NE85634-T1-A

Overview

The NE85634-T1-A is a silicon NPN high-frequency bipolar transistor manufactured by CEL. It corresponds to the JEITA equivalent part number 2SC3357 and utilizes a SOT-89 (Package Code 34) surface-mount housing. The device features a typical transition frequency of 6.5 GHz measured at 1 GHz test conditions, with a maximum collector-emitter voltage rating of 12 V and a maximum continuous collector current limit of 100 mA. Typical small-signal performance specifications include a noise figure of 1.1 dB and a maximum available gain of 10 dB when operated at a 10 V bias point.

Feature Summary

• Designed for high-frequency RF applications utilizing silicon bipolar technology
• Provides low noise figure characteristics suitable for sensitive front-end stages
• Offers moderate power handling capabilities within a compact surface-mount footprint

Applications

• Low noise amplifier circuits in wireless communication systems
• RF signal processing stages operating up to several gigahertz
• General purpose high-frequency amplification in consumer electronics

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity and pin alignment against the SOT-89 specification prior to assembly. Ensure static-safe handling procedures are followed during storage and installation to prevent electrostatic discharge damage to the semiconductor junctions.

Selection Notes

Evaluate thermal management requirements as the SOT-89 package has limited heat dissipation capacity compared to larger packages. Compare noise figure and gain specifications against alternative devices if lower noise or higher linearity is required for specific system architectures. Verify that the 12 V voltage rating aligns with the intended circuit supply rails.

Part Context

This component belongs to CEL's portfolio of silicon RF discrete transistors. It serves as a functional replacement for the NEC 2SC3357 device. The product line supports various wireless connectivity standards requiring reliable high-frequency amplification in compact form factors.

Replacement Considerations

The NE85634 is electrically equivalent to the 2SC3357. Designers should verify pinout compatibility and thermal resistance values when substituting this part with other SOT-89 packaged transistors from different manufacturers.