Product Overview
4 Megohm 0.5 Watt High-Resistance Axial Through-Hole Component
Condition
Unused new old stock (NOS). Sold each. Cylindrical molded body measures 10 mm in length with axial leads factory-formed into a 90-degree bend extending 30 mm. Color bands are yellow, black, green, and gold. Leads show clean plating with no prior solder or terminal wear.
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Product Overview
Built with a solid molded core, this vintage carbon composition resistor delivers 4 MΩ of resistance with a 1/2-watt power rating and ±5% tolerance. The solid composition structure provides low inductance and rugged surge handling, ideal for vintage radio service, guitar amplifier maintenance, and analog audio restoration.
Key Features
- Resistance value of 4 MΩ (4,000,000 ohms)
- Tolerance rating of ±5% indicated by gold fourth band
- Power dissipation rating of 0.5 watt (1/2 W)
- Solid molded carbon composition construction
- Pre-formed 90-degree bent leads for through-hole or point-to-point mounting
- Body dimensions of 10 mm length by 3.5 mm diameter with 30 mm lead extension
Applications
- Restoring vintage tube guitar amplifiers and vacuum tube radio receivers requiring period-correct carbon composition parts
- Serving as high-value bleeder resistors or bias network elements in vintage test gear and audio circuits
- Building DIY synthesizer modules, effect pedals, and tube preamps where low inductance under pulse loads is desirable
Frequently Asked Questions
What do the color bands on this resistor indicate?
The four color bands decode to 4 MΩ at ±5% tolerance: yellow represents 4, black represents 0, green indicates a multiplier of 100,000, and gold indicates 5% tolerance.
Can the pre-bent leads be straightened for standard axial mounting?
The leads are formed at a 90-degree angle for vertical or radial-style insertion. While copper-plated leads can be gently adjusted, repeated bending close to the body should be avoided to protect the molded seal.
What type of circuit layout do these formed leads fit?
The leads are formed at 90 degrees with 30 mm of length, designed for vertical mounting into circuit boards or direct point-to-point terminal wiring without requiring hand bending.
High-meg resistors are the quiet anchors in tube circuits and analog grids, holding steady where modern films can be touchy. Solder this into your chassis and let the circuit run the way it was originally built to.
