HP C3903A

HP C3903A Toner Cartridges

HP C3903A Toner Cartridges, HP 03A

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Tonerandinkjetstore.com provides high quality compatible & OEM printer cartridges & supplies for the HP 03A Toner. Our compatible HP C3903A toner cartridges are guaranteed to meet or exceed the factory cartridge specifications, and are backed by our Lifetime Cartridge Warranty. We also carry a full line of OEM cartridges backed the original manufacturers one year warranty.

Desktop laser printing started for many offices with the LaserJet 5P and 6P, and the survivors among them still take the same cartridge they always did: the HP 03A (C3903A). From the LaserJet 5P and 5MP through the LaserJet 6P and 6MP, one compact black cartridge serves the whole personal-laser family — no high-yield version, no variants, no confusion. These machines sip toner, so a single 03A lasts a lightly used desk printer a good while. Clever Supplies keeps the cartridge available as the genuine OEM HP original and as a compatible, a choice that usually resolves on price since the printers themselves are long paid for. Badge reads 5P or 6P? This is the toner.

Works with these HP printers

Frequently Asked Questions

Where do I find the cartridge number on my LaserJet 6P?

Open the printer's top cover and look at the label on the installed cartridge — it will read C3903A (or 03A). The printer's manual lists it too. Any 5P or 6P variant takes this same cartridge.

Is it still worth buying genuine HP 03A for such an old printer?

That depends on how you value the printer. The genuine HP 03A is the factory original; compatible 03A cartridges cost less and print the same black text these printers were designed for. Most owners of surviving 5P and 6P machines choose compatibles, since the printer's remaining lifespan rarely justifies premium supplies.

I print rarely — how should I store a spare 03A?

Leave it sealed in its original packaging, stored flat at room temperature away from heat and direct sun. Toner doesn't expire the way ink does, so a sealed spare stays good for a long while — handy for a printer that only wakes up occasionally.