Current Sensing Resistor CTS 73M5R047F with Metal Plate Design and JEDEC J STD 020 Reflow Certification

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Product Description

Product Overview

The 73M1A, 73M2A, 73M3x, and 73M5 Series Current Sensing Resistors are metal plate packaged devices designed for excellent accuracy in current detection and limiting. These resistors offer good electrical and thermal characteristics due to their special metallic resistor material, making them suitable for a wide range of industrial applications.

Product Attributes

Brand: CTS Corporation
Material: Metal Plate Construction Copper Alloy
Terminal Finish: Matte Tin [e3]
Certifications: Reflow Capable per JEDEC J-STD-020, +260C Maximum
Packaging: Tape and Reel

Technical Specifications

Model Type	Power Rating [Watts]	Resistance Range [m]	Resistor Tolerance [%]	Rated Ambient Temperature	Operating Temperature Range	Temperature Coefficient
73M1A	1.0	0.25 - 50	1	+70C	-55C to +155C	R
73M2A	2.0	0.25 - 75	1	+70C	-55C to +155C	R
73M3A	3.0	0.25 - 3	1	+70C	-55C to +155C	R 0.001: 200ppm/C; R > 0.001: 100ppm/C
73M3B	3.0	4 - 100	1	+70C	-55C to +155C	50ppm/C
73M5	5.0	1 - 120	1	+70C	-55C to +155C	R

Environmental Specifications

Test	Test Description	Maximum Delta R [%]
Short-Time Overload	Applied electric power equal to 3 times rated power in 5s	0.5 [73M1A, 73M2A, 73M3x], 2.0 [73M5]
Insulation Resistance	Over 10⁹ ohm	-
Dielectric Withstanding Voltage	No Breakdown	-
Resistance to Solder Heat	No Damage	0.5
Solderability	Over 95% Coverage	-
Vibration	No Damage	0.5
Resistance to Solvent	No Damage	-
High Temperature Exposure	1,000 hours @ +155C 2C, bias load 0% power	2.0
Change of Temperature	5 cycles	0.5
Moisture Resistance	MIL-STD-202, Method 106, 7a and 7b not required, 1 cycle = 24 hours, 10 cycles	1.0
Bias Humidity	1,000 hours @ +85C 2C, 85% relative humidity, bias load 10%, on time 90 minutes/off time 30 minutes	1.0
Endurance [Rated Load]	1,000 hours @ +70C 3C, bias load, on time 90 minutes/off time 30 minutes	2.0

Mechanical Specifications

Model Type	Dimensions [mm] (L x W x t)	Resistance [m]
73M1A	3.2 0.3 x 1.6 0.3 x 0.6 0.3	0.25 - 50
73M2A	6.3 0.3 x 3.2 0.3 x 1.6 0.3	0.25 - 75
73M3A	6.8 0.3 x 6.5 0.3 x 1.2 Max.	0.25 - 3
73M3B	7.2 0.3 x 6.7 0.3 x 1.3 Max.	4 - 100
73M5	11.4 0.3 x 6.9 0.3 x 1.8 Max.	1 - 120