The term **LED36** typically refers to a standard circular LED array module or a specific type of lamp (often a PAR36 replacement) that utilizes 36 individual Light Emitting Diodes. These are common in stage lighting, off-road vehicle lamps, and architectural spotlights. Below is an explanation of the electronic components and technical specifications involved in an LED36 unit. --- ### 1. Internal Electronic Components An LED36 unit is more than just the light bulbs; it requires a circuitry ecosystem to function safely and efficiently. | Component | Function | | :--- | :--- | | **LED Chips** | Usually 36 individual SMD (Surface Mount Device) or DIP diodes arranged in a series-parallel circuit. | | **Constant Current Driver** | Regulates the electrical current to prevent "thermal runaway" and ensures consistent brightness. | | **PCB (Printed Circuit Board)** | Usually an **MCPCB** (Metal Core PCB) made of aluminum to help dissipate heat away from the LEDs. | | **Bridge Rectifier** | Converts AC input (if used in architectural lighting) to the DC power required by LEDs. | | **Resistors** | Used in simpler versions to limit current, though active drivers are preferred for high-power units. | | **Heat Sink** | An aluminum housing or finned structure that draws heat away from the diodes to extend their lifespan. | --- ### 2. Technical Specifications Depending on the specific model (e.g., a 12V vehicle lamp vs. a 110V stage light), the specs generally fall into these ranges: * **Input Voltage:** 12V DC (Automotive) or 85-265V AC (Universal Stage/Home). * **Power Consumption:** Typically between 5W to 18W, depending on the wattage of each individual LED. * **Beam Angle:** Often controlled by secondary optics (lenses) placed over the 36 LEDs, ranging from 15° (spot) to 60° (flood). * **Luminous Flux:** Usually outputs between 500 to 1,200 lumens. --- ### 3. Circuit Topology In an LED36, the diodes are rarely wired in a single long string. If one LED failed in a single series of 36, the whole lamp would go dark. Instead, they use a **Series-Parallel Array**: ```text [Group 1: 6 LEDs in Series] --+-- [Connected in Parallel] [Group 2: 6 LEDs in Series] --| [Group 3: 6 LEDs in Series] --| ... (up to 6 groups) ``` * **Benefit:** If one LED fails, only its specific row (6 LEDs) goes out, while the remaining 30 continue to operate. --- ### 4. Thermal Management Since 36 LEDs packed into a small diameter generate significant heat, the electronics must include: 1. **Thermal Paste:** Applied between the PCB and the outer casing. 2. **Over-temperature Protection (OTP):** High-end drivers will dim the LEDs automatically if the internal temperature exceeds a safe threshold (usually 85°C).