Description

Avago’s AT-41435 is a general purpose NPN bipolar transistor that offers excellent high frequency performance. The AT-41435 is housed in a cost effective surface mount 100 mil micro-X package. The 4 micron emitter-to-emitter pitch enables this transistor to be used in many different functions. The 14 emitter finger interdigitated geometry yields an intermediate sized transistor with impedances that are easy to match for low noise and moderate power applications. This device is designed for use in low noise, wideband amplifier, mixer and oscillator applications in the VHF, UHF, and microwave frequencies. An optimum noise match near 50Ω at 1 GHz, makes this device easy to use as a low noise amplifier.
The AT-41435 bipolar transistor is fabricated using Avago's 10 GHz fT Self-Aligned-Transistor (SAT) process. The die is nitride passivated for surface protection. Excellent device uniformity, performance and reliability are produced by the use of ion-implantation, self-alignment techniques, and gold metallization in the fabrication of this device.

Specifications and features

• Low Noise Figure:
1.7 dB Typical at 2.0 GHz
3.0 dB Typical at 4.0 GHz
• High Associated Gain:
14.0 dB Typical at 2.0 GHz
10.0 dB Typical at 4.0 GHz
• High Gain-Bandwidth Product: 8.0 GHz Typical fT
• Cost Effective Ceramic Microstrip Package

Application Scenarios

This AT-41435 bipolar transistor can be used in a variety of applications, including low noise amplifiers, wideband amplifiers, mixers, and oscillators. It is designed for use in VHF, UHF, and microwave frequencies.

Comparison

- Excellent high frequency performance

- Cost effective surface mount package

- Easy to match impedances for low noise and moderate power applications

- Optimum noise match near 50Ω at 1GHz for low noise amplifier applications

- Limited information available on specific technical specifications