TT Electronics has unleashed new high-power current sense resistors to offer current sensing in industrial, medical and automotive applications. With values down to 200μΩ and a corresponding power rating on standard FR4 PCB of up to 10W, the maximum measurable current is over 200A, and hence in most cases restricted only by the capacity of the PCB tracks. However, a 50% higher power rating of 15W can be achieved for assemblies mounted on a thermal substrate such as direct bonded ceramic (DBC) or insulated metal substrate (IMS), making these resistors ideal for hybrid modules.
Helping designers of power supplies and motor drives in the industrial, automotive and medical industries, the LRMAP5930 series resistors are ideal for the specific areas of regulating current flow, detecting stalled motors and particularly, measuring power consumption.
The series is AEC-Q200 qualified for the automotive market while other applications include power supplies, battery monitoring, and process control.
Resistance values range from 200μΩ to 2mΩ and the resistors feature a high surge energy capability of up to 33J.
Robust, the resistors are formed from a continuous band of E‑beam welded precision resistive strip, and various alloys are used based on the resistance value.
The components are laser marked with “5930”, alloy type, ohmic value and tolerance. They are resistant to all normal industrial cleaning solvents suitable for printed circuits.