Ohmite Little Rebels Carbon Film Resistors Datasheet

Category: Electronics, Ohmite Manufacturing Co, Resistors

Overview

The datasheet details the specifications and features of Ohmite’s Little Rebels, which are economical, low wattage, carbon film resistors. These resistors are constructed with a pure carbon film deposited on a high-grade ceramic body, and they come with solder-coated copper leads. They are designed for electrical and electronic applications that require compact size, low power ratings, and high performance and reliability.

Electrical Specifications

Little Rebels resistors exhibit a tolerance of ±5% and are available in a range of E24 Ohmic values. They offer an impressive temperature coefficient range, varying from -450 ppm/°C to -800 to -1500 ppm/°C depending on the resistance value. These resistors also have defined maximum overload voltages, spanning from 400 volts to 1000 volts according to the series wattage.

Derating Curve

A linear derating from 100% at +70°C to 0% at +155°C is specified, ensuring the resistor operates within its safe power limits across a wide temperature range.

Physical Dimensions and Ratings

Different series of the Little Rebels are listed with their corresponding wattages, resistance range, physical dimensions (length and diameter), maximum working voltage, and lead gauge. For example:

Series OJ: 0.125-watt rating, resistance from 1.0 ohm to 1M ohm, with up to 200 volts maximum working voltage.

Series ON: Wattage increases to 1.00 with resistance up to 10M ohms and up to 500 volts working voltage.

The document further includes part numbers for standard resistance values available for each wattage series.

Resistor Cabinet Assortments

The resistors are also available in cabinet assortments, which are detailed on page 34 of the full datasheet. The assortment includes 24 values per decade with the quantity per reel being mentioned for bulk users.

Contact Information

Contact details such as the manufacturing address, telephone number, and email are provided for Ohmite, along with their website URL for additional resources or inquiries.