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Metal Plate Current Sensing Resistor CTS 73M3BR050F with Copper Alloy Material and Matte Tin Finish

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Metal Plate Current Sensing Resistor CTS 73M3BR050F with Copper Alloy Material and Matte Tin Finish

Resistance : 50mΩ

Power(Watts) : 3W

Type : Current Sense Resistor

Tolerance : ±1%

Description : 50mΩ 3W Current Sense Resistor ±1% 2726 Chip Resistor - Surface Mount RoHS

Mfr. Part # : 73M3BR050F

Model Number : 73M3BR050F

Package : 2726

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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 applications. These resistors feature a special metallic resistor material for superior electrical and thermal characteristics, making them suitable for demanding industrial and electronic systems.

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

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	0.25 - 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

Environmental Specifications

Test	Maximum Delta R [%]	Test Description
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	Applied electric power equal to 3 times rated power in 5s [JIS C 5201-1 4.13]
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	No Damage. 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	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]
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	No Damage. 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

Applications

Current Detection
Current Limiting
Regulated Battery Circuits
Motor Control
Power Supply
Hard Disk Drives
Inverter/Converter
Industrial Equipment
Infotainment Systems

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 1.3 Max.	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

Note: Dimensions are approximate and may vary. Refer to the package drawing for precise details.

2412111354_CTS-73M3BR050F_C4315236.pdf

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