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Little Demon^®

Carbon Composition Molded Resistors

Series	Wattage	Ohms	Tolerance	Dimensions (in. / mm)		Max. Voltage	Dielectric VAC	Lead dia.
				Length max.	Diam. max.
OD	0.25	2.2-5.6M	±5%	0.276 / 7.0	0.098 / 2.5	250	500	0.024 /0.60
OF	0.50	2.2-20M	±5%	0.406 / 10.3	0.150 / 3.8	350	700	0.028 /0.70
OA	1.00	2.2-1M	±10%	0.591 / 15.0	0.236 / 6.0	500	1000	0.035 /0.9

Ohmite's Little Demons are small, reliable carbon composition resistors with exceptional strength. They are made tough by a molding process that combines the leads, insulation and resistive element into an integrated unit. Along with their small size, Little Demons perform with low noise, dissipate heat rapidly and offer high temperature stability. Color codes are readable even after prolonged use thanks to a very durable coating that resists abrasions and chipping normally associated with automatic insertion equipment.

FEATURES Molded insulation for high dielectric strength. Rugged construction. High surge capabilities. Comparable to "Mil" RC07, RC20, and RC32 types. SPECIFICATIONS Material Terminals: Solder-coated copper lead. Body: Molded Phenolic Electrical Tolerance: ±5% (OD/OF); ±10% (OA) Derating: Linearly from 100% @ +70°C to 0% @ 130°C

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RESISTOR USE GUIDELINES

Carbon composition resistors are manufactured by extruding a blend of carbon and organic binders inside a phenolic outer body. The extrusion is cut to length, leads inserted, cured, and marked to form a finished resistor. The carbon and binder mixture is adjusted to produce different resistance values. The resistors are sorted for 5%, 10%, and 20% tolerance values.

Carbon composition resistors are able to withstand larger short-term pulses and higher voltages than film resistors and are virtually impervious to ESD events (Electro-static discharge). Carbon composition resistors are also sensitive to moisture and, therefore, storage recommendations should be adhered to. Generally, any moisture absorbed during storage will be "baked out" during the soldering operation. If the product is stored properly the resistance shift during the soldering operation will be minimal, less than 2% or 3%.

Packaging
All resistors are packaged in sealed poly bags with desiccant to maintain a consistent humidity during storage. If parts are removed from the protective plastic bag they should be used as soon as possible or resealed in the plastic bag.

Storage
Ohmite recommends storing carbon composition resistors in a controlled environment at a temperature of 5° to 35°C and relative humidity of less than 60%. Inventory should always be used on a first-in-first-out basis.

BAKE PROCEDURE

A) Heat Treatment

• 110°C ±10°C
• 15 hours

• 1 time only

D) Cautions:

• Solderability - may be affected due to oxidization of lead wire
• Resistance value - some units may not completely recover to original value.
• Soldering heat - some treated product may have substantial resistance change during soldering operation. It is recommended that parts be tested to evaluate soldering heat effects.

PACKAGING

Tape/Reel	OD	OF
Qty./reel	5000	3000
Reel size (mm)	260	260
Qty./carton	40,000	24,000
Gross carton wt. (kg)	12	13
Carton size (m3)	0.04	0.04
Ammo Box
Tape width (mm)	52	52
Qty./box	2000	2000
Qty./carton	30,000	30,000
Gross carton wt. (kg)	10	16
Carton size (m3)	0.03	0.05

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