Ceramic Packaged Current Sensing Resistor CTS 73WL6R120J Featuring Thick Film and Tape Reel Packaging

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Product Description

Product Overview

The 73WLx & 73WEx Series Current Sensing Resistors are ceramic packaged devices designed for accurate current detection and limiting. Featuring a thick film construction with a wide terminal configuration, these resistors offer excellent electrical and thermal characteristics, making them suitable for a wide range of industrial and power supply applications.

Product Attributes

Brand: CTS Corporation
Construction: Thick Film
Terminal Finish: Matte Tin (e3)
Certifications: RoHS Compliant (73WLX), Lead Free Design (73WEx)
Packaging: Tape and Reel

Technical Specifications

Model Type	Package Size [Inch/mm]	Rated Power [Watts] @ +70C	Resistance Range [m]	Tolerance [%]	Temperature Coefficient	Operating Temp Range [C]	Working Voltage [max V]	Overload Voltage [max V]
73WL4 / 73WE4	1206 [3216]	0.75	10 - 910	1, 5	200ppm/C (for 100-910m), 500ppm/C (for 10-33m), 350ppm/C (for 36-91m)	-55 to +155	200	400
73WL6 / 73WE6	2010 [5025]	1.0	10 - 910	1, 5	200ppm/C (for 100-910m), 500ppm/C (for 10-33m), 350ppm/C (for 36-91m)	-55 to +155	200	400
73WL7 / 73WE7	2512 [6432]	2.0	5 - 910	1, 5	200ppm/C (for 100-910m), 500ppm/C (for 10-33m), 350ppm/C (for 36-91m)	-55 to +155	200	400

Environmental Parameters

Test	Test Description	Maximum Delta R [%]
Temperature Coefficient	Measured temperature at -55C to 155C	200ppm/C (Note 1)
Short-Time Overload	Apply 2.5 times the rated voltage, 5 seconds, maximum 100V	2.0
Insulation Resistance	Over 10⁹ ohm (Measured at terminals and center of resistor by D.C. 100V 15V in 1 minute [JIS C 5202])	-
Dielectric Withstanding Voltage	No Breakdown (Applied at terminals and center of resistor on A.C. 400V, 1 minute [JIS C 5201-1 4.7])	-
Resistance to Solder Heat	No Damage (Immerse in solder, +260C 5C, 10 1 seconds)	1.0
Solderability	Over 95% Coverage (Immerse terminal in solder [Sn3Ag0.5Cu], +245C 0.5C, 3 0.5 seconds [JIS C 5201-1 4.17])	-
High Temperature Exposure	1,000 hours @ +155C 2C, bias load 0% power [JIS C 5201-1 4.23.2]	3.0
Change of Temperature	No Damage (30 minutes @ -55C, 10 minutes @ +25C, 30 minutes @ +155C, 10 minutes @ +25C; 1,000 cycles)	1.0
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, 90% - 95% relative humidity, bias load 10%, on time 90 minutes/off time 30 minutes	3.0
Endurance [Rated Load]	1,000 hours @ +70C 3C, bias load, on time 90 minutes/off time 30 minutes	3.0
Resistance to Solvent	No Damage (Immerse in Isopropyl alcohol, +20C to +25C, 60 5 seconds)	-
Terminal Strength [Bending]	No Damage (3mm bending, 1mm/second, hold 5 seconds)	0.1