303139, 303140
Models # 303139 and 303140 - Molded Surface Mount Space and Military
Grade Resistors SMRxDZ with Screen/Test Flow in Compliance with
EEE-INST-002, (Tables 2A and 3A, Film/Foil, Level 1) and MIL-PRF-55182
FEATURES
Temperature coefficient of resistance (TCR):
± 0.2 ppm°C typical (- 55 °C to + 125 °C, + 25 °C ref.)
Tolerance: to ± 0.02 %
Power coefficient of resistance (PCR)
“R due to self heating”: 5 ppm at rated power
Flexible terminations ensure minimal stress transference
from the PCB due to a difference in thermal coefficient of
expansions (TCE)
Electrostatic discharge (ESD): at least to 25 kV
Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)
Resistance range: 5
to 40 k
Vishay Foil resistors are not restricted to standard values;
specific “as requested” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Maximum power: to 600 mW at 70 °C
Non-inductive, non-capacitive design
Current noise: - 40 dB
Voltage coefficient: < 0.1 ppm/V
Non-inductive: < 0.08 µH
Non hot spot design
Terminal finish: tin/lead alloy
Matched sets with TCR tracking are available upon
request
For oriented performances please contact us
For prototype units, append a “U” to the model number
(example: 303139U). These units pass all tests per table 3
(page 4) with no destructive qualification testing required
(table 4, page 4). For more information, please contact
foil@vpgsensors.com
INTRODUCTION
The 303139, 303140 are ultra high precision molded surface
mountable resistors offering all the elements of precision;
including low TCR, tight tolerance, long term stability, low
noise, low thermal EMF, and non-measurable voltage
coefficient. One of the important parameters influencing
stability is the temperature coefficient of resistance (TCR).
Although the TCR of foil resistors is considered extremely
low, this characteristic has been further refined over the
years. These resistors utilize ultra high precision Bulk Metal
®
Z-Foil.
The Z-Foil technology provides a significant reduction of
the resistive element’s sensitivity to ambient temperature
variations (TCR) and to self heating when power is applied
(power coefficient).
Voltage division with tight tracking < 2 ppm/°C can be
achieved with 2
randomly
selected units even with a large
ratio between the two values.
Our application engineering department is available to
advise and make recommendations.
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
(- 55 °C to + 125 °C, + 25 °C ref.)
VALUE
250
to 40 k
50
to < 250
20
to < 50
10
to < 20
5
to < 10
ABSOLUTE
TOLERANCE
± 0.02 %
± 0.05 %
± 0.1 %
± 0.2 %
± 0.5 %
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
± 0.2 ± 1.8
± 0.2 ± 1.8
± 0.2 ± 2.8
± 0.2 ± 4.8
± 0.2 ± 6.8
FIGURE 1 - POWER DERATING CURVE
200
175
Rated Power (%)
150
125
100
75
50
25
0
- 75
- 25
+ 25
+ 75
+ 125
Ambient Temperature (°C)
+ 175
- 55 °C
+ 70 °C
Document Number: 63165
Revision: 27-May-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1
303139, 303140
TABLE 2 - PERFORMANCE SPECIFICATIONS
TEST
303139
Resistance Range
5
to 14 k
5
to 10 k
10 k to 14 k
0.250 W at 70 °C 0.160 W at 70 °C
0.125 W at 125 °C 0.08 W at 125 °C
CONDITIONS
303140
5
to 40 k
5
to 30 k
0.6 W at 70 °C
0.3 W at 125 °C
30 k to 40 k
0.4 W at 70 °C
0.2 W at 125 °C
MAXIMUM LIMIT
(1)
303139
303140
Power Rating
See figure 1
Maximum Working Voltage
Maximum Operating
Temperature
Working Temperature Range
+ 175 °C (see figure 1)
- 55 °C to + 125 °C (MIL range)
47 V
127 V
Thermal Shock
- 65 °C to + 150 °C; 25 cycles
0.02 % for values higher
than 100
0.03 % for values between
5
to 100
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
over 10 000 M
± 0.03 %
± 0.03 % (300 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.05 % (500 ppm)
± 0.1 % (1000 ppm)
0.1143 g
0.244 g
Short Time Overload
Low Temperature Operation
Dielectric Withstanding
Voltage
Insulation Resistance (M)
Resistance to
Soldering Heat (%)
Moisture Resistance
Shock
Vibration, High Frequency
Load Life Stability (2000 h)
High Temperature Exposure
Weight
Packaging
6.25 x rated power (at + 125 °C); 5 s,
not to exceed 70.5 V for 303139, 190 V for 303140
- 65 °C, 24 h (no load): 45 min at rated power
Atmospheric pressure; AC 200 V; 1 min
DC 100 V; 1 min
260 °C; 10 s
+ 65 °C to - 10 °C; 90 % to 98 % RH; rated power; 240 h
100 G; sawtooth; axes Y, Z; 10 shocks per each axis
10 Hz ~ 2000 Hz ~ 10 Hz; 20 G; axes Y, Z; 4 h in each axis
125 °C, rated power
175 °C; no load 2000 h
Bulk (loose) or tape and reel, per EIA-481-1
Note
(1)
As shown + 0.01
to allow for measurement error at low values
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Document Number: 63165
Revision: 27-May-15
303139, 303140
FIGURE 2 - DIMENSIONS
in inches (millimeters)
Side View
L
TH Minimum
VALUE (5 DIGITS)
Top View
TOLERANCE
Z-FOIL
INDICATOR
Stand Off
P
P
End View
H
100R0T
E
(DATE CODE)
z
W
Bottom View
TW
MODEL
303139
303140
L
0.236 ± 0.012
(5.99 ± 0.30)
0.287 ± 0.012
(7.29 ± 0.30)
W
0.126 ± 0.012
(3.20 ± 0.30)
0.170 ± 0.012
(4.32 ± 0.30)
H
0.098 ± 0.012
(2.49 ± 0.30)
0.110 ± 0.012
(2.79 ± 0.30)
P
0.051 ± 0.012
(1.30 ± 0.30)
0.051 ± 0.012
(1.30 ± 0.30)
TW
0.087 ± 0.004
(2.21 ± 0.10)
0.095 ± 0.004
(2.41 ± 0.10)
TH (minimum)
0.039
(0.99)
0.039
(0.99)
FIGURE 3 - RECOMMENDED MOUNTING PAD GEOMETRIES
in inches (millimeters)
Reflow Solder Pads
D
B
C
E
A
MODEL
303139
303140
Per IPC-SM-782 Rev A
METHOD
Reflow
Reflow
A
MIN.
0.110
(2.79)
0.118
(3.00)
B
REF
0.106
(2.69)
0.106
(2.69)
C
REF
0.124
(3.15)
0.175
(4.45)
D
± 0.04 (± 1.02)
0.337
(8.55)
0.388
(9.86)
E
REF
0.050
(1.27)
0.050
(1.27)
FIGURE 4 - TRIMMING TO VALUES
(Conceptual Illustration)
Interloop
Capacitance
Reduction
in Series
Mutual
Inductance
Reduction
due to Change
in Current
Direction
Current Path
Before
Trimming
Current Path After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
FIGURE 5 - TYPICAL RESISTANCE/
TEMPERATURE CURVE (Z-FOIL)
TCR Chord Slopes for Different Temperature Ranges
+ 500
+ 400
+ 300
+ 200
+ 100
ΔR
0
R
(ppm)
- 100
- 200
- 300
- 400
- 500
- 0.16 ppm/°C
- 55
- 25
0
+ 25
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
+ 60 + 75
+ 100 + 125
Foil
shown
in
black, etched spaces
in
white
Note
To acquire a
precision resistance value,
the
Bulk
Metal
®
Foil
chip
is trimmed
by selectively removing built-in “shorting bars.”
To increase the
resistance
in
known
increments, marked areas
are
cut, producing progressively smaller
increases in
resistance.
This method
reduces
the
effect of “hot spots”
and improves the
long-term stability of
the Vishay Foil
resistors.
Document Number: 63165
Revision: 27-May-15
Ambient Temperature (°C)
Notes
• For more details, see table 1
• The TCR values for < 80
are influenced by the termination
composition and the result in deviation from this curve
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For any questions, contact
foil@vpgsensors.com
303139, 303140
NOTES
For prototype units, append a “U” to the model number (example: 303139U). These units have all of the table 2A 100 % tests
performed, with no destructive qualification testing required.
Measurement error allowed for
R
limits: 0.01
TABLE 3 - EEE-INST-002 (TABLE 2A FILM/FOIL, LEVEL 1) 100 % TESTS/INSPECTIONS
Pre-cap Visual Inspection
RC Record
Thermal Shock
Short Time Overload
RC Record
Power Conditioning
Component Linearity Test
RC Record
Final Inspection
Visual Inspection
Mechanical Inspection
In tolerance
R
200 ppm for R > 100
, R
500 ppm for R
100
PDA 3 % on
R
> 0.05 % only
Materials, design, marking, etc.
Physical dimensions sample size: 3 units. For a min. of one failure - 100 % inspection
Performed in production flow on welded chip on strip
In tolerance
25 x (- 65 °C to + 150 °C)
6.25 x rated power (at + 125 °C), 5 s, not to exceed 70.5 V for 303139, 190 V for 303140
In tolerance,
R
= 0.02 % for values higher than 100
, R
= 0.03 % for values between 5
to 100
Rated power, 100 h, + 125 °C
TABLE 4 - EEE-INST-002 (TABLE 3A FILM/FOIL, LEVEL 1) DESTRUCTIVE TESTS
Sample size: 3(0)
Group 2
Solderability
Resistance to solvents
Sample size: 10(0)
Thermal shock
MIL-STD-202, method 107
25 x (- 65 °C to + 150 °C)
R
= 0.02 % for values higher than 100
R
= 0.03 % for values between 5
to 100
303139, 303140
Values
100
to 40 k
20
to < 100
Group 3
TCR - mounted on FR4
Low temperature storage
Low temperature operation
Short time overload
10
to < 20
5
to < 10
Temperature range: - 55 °C/+ 25 °C/+ 125 °C
- 65 °C no load dwell for 24 h ± 4 h
+ 25 °C ambient no load dwell for 2 h to 8 h
R
= 0.01 %
- 65 °C no load dwell for 1 h
rated power (at + 125 °C) for 45 min
+ 25 °C ambient no load dwell for 24 h ± 4 h
R
= 0.01 %
6.25 x rated power (at + 125 °C), not to exceed 70.5 V for 303139, 190 V for 303140
TCR limits
± 2 ppm/°C
± 3 ppm/°C
± 5 ppm/°C
± 7 ppm/°C
MIL-STD-202, method 208
MIL-STD-202, method 215
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4
For any questions, contact
foil@vpgsensors.com
Document Number: 63165
Revision: 27-May-15
303139, 303140
TABLE 4 - EEE-INST-002 (TABLE 3A FILM/FOIL, LEVEL 1) DESTRUCTIVE TESTS
Sample size: 9(0)
DWV
MIL-STD-202, method 301
Insulation resistance
MIL-STD-202, method 302
Resistance to soldering
heat - mounted on FR4
MIL-STD-202, method 210
condition B
Moisture resistance
MIL-STD-202, method 106
DWV, at 200 V
AC
, 1 min
atmospheric pressure
Insulation resistance,
at 100 V
DC
R
= 0.01 %
IR
100 M
R
= 0.01 %
Atmospheric pressure, 200 V
AC
, 1 min
100 V
DC
IR
10
4
M
R
= 0.03 %
260 °C, 10 s
R
= 0.03 %
Group 4
Sample size: 9(0) - mounted on FR4
Shock
Group 5
R
= 0.01 %
MIL-PRF-55182 and MIL-STD-202, method 213, condition I
10 shocks in each of two mutually perpendicular planes (Y, Z) 100 G, 6 ms, sawtooth
Vibration
R
= 0.01 %
MIL-PRF-55182 and MIL-STD-202, method 204, condition D
10 Hz - 2000 Hz - 10 Hz, 20 G, planes Y, Z
In each of two mutually perpendicular planes (Y, Z), 20 G, 4 h in each plane
Sample size: 12(0) - mounted on FR4
Group 6
Life
MIL-STD-202, method 108
R
= 0.05 %
1.5 h on, 0.5 h off, 125 °C, rated power (at + 125 °C), 2000 h
Sample Size: 5(0) - not mounted
Group 8
Voltage coefficient
MIL-PRF-55182 and
MIL-STD-202, method 309
Sample size: 5(0)
Group 9
High temperature exposure
Group
10
Thermal outgassing
R
= 0.1 %
+ 175 °C, 2000 h, no load
Contact Vishay Foil Resistors application engineering for review
5 ppm/V
Working voltage
Resistance range > 1 K
Note
• The sample units of table 4 should be randomly selected from lots which successfully passed the table 3 tests
Document Number: 63165
Revision: 27-May-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
5
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