B1811NB--05D000113U1930

Overview

The B1811NB--05D000113U1930 is a surface-mount phototransistor manufactured by Harvatek Corporation. It features a top-view orientation and utilizes an 0805 (2012 metric) package with dimensions of 2.0 mm length, 1.3 mm width, and 1.1 mm height. The device operates at a peak wavelength of 940 nm and has a maximum collector current rating of 20 mA. It supports a collector-emitter breakdown voltage of up to 35 V and maintains a maximum dark current of 100 nA. The component is designed for operation within a temperature range of -40°C to 85°C.

Feature Summary

• Top-view configuration for direct optical alignment
• Compact 0805 surface-mount footprint
• High-speed infrared detection capability

Applications

• Optical encoders
• Position sensing systems
• Consumer electronics proximity detection

Procurement Notes

Verify the specific suffix codes against official datasheets to confirm exact spectral and electrical characteristics. Confirm RoHS compliance status and moisture sensitivity level requirements prior to placement on the manufacturing line. Ensure storage conditions align with manufacturer guidelines to maintain component integrity.

Selection Notes

Select this component when a compact, high-sensitivity infrared receiver is required for tight PCB layouts. The 0805 package size offers a balance between optical aperture area and board space efficiency. Consider the 940 nm wavelength compatibility with standard IR emitters for optimal signal-to-noise ratio in ambient light conditions.

Part Context

This part belongs to Harvatek's portfolio of optoelectronic sensors, specifically within their phototransistor series. These components are engineered for reliable performance in consumer and industrial applications requiring precise optical switching or analog light detection. The product line emphasizes miniaturization and robust environmental stability.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic replacements may differ in response time or spectral sensitivity. Verify pinout compatibility and thermal characteristics before integrating alternative sources into existing designs.