Current Sensing Thin Film Resistors offer low ohmic values.

Press Release Summary:

Available in 5 sizes from 0603–2512, LCS series features minimum values down to 100 mΩ and can be used for sensing and measurement of DC and AC currents in sub-3 A range. Products deliver TCRs in the hundreds of milliohms range and include such power ratings as 1 W (2512 size), anti-sulphur terminations, low sensitivity to temperature variations, and precision levels of ±0.5% and ±50ppm/°C. Adopters include industrial, medical, instrumentation, and IT markets.

Original Press Release:

Low Ohmic Value Current Sensing Resistors from TT Electronics Reduce Design Footprint

Proprietary technology enables very low resistance values

Woking, UK - TT Electronics, a global provider of engineered electronics for performance critical applications, today launched the LCS series of thin film resistors.  For sensing and measurement of DC and AC currents in the sub-3A range, the resistors bring precision thin film resistor performance into the field of low ohmic values for use in very accurate current sensing applications.  Most thin film chips have a minimum value in the range of one to 10Ω, but TT Electronics’ LCS series uses a proprietary technology to extend this down to 100mΩ.  The resistors also feature low sensitivity to temperature variations.

Aimed at designers of power supplies, battery monitoring, process control and point of load converters, the LCS resistors will find acceptance for use in market sectors such as industrial, medical, instrumentation and IT.

The resistors offer a level of precision of ±0.5% and ±50ppm/°C, providing higher precision and temperature stability of current measurement.  While there are currently a few thin film chip products below one ohm that use the nickel phosphorus material traditionally used for low value films, TT Electronics’ proprietary LCS film system delivers lower TCRs (temperature coefficient of resistance) in the hundreds of milliohms range.

Available in five sizes from 0603 to 2512, LCS resistors feature high power ratings, e.g. 1W for 2512, which is comparable to thick film ratings.  This also enables smaller footprints to be used.  Enhancing reliability and reducing field failures in industrial applications, LCS also feature anti-sulphur terminations.

A major factor driving the demand for this type of product is the growth of battery powered equipment.  The proprietary thin film technology of TT Electronics’ LCS bridges the gap between the ohmic values offered by bulk metal chips and those of conventional nichrome thin film chips. Whilst thick film chips are also available in this very low ohmic range, LCS offers superior precision, offering the lowest TCR for precision current sensing available in the 0.1 to 1 Ω range.

LCS series resistors are available from the following distributors: Mouser, Newark, and Farnell. For other franchised distributors, please see

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About TT Electronics plc
TT Electronics is a global provider of engineered electronics for performance critical applications. It works with market-leading customers in the transportation, industrial, medical, and aerospace and defence sectors.

With headquarters in Woking, UK, TT Electronics employs approximately 6000 staff and operates from 27 locations around the world. It has four divisions: Transportation Sensing and Control, Industrial Sensing and Control, Advanced Components, and Integrated Manufacturing Services.

For more information about TT Electronics visit

Marketing contact:
Liz Blair,
Group Marketing Communications Director
TT Electronics plc
T: +44 191 290 2001

Press contact:
Oliver Davies
Client Services Director
T: +44 1225 470 000

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