ECONOMICAL WIRE WOUND, METAL CLAD RESISTORS

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IRB60, 80, 120 metal clad, wire wound resistors are ideal for applications that require 60W,80W,120W or less and
are on a budget. These models come in a durable metal case have flying leads.

GENERAL SPECIFICATIONS

MODEL	Power rating [W]	Resistance Range [Ω]
		Inductive	Non-Inductive
IRB 60	60	0.1-270	0.1-56
IRB 80	80	0.1-910	0.1-110
IRB120	120	0.1-1.3K	0.1-300

Available Tolerances:  G (+-2%), H (+-3%), J (+-5%), K (+-10%), M (+-20%)

DIMENSIONS

MODEL	DIMENSIONS
	L1	L2	D	W	L3	H
IRB60	100+-1.5	90+-1.5	5+-0.2	32.3+-0.5	75+-1	12.3+-1
IRB80	150+-2	140+-2	4.2+-0.5	34+-1	130+-2	20+-1
IRB120	182+-1	170+-1	5+-0.2	44+-1	150+-1	13+-0.5

CHARACTERISTICS                                                 Values in [ ] mean change in ohmic value after test

Temperature Range	-55C to 200C
Insulation Resistance	20Mohm min.
Dielectric Strength	Available options: AC 1500V,3500V,4500V,5400V MAX. leakage current: 2mA
Temp. Coefficient	+- 260ppm/C maximum
Short time overload	(2%+0.05Ω)                    60W:5×wattage rating, 80W, 120W:10×wattage rating-5 sec.
Moisture Resistance	(3%+0.05Ω)                                            40C, 95% RH, DC100V case to terminal (500hrs.)
Thermal Shock	(2%+0.05Ω)                                                                 wattage rating 30 min., -25C, 15 min.
Vibration	(1%+0.05Ω)                                                 10Hz-55Hz-10Hz (1 min.), 2hrs.each direction
Moisture Load Life	(3%+0.05Ω)              40C, 95%RH, 0.1×wattage rating, 1.5hrs.on, 30min. off, 1000hrs.
Load Life	(5%+0.05Ω)                                                     wattage rating 1.5h. on, 30min.off, 1000hrs.

SURFACE TEMPERATURE INCREASE CURVE

DERATING CURVE

ORDERING PROCEDURE EXAMPLE