Current Sensing Resistor CTS 73M3BR075F Metal Plate Construction with Excellent Thermal Characteristics

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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 accurate current detection. These resistors offer excellent electrical and thermal characteristics due to their special metallic resistor material, making them suitable for a wide range of applications including current detection, current limiting, regulated battery circuits, motor control, power supplies, and industrial equipment.

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

Technical Specifications

Model Type	Power Rating [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 R 0.010: 50ppm/C
73M2A	2.0	0.25 - 75	1	+70C	-55C to +155C	R 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 R 0.010: 50ppm/C

Environmental Specifications

Test	Test Description	Maximum Delta R [%]
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