Low Resistance Metal Alloy Resistor TT Electronics LRMAM1206-R003FT5 for Current Sensing Applications

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Product Description

Low Resistance Metal Alloy Resistors LRMA Series

The LRMA Series low resistance metal alloy resistors are designed for current sensing applications in power electronics. They offer a wide resistance range, high temperature operation, and are available in low thermal EMF and high power versions. These resistors are AEC-Q200 qualified and comply with RoHS3 directives.

Product Attributes

Brand: TT Electronics
Series: LRMA
Compliance: Pb-free, EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
Certifications: AEC-Q200 qualified
Construction: Copper electrode with nickel then tin plating, Low TCR resistance alloy plate
Coating: UL94-V0
Solvent Resistance: Resistant to all normal industrial cleaning solvents suitable for printed circuits.
Storage Conditions: 5C to 35C and 40% to 75%RH
Shelf life: 2 years from manufacture

Technical Specifications

Attribute	Details
Resistance Range	0.5m to 500m
Operating Temperature	Up to 170C
Features	Low thermal EMF version, High power version, Inverse version
Application	Current sensing for power electronics
Marking	Ohmic value (e.g., "R002"=2m, "R010"=10m). Specific markings for LRMAM1206 ("01"=1m), LRMAM0805 ("2"=2m, "010"=10m)
Thermal Performance & Mounting	Temperature rise dependent on mounting conditions. Reference conditions assume 20m copper with thermal vias. Self-heating in current tracks should be negligible or accounted for by derating. Designed for PCB mounting; probed measurements may read higher values.
Reference Pad Dimensions (mm)	2.8 x 1.7 (0612), 0.4 x 1.83 (0805), 0.4 x 2.8 (1206), 1.2 x 4.5 (2010), 1.5 x 5.8 (2512), 5.4 x 3.4 (1225)
Probe Location Tolerances	0.02mm
Processing	Suitable for wave and IR reflow soldering. Recommended reflow profile for Pb-free SAC305 alloy: Pre-heat: 60s-120s at 150C-180C; Soldering: 20s-40s at 230C; Peak: 5s at 255C-260C
Ordering Example	LRMAM2512-R01FT4 (LRMA, low thermal EMF, 2512, 10 milliohms 1%, Pb-free)