DSMZ (Z-Foil)

Vishay Foil Resistors

Document Number: 63121

For any questions, contact: foil@vishay.com

www.vishay.com

Revision: 06-Aug-07

1

Divider, TCR Tracking of < 0.1 ppm/°C, PCR of ± 5 ppm

at Rated Power and Stability of ± 0.005 % (50 ppm)

Any value at any ratio available within resistance range

INTRODUCTION

technologies available today for applications that require

ultra-high precision and ultra-high stabilitly.

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).

The DSMZ offers low TCR (both absolute and tracking), low

PCR, excellent load life stability, tight tolerance match,

excellent ratio stability, low thermal EMF, and low current

noise - all in one package.

The DSMZ surface mount divider provides a matched pair of

package. The electrical specification of this integrated

construction offers improved performance and better real

estate utilization over discrete resistors and matched pairs.

Our Application Engineering Department is available to advise

and make recommendations. For non-standard technical

requirements and special applications, please contact us.

Notes

1. Tighter performances are available

2. 100

Ω to 20 kΩ per resistor available in DSM

FEATURES

Absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C)

± 0.2 ppm/°C typical

(- 55 °C to + 125 °C, + 25 °C Ref.)

Tracking: 0.1 ppm/°C typical

• Power Coefficient Tracking

“

ΔR due to self heating”: ± 5 ppm at Rated Power

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

Each Resistor: 0.05 W

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

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

• Resistance Range: 100 Ω to 10 kΩ per resistor

• Large Variety of Resistance Ratios: 1:100

• Electrostatic Discharge (ESD) above 25 000 V

• Short Time Overload ≤ 0.005 %

• Non Inductive, Non Capacitive Design

• Rise Time: 1.0 ns without ringing

• Current Noise: < - 40 dB

• Thermal EMF: 0.05 µV/°C typical

• Voltage Coefficient: < 0.1 ppm/V

• Non Inductive: < 0.08 µH

• Non Hot Spot Design

• Terminals: silver coated copper alloy

• For better performances, please contact Application

Engineering

APPLICATIONS

• Bridge networks

• Differential amplifiers

• Ratio arms in bridge circuits

• Medical and test equipment

• Military

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

RESISTANCE VALUES

100

ABSOLUTE TOLERANCE

EACH RESISTOR

± 0.02 %, ± 0.05 %, ± 0.1 %

RESISTANCE

TOLERANCE MATCH

0.01 %, 0.02 %, 0.05 %

TCR

Absolute: (typical and maximum

spread): ± 0.2 ± 2.0 ppm/°C

- 55 °C to + 125 °C

(+ 25 °C reference)

Tracking: (maximum)

For R1/R2 = 1

0.5 ppm/°C

For 1 < R1/R2

≤ 10

1.0 ppm/°C

For 10 < R1/R2

≤ 100 2.0 ppm/°C

FIGURE 1 - SCHEMATIC

OPTION 1

SAME OHMIC VALUE,

SAME ABSOLUTE TOLERANCE

OPTION 2

RESISTOR PAIR

FIGURE 2 - POWER DERATING CURVE

Available

Pb-free

RoHS*

COMPLIANT

Vin

Vout

-

+

DSMZ

125

- 55

90

80

- 60

- 40

- 20

0

20

40

60

80

100

120

70

140

70

60

50

40

30

20

10

0

100

110

Ambient Temperature (°C)