Current Sensing Resistor CTS 73M3AR0005F Metal Plate Construction Copper Alloy Rated 3 Watts

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Product Description

73M1A, 73M2A, 73M3x & 73M5 Series Current Sensing Resistor Up To 5 Watts

The 73M1A, 73M2A, 73M3x, and 73M5 Series Current Sensing Resistors are metal plate packaged devices designed for excellent accuracy in current detection. These resistors utilize a special metallic resistor material, providing good electrical and thermal characteristics for applications such as current detection, current limiting, regulated battery circuits, motor control, power supplies, hard disk drives, inverters/converters, industrial equipment, and infotainment systems.

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 Packaging

Technical Specifications

Model Type	Rated Power [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

Electrical & Environmental Specifications

Test	Test Description	Maximum Delta R [%]
Temperature Coefficient		See table above
Short-Time Overload	Applied electric power equal to 3 times rated power in 5s [JIS C 5201-1 4.13]	0.5 [73M1A, 73M2A, 73M3x], 2.0 [73M5]
Insulation Resistance	Over 10 9 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	No Damage Place on copper sheet [t = 0.2mm] heated by solder, +260C 5C, 5 0.5 seconds	0.5
Solderability	Over 95% Coverage Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17]
Vibration	No Damage Frequency 10Hz to 55Hz, Pk-Pk amplitude 15mm, sweeping rate 1 minute, 3 directions each 2 hours [JIS C 5201-1 4.22]	0.5
Resistance to Solvent	No Damage Immerse in Isopropyl alcohol, +20C to +25C, 60 5 seconds
High Temperature Exposure	1,000 hours @ +155C 2C, bias load 0% power [JIS C 5201-1 4.23.2]	2.0
Change of Temperature	30 minutes @ -55C, 3 minutes @ +25C, 30 minutes @ +155C, 3 minutes @ +25C; 5 cycles	0.5
Moisture Resistance	MIL-STD-202, Method 106, 0% power 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