CPH3122-TL-E

Single Bipolar Transistors Overview

The CPH3122-TL-E is a photomultiplier tube manufactured by Sanyo (now part of Panasonic). This vacuum tube device utilizes a bialkali photocathode to detect low levels of light, converting incident photons into an electron cascade through a series of dynodes. It features a circular end-on window design with a diameter of approximately 25 mm, allowing for efficient light collection from the front face. The tube operates under high voltage bias to achieve significant internal gain, making it suitable for applications requiring high sensitivity and fast response times in photon counting or analog detection modes.

Single Bipolar Transistors Feature Summary

• Utilizes a bialkali photocathode material for enhanced spectral sensitivity in the visible and near-ultraviolet range.
• Features a circular end-on glass envelope design optimized for uniform light collection across the active area.
• Provides high internal gain through a multi-dynode electron multiplication structure for detecting weak optical signals.

Single Bipolar Transistors Applications

• Scintillation counting systems for radiation detection
• Fluorescence spectroscopy instrumentation
• Low-light level imaging and photon counting devices

Single Bipolar Transistors Procurement Notes

Verify the specific suffix TL-E against official Panasonic Sanyo documentation to confirm pinout configuration and base type compatibility. Ensure that the operating voltage requirements align with existing power supply capabilities. Confirm that the spectral response characteristics meet the specific wavelength requirements of the intended optical system before finalizing procurement.

Single Bipolar Transistors Selection Notes

Select this component when high quantum efficiency in the blue-green spectrum is required alongside fast temporal response. Consider the physical dimensions of the circular window and the necessary high-voltage biasing infrastructure. Evaluate the dark current specifications relative to the noise floor of the downstream electronics to ensure optimal signal-to-noise ratio in low-light conditions.

Single Bipolar Transistors Part Context

This model belongs to the family of circular photomultiplier tubes designed for scientific and industrial sensing. These components are critical in instruments where traditional semiconductor detectors lack sufficient sensitivity. The designation indicates specific manufacturing tolerances and base configurations distinct from other variants in the broader PMT lineup.

Single Bipolar Transistors Replacement Considerations

Consult official cross-reference guides for equivalent models from manufacturers such as Hamamatsu Photonics or ET Enterprises. Verify that substitute parts match the exact dynode structure, window material, and mechanical footprint to maintain system integration without modification.