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

Price Negotiable

Price: Negotiable

MOQ: Negotiable

Delivery Time: Negotiable

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 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
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	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