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Current Sensing Resistor CTS 73M1AR050F Metal Plate Construction Featuring Matte Tin Terminal Finish

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Current Sensing Resistor CTS 73M1AR050F Metal Plate Construction Featuring Matte Tin Terminal Finish

Description : 1206 Chip Resistor - Surface Mount RoHS

Mfr. Part # : 73M1AR050F

Model Number : 73M1AR050F

Package : 1206

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Product Overview

The 73M1A, 73M2A, 73M3x, and 73M5 Series are metal plate packaged current sensing resistors designed for excellent accuracy in current detection and limiting applications. These resistors offer robust electrical and thermal characteristics due to their special metallic resistor material, making them suitable for demanding industrial and power applications.

Product Attributes

Brand: CTS Corporation
Construction: Metal Plate
Material: 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]	Resistance Tolerance [%]	Rated Ambient Temperature	Operating Temperature Range	Temperature Coefficient
73M1A	1.0	0.25 - 50	1	+70C	-55C to +155C	R < 0.010: 100ppm/C, R 0.010: 50ppm/C
73M2A	2.0	1 - 75	1	+70C	-55C to +155C	R < 0.010: 100ppm/C, R 0.010: 50ppm/C
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 < 0.010: 100ppm/C, R 0.010: 50ppm/C

Test	Test Description	Maximum Delta R [%]	Conditions
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	Measured at terminals and center of resistor by D.C. 100V 15V in 1 minute [JIS C 5201-1 4.6]	Over 10⁹ ohm
Dielectric Withstanding Voltage	Applied at terminals and center of resistor on A.C. 500V, 1 minute [JIS C 5201-1 4.7]	No Breakdown
Resistance to Solder Heat	Place on copper sheet [t = 0.2mm] heated by solder, +260C 5C, 5 0.5 seconds	0.5	No Damage
Solderability	Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17]	Over 95% Coverage
Vibration	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	No Damage
Resistance to Solvent	Immerse in Isopropyl alcohol, +20C to +25C, 60 5 seconds		No Damage
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	No Damage
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

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	1 - 75
73M3A	6.5 0.3 x 6.8 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

2412111354_CTS-73M1AR050F_C6100923.pdf

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