303140-100R-D-B-L - Vishay Presicion Group

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

303139, 303140

Vishay Foil Resistors

Document Number: 63165 For any questions, contact: foil@vishaypg.com www.foilresistors.com

Revision: 27-Jul-10 1

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.

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)

“ΔR 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) up to 25 000 V

•Load life stability: ± 0.005 % (70 °C, 2000 h at rated power)

•Resistance range: 5 Ω to 40 kΩ

•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 typical

•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@vishaypg.com

TABLE 1 - TOLERANCE AND TCR VS.

RESISTANCE VALUE

(- 55 °C to + 125 °C, + 25 °C ref.)

VALUE ABSOLUTE

TOLERANCE

TYPICAL TCR AND

MAX. SPREAD

(ppm/°C)

250 Ω to 40 kΩ± 0.02 % ± 0.2 ± 1.8

50 Ω to < 250 Ω± 0.05 % ± 0.2 ± 1.8

20 Ω to < 50 Ω± 0.1 % ± 0.2 ± 2.8

10 Ω to < 20 Ω± 0.2 % ± 0.2 ± 4.8

5 Ω to < 10 Ω± 0.5 % ± 0.2 ± 6.8

FIGURE 1 - POWER DERATING CURVE

200

175

150

125

100

- 75 - 25 + 25 + 75 + 125 + 175

Ambient Temperature (°C)

Rated Power (%)

- 55 °C + 70 °C

303139, 303140

Vishay Foil Resistors

www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63165

2Revision: 27-Jul-10

Note

(1) As shown + 0.01 Ω to allow for measurement error at low values

TABLE 2 - PERFORMANCE SPECIFICATIONS

TEST CONDITIONS MAXIMUM LIMIT (1)

303139 303140 303139 303140

Resistance Range 5 Ω to 14 kΩ5 Ω to 40 kΩ

Power Rating

5 Ω to 10 kΩ

0.250 W at 70 °C

0.125 W at 125 °C

10 kΩ to 14 kΩ

0.160 W at 70 °C

0.08 W at 125 °C

5 Ω to 30 kΩ

0.6 W at 70 °C

0.3 W at 125 °C

30 kΩ to 40 kΩ

0.4 W at 70 °C

0.2 W at 125 °C

See figure 1

Maximum Working Voltage 47 V 127 V

Maximum Operating

Temperature + 175 °C (see figure 1)

Working Temperature Range - 55 °C to + 125 °C (MIL range)

Thermal Shock - 65 °C to + 150 °C; 25 cycles

0.02 % for values higher

than 100 Ω

0.03 % for values between

5 Ω to 100 Ω

Short Time Overload 6.25 x rated power (at + 125 °C); 5 s,

not to exceed 70.5 V for 303139, 190 V for 303140 ± 0.01 % (100 ppm)

Low Temperature Operation - 65 °C, 24 h (no load): 45 min at rated power ± 0.01 % (100 ppm)

Dielectric Withstanding

Voltage Atmospheric pressure; AC 200 V; 1 min ± 0.01 % (100 ppm)

Insulation Resistance (MΩ)DC 100 V; 1 min over 10 000 MΩ

Resistance to

Soldering Heat (%) 260 °C; 10 s ± 0.03 %

Moisture Resistance + 65 °C to - 10 °C; 90 % to 98 % RH; rated power; 240 h ± 0.02 % (200 ppm)

Shock 100 G; sawtooth; axes Y, Z; 10 shocks per each axis ± 0.01 % (100 ppm)

Vibration, High Frequency 10 Hz ~ 2000 Hz ~ 10 Hz; 20 G; axes Y, Z; 4 h in each axis ± 0.01 % (100 ppm)

Load Life Stability (2000 h) 125 °C, rated power ± 0.05 % (500 ppm)

High Temperature Exposure 175 °C; no load 2000 h ± 0.1 % (1000 ppm)

Weight 0.1143 g 0.244 g

Packaging Bulk (loose) or tape and reel, per EIA-481-1

303139, 303140

Vishay Foil Resistors

Document Number: 63165 For any questions, contact: foil@vishaypg.com www.foilresistors.com

Revision: 27-Jul-10 3

Notes

• For more details, see table 1

• The TCR values for < 80 Ω are influenced by the termination

composition and the result in deviation from this curve

FIGURE 2 - DIMENSIONS in inches (millimeters)

MODEL L W H P TW TH (minimum)

303139 0.236 ± 0.012

(5.99 ± 0.30)

0.126 ± 0.012

(3.20 ± 0.30)

0.098 ± 0.012

(2.49 ± 0.30)

0.051 ± 0.012

(1.30 ± 0.30)

0.087 ± 0.004

(2.21 ± 0.10)

0.039

(0.99)

303140 0.287 ± 0.012

(7.29 ± 0.30)

0.170 ± 0.012

(4.32 ± 0.30)

0.110 ± 0.012

(2.79 ± 0.30)

0.051 ± 0.012

(1.30 ± 0.30)

0.095 ± 0.004

(2.41 ± 0.10)

0.039

(0.99)

TH Minimum

Side View

Stand Off

Bottom View

End View

Top View

100R0T

(DATE CODE)

TOLERANCE

Z-FOIL

INDICATOR

VALUE (5 DIGITS)

FIGURE 3 - RECOMMENDED MOUNTING PAD GEOMETRIES in inches (millimeters)

MODEL METHOD A

MIN.

REF

± 0.04 (± 1.02)

REF

303139 Reflow 0.110

(2.79)

0.106

(2.69)

0.124

(3.15)

0.337

(8.55)

0.050

(1.27)

303140 Reflow 0.118

(3.00)

0.106

(2.69)

0.175

(4.45)

0.388

(9.86)

0.050

(1.27)

Per IPC-SM-782 Rev A

Reflow Solder Pads

FIGURE 4 - TRIMMING TO VALUES

(Conceptual Illustration)

Note: Foil shown in black, etched spaces in white

Mutual

Inductance

Reduction due

to Opposing

Current in

Adjacent Lines

Current Path

Before Trimming

Interloop

Capacitance

Reduction

in Series

Trimming Process

Removes this Material

from Shorting Strip Area

Changing Current Path

and Increasing Resistance

Current Path

After Trimming

FIGURE 5 - TYPICAL RESISTANCE/

TEMPERATURE CURVE (Z-FOIL)

+ 500

+ 200

+ 100

- 100

- 200

- 300

- 500

- 55 - 25 + 25 + 60 + 75 + 100 + 125

Ambient Temperature (°C)

ΔR

(ppm)

0.05 ppm/°C

- 0.1 ppm/°C 0.1 ppm/°C

0.14 ppm/°C

0.2 ppm/°C

- 0.16 ppm/°C

- 400

+ 300

+ 400

TCR Chord Slopes for Different Temperature Ranges

303139, 303140

Vishay Foil Resistors

www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63165

4Revision: 27-Jul-10

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 ΔR limits: 0.01 Ω.

TABLE 3 - EEE-INST-002 (TABLE 2A FILM/FOIL, LEVEL 1) 100 % TESTS/INSPECTIONS

Pre-cap Visual Inspection Performed in production flow on welded chip on strip

RC Record In tolerance

Thermal Shock 25 x (- 65 °C to + 150 °C)

Short Time Overload 6.25 x rated power (at + 125 °C), 5 s, not to exceed 70.5 V for 303139, 190 V for 303140

RC Record In tolerance, ΔR = 0.02 % for values higher than 100 Ω, ΔR = 0.03 % for values between 5 Ω to 100 Ω

Power Conditioning Rated power, 100 h, + 125 °C

Component Linearity Test

RC Record In tolerance ΔR ≤ 200 ppm for R > 100 Ω, ΔR ≤ 500 ppm for R ≤ 100 Ω

Final Inspection PDA 3 % on ΔR > 0.05 % only

Visual Inspection Materials, design, marking, etc.

Mechanical Inspection Physical dimensions sample size: 3 units. For a min. of one failure - 100 % inspection

TABLE 4 - EEE-INST-002 (TABLE 3A FILM/FOIL, LEVEL 1) DESTRUCTIVE TESTS

Group 2

Sample size: 3(0)

Solderability MIL-STD-202, method 208

Resistance to solvents MIL-STD-202, method 215

Group 3

Sample size: 10(0)

Thermal shock 25 x (- 65 °C to + 150 °C)

MIL-STD-202, method 107 ΔR = 0.02 % for values higher than 100 Ω

ΔR = 0.03 % for values between 5 Ω to 100 Ω

303139, 303140

Values TCR limits

100 Ω to 40 kΩ± 2 ppm/°C

20 Ω to < 100 Ω± 3 ppm/°C

10 Ω to < 20 Ω± 5 ppm/°C

5 Ω to < 10 Ω± 7 ppm/°C

TCR - mounted on FR4 Temperature range: - 55 °C/+ 25 °C/+ 125 °C

Low temperature storage - 65 °C no load dwell for 24 h ± 4 h

+ 25 °C ambient no load dwell for 2 h to 8 h

Low temperature operation

ΔR = 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

Short time overload

ΔR = 0.01 %

6.25 x rated power (at + 125 °C), not to exceed 70.5 V for 303139, 190 V for 303140

303139, 303140

Vishay Foil Resistors

Document Number: 63165 For any questions, contact: foil@vishaypg.com www.foilresistors.com

Revision: 27-Jul-10 5

Note

• The sample units of table 4 should be randomly selected from lots which successfully passed the table 3 tests

Group 4

Sample size: 9(0)

DWV ΔR = 0.01 %

MIL-STD-202, method 301 Atmospheric pressure, 200 VAC, 1 min

Insulation resistance 100 VDC

MIL-STD-202, method 302 IR ≥ 104 MΩ

Resistance to soldering

heat - mounted on FR4 ΔR = 0.03 %

MIL-STD-202, method 210

condition B 260 °C, 10 s

Moisture resistance ΔR = 0.02 %

MIL-STD-202, method 106

DWV, at 200 VAC, 1 min

atmospheric pressure ΔR = 0.01 %

Insulation resistance,

at 100 VDC IR ≥ 100 MΩ

Group 5

Sample size: 9(0) - mounted on FR4

Shock ΔR = 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 ΔR = 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

Group 6

Sample size: 12(0) - mounted on FR4

Life ΔR = 0.05 %

MIL-STD-202, method 108

1.5 h on, 0.5 h off, 125 °C, rated power (at + 125 °C), 2000 h

Group 8

Sample Size: 5(0) - not mounted

Voltage coefficient 5 ppm/V

MIL-PRF-55182 and

MIL-STD-202, method 309

Working voltage

Resistance range > 1 K

Group 9

Sample size: 5(0)

High temperature exposure ΔR = 0.1 %

+ 175 °C, 2000 h, no load

Group

10 Thermal outgassing Contact Vishay application engineering for review

TABLE 4 - EEE-INST-002 (TABLE 3A FILM/FOIL, LEVEL 1) DESTRUCTIVE TESTS

303139, 303140

Vishay Foil Resistors

www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63165

6Revision: 27-Jul-10

PART NUMBER IDENTIFICATION

Model # 303139 303140

Base Model SMR1DZ SMR3DZ

Value Range (Space Applications) 5 Ω to 14 kΩ5 Ω to 40 kΩ

Part Number:

{Model} - {Value} - {Tolerance} - {Termination} - {Packaging}

Absolute Tolerance Code Termination Code Packaging Code

0.02 % QTin/lead BBulk L

0.05 % ATape and reel T

0.1 % B

0.2 % E

0.5 % D

Example: 303139 - 8K0225 - QBT

303139, 8.0225 kΩ, 0.02 %, tin/lead termination, tape and reel packaging

Vishay Precision Group

Document No.: 63999

Revision: 27-Apr-11

www.vishaypg.com

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Document No.: 63999

Revision: 27-Apr-11