This article covers PFU HHKB Professionalシリーズ キートップセット 日本語配列 中央印字 雪 PD-KB420KTYC.

Overview

The PFU HHKB Professional Keycap Set (model PD-KB420KTYC) is a genuine replacement keycap set designed for Japanese-layout HHKB Professional keyboards. Featuring a center-printed legend and a pristine "Snow" white color, this set includes all 69 keycaps needed to fully refresh your keyboard. The package also comes with a keycap puller and a detailed instruction manual, making the swap straightforward even for first-timers. This set is the official spare part from PFU, ensuring the same quality, feel, and durability as the original keycaps. It is perfect for replacing worn, yellowed, or damaged keycaps, or for switching to a blank keycap layout to practice touch typing. Compatible with multiple HHKB Professional models (JP, JP Type-S, BT, HYBRID Type-S, HYBRID), it is the only genuine solution for Japanese-array HHKB users.

Connectivity & Compatibility

These keycaps are designed exclusively for the Japanese-layout variants of the HHKB Professional series. They are officially supported on the following models: HHKB Professional JP HHKB Professional JP Type-S HHKB Professional BT HHKB Professional HYBRID Type-S * HHKB Professional HYBRID The keycaps fit over the electrostatic capacitive switch stems; the switch mechanism itself is unchanged. Replacement is a user-level operation – please follow the included manual to avoid scratching the keycaps or damaging the switches. Note that this set is NOT compatible with US/ANSI layout HHKB models or any other keyboard brand.

Product Info

The PFU HHKB Professional Keycap Set is sold as an official PFU accessory. It is widely available through Japan and other major retailers at around ¥7,590. In terms of market positioning, this is a premium replacement part – it is the only genuine option for Japanese-layout HHKB owners, offering unmatched color consistency, legend sharpness, and long-term durability compared to third-party alternatives. Included in the box: 69 keycaps (all keys for the Japanese layout), one keycap puller, and an instruction manual covering swap procedures and key placement diagrams. Warranty coverage may vary by seller; check the listing for details.

Best Use Cases

Long-time HHKB Professional owners: If your keycaps have become shiny from years of use, yellowed, or simply worn out, this set restores the original look and feel. It is the most cost-effective way to rejuvenate a high-end keyboard. Learners of touch typing: By replacing the printed keycaps with blank ones (sold separately), you can force yourself to type without looking. This keycap set includes the puller and manual, making it a great starting point for that customization. * Aesthetic customization enthusiasts: The "Snow" white keycaps offer a clean, minimalist look that contrasts beautifully with the standard black case. Ideal for bright, modern desk setups or for users who want a distinctive appearance without sacrificing build quality.

Product Disclosure (Amazon)

  • Manufacturer: HHKB
  • Seller: PFUダイレクト
  • Fulfilled by: PFUダイレクト
  • ASIN: B0BFHB9SX6
  • Note: This article covers a manufacturer-made product based on Amazon listing details.