Passive Components


Voltage dividers and resistor networks

20 July 2011 Passive Components

Vishay has released new 2-, 3- and 4-resistor voltage dividers and resistor networks in both Bulk Metal Foil and Z-Foil versions. The resistor arrays come in standard configurations, but with custom values and tolerances for all 13 possible schematic variations of two, three and four resistors.

For applications requiring maximum precision, the Z-Foil devices feature low absolute TCR of ±0,05 ppm/°C from 0°C to +60°C and ±0,2 ppm/°C from 55°C to +125°C, +25°C ref., TCR tracking to ±0,1 ppm/°C, matching tolerance to 50 ppm and PCR (R due to self heating) of 5 ppm at rated power. For a low thermal EMF of 0,05 μV/°C, the leads that emerge from the arrays’ packages connect directly to the resistance elements or an internal PC board. In addition, each element offers a wide resistance range from 1 Ω to 100 kΩ, and can be combined for even higher values. Finally, the elements retain all the advantages of discrete Bulk Metal Z-Foil resistors, plus the ability to be further sorted for TCR track and absolute matching before encapsulation.

The Z-Foil resistor arrays feature power ratings of 0,3 W per element at +125°C and resistance ratio stability to 0,001% at 0,05 W. The resistor networks offer a rise time of 1 ns, with effectively no ringing, a thermal stabilisation time of <1 s (nominal value achieved within 10 ppm of steady state value), current noise of 0,010 μVrms/V of applied voltage (<-40 dB), a voltage coefficient of <0,1 ppm/V and a non-inductive (<0,08 μH), non-capacitive design.

The networks are optimised as voltage dividers, bridges and attenuators in a wide range of military and aerospace, medical and high-temperature down-hole applications where performance and stability are important, including differential amplifiers, gain-defining resistors in digital voltmeters, ratio arms in bridge circuits, fuel metering and fire control instrumentation, binary ladders, and linear and linear-summing networks.

For applications that require only near-maximum stability, the standard foil resistor arrays feature a TCR of ±2 ppm/°C from -55°C to +125°C, +25°C ref., TCR tracking to ±0,5 ppm/°C and matching tolerance to 50 ppm. The devices offer a low thermal EMF of 0,05 μV/°C and a resistance range from 1 Ω to 150 kΩ. The standard foil resistor arrays feature power ratings of 0,3 W at


+125°C for resistance values to 100 kΩ, and 0,2 W for resistance values above 100 kΩ.

For more information contact Marian Ledgerwood, Future Electronics, +27 (0)21 421 8292, marian.ledgerwood@futureelectronics.com, www.futureelectronics.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Thick-film chip resistors
29 April 2020, Electrocomp , Passive Components
Bourns announced the introduction of its new Model CR01005 series thick-film chip resistor. This extra small – 01005 inch (0402 metric) – CR01005 series broadens the general purpose thick-film chip resistor ...

Read more...
Automotive-grade MLCCs
29 April 2020, TRX Electronics , Passive Components
Yageo's automotive grade MLCC (multilayer chip capacitor) AC/AS series is AEC-Q200 qualified as well as MIL-STD-020D tested to ensure its reliability under various temperatures (from -55°C to +150°C) ...

Read more...
Chip resistors in automotive grade
29 May 2020, Altron Arrow , Passive Components
Vishay has enhanced its MC AT precision series of automotive grade thin film chip resistors with a wider range of resistance values from 47 Ω to 10 MΩ in the 1206 case size. The MCA 1206 AT is the industry’s ...

Read more...
Storage choke against harmonic distortion
29 April 2020, Würth Elektronik eiSos , Passive Components
The WE-LHMD is an SMT-mountable storage choke from Würth Elektronik optimised for filter topologies in Class-D amplifiers. Thanks to their iron powder cores, the high-current inductors for audio applications ...

Read more...
DC-DC converter for aerospace/defence
25 March 2020, Future Electronics , Power Electronics / Power Management
Vicor announced the DCM5614, an isolated, regulated 270 V-28 V DC-DC converter with an output power rating of 1300 W in a 142,2 x 35,6 x 9,4 mm VIA package. Providing power density of 27,52 W/cm3 at a ...

Read more...
High-speed DDR4 SDRAMs
29 April 2020, Future Electronics , DSP, Micros & Memory
Alliance Memory has expanded its product offering with a new line of high-speed CMOS DDR4 SDRAMs. For improved performance over previous-generation DDR3 devices, the 4 GB AS4C256M16D4 and AS4C512M8D4 ...

Read more...
High-temperature shielded power inductors
29 April 2020 , Passive Components
The Bourns inductive components product line is introducing the Model SRP6030VA and SRP1040VA high-temperature shielded power inductors. These models are built with a new metal alloy powder formulation ...

Read more...
Passive components and subsystems for demanding applications
29 April 2020, Actum Group , Passive Components
Represented locally by Actum Group, Exxelia is a specialised manufacturer of high-quality Hi-Rel passive components and precision subsystems. Exxelia products meet complex specifications and cater for ...

Read more...
Storage choke for audio amplifiers
29 April 2020, Würth Elektronik eiSos , Passive Components
With WE-HIDA, Würth Elektronik offers a storage choke optimised for Class D amplifiers. The high-current inductor is characterised by low core losses, very low DC resistances from 2,5 mΩ to 14,8 mΩ and ...

Read more...
Radio interference suppression choke
29 April 2020, Würth Elektronik eiSos , Passive Components
Würth Elektronik is complementing its AEC-Q200 product group of qualified radio interference suppression chokes with an SMT-mountable model, the WE-RCIS. The rod core choke, available in four versions, ...

Read more...