SMD (4-Tab) Current Sensing Shunts - LVS Series

Key Features:

  • Lower self-heating or temperature rise per watt
  • Low TCR and Low EMF for greater thermal stability
  • Excellent overload and surge current handling capabilities

More Features of PRC's Current-Sensing Shunts:

  • Dependable and repeatable measurements under load - Without this feature the voltage drop across a low value element will no longer be a linear function of current.
  • Thru-Hole or SMD Designs - (1) are ideal in amplifier circuits and accurate voltage drop applications. (2) Offer excellent thermal transfer to base and better overload and surge current handling capabilities
  • Hot-Tinned Copper Terminals - for better solder wetting, longer shelf life and higher current-carrying capacities.
  • Lower Ohmic Values - to one milliohm (0.001) ... and closer resistance tolerances to ±0.005%.
  • Very Low TCR Characteristics - 0±15ppm (Standard) - and Special TCRs to 0±10ppm for operation over a wider temperature span and provide greater stability under load
  • Low Thermal EMF Construction - 1microvolt/°C. with respect to the copper terminals. This low EMF construction together with PRC's "single-joint" 4-terminal design will eliminate "lead-out" resistance variations, contact resistance and annoying thermal electric effects generally associated with very low resistance values.
  • Perform like - a "precision instrument"

PRC Facts:

Why is Stability Vs. Time so important?

  • Stability is the quality to resist permanent change ... and must be designed into the parts from the start. It is very difficult to stabilize or condition a general-purpose resistor and be confident that it will meet a critical application.
  • All stability specs at PRC are designed for precise requirements - even if you specify 1% resistance tolerances.
  • Low EMF construction with respect to the copper terminals is Standard at PRC. .

PRC Tips:

  • Many low value tin oxide designs have thermocouple errors as large as 100 microvolts per degree C. which could degrade circuit performance. Try to avoid thermal gradients that could cause a large temperature difference across the low value resistor ... and specify with low EMF construction.
  • Be sure to "Heat Test" all delicate SMDs that will be exposed to temperatures above +125°C.

LVS Series SMD (4-Tab) Shunts
SMD 4-tab LVS2 2 .001Ω - 100Ω to ±.005%
SMD 4-tab LVS3 3 .001Ω - 100Ω to ±.005%
SMD 4-tab LVS5 5 .001Ω - 100Ω to ±.005%