7 mm 3-Digit 7-Segment Display, Common Anode (2831BS) — Red 🔴

The 2831BS is a compact 3-digit 7-segment LED display with a digit height of 0.28 inch (7 mm). Featuring a common anode configuration and ultra-bright red emission, it delivers high-contrast numeric indication for clocks, voltmeters, counters, and general-purpose instrumentation. A black face with white segments enhances readability, while the 2.54 mm pin pitch simplifies prototyping and panel integration.

Key Features ⭐

• 3-digit numeric display with 7-segment layout
• Common anode configuration for multiplexed driving
• Ultra-bright red emission (λp 640 nm) for clear visibility
• 0.28 inch (7 mm) digit height — compact yet legible
• High-contrast black surface with white segments
• 12-pin package with 2.54 mm pitch for standard prototyping

🔧 Technical Specifications

• Model: 2831BS
• Number of Digits: 3
• Display Type: 7-segment
• Digit Height: 0.28 inch (7 mm)
• Emission Color: Ultra-bright red
• Connection Type: Common Anode
• Appearance: Black surface with white segments

⚡ Electrical Characteristics (25°C)

• Peak Wavelength (λp): 640 nm
• Forward Voltage (Vf): 1.8 V typical (at 10 mA)
• Reverse Current (IR): ≤ 50 μA (at 5 V reverse voltage)
• Continuous Forward Current: 30 mA per segment
• Peak Forward Current: 200 mA (1/10 duty cycle, 10 kHz)
• Power Dissipation: 100 mW per segment
• Operating Temperature: -20°C to +75°C
• Storage Temperature: -20°C to +85°C
• Soldering Temperature: 230°C for 5 s (1.6 mm below base)

📏 Mechanical Dimensions

• Overall Size: Approx. 30 mm (W) × 10 mm (H) × 7 mm (D)
• Pin Pitch: 2.54 mm
• Total Pins: 12

Typical Applications 🧪

• Digital clocks and timers
• Voltmeters and simple measurement readouts
• Counters and frequency displays
• General numeric indicators in control panels

Integration Notes 🛠️

• Use an appropriate current-limiting resistor for each segment.
• For multi-digit operation, drive via multiplexing and stay within the specified peak and average currents.
• With a common anode device, segments are typically driven by current-sinking outputs.
• Observe maximum ratings and soldering guidelines to ensure long-term reliability.