The LED 5mm Green Clear Pack Good Quality (1000Pcs) is a high-volume supply of standard T-1 3/4 (5mm) through-hole light-emitting diodes engineered for high-visibility status panels, industrial automation indicators, custom illumination arrays, optical instrumentation, and commercial electronics manufacturing. Utilizing high-efficiency InGaN (Indium Gallium Nitride) semiconductor die technology paired with a crystal-clear, non-tinted optical epoxy lens, each diode produces a focused, vibrant emerald green beam (515nm–525nm) with luminous output ranging from 15,000 to 20,000 mcd at a narrow 20° to 25° viewing angle. Featuring a standard 2.54mm lead pitch, high energy efficiency, and direct compatibility with 3.3V and 5V logic systems, this bulk pack is tailored for production lines, educational STEM kits, and high-density PCB arrays.

Specifications

• Package Quantity: 1000 Pieces per Bulk Pack (Moisture-Barrier Anti-Static Bag)
• LED Size / Form Factor: Standard T-1 3/4 (5 mm Diameter Base)
• Emitted Color: Pure Green / Emerald Green (True Green Spectrum)
• Dominant Wavelength (λ_d): 515 nm to 525 nm (Peak: ~520 nm)
• Lens Type: Water-Clear / Non-Tinted Transparent Optical Epoxy
• Luminous Intensity (I_v): 15,000 mcd to 20,000 mcd (Typical at I_F = 20 mA)
• Viewing / Beam Angle (2θ_1/2): 20° to 25° (Narrow, high-focus spotlight beam)
• Forward Voltage (V_F):
  • Typical: 3.0 V to 3.2 V DC
  • Maximum: 3.4 V DC (at I_F = 20 mA)
• Continuous Forward Current (I_F): 20 mA (Recommended operating current: 15 mA to 20 mA)
• Peak Pulsed Forward Current (I_FP): 50 mA to 100 mA (Duty cycle 1/10 at 1 kHz)
• Reverse Breakdown Voltage (V_R): 5.0 V Max.
• Reverse Leakage Current (I_R): ≤ 10 μA (at V_R = 5 V)
• Power Dissipation (P_D): Approx. 70 mW to 80 mW per LED
• Lead / Terminal Type: Radial Through-Hole (THT) Tinned Copper / Silver Alloy Leads
  • Anode Lead (+): Longer Pin (Approx. 27 mm to 29 mm)
  • Cathode Lead (-): Shorter Pin (Approx. 25 mm to 27 mm) with Flat Rim Base
• Lead Spacing / Pitch: Standard 2.54 mm (0.1 Inch Breadboard Pitch)
• Operating Temperature Range: -40°C to +85°C
• Soldering Temperature Tolerance: 260°C for max. 3 to 5 seconds (≥ 2 mm distance from base)

Features

• Ultra-High Luminous Intensity (Up to 20,000 mcd): Emits a concentrated, high-intensity true green beam providing exceptional daylight visibility and long-range visual signaling.
• Optical Water-Clear Lens: High-transmittance crystal epoxy encapsulation maximizes photon output without internal spectral filtering.
• High-Efficiency InGaN Semiconductor Die: Delivers high luminous efficacy with low thermal generation and stable optical performance over extended operational cycles.
• Clear Physical Polarity Indicators: Features standardized lead-length differentiation (long anode) and a distinct flat notch on the cathode rim of the plastic casing for error-free assembly.
• Economical 1000-Piece Bulk Pack: High-volume packaging optimized for PCB assembly lines, maker laboratories, school STEM robotics kits, and repair shops.

Common Applications

• Industrial Status & "Ready/OK" Indicators: High-visibility green indicators for machine operation, safety interlocks, and power online status.
• Traffic Signaling & Model Railway Lights: Go signals for model railway layouts, miniature traffic lights, and educational robotics arenas.
• Illuminated Signage & Channel Letters: High-contrast backlighting for acrylic channel letters, lightboxes, and architectural models.
• Automotive & RC Model Lighting: Running lights, dashboard accents, and scale vehicle illumination.
• Microcontroller & STEM Prototyping: Breadboard logic circuits, status readouts, and timing experiments using Arduino, ESP32, or Raspberry Pi.

Usage Tips

• Current-Limiting Resistor (MANDATORY): True green InGaN LEDs exhibit an exponential current rise once forward voltage exceeds 3.0V. Never connect directly across a power rail without a series current-limiting resistor:
  • Calculate using: R = (V_Supply - V_F) / I_F
  • For a 5V DC Supply (I_F = 15 mA, V_F = 3.1 V): R = (5.0V - 3.1V) / 0.015A ≈ 126.7 Ω → Use a standard 130Ω to 150Ω (1/4W) resistor.
  • For a 12V DC Supply (Single LED at 15 mA): R = (12.0V - 3.1V) / 0.015A = 593 Ω → Use a standard 620Ω to 680Ω (1/4W) resistor.
  • For a 12V DC Supply (3 LEDs in Series at 15 mA): R = [12.0V - (3 × 3.1V)] / 0.015A = 2.7V / 0.015A = 180 Ω → Use a standard 180Ω (1/4W) resistor.
• Direct 3.3V Logic Driving: When powering directly from 3.3V microcontrollers (ESP32, Raspberry Pi Pico), place a small 10Ω to 22Ω resistor in series to protect the GPIO driver pin from current spikes (I_max ≈ 12 mA).
• Identifying Polarity:
  • Positive (+ / Anode): Longer lead wire.
  • Negative (- / Cathode): Shorter lead wire, flat-notched edge on the epoxy lens skirt, and larger anvil flag inside the package.
• Soldering Precautions: Maintain iron temperature between 260°C and 300°C and complete soldering within 3 seconds per lead, keeping the iron tip at least 2mm away from the epoxy body.
• Optical Safety Warning: Due to the high luminous intensity (20,000 mcd focused beam), avoid staring directly into the bare LED lens at close range during high-current operation.