When it comes to designing human-machine interfaces (HMIs) for industrial or medical devices, every pixel and milliwatt matters. The SFTC400B-8951AN from Saef Technology Limited is a 4-inch TFT LCD module that stands out for its 480×480 square resolution and robust performance—making it an ideal choice for applications where clarity, reliability, and compactness are critical.
Unlike conventional rectangular displays, the square 480×480 format offers a balanced viewing area, perfect for displaying circular gauges, control panels, or diagnostic data without wasting space. With an active area of 71.86mm x 70.18mm and a slim profile of just 1.9mm, this module fits seamlessly into space-constrained designs.
The display supports an 80-degree viewing angle in all directions (up, down, left, right), ensuring readability from virtually any perspective. This is especially valuable in multi-operator environments such as factory floors or medical carts.
Rated for an operating temperature range of -20°C to 70°C and storage up to -30°C to 80°C, the SFTC400B-8951AN is built to perform in challenging environments. Its 3.3V logic voltage and SPI+RGB interface offer flexibility for embedded systems, while the ST7701S driver IC ensures stable and efficient control.
The LED backlight system uses a 4S2P configuration with 8 LEDs, delivering a typical brightness of 450 nits at just 40mA. This balance of luminance and power efficiency makes it suitable for portable or battery-powered devices.
Industrial control panels
Medical monitoring devices
Test and measurement equipment
Home automation interfaces
Whether you're upgrading an existing HMI or designing a new one, the SFTC400B-8951AN from Saef Technology Limited offers a reliable, high-performance display solution backed by clear optical performance and solid electrical specs.
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