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Two black toner cartridges in sealed packaging

eSquareOne

eSquareOne S1-BR-TN336BK-B2 Black Toner Cartridge 2-Pack (4000 pages)

SKU CH-XBQ6-Z6APX

Two-pack of compatible black toner cartridges replaces Brother TN336BK and TN331BK, yielding 4000 pages each for select HL and MFC printers

  • Cartridge Quantity2 Pack
  • Cartridge ColorBlack
  • Replacement BrandBrother
  • Replacement ModelTN336BK TN331BK
  • Compatible ProductsBrother HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT, MFC-L8600CDW
  • Approximate Page Yield4000 Pages
  • Print up to 4000 pages per cartridge at 5% coverage
  • Two-pack provides a spare cartridge for continuous printing
  • Compatible with Brother HL-L8250CDN, HL-L8350CDW and MFC-L8600CDW
  • Engineered for consistent quality and reliable output
  • Operates from 10 °C to 32.5 °C and stores from -20 °C to 40 °C

Compatible Black Toner 2-Pack

This two-pack of black toner cartridges replaces Brother TN336BK and TN331BK supplies. It fits the HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT, MFC-L8600CDW and MFC-L8850CD printers. Each cartridge is rated for 4000 pages at 5% coverage. Offices needing high-volume monochrome output can install both units for extended print runs.

Sustained Print Consistency

The cartridges are engineered to maintain yield and reliability across the full 4000-page rating rather than only in short bursts. Quality-control guidelines and ISO 9001 and ISO 14001 certified processes support consistent density from the first page to the last. Large batch jobs on the listed Brother models therefore finish without unexpected fade or streak defects.

Operating Conditions and Efficiency

Normal use stays within an operating temperature range of 10 to 32.5°C and 20 to 80% relative humidity. Storage tolerates -20 to 40°C at the same humidity band. The compatible design draws power only during the printer’s standard imaging cycle, adding no extra thermal load or acoustic noise beyond the host device’s normal profile.

Highlights

  • Print up to 4000 pages per cartridge at 5% coverage
  • Two-pack provides a spare cartridge for continuous printing
  • Compatible with Brother HL-L8250CDN, HL-L8350CDW and MFC-L8600CDW
  • Engineered for consistent quality and reliable output
  • Operates from 10 °C to 32.5 °C and stores from -20 °C to 40 °C

Specifications

BrandeSquareOne
ModelS1-BR-TN336BK-B2
Cartridge Quantity2 Pack
Cartridge ColorBlack
Replacement BrandBrother
Replacement ModelTN336BK TN331BK
Compatible ProductsBrother HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT, MFC-L8600CDW, MFC-L8850CD
Approximate Page Yield4000 Pages
Coverage5%
TypeCompatible
FeaturesThis is an eSquareOne alternative replacement for OEM product, replaces TN336BK TN331BK black toner cartridge. eSquareOne Toner cartridges are engineered to meet the highest standard of quality, yield and reliability.
OptionTN336BK
Operating Humidity20 to 80% RH
Storage Humidity20 to 80% RH
Operating Temperature10 to 32.5°C
Storage Temperature-20 to 40°C

Questions about this item

How much power does the S1-BR-TN336BK-B2 cartridge draw when the printer runs continuously?

The cartridge itself consumes no power; the host printer manages all energy use during operation.

Which Brother printer must I already own for this 2-pack to work?

Compatible models are HL-L8250CDN, HL-L8350CDW, HL-L8350CDWT, MFC-L8600CDW and MFC-L8850CD.

Will the TN336BK replacement function in an older Brother machine that uses the TN331BK code?

Yes, the cartridge replaces both TN336BK and TN331BK, so it fits printers specified for either code.

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