SFBM2004HX-A-Y 20x4 Character LCD Display Module 3V STN Yellow/Green SPLC780D Compatible Contrast Adjustment VO Pin Easy Tuning

Professional-Grade 20x4 LCD for Industrial & Embedded Systems

The SFBM2004HX-A-Y is a high-reliability 20×4 character LCD module engineered for demanding applications in automation, medical devices, and laboratory equipment. Operating at 3V with ultra-low power consumption (0.15mA typ.), it delivers exceptional performance across industrial temperature ranges (-20°C to +70°C).

Key Technical Advantages

• SPLC780D Controller Compatibility:Seamless integration with industry-standard HD44780 protocols—accelerate development with existing code libraries and reference designs.
• Superior Optical Performance:STN Yellow/Green transflective display with 6 o’clock viewing angle ensures clarity under ambient lighting. Backlight uniformity >75% (100 cd/m² typ.) eliminates hot spots.
• Engineered for Harsh Environments:

1. ​ESD Hardened: ±8kV air/±4kV contact discharge protection
2. Validated per MIL-STD-105E (Major Defect AQL 0.4)
3. Humidity resistant (20-90% RH non-condensing)

Technical Specifications Deep Dive

• Timing Control: 270kHz oscillator, 450ns E-pulse width (Write Mode)
• Memory Mapping: DDRAM addresses support 4-line wraparound (Hex: Line1=00-13, Line2=40-53)
• Electrical Safety: VDD=2.8-3.5V, VLCD=VDD-12V to VDD-0.3V
• Mechanical Precision: 0.56mm dot pitch, 98×60mm footprint with 13.2mm max. thickness

Compliance & Longevity

• Full ROHS 2011/65/EU, REACH 1907/2006/EC compliance
• 1-year warranty with >120hrs validation in thermal cycling (-30°C↔80°C) and vibration tests (10-55Hz XYZ axis)

For Design Engineers

Download pinout diagrams, timing waveforms (Page 9), and DDRAM mapping tables in the full datasheet. Compatible with ARM, PIC, and AVR MCUs.

Mechanical Dimensions

Specifications

Absolute Maximum Ratings

DC Electrical Characteristics

Backlight Characteristics

Product Image

STN Blue Mode Optional

Founded in 2007, ShenZhen SAEF Technology Co., Ltd is committed to manufacturing and developing high-quality products for industrial LCD display, including TFT LCD, OLED, monochrome TN/STN/FSTN LCM display modules and system integration solutions. Saef Technology has become a leading enterprise in the field of small and medium size displays, and its continuous innovation has enable it to obtain a number of invention patents in the display field. With more than 14 years of experience, providing competitive products and services through stable product quality and professional pre-sales and after-sales service, SAEF technology has won the recognition of many international big brand companies and established long-term and stable cooperation with them.

Saef Technology is an ISO9001 and environmental ISO 14001 certified manufacturer. We provide 1 to 10 years warranty for all the company’s products. We are not only a display manufacturer but also a solution partner for our customers.

As a leading manufacturer in the display module market, Saef Technology will continue to focus on the research and development of new technologies such as TFT, OLED display, embedded systems integration solutions, and we will continue to provide customers display products with high cost performance.