Product Overview
Motorola 220k Ohm 1/8W Carbon Resistor File Card - 10 Through-Hole Axial Units, 10% Tolerance, NOS
Condition
Unused NOS. Ten brown-bodied axial resistors remain loaded on the original Motorola file card. Card tab stamped 0611009C17 and marked 220K-10-1/8, confirming resistance, tolerance, and power rating. Reverse of card carries part number 54-84066A05, an EIA color code reference chart, and PRINTED IN U.S.A. Minor crease and light edge wear on the card; resistors show no damage. Sourced from an electronics distributor consolidating inventory.
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Product Overview
Motorola 0611009C17 - a file card of 10 axial through-hole resistors rated 220k Ohm, 1/8W, 10% tolerance. Carbon composition or carbon film element construction typical of this era of Motorola component manufacturing. Each resistor shows a Red-Red-Yellow-Silver band configuration consistent with 220k Ohm at 10% tolerance. The file card format was Motorola's standard packaging for component distribution to service shops and assembly lines.
Key Features
- Resistance: 220k Ohm (220,000 Ohms)
- Power rating: 1/8W (0.125W)
- Tolerance: 10%
- Lead style: Axial through-hole
- Quantity: 10 resistors per file card
- Motorola part number: 0611009C17 (stamped on card tab)
- Secondary card reference: 54-84066A05 (printed on reverse)
- Country of origin: USA (printed on card)
Applications
- Desoldering a drifted resistor from a vintage radio chassis and dropping in a period-correct Motorola replacement to keep the restoration honest
- Sourcing the right carbon resistor for a tube amplifier repair where matching the original component type matters to the builder
- Breadboarding a voltage divider or bias network in a retro-style audio project where vintage parts are part of the design intent
- Stocking a small repair bench with NOS 220k resistors for ham radio and vintage communications gear service calls
- Adding to a vintage component collection - the intact Motorola file card format with original printing is part of the appeal for collectors
Frequently Asked Questions
Are these carbon composition or carbon film?
The research notes describe the element as vintage carbon composition or carbon film construction. The 10% tolerance is consistent with both types from this era. The specific element type is not confirmed beyond that description.
Do these work as drop-in replacements for modern 220k 1/8W resistors?
Electrically, yes - same resistance, same power rating. Buyers sourcing these for high-precision or low-noise applications should note that vintage carbon-type resistors carry wider tolerances and higher noise characteristics than modern metal film types. For vintage restorations and general-purpose circuits, they are direct replacements.
What does the 1/8W power rating mean in practice?
The resistor can dissipate up to 0.125 watts continuously without damage. For most signal-level circuits - bias networks, voltage dividers, pull-up and pull-down applications - 1/8W is sufficient. Verify that your circuit's current and voltage do not push dissipation above that limit before installing.
Is the file card included?
Yes. All 10 resistors ship on the original Motorola file card as pictured.
These resistors have been waiting on that card since the days when Motorola printed their own color code charts on the back. Someone's vintage radio has a bad 220k - now you know where to find the right one.
