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Y4485V0078BT9R

Description
Ultra High Precision Bulk Metal® Z-Foil Surface Mount Voltage Divider
File Size160KB,5 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Download Datasheet View All

Y4485V0078BT9R Overview

Ultra High Precision Bulk Metal® Z-Foil Surface Mount Voltage Divider

DSMZ (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Bulk Metal
®
Z-Foil Surface Mount Voltage
Divider, TCR Tracking of < 0.1 ppm/°C, PCR of ± 5 ppm
at Rated Power and Stability of ± 0.005 % (50 ppm)
FEATURES
Temperature Coefficient of Resistance (TCR):
Any value at any ratio available within resistance range
INTRODUCTION
Bulk Metal
®
Z-Foil Technology out-performs all other resistor
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
Bulk Metal
®
Z-Foil Resistors in a small epoxy molded
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.
IM
PR
O
VE
D
Absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C)
Pb-free
Available
± 0.2 ppm/°C typical
(- 55 °C to + 125 °C, + 25 °C Ref.)
RoHS*
COMPLIANT
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
R
2
TABLE 1 - RESISTANCE VALUES AND TOLERANCES
1)
RESISTANCE VALUES
100
Ω
- 10 kΩ per resistor
2)
ABSOLUTE TOLERANCE
EACH RESISTOR
RESISTANCE
TOLERANCE MATCH
TCR
± 0.02 %, ± 0.05 %, ± 0.1 %
0.01 %, 0.02 %, 0.05 %
Absolute: (typical and maximum
spread): ± 0.2 ± 2.0 ppm/°C
Tracking: (maximum)
For R1/R2 = 1
For 1 < R1/R2
10
- 55 °C to + 125 °C
(+ 25 °C reference)
0.5 ppm/°C
1.0 ppm/°C
Notes
1. Tighter performances are available
2. 100
Ω
to 20 kΩ per resistor available in DSM
FIGURE 1 - SCHEMATIC
R
1
R
2
Percent of Rated Wattage
For 10 < R1/R2
100 2.0 ppm/°C
OPTION 1
SAME OHMIC VALUE,
SAME ABSOLUTE TOLERANCE
OPTION 2
RESISTOR PAIR
R
1
/R
2
- DIFFERENT VALUES
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63121
Revision: 06-Aug-07
For any questions, contact: foil@vishay.com
www.vishay.com
1
PR
O
DU
CT
APPLICATIONS
Instrumentation amplifiers
Bridge networks
Differential amplifiers
Ratio arms in bridge circuits
Medical and test equipment
Military
Airborne etc.
R
1
Vin
-
Vout
+
DSMZ
FIGURE 2 - POWER DERATING CURVE
110
100
90
80
70
60
50
40
30
20
10
0
- 60 - 40
- 55
- 20
0
20
40
60
70
80
100
120 140
125
Ambient Temperature (°C)
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