7 Segment 1.8 inch Common Anode FJS18101BH

Description

7 Segment 1.8 inch Common Anode FJS18101BH

1. General Characteristics

• Display Type: Single-digit 7-segment LED display

• Digit Height: 1.8 inches (45.7mm) – large format for high visibility

• Configuration: Common Anode

• Display Color: Red

• Number of Digits: 1 digit

2. Electrical & Optical Characteristics

3. Physical Dimensions

• Overall Dimensions:

  • Length: 56mm

  • Width: 38mm

  • Height: 11mm (excluding pins)

• Character Size: 1.8″ (45.7mm) tall digits

• Pin Pitch: Standard 2.54mm (0.1″) DIP

4. Environmental Ratings

• Operating Temperature: -40°C to +85°C

• Storage Temperature: -40°C to +100°C (typical for LED displays)

5. Additional Specifications

• Package Weight: 0.44g (per unit)

• Packaging: Tube (typically 32 pieces per tube)

• Mounting: Through-hole soldering

6. Common Applications

• Large digital clocks

• Industrial equipment displays

• Scoreboards

• Instrument panels requiring high visibility

Important Design Notes

1. Current Limiting Required: Always use current-limiting resistors (100–220Ω for 5V operation) on each segment to prevent damage. Calculate using:

   R = (V_supply - V_F) / I_segment
   
   

   1. For 5V supply with 2.0V forward voltage and 20mA current:
      R = (5V - 2V) / 0.02A = 150Ω (use 150Ω or 180Ω standard value)

   2. Common Anode Driving: Connect the common anode pin(s) to positive supply voltage. Drive each segment LOW (GND) through resistors to light them.

   3. Multiplexing: For multiple digits, this is a single-digit display. For multi-digit applications, you’ll need multiple FJS18101BH units.

   4. Brightness Control: Use PWM on the common anode or segment drivers to adjust brightness.

   5. Heat Dissipation: At 20mA per segment (8 segments including decimal point), total current can reach 160mA. Ensure your PCB traces can handle this.