# MRB Wirewound Resistors

## Features
· High temperature coating (> 350 °C)
· Welded construction
· Non-inductive styles available ("NI" designation)
· High power to size ratio

## Electrical Specifications (per model)

Model	Power Rating (25°C) - U	Power Rating (25°C) - V	Tolerance (%)	Resistance Range (Ω)	Weight (g)
MRB01	1.0	1.5	0.5, 1, 5	0.085 to 5.0K	0.30
MRB02	1.5	2.2	0.5, 1, 5	0.05 to 6.85K	0.32
MRB03	2.25	3.0	0.5, 1, 5	0.05 to 10.4K	0.34
MRB05	4.0	5.0	0.5, 1, 5	0.015 to 24.5K	0.70
MRB06	5.0	6.0	0.5, 1, 5	0.02 to 32.3K	1.60
MRB10	7.0	10.0	0.5, 1, 5	0.03 to 90.9K	4.20
MRB12	10.0	12.0	0.5, 1, 5	0.04 to 144.9K	4.70

## Technical Specifications
· Temperature Coefficient: ±30 ppm/°C (≥ 10 Ω), ±50 ppm/°C (1.0 - 9.9 Ω), ±90 ppm/°C (0.5 - 0.99 Ω)
· Terminal Strength: 5 lb min (MRB01-03), 10 lb min (MRB05+)
· Dielectric Withstanding Voltage: 500 VAC (≤ 3W), 1000 VAC (>4W)
· Operating Temperature: U: -65 to +250°C, V: -65 to +350°C

## Dimensions (inches [mm])

Model	L	L1 Max.	D	LD
MRB01	0.285 [7.24]	0.375 [9.52]	0.110 [2.79]	0.020 [0.508]
MRB02	0.310 [7.87]	0.420 [10.67]	0.094 [2.39]	0.020 [0.508]
MRB03	0.406 [10.31]	0.500 [12.70]	0.110 [2.79]	0.020 [0.508]
MRB05	0.562 [14.27]	0.650 [16.51]	0.187 [4.75]	0.032 [0.813]
MRB06	0.500 [12.70]	0.600 [15.24]	0.218 [5.54]	0.032 [0.813]
MRB10	0.875 [22.22]	0.975 [24.76]	0.312 [7.92]	0.032 [0.813]
MRB12	1.188 [30.18]	1.280 [32.51]	0.312 [7.92]	0.032 [0.813]

## Material Specifications
· Element: Copper-nickel alloy or nickel-chrome alloy
· Core: Alumina Ceramic
· Coating: High-temperature silicone
· Terminals: Tinned copper clad steel
· End Caps: Stainless steel

## Part Numbering
Global Part Number: MRB02250R0FE08
· MRB02: Global Model
· 250R0: Value (250 Ohms)
· F: Tolerance (±1%)
· E08: Packaging Code (Tape/reel)

## Disclaimer
· Products are subject to change without notice.
· Vishay disclaims all liability for errors, inaccuracies, or incompleteness in datasheets.
· Not designed for use in medical or life-saving applications without specific authorization.