2N4029

Single Bipolar Transistors Overview

The Microchip Technology 2N4029 is a PNP silicon switching transistor qualified per MIL-PRF-19500/512. It features an 80 Vdc collector-emitter voltage and a 1.0 Adc maximum collector current. The device operates within a junction temperature range of -65°C to +200°C. Electrical characteristics include a forward-current transfer ratio (hFE) ranging from 50 to 300 at IC = 100mAdc, and a collector-base cutoff current of 10 µAdc at VCB = 80Vdc. Total power dissipation is rated at 0.5 W at TA = +25°C.

Single Bipolar Transistors Feature Summary

• Qualified for military specifications under MIL-PRF-19500/512 standards
• Designed for high-speed switching applications with defined dynamic characteristics
• Capable of operation across extreme temperatures from -65°C to +200°C

Single Bipolar Transistors Applications

• Military-grade switching circuits
• High-reliability analog signal processing
• Harsh environment electronic systems

Single Bipolar Transistors Procurement Notes

Verify the specific package variant required, as the datasheet covers TO-18, TO-39, UA, and UB packages. Confirm that the procurement source provides components strictly adhering to the MIL-PRF-19500/512 qualification requirements. Ensure environmental compliance documentation matches project specifications, noting potential RoHS status variations in legacy military parts.

Single Bipolar Transistors Selection Notes

Select this component when military qualification and wide thermal operating ranges are mandatory. Compare hFE gain bands and saturation voltages against circuit requirements. Consider alternative packages like TO-39 or surface mount variants if mechanical constraints differ from the standard TO-18 configuration.

Single Bipolar Transistors Part Context

This part belongs to a family of PNP silicon switching transistors including the 2N4033 and its variants. While sharing core electrical ratings, physical dimensions and thermal resistance values vary significantly between the through-hole TO-18/TO-39 packages and the surface-mount UA/UB versions.

Single Bipolar Transistors Replacement Considerations

Direct replacements must meet MIL-PRF-19500/512. Verify pinout compatibility for TO-18 versus TO-39 packages. Surface mount equivalents require careful thermal analysis due to differing heat dissipation capabilities.