H Series
Vishay Foil Resistors
Document Number: 63006 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 23-Mar-10 5
ULTRA HIGH PRECISION HERMETICALLY
SEALED RESISTORS
INTRODUCTION
The response of Vishay's hermetically sealed resistors under
variable conditions and stresses can be made better by
additional in-house oriented processes (PMO). Processes
such as short time overload, accelerated load life and
temperature cycling produce enhanced levels of accuracy,
stability and speed, offering immediate answers to many
resistor applications currently believed unsolvable, and
opens entirely new areas of design where the use of
resistors had not been considered.
APPLICATIONS INCLUDE
• Resistance standards
• Feedback devices for operational amplifiers
• Precision voltage dividers
• Meter multipliers
• Precision bridge resistors
• Decade voltage dividers
See table 5 for the improvement to expect in hermetically
sealed parts when calling for Vishay in-house oriented
processes (PMO).
ORDERING INFORMATION
Resistors are built to your requirements. Send your schematic and electrical requirements to the applications engineering
department at foil@vishaypg.com
. A unique part number will be assigned which defines all aspects of your resistor.
TABLE 5 - EXAMPLES OF NON-STANDARD REQUIREMENTS
TYPE VALUE
TOLERANCE TCR
REMARKS
ABSOLUTE MATCH ABSOLUTE TRACKING
VHA518-11 Set of 10 Resistors
(+ 20 °C to + 30 °C)
1 Ω 0.1 % 0.005 % 0.5 ppm/°C 0.5 ppm/°C with PMO
VHA518-7 4-Terminal (+ 20 °C to + 30 °C)
10 Ω 0.05 % - 0.5 ppm/°C -
with PMO
100 Ω 0.01 % - 0.5 ppm/°C -
120 Ω 0.005 % - 0.4 ppm/°C -
1K 0.005 % - 0.3 ppm/°C -
10K 0.001 % - 0.3 ppm/°C -
100K 0.001 % - 0.3 ppm/°C -
VHA518-7 4-Terminal Matched Pairs
(+ 20 °C to + 30 °C)
10 Ω 0.05 % 0.02 % 0.5 ppm/°C 0.5 ppm/°C
with PMO
100 Ω 0.01 % 0.01 % 0.5 ppm/°C 0.5 ppm/°C
1K 0.005 % 0.002 % 0.3 ppm/°C 0.3 ppm/°C
10K 0.001 % 0.002 % 0.3 ppm/°C 0.3 ppm/°C
100K 0.001 % 0.002 % 0.3 ppm/°C 0.3 ppm/°C
VHA518 Set of 10 Resistors
(+ 18 °C to + 28 °C, + 23 °C ref.)
999Ω475 0.05 % 0.005 % 0.5 ppm/°C 0.5 ppm/°C with PMO
