Content last revised on October 23, 2025.
NL3224AC35-01: A Robust 5.5-inch QVGA TFT-LCD for Industrial HMI Longevity
Product Overview & Key Specifications
Engineered for Operational Integrity in Demanding Field Applications
The NL3224AC35-01 is a 5.5-inch QVGA color TFT-LCD module engineered for long-term operational reliability in demanding industrial environments. Its core value lies in a robust design that ensures consistent performance across wide thermal gradients, making it an excellent component choice for systems where uptime is critical. With key specifications of 5.5” Diagonal | 320x240 QVGA Resolution | 400 cd/m² Brightness | -10 to +70°C Operating Temperature, this display provides a durable and clear human-machine interface (HMI) solution. It directly addresses the engineering challenge of sourcing a reliable display for industrial controls and test equipment that require compatibility with analog signal inputs. Best suited for legacy industrial controls and test equipment requiring a robust QVGA display with analog signal compatibility.
Key Parameter Overview
Decoding the Specs for Enhanced Environmental Reliability
The technical specifications of the NL3224AC35-01 are optimized for industrial applications where environmental resilience is paramount. The parameters below highlight the display's capacity to deliver stable performance in challenging operational contexts.
| Parameter | Specification & Significance |
|---|---|
| Display Size & Resolution | 5.5-inch diagonal with 320 x 240 (QVGA) resolution. Provides clear, concise data visualization for essential HMI tasks. |
| Operating Temperature Range | -10°C to +70°C. This wide range ensures reliable startup and operation in non-climate-controlled environments, from cold storage facilities to hot factory floors. |
| Luminance | 400 cd/m² (typical). Delivers sufficient brightness for readability in typical indoor industrial lighting conditions. |
| Contrast Ratio | 300:1 (typical). Ensures sharp differentiation between colors and text, reducing operator eye strain. |
| Signal Interface | Analog RGB. Offers straightforward integration with a variety of legacy and custom video controllers. |
| Backlight System | Single CCFL with a built-in inverter. This integrated design simplifies the power supply and connection scheme, reducing external component count. |
| Surface Treatment | Anti-glare (AG). Minimizes reflections from overhead lighting, improving screen legibility for operators. |
Download the NL3224AC35-01 datasheet for detailed specifications and performance curves.
Application Scenarios & Value
System-Level Benefits for Legacy Equipment & Industrial Controls
The NL3224AC35-01 is engineered to solve a critical challenge for system integrators and maintenance engineers: upgrading or maintaining equipment that requires a durable, long-life display with analog input compatibility. A primary application is in the retrofitting of legacy Human-Machine Interface (HMI) panels on CNC machines, process controllers, and specialized test and measurement equipment.
Consider the engineering challenge of a failing CRT monitor on a critical piece of manufacturing machinery. Sourcing a modern digital display often requires adding a costly and complex signal converter. The NL3224AC35-01, with its native analog RGB input, can often serve as a more direct, reliable, and cost-effective replacement. Its wide operating temperature range is a crucial factor for reliability. Think of this as the difference between a consumer device that might fail in a hot, unventilated enclosure and a professional tool built to perform consistently day after day on the factory floor. This focus on durability and compatibility is central to why understanding the differences between industrial vs. consumer displays is key to minimizing total cost of ownership. For systems requiring a higher resolution and larger screen size, the related NL6448BC20-30 offers a 6.5-inch VGA (640x480) alternative.
Frequently Asked Questions (FAQ)
Technical Clarifications for Design Engineers
What makes the NL3224AC35-01 a suitable replacement for older CRT or monochrome displays in industrial equipment?
Its primary advantage is the analog RGB interface, which provides direct compatibility with video signals common in legacy systems, minimizing the need for signal conversion hardware. This, combined with its standard QVGA resolution and compact 5.5-inch form factor, simplifies the mechanical and electrical integration process for retrofits.
How does the -10°C to +70°C operating temperature range impact system design for unconditioned environments?
This wide range reduces the need for external heating or cooling components in many applications, simplifying the overall system design, lowering costs, and reducing potential points of failure. It ensures the HMI remains operational and readable during cold starts and in high-temperature industrial processes.
Does the analog RGB interface of the NL3224AC35-01 support both NTSC and PAL signals?
Yes, the display is designed to be compatible with both NTSC and PAL composite video signals through its analog interface, offering versatility for integration with various global video standards common in industrial and test equipment.
A Strategic Component for Asset Longevity
Integrating the NL3224AC35-01 is a strategic decision to extend the operational life of valuable capital equipment. By providing a reliable, compatible, and robust display solution, it helps avoid costly full-system replacements driven by the obsolescence of a single component. This approach supports a more sustainable and economically sound asset management strategy, ensuring critical machinery continues to provide value well beyond its original expected lifespan. The technical foundation of this component is based on well-established TFT-LCD technology from trusted manufacturers like NEC, ensuring a stable and understood performance baseline.
