Current Sensing Resistor CTS 73M1AR011F Featuring Metal Plate Construction and JEDEC 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. Utilizing a special metallic resistor material, these resistors offer superior electrical and thermal characteristics, making them suitable for a wide range of industrial applications including motor control, power supplies, and battery circuits.

Product Attributes

Brand: CTS Corporation
Construction: Metal Plate
Terminal Finish: Matte Tin [e3]
Reflow Capable: per JEDEC J-STD-020, +260C Maximum
Packaging: Tape and Reel
Certifications: JEDEC J-STD-020, JIS C 5201-1, MIL-STD-202

Technical Specifications

Model Type	Power Rating [Watts]	Resistance Range [m]	Resistance 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

Test	Maximum Delta R [%]	Condition
Short-Time Overload	0.5	Applied electric power equal to 3 times rated power in 5s [JIS C 5201-1 4.13]
Short-Time Overload	2.0	[73M5]
Insulation Resistance	Over 10⁹ ohm	Measured at terminals and center of resistor by D.C. 100V 15V in 1 minute [JIS C 5201-1 4.6]
Dielectric Withstanding Voltage	No Breakdown	Applied at terminals and center of resistor on A.C. 500V, 1 minute [JIS C 5201-1 4.7]
Resistance to Solder Heat	0.5	Place on copper sheet [t = 0.2mm] heated by solder, +260C 5C, 5 0.5 seconds
Solderability	Over 95% Coverage	Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17]
Vibration	0.5	Frequency 10Hz to 55Hz, Pk-Pk amplitude 15mm, sweeping rate 1 minute, 3 directions each 2 hours [JIS C 5201-1 4.22]
Resistance to Solvent	No Damage	Immerse in Isopropyl alcohol, +20C to +25C, 60 5 seconds
High Temperature Exposure	2.0	1,000 hours @ +155C 2C, bias load 0% power [JIS C 5201-1 4.23.2]
Change of Temperature	0.5	30 minutes @ -55C, 3 minutes @ +25C, 30 minutes @ +155C, 3 minutes @ +25C; 5 cycles
Moisture Resistance	1.0	MIL-STD-202, Method 106, 0% power 7a and 7b not required, 1 cycle = 24 hours, 10 cycles
Bias Humidity	1.0	1,000 hours @ +85C 2C, 85% relative humidity, bias load 10%, on time 90 minutes/off time 30 minutes
Endurance [Rated Load]	2.0	1,000 hours @ +70C 3C, bias load, on time 90 minutes/off time 30 minutes