2N3490

Single Bipolar Transistors Overview

The Microchip Technology 2N3490 is a high-reliability NPN silicon switching transistor designed for radiation-hardened applications. It is qualified under MIL-PRF-19500/366 standards, specifically meeting the JANSP radiation hardness assurance level. The device features a maximum collector current of 0.5 A and a collector-emitter breakdown voltage of 100 V. Constructed in a metal TO-205AD (TO-39) package with three pins, it serves as a robust component for aerospace and defense electronics requiring significant radiation tolerance.

Single Bipolar Transistors Feature Summary

• Radiation hardened to MIL-PRF-19500/366 JANSP qualification levels
• High reliability construction suitable for harsh environments
• Metal case package with collector connected to the case

Single Bipolar Transistors Applications

• Aerospace electronic systems
• Defense communication equipment
• Satellite subsystems

Single Bipolar Transistors Procurement Notes

Verify that the specific orderable part number includes the JANSP suffix to ensure compliance with the required Radiation Hardness Assurance level. Confirm that the procurement documentation references MIL-PRF-19500/366 qualification. Ensure the received components match the specified TO-205AD metal package configuration. Validate manufacturer traceability records prior to integration into critical systems.

Single Bipolar Transistors Selection Notes

Select this component when radiation hardness is a mandatory design constraint for NPN switching applications. The 0.5 A current rating and 100 V voltage limit define the operational boundaries. Consider the through-hole TO-205AD package constraints during PCB layout. This part is intended for specialized high-reliability sectors rather than general commercial use.

Single Bipolar Transistors Part Context

This transistor belongs to the family of radiation-hardened silicon switching transistors offered by Microchip Technology. These devices are engineered to withstand ionizing radiation effects common in space environments. The 2N3490 variant provides a balance of moderate power handling and high voltage capability within a standard military-grade metal can format.

Single Bipolar Transistors Replacement Considerations

Substitutes must be verified against MIL-PRF-19500/366 specifications. Only parts explicitly designated with equivalent JANSP or compatible RHA qualifications should be considered. Cross-reference pinouts and electrical limits carefully before replacement.