The part number **CWCBLPM1.W1-LZMZ-S2S3** refers to a high-performance **OSRAM OSTAR Projection Compact LED**, specifically designed for use in stage lighting, projectors, and architectural illumination. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. General Product Identification | Parameter | Description | | :--- | :--- | | **Manufacturer** | ams OSRAM | | **Series** | OSTAR Projection Compact | | **Color** | Cold White (Ultra White) | | **Package Type** | Ceramic package with integrated glass cover | --- ### 2. Part Number Breakdown (Decoding) To understand the performance levels, we look at the suffix codes: * **CW**: Color (Cold White). * **CBLPM1.W1**: Internal chip generation and package identifier. * **LZMZ**: **Luminous Flux (Brightness)**. Represents a specific range of lumens (typically between 1120 lm and 1800 lm depending on driving current). * **S2S3**: **Color Binning**. Defines the specific Chromaticity (x,y coordinates) to ensure color consistency across a batch. --- ### 3. Key Technical Specifications The electrical and optical performance is characterized by high power density and thermal efficiency. | Feature | Typical Value | | :--- | :--- | | **Forward Current (Nominal)** | 6000 mA (6A) | | **Forward Current (Max)** | 8000 mA (8A) | | **Forward Voltage (Typical)** | 2.95 V | | **Viewing Angle** | 120° (Lambertian emitter) | | **Max Junction Temp** | 150°C | | **Thermal Resistance** | 0.8 K/W (Very low, allowing for high heat dissipation) | --- ### 4. Electronic Design Considerations #### A. Thermal Management Because this LED operates at very high currents (up to 8A), the heat generated per square millimeter is intense. A Metal Core Printed Circuit Board (**MCPCB**) or a direct copper bond (DCB) substrate is mandatory. The low thermal resistance (0.8 K/W) means heat moves quickly from the chip to the heatsink. #### B. Driver Requirements * **Constant Current Source:** This LED must be driven with a constant current driver. Small fluctuations in voltage can lead to massive jumps in current, which could destroy the part (Thermal Runaway). * **PWM Dimming:** It is compatible with Pulse Width Modulation (PWM) for dimming, which is standard in projector and stage lighting applications. #### C. Optical Characteristics The "W1" chip configuration usually features a large emitting surface (approx. 2.1 mm²). The glass window allows for easy integration with secondary optics such as condensers or TIR lenses without damaging the LED die. ---