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Yellow HP Designjet printhead cartridge, rectangular plastic body, 1.1 by 5.63 by 5.2 inches

HP

HP CH645A 761 Yellow Designjet Printhead scanner supply

SKU CH-A6B0-PNDS2 MPN CH645A

Yellow inkjet printhead for HP Designjet T7100 series, 9 pl drop size, 1.1" x 5.63" x 5.2"

  • Product categoryPrinter Accessories
  • Product categoryPrinthead
  • Compatible withHP Designjet T7100 Series Printers
  • DetailsPrint Technology: Inkjet Print Color: Yellow Ink drop size:
  • Product weight0.15 lb (0.07 kg)
  • Key featuresSold as 1 Each.
  • Crisp yellow output for accurate CAD drawings with 9 pl ink drops
  • Low-maintenance printing keeps Designjet T7100 running smoothly with original HP printheads
  • Lightweight printhead at 0.15 lb installs quickly without tools
  • Operates reliably in temperatures from 68 to 77 °F for consistent results
  • Compact 1.1 x 5.63 x 5.2 inch design fits printer carriage precisely

Yellow Printhead for Designjet T7100

The HP CH645A 761 printhead delivers yellow ink for HP Designjet T7100 series printers. It uses inkjet technology with a 9 pl drop size to produce crisp lines and vivid colour. This new unit is sold individually for low-maintenance, high-productivity output. Operate it between 68 and 77º F for best results.

Replaces worn yellow printheads

Swap this unit when the existing yellow printhead shows clogged nozzles or colour deviation. The jump is worth it when print quality drops below professional CAD or GIS standards. Original HP alerts signal when replacement is needed, and the user-replaceable design keeps downtime short. It restores accurate yellow output for renders and presentations.

Limited to Designjet T7100 compatibility

This printhead fits only HP Designjet T7100 series devices; it will not work with other printer families. Storage extremes from -40 to 140º F are tolerated, but operation outside the 68 to 77º F range is not supported. The 1.1 by 5.63 by 5.2 inch form factor and 0.23 lb package weight suit the designated service bay.

How it compares

Measured against everything we stock in Print & Scan Accessories, at today’s prices. Recalculated every night.

Price $224.99
Pricier than about 78% of the 5,855 comparable items (median $91.99).

Specifications

Product
Brand nameHP
Model nameCH645A
Part numberCH645A
Product categoryPrinter Accessories
Size & build
Product weight0.15 lb (0.07 kg)
Shipping weight0.10 kg
Package size146 × 132 × 28 mm
Compatibility
Compatible withHP Designjet T7100 Series Printers

Questions about this item

What are the exact dimensions of the HP CH645A printhead so I can confirm it fits my Designjet T7100 printer?

The printhead measures 1.1 inches wide, 5.63 inches deep and 5.2 inches high.

How do I install the yellow 761 printhead and which step is most often missed?

Open the carriage latch, insert the printhead until it clicks firmly into the yellow slot, then close the latch and run the automatic alignment routine — skipping alignment causes banding.

When will the CH645A yellow printhead need replacement and what indicates it?

The printer monitors nozzle health and displays a replacement alert when the printhead reaches end of life; print quality degradation such as missing yellow lines also signals it is time.

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