Passive Components


5 W current sensing resistors

11 November 2009 Passive Components

Vishay has expanded its WSR series of Power Metal Strip resistors with the first such device to offer a 5 W power rating in the 4527 package size. Like the WSR2 (2 W) and WSR3 (3 W), the new WSR5 measures just 11,56 mm by 6,98 mm with a height profile of 2,41 mm, making it a compact solution for electronic controls in automotive systems, power supplies in communications base stations, and DC-DC converters and VRMs in high-end workstations and servers.

A proprietary processing technique allows the WSR5 to offer low resistance values ranging from 1 m to 300 m in a standard resistance tolerance of ±1%. A tolerance of ±0,5% is available for the resistance range of 10 m to 300 m. The WSR5’s low inductance values range from 0,5 nH to 5 nH, and the device’s temperature coefficients are ±110 ppm/°C for the 7,5 m to 9,9 m range and ±75 ppm/°C for the 10 m to 300 m range.

The resistor’s proprietary construction features a moulded, high-temperature encapsulation with an integrated heatsink for improved thermal management. As a result, it maintains the good electrical characteristics of the Power Metal Strip construction during operation in a variety of high-current applications. Low thermal EMF, a broad operating temperature range of -65°C to +275°C, and resistance to moisture, vibration, thermal and mechanical shock ensure reliable operation. The WSR5’s proprietary Power Metal Strip design features all-welded construction, solderable terminations and a solid metal alloy resistive element.

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:

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...
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...
Bypass capacitor kit for MMIC amplifiers
29 April 2020, RF Design , Passive Components
High-frequency MMIC amplifiers with broadband gain need to be protected from RF noise on the supply lines, particularly RF energy coupled back into the device from its output. Supply noise creates challenges ...

Read more...
Automotive grade aluminium capacitors
29 April 2020, Altron Arrow , Passive Components
Vishay introduced two new series of automotive grade, surface-mount aluminium electrolytic capacitors that combine high voltages up to 450 V with operating temperatures up to +125°C and useful life up ...

Read more...