3V 100mA Edison Bulb LED Filament 38mm – Red

3V 100mA Edison Bulb LED Filament 38mm – Red offers a vintage aesthetic combined with modern semiconductor efficiency, making it a perfect choice for decorative lighting and creative DIY projects. This flexible 38mm filament consists of multiple LED chips connected in series on a transparent substrate, which creates a continuous and vibrant red glow when powered. Furthermore, the low voltage requirement of just 3V allows you to drive this component directly from two AA batteries or a single lithium cell. Consequently, hobbyists can easily integrate these filaments into portable props, scale models, or custom Edison-style lamps without needing complex high-voltage circuitry. Therefore, this versatile LED filament serves as an ideal bridge between classic glass bulb design and contemporary energy-saving technology.

Key Features:

• High-Efficiency Output: The filament delivers a consistent, 360° radiant red light while maintaining a low thermal footprint compared to traditional tungsten wires.
• Flexible Design: Engineers constructed the filament with a slight flexibility, allowing for creative mounting in curved or uniquely shaped glass enclosures.
• Battery Compatible: The 3V operating threshold simplifies the power supply design, making it highly compatible with standard battery-operated microcontrollers and small power banks.
• Vibrant Color: Emits a deep red wavelength, ensuring high visibility and a warm atmosphere for atmospheric lighting setups.
• Long Service Life: Designed for longevity, this solid-state component outlasts traditional filament bulbs by thousands of hours under proper current-limited conditions.

Technical Specifications:

• Operating Voltage: 2.8V to 3.2V (3V Nominal)
• Forward Current: ≈ 100 mA
• Power Consumption: ≈ 300 mW
• Luminous Color: Red
• Wavelength: 620 nm – 630 nm
• Beam Angle: 360° Omnidirectional
• Dimmable: Yes (Via PWM or current-controlled DC voltage)

Mechanical Specifications:

• Substrate Material: Ceramic or high-transparency synthetic polymer
• Filament Type: COB (Chip-on-Board) LED string
• Polarity Marking: The positive end typically features a small hole or specific notch for easy identification.
• Durability: Highly resistant to mechanical shock and vibration compared to glass-encased filaments.

Dimensions:

• Total Length: ≈ 38.0 mm
• Effective Light Length: ≈ 34.0 mm
• Width: ≈ 1.5 mm to 2.0 mm
• Weight: < 0.1 g

Pinout and Wiring:

• Positive Terminal (Anode): Identify the end with the marked hole or small tab; connect this to your 3V positive rail through a current-limiting resistor.
• Negative Terminal (Cathode): Connect the unmarked end to the ground (0V) of your circuit.
• Wiring Note: Always use a current-limiting resistor (typically 10 Ω to 22 Ω for 3.3V supplies) to prevent thermal runaway and permanent damage to the LED chips.

Datasheet Reference:

• Download Generic 3V LED Filament Datasheet

Commonly Used in:

• Custom Retro Lamps: Creating unique, modern interpretations of the classic 19th-century Edison light bulb.
• Scale Modeling: Providing realistic, warm-red lighting for architectural models, miniature dioramas, and train sets.
• Cosplay Props: Integrating glowing elements into costumes and accessories where weight and battery life are critical factors.

Applications:

• DIY Lighting Projects: Serves as the primary light source for personalized desk lamps and artistic installations.
• Indicator Lights: Used as large, stylish indicator bars in industrial-themed control panels or vintage-style audio equipment.
• Festive Decorations: Perfect for high-end holiday decor and custom-made neon-alternative signs.

Equivalent Models:

• Standard 38mm LED Filament: Available in Warm White or Green, however, the Red variant is specifically tuned for lower-frequency spectral output.
• COB LED Wire: Larger flexible COB strips can offer similar 360° lighting but often require much higher operating voltages.

Package Includes:

• 1 x 3V 100mA Edison Bulb LED Filament 38mm – Red