VISHAY DSM Technical data

DSM

Vishay Foil Resistors

High Precision Bulk Metal® Foil Surface Mount Voltage Divider, TCR Tracking of < 0.5 ppm/°C, Tolerance Match of 0.01 % and Stability of ± 0.005 % (50 ppm)

FEATURES

•

Temperature Coefficient of Resistance (TCR):

Absolute: ± 2 ppm/°C typical

Pb-free

(- 55 °C to + 125 °C, + 25 °C Ref.)

Available

RoHS*

Tracking: 0.5 ppm/°C typical

• Tolerance: Absolute: ± 0.02 %; Match: 0.01 %

COMPLIANT

Any value at any ratio available within resistance range

T

• Power Rating at 70 °C: Entire Package: 0.1 W

INTRODUCTION

Each Resistor: 0.05 W

• Ratio Stability: 0.005 % (0.05 W at 70 °C, 2000 hours)

Bulk Metal® Foil Technology out-performs all other resistor

• Resistance Range: 100 Ω to 20 kΩ per resistor

technologies available today for applications that require High

• Large Variety of Resistance Ratios: 1:200

Precision and High Stability.

• Electrostatic Discharge (ESD) above 25 000 Volts

This technology has been invented, patented and pioneered

• Short Time Overload ≤ 0.005 %

by Vishay. Products based on this technology are the most

suitable for a wide range of appilcations.

• Non Inductive, Non Capacitive Design

BMF technology allows to produce customer oriented

• Rise Time: 1.0 ns without ringing

products designed to satisfy challenging and specific

• Current Noise: < - 40 dB

technical requirements. Model DSM offers Low TCR (both

• Voltage Coefficient:ODUC< 0.1 ppm/V

absolute

and

tracking), Excellent

Load

Life Stability, Tight

• Non Inductive: < 0.08 µH

tolerance, Excellent Ratio Stability, and Low Current Noise,

• Non Hot Spot Design

all in one package.

The DSM surface mount divider provides a matched pair of

•

R

Terminals: silver coated copper alloy

Bulk Metal® Foil Resistors in a small epoxy molded package.

• Any value available within resistance range (e.g. 1K2345)

The electrical

specification of this integrated construction

P

samples available from

48

hours. For more

offers improved performance and better real estate utilization

•

Prototype

information, please contact [e-mail]

over discrete resistors and matched pairs.

• For better

performances, please

see DSMZ datasheet

Our Application Engineering Department is available to

(Z-Foil)

advise and make recommendations. For non-standard

technical requirements and special applications, please

APPLICATIONS

contact us.

R2

•

Instrumentation amplifiers

•

Bridge networks

R1

FIGURE 1 - SCHEMATIC

Vin

-

• Differential amplifiers

Vout

+

• Ratio arms in bridge circuits

DSM

• Medical and test equipment

R1

R2

• Military

OPTION 1

OPTION 2

Airborne etc.

SAME OHMIC VALUE,

RESISTOR PAIR

•

SAME ABSOLUTE TOLERANCE

R1/R2 - DIFFERENT VALUES

TABLE 1 - MODEL DSM SPECIFICATIONS

ABSOLUTE TCR

RESISTANCE

TOLERANCE

MODEL

(- 55 °C TO + 125 °C, + 25 °C REF.)

TCR TRACKING

RATIO

TYPICAL + MAX. SPREAD

ABSOLUTE

MATCH

R1/R2 = 1

1.0 ppm/°C

± 0.02 %

0.01 %

MPROVED

I

± 2 ppm/°C ± 3 ppm/°C

1 < R1/R2 ≤ 10

2.0 ppm/°C

± 0.05 %

0.02 %

DSM

10 < R1/R2 ≤ 200

3.0 ppm/°C

± 0.1 %

0.05 %

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

Document Number: 63088

For any questions, contact: [e-mail]

www.vishay.com

Revision: 05-Jun-07

1

DSM

Vishay Foil Resistors High Precision Bulk Metal® Foil Surface Mount Voltage Divider, TCR Tracking of < 0.5 ppm/°C, Tolerance

Match of 0.01 % and Stability of ± 0.005 % (50 ppm)

FIGURE 2 - POWER DERATING CURVE	FIGURE 3 - RECOMMENDED LAND

110

e

100

Wattag

0.063 ± 0.004

90

0.004±0.100

0.1)±(2.54

(1.6 ± 0.1)

0.004±0.035 0.1)±(0.89

80

T

Percentof Rated

70

0.040± 0.004

(1.02± 0.1)

0.071± 0.004 (1.8± 0.1)

10

60

50

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

40

30

20

0.100 ± 0.004

0

(2.54 ± 0.1)

0

20

40

60

80 100 120 140

- 60 - 40 - 20

- 55

70

125

Ambient Temperature (°C)

FIGURE 4 - TRIMMING TO VALUES

FIGURE 5 - TYPICAL TCR CURVE

(Conceptual Illustration)

(For more details, see table 1)

+ 150

Current Path

+ 100

Interloop Capacitance

± 2 ppm/°C

Before Trimming

+ 50

Reduction in Series

(+ 25 °C reference)

∆R

Current Path

R

0

(ppm)

Mutual Inductance

After Trimming

- 50

Trimming Process

Reduction due

- 100

to Change in

Removes this Material

Current Direction

from Shorting Strip Area

- 150

MPROVED

Changing Current Path

and Increasing

Resistance

- 200

- 55

Ambient Temperature (°C)

Note: Foil shown in black, etched spaces in white

FIGURE 6 - DIMENSIONS AND IMPRINTING

SIDE VIEW

w

FRONT VIEW

L

H

TH

t

P

P

TW

TW

S

BOTTOM VIEW

TOP VIEW

RATIO TOLERANCE CODE

1

VALUE R1

3

VALUE R2

I

TW

3

10K Q 10K

V

B0219

2

Note:

R1 - between PIN1 and PIN3

1

2

STAND OFF

R2 - between PIN 2 and PIN3

DATE CODE

DIMENSIONS

L

W

H

P

TW

TH

S

t

INCHES

0.160

± 0.008

0.106

± 0.008

0.063

± 0.008

0.031

± 0.005

0.031

± 0.004

0.043

± 0.008

0.100

± 0.008

0.005

± 0.002

MILLIMETERS

4.06

± 0.20

2.69

± 0.20

1.60

± 0.20

0.79

± 0.13

0.79

± 0.10

1.09

± 0.20

2.54

± 0.20

0.13

± 0.05

www.vishay.com

For any questions, contact: [e-mail]

Document Number: 63088

2

Revision: 05-Jun-07