JANS2N2857UB-LC

Overview

The JANS2N2857UB-LC is an NPN silicon small-signal bipolar junction transistor manufactured by Microsemi. It belongs to the JANS series, indicating radiation-hardened construction suitable for space and high-radiation environments. The device utilizes a CERSOT-3 hermetically sealed ceramic package. Key electrical parameters include a maximum collector current of 0.04 A and operation in the ultra-high frequency band. The component is designed for reliable performance in demanding RF applications where standard commercial parts would fail due to ionizing radiation effects.

Feature Summary

• Radiation-hardened design for space and high-radiation environments
• Hermetically sealed ceramic CERSOT-3 package
• Ultra-high frequency RF small-signal capability
• NPN silicon bipolar junction transistor configuration

Applications

• Spacecraft communication systems
• Satellite RF signal processing
• High-reliability military electronics
• Ionizing radiation environment circuits

Procurement Notes

Verify the specific suffix LC against the official Microsemi datasheet to confirm pinout and mechanical dimensions. Ensure procurement channels provide traceable documentation for JANS series components. Confirm radiation hardness levels meet mission requirements before integration.

Selection Notes

Select this component when radiation tolerance is critical for UHF applications. Compare the CERSOT-3 package constraints with board layout requirements. Verify that the 0.04 A collector current rating suffices for the target circuit load without derating issues.

Part Context

This part is part of the JANS family of radiation-hardened semiconductors produced by Microsemi (formerly Microchip Defense). The JANS designation signifies qualification for space-grade reliability standards. The UB variant denotes the ceramic package style, while LC indicates specific lead or tape configuration details defined in the manufacturer's drawing.

Replacement Considerations

Direct replacements must match the JANS radiation-hardened specification. Standard commercial 2N2857 equivalents lack radiation tolerance and are unsuitable for space applications. Verify equivalent JANS-series parts from authorized distributors only.