Power Metal Strip resistor increases accuracy & reduces TCR

17th February 2016
Source: Vishay
Posted By : Nat Bowers
Power Metal Strip resistor increases accuracy & reduces TCR

Combining an extended power rating to 0.5W with a Kelvin 4-terminal connection, Vishay Intertechnology has announced a surface-mount Power Metal Strip current sense resistor in the compact 1206 case size. The WSK1206...18 High Power reduces TCR down to 35ppm, enables tight tolerances down to 0.1% for increased measurement accuracy and offers low resistance values down to 0.01Ω to minimise excess power dissipation.

Offering twice the power of standard resistors in the 1206 footprint, the WSK1206...18 High Power allows designers to save board space and reduce costs by utilising fewer and smaller components. With its 4-terminal construction, the resistor reduces system errors while eliminating the need for system calibration during manufacturing or in the field to further reduce costs and improve end product performance.

The advanced construction of the current sense resistor incorporates a solid metal nickel-chrome or manganese-copper resistive element with low TCR (under 20ppm/°C). This results in a pulse-tolerant, tight-tolerance resistor in the 1206 package size that maintains the superior electrical characteristics of the Power Metal Strip construction.

The WSK1206...18 High Power is suited for all types of current sensing, voltage division and pulse applications in power management for cell phones; DC/DC converters for servers, VRMs for laptops and Li-ion battery safety and management; industrial instrumentation; and automotive electronic control such as engine, transmission, anti-lock brakes, audio and climate controls.

Like all Power Metal Strip resistors, the device features an all-welded construction that contributes to its superior electrical performance. A proprietary processing technique produces extremely low resistance values ranging from 0.01 to 0.05Ω, with tight tolerances of 0.1, 0.5 and 1.0%. The WSK1206...18 High Power provides low thermal EMF (less than 3μV/°C) and operates over a temperature range from -65 to +170°C. The device is RoHS-compliant, halogen-free and Vishay Green.

Samples and production quantities of the new resistor are available now, with a lead time of six to eight weeks for larger orders.


You must be logged in to comment

Write a comment

No comments

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Hotspots Specials 2019
24th October 2019
Germany Böblingen, Germany
IoT Solutions World Congress 2019
29th October 2019
Spain Barcelona
Maintec 2019
30th October 2019
United Kingdom NEC, Birmingham
NOAH Conference 2019
30th October 2019
United Kingdom Old Billingsgate, London
productronica 2019
12th November 2019
Germany Messe München