Y1169715R000A0L - Vishay Presicion Group

SMR1D/SMR3D

Vishay Foil Resistors

High Precision Bulk Metal® Foil Molded Surface Mount Resistor

with TCR down to ± 2 ppm/°C, Flexible Terminations,

and Load Life Stability of ± 0.005 % (50 ppm)

Document Number: 63102 For any questions, contact: foil@vishay.com www.vishay.com

Revision: 14-Nov-07 1

Any value at any tolerance available within resistance range

INTRODUCTION

The SMRxD is a precision molded surface mountable

resistor offering all the elements of precision; including low

TCR, tight tolerance, long term stability, low noise, low

thermal EMF, and non-measurable voltage coefficient. It

utilizes the Bulk Metal® Foil technology for the resistive

element with its inherent low and predictable TCR and long

term stability. This surface mountable product affords similar

performance to the time tested S series molded through-hole

product.

The flexible terminations of this product also reduce

stress transference from the PCB to the resistor.

Voltage division with tight tracking < 3 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. For non-standard

technical requirements and special applications, please

Note

1. Tighter performances are available

FEATURES

•Temperature coefficient of resistance (TCR):

± 2 ppm°C typical (- 55 °C to + 125 °C,

+ 25 °C ref.)

•Tolerance: to ± 0.01 %

•Flexible terminations ensure minimal stress

transference from the PCB due to a difference

in thermal coefficient of expansions (TCE)

•Electrostatic discharge (ESD) above 25 000 V

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

•Resistance range: 5 Ω to 80 kΩ (for higher and lower

values, please contact us)

•Power rating: 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 finishes available: lead (Pb)-free

tin/lead alloy

•Matched sets with TCR tracking are available upon request

•Any value available within resistance range (e.g. 1K234)

•Prototype samples available from 48 h. For more

information, please contact foil@vishay.com

•

For better performances please review SMRxDZ datasheet

APPLICATIONS

•Military, airborne and space

•Precision amplifiers

•High precision instrumentation

•Medical

•Automatic test equipment (ATE)

•Industrial

•Audio (high end stereo

equipment)

•EB application

•Pulse application

•Measurement instrumentation

* Pb containing terminations are not RoHS compliant, exemptions may apply

TABLE 1 - THE SMRxD SERIES IS LISTED

IN THE FOLLOWING DSCC

SPECIFICATIONS

MODEL DSCC MIL SPEC

SMR1D 06020 MIL-PRF-55182

SMR3D 06021 MIL-PRF-55182

TABLE 2 - TOLERANCE AND TCR VERSUS

RESISTANCE VALUE

(- 55 °C to + 125 °C, + 25 °C Ref.)

VALUE STANDARD

TOLERANCE1)

TYPICAL TCR AND

MAX. SPREAD1)

(ppm/°C)

50 Ω to 80 kΩ± 0.01 % ± 2 ± 3

20 Ω to < 50 Ω± 0.02 % ± 2 ± 4

10 Ω to < 20 Ω± 0.05 % ± 2 ± 6

5 Ω to < 10 Ω± 0.1 % ± 2 ± 8

FIGURE 1 - POWER DERATING CURVE

Available

Pb-free

RoHS*

COMPLIANT

Vin Vout

SMRxD

200

175

150

125

100

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

Ambient Temperature (°C)

Percent of Rated Power (%)

- 55 °C + 70 °C

SMR1D/SMR3D

Vishay Foil Resistors

High Precision Bulk Metal

Foil Molded Surface Mount

Resistor with TCR down to ± 2 ppm/°C, Flexible

Terminations, and Load Life Stability of ± 0.005 % (50 ppm)

www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63102

2Revision: 14-Nov-07

Note

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

TABLE 3 - PERFORMANCE SPECIFICATIONS

TEST CONDITIONS MAXIMUM LIMIT1)

SMR1D SMR3D SMR1D SMR3D

Resistance Range 5 Ω to 33 kΩ5 Ω to 80 kΩ

Rated Power

5 Ω to 10 kΩ

0.250 W at 70 °C

0.125 W at 125 °C

10 kΩ to 33 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 80 kΩ

0.4 W at 70 °C

0.2 W at 125 °C

see figure 1

Maximum Working Voltage 73 V 180 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; 30 min; 5 cycles ± 0.01 % (100 ppm)

Short Time Overload 6.25 x rated power; 5 s ± 0.01 % (100 ppm)

Low Temperature Storage 24 h at - 65 °C ± 0.01 % (100 ppm)

Low Temperature Operation 45 min, rated power at - 65 °C ± 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

Resistance to

Soldering Heat (%) 260 °C; 10 s ± 0.02 %, ± 0.01 % typical

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

Shock 100 G; sawtooth ± 0.01 % (100 ppm)

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

Load Life Stability (2000 h) 0.04 W at + 70 °C

0.25 W at + 70 °C

0.125 W at + 125 °C

0.1 W at + 70 °C

0.6 W at + 70 °C

0.3 W at + 125 °C

Ty p i c a l

0.005 %

0.02 %

Ty p i ca l

0.005 %

0.015 %

High Temperature Exposure 175 °C; no load 2000 h ± 0.05 % (500 ppm)

Weight 0.1143 g 0.244 g

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

Document Number: 63102 For any questions, contact: foil@vishay.com www.vishay.com

Revision: 14-Nov-07 3

SMR1D/SMR3D

High Precision Bulk Metal

Foil Molded Surface Mount

Resistor with TCR down to ± 2 ppm/°C, Flexible

Terminations, and Load Life Stability of ± 0.005 % (50 ppm)

Vishay Foil Resistors

FIGURE 2 - DIMENSIONS in inches (millimeters)

MODEL L W H P TW TH (minimum)

SMR1D 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)

SMR3D 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

LEAD (Pb)-FREE INDICATOR

VALUE (5 DIGITS)

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

MODEL METHOD A

MIN.

REF

± 0.04 (± 1.02)

REF

SMR1D Reflow 0.110

(2.79)

0.106

(2.69)

0.124

(3.15)

0.337

(8.55)

0.050

(1.27)

SMR3D 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)

Mutual Inductance

Reduction due

to Change in

Current Direction

Current Path

Before Trimming

Trimming Process

Removes this Material

from Shorting Strip Area

Changing Current Path

and Increasing

Resistance

NOTE: Foil shown in black, etched spaces in white

Current Path

After Trimming

Interloop Capacitance

Reduction in Series

FIGURE 5 - TYPICAL TCR CURVE

(For more details, see table 2)

Note: The TCR values for < 80 Ω are influenced by the

termination composition and the result in deviation from this curve

- 50 - 25 0 + 25 + 50 + 75 + 100 + 125

- 55

± 2 ppm/°C

(+ 25 °C Reference)

+ 150

+ 100

+ 50

- 50

- 100

- 150

- 200

ΔR

(ppm)

Ambient Tem

erature

(

°C

)

SMR1D/SMR3D

Vishay Foil Resistors

High Precision Bulk Metal

Foil Molded Surface Mount

Resistor with TCR down to ± 2 ppm/°C, Flexible

Terminations, and Load Life Stability of ± 0.005 % (50 ppm)

www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63102

4Revision: 14-Nov-07

Note

* For non-standard requests, please contact application engineering.

TABLE 4 - GLOBAL PART NUMBER INFORMATION

NEW GLOBAL PART NUMBER: Y112110K0000T9R (preferred part number format)

DENOTES PRECISION VALUE AER*

YR = Ω

K = kΩ

0 = standard

9 = lead (Pb)-free

1 - 999 = Custom

PRODUCT CODE RESISTANCE TOLERANCE PACKAGING

1121 = SMR1D

1169 = SMR3D

T= ± 0.01 %

Q= ± 0.02 %

A= ± 0.05 %

B= ± 0.1 %

C= ± 0.25 %

D= ± 0.5 %

F= ± 1.0 %

L= bulk pack

R= tape and reel

FOR EXAMPLE: ABOVE GLOBAL ORDER Y1121 10K0000 T 9 R:

TYPE: SMR1D

VALUE: 10.0 kΩ

ABSOLUTE TOLERANCE: ± 0.01 %

TERMINATION: lead (Pb)-free

PACKAGING: tape and reel

HISTORICAL PART NUMBER: SMR1D 10K000 TCR2 T S T (will continue to be used)

SMR1D 10K000 TCR2 T S T

MODEL OHMIC VALUE TCR

CHARACTERISTIC

RESISTANCE

TOLERANCE TERMINATION PACKAGING

SMR1D

SMR3D

10.0 kΩT= ± 0.01 %

Q= ± 0.02 %

A= ± 0.05 %

B= ± 0.1 %

C= ± 0.25 %

D= ± 0.5 %

F= ± 1.0 %

S= lead (Pb)-free

B= tin/lead

B= bulk pack

T= tape and reel

1211 K000Y1 0 R0 T 9

Document Number: 91000 www.vishay.com

Revision: 18-Jul-08 1

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