3) °C; (3 ± 0.3) s
Good tinning ( 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 ( 95 % covered); no visible damage
Document Number: 28714
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TEST PROCEDURES AND REQUIREMENTS
IEC
EN
60068-2 (1)
60115-1
TEST
CLAUSE
METHOD
TEST
STABILITY
CLASS 0.05
OR BETTER
STABILITY
CLASS 0.1
OR BETTER
STABILITY
CLASS 0.25
OR BETTER
MMU 0102
100 to 100 k
43 to 147 k
22 to 332 k
MMA 0204
100 to 100 k
43 to 221 k
10 to 511 k
MMB 0207
100 to 270 k
43 to 510 k
15 to 1 M
Stability for product types:
4.18
58 (Td)
Resistance to
soldering heat
REQUIREMENTS
PERMISSIBLE CHANGE (R)
PROCEDURE
Solder bath method;
(260 ± 5) °C; (10 ± 1) s
Reflow method 2
(IR/forced gas convection);
(260 ± 5) °C; (10 ± 1) s
±(0.05 % R + 10 m)
±(0.01 % R + 5 m)
±(0.025 % R + 5 m)
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
4.32
21 (Ue3)
Shear (adhesion)
45 N
No visible damage
4.33
21 (Ue1)
Substrate
bending
Depth 2 mm, 3 times
4.7
-
Voltage proof
URMS = Uins; 60 s
4.35
-
Flammability
(1),
IEC 60695-11-5
needle flame test; 10 s
No visible damage, no open circuit in bent position
± (0.02 % R + 10 m) (3)
±(0.05 % R + 10 m) (3)
No flashover or breakdown
No burning after 30 s
Notes
(1) The quoted IEC standards are also released as EN standards with the same number and identical contents
(2) The pulse load stability of professional MELF resistors applies for precision resistors also. However, severe pulse loads are likely to
jeopardize precision stability requirements
(3) Special requirements apply to MICRO-MELF, MMU 0102:
• R < 100 ± (0.25 % R + 10 m)
• 100 R 221 k ± 0.1 % R
• 221 k < R: ± 0.25 % R
Revision: 16-Sep-16
Document Number: 28714
10
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
Vishay Beyschlag
DIMENSIONS
L
K
L1
D
D1
DIMENSIONS AND MASS
TYPE/SIZE
L
(mm)
D
(mm)
L1 min.
(mm)
MMU 0102
2.2 + 0/- 0.1
1.1 + 0/- 0.1
MMA 0204
3.6 + 0/- 0.2
1.4 + 0/- 0.1
MMB 0207
5.8 + 0/- 0.15
2.2 + 0/- 0.2
D1
(mm)
K
(mm)
MASS
(mg)
1.2
D + 0/- 0.1
0.4 ± 0.05
8
1.8
D + 0/- 0.15
0.75 ± 0.1
22
3.2
D + 0/- 0.2
1.1 ± 0.1
80
Note
• Color code marking is applied according to IEC 60062 (1) in five bands (E96 or E192 series). Each color 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 color band for tolerance is approximately
50 % wider than the other bands. An interrupted band between the 4th and 5th full band indicates the temperature coefficient (yellow = TC25,
orange = TC15)
PATTERN STYLES FOR MELF RESISTORS
X
G
Y
Z
RECOMMENDED SOLDER PAD DIMENSIONS
WAVE SOLDERING
REFLOW SOLDERING
TYPE/SIZE
G
(mm)
Y
(mm)
X
(mm)
Z
(mm)
G
(mm)
Y
(mm)
X
(mm)
Z
(mm)
MMU 0102
0.7
1.2
1.5
3.1
1.1
0.8
1.3
2.7
MMA 0204
1.5
1.5
1.8
4.5
1.7
1.2
1.6
4.1
MMB 0207
2.8
2.1
2.6
7.0
3.2
1.7
2.4
6.6
Notes
• The given solder pad dimensions reflect the considerations for board design and assembly as outlined e.g. in standards IEC 61188-5-x (1),
or in publication IPC-7351
(1)
The quoted IEC standards are also released as EN standards with the same number and identical contents
Revision: 16-Sep-16
Document Number: 28714
11
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
Vishay Beyschlag
HISTORICAL 12NC INFORMATION
Last Digit of 12NC Indicating Resistance Decade
• The resistors had a 12-digit numeric code starting with
2312.
RESISTANCE DECADE
LAST DIGIT
10 to 99.9
9
• The subsequent 4 digits indicated the resistor type,
specification and packaging; see the 12NC table.
100 to 999
1
1 k to 9.99 k
2
• The remaining 4 digits indicated the resistance value:
10 k to 99.9 k
3
- The first 3 digits indicated the resistance value.
100 k to 999 k
4
- The last digit indicated the resistance decade in
accordance with the 12NC Indicating Resistance
Decade table.
1 M to 9.99 M
5
Historical 12NC
The 12NC of a MMU 0102 resistor, value 47 k. and TCR 25
with ± 0.25 % tolerance, supplied in blister tape of 3000
units per reel is: 2312 166 64703.
HISTORICAL 12NC - Resistor type and packaging
2312 ... .....
DESCRIPTION
TYPE
TCR
± 25 ppm/K
MMU 0102
± 15 ppm/K
TYPE
TCR
± 25 ppm/K
MMA 0204
± 15 ppm/K
TYPE
MMB 0207
TCR
± 25 ppm/K
± 15 ppm/K
Revision: 16-Sep-16
BLISTER TAPE ON REEL
BULK CASE
TOL.
B1
1000
UNITS
BL
3000
UNITS
B0
10 000
UNITS
M8
8000
UNITS
± 0.25 %
171 6....
166 6....
176 6....
061 6....
± 0.1 %
171 7....
166 7....
176 7....
061 7....
± 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....
TOL.
B1
1000
UNITS
BL
3000
UNITS
B0
10 000
UNITS
M3
3000
UNITS
± 0.25 %
141 6....
156 6....
146 6....
041 6....
± 0.1 %
141 7....
156 7....
146 7....
041 7....
± 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....
TOL.
B1
1000
UNITS
B2
2000
UNITS
B7
7000
UNITS
± 0.25 %
181 6....
196 6....
186 6....
± 0.1 %
181 7....
196 7....
186 7....
± 0.1 %
182 7....
197 7....
187 7....
Document Number: 28714
12
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
Legal Disclaimer Notice
www.vishay.com
Vishay
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Revision: 01-Jan-2021
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Document Number: 91000