New v4 Korry SMD PCB – Dual‑Sided, Pre‑Built, Ready for the Next‑Gen Overhead and future builds.
 
Introducing the New v4 Korry SMD PCB, engineered from the ground up to be the most accurate, durable, and user‑friendly Korry solution we’ve ever produced. This version moves to a professionally manufactured, dual‑sided SMD PCB with all components pre‑fitted, offering unmatched reliability and ease of installation for your simulator panels.
 
Key Features
✔ Premium Dual‑Sided SMD PCB Construction
Unlike previous versions, the v4 uses a fully pre‑assembled double‑sided PCB. While more expensive to manufacture, the results speak for themselves:
increased durability
clean, repeatable performance
compact design compatible with new Korry cases
Zero hand‑soldering of resistors, leds or diodes required
All resistors and diodes are pre‑installed and pre‑configured for 5V operation, so you can simply plug in and go.
 
✔ Two Variants: Common Anode & Common Cathode
The v4 is available in two wiring formats to support a wide range of cockpit builds:
Common Anode – 2×3 Dual‑Row Header
Common Cathode – 2×2 Dual‑Row Header
 
Common cathode would be suited for connection to an arduino directly, the Common Annode is for shift registers or to utilse the shift registers of the BOB (Break Out Board)
 
The use of dual‑row Dupont header pins ensures:
a firmer, more reliable connection than single‑row pins
flexibility to solder wires directly or
use standard female Dupont connectors (2×3 or 2×2 depending on version)
This makes wiring simpler, cheaper, and more secure.
 
✔ Realistic White LED Core with True‑Colour Lenses
Every Korry PCB uses high‑quality white SMD LEDs. Just like the real aircraft, the colour is determined by the caption lens, not the LED.
This means:
identical brightness across all colours
crisp, even illumination
no mismatched intensities between captions
Exactly how a Korry should behave.
 
✔ Dual ALPS Switch System for Perfect Feel
Each PCB includes two ALPS tactile switches, mounted symmetrically for:
even pressure distribution
a positive, premium “click” feel
reliable activation regardless of press angle
Perfect for sim builders wanting both realism and robustness.
 
✔ Three Operational Modes
The v4 Korry PCB supports multiple configurations depending on your build:
Caption Only – Illumination without button functionality
Caption + Press‑to‑Test – Authentic aircraft behaviour
Caption + Press‑to‑Test + Functional Button – Send inputs back to your sim
This flexibility makes the v4 suitable for everything from MIP annunciators to a full overhead.
 
✔ Required for Upcoming Overhead Build
These PCBs are the standard moving forward for all 737DIYSIM overhead panels.
Every new panel design will utilise the v4 Korry PCB system for consistent mounting, illumination, and wiring.
 
Compatibility Notes
 
New Korry Cases Required
Because of the new dual‑sided layout and switch positioning, the v4 PCB must be used with the updated Korry case design.
Ensure you have:
the correct CAD/STL files (resin printing highly recommended)
compatible 737DIYSIM caption lenses (for true‑to‑life colour and fit)
AVAILABLE HERE
 
The Ultimate Replica Korry System
The v4 Korry SMD PCB represents the most accurate, reliable, and user‑friendly Korry design we’ve produced. While the unit is slightly more expensive due to the dual‑sided construction and pre‑fitted SMD components, the improvements in quality, realism, and ease of use make it the new gold standard for cockpit builders.