Profusion's channel for the enthusiast, audiophile, service engineer and student. Purchase a vast range of specialist parts for fast delivery.

    • A vast range of audio components shipped from stock
    • The latest products, gadgets and equipment
    • Fast delivery worldwide
    • No quibble returns


    Profusion's channel for the Research and Development Engineer looking for inspiration and the information needed to speed through the design process and produce a winner.

    • Access a wide collection of application notes and design aids
    • Development boards
    • View product availability


    Profusion's channel for the supply chain professional. Registration required.

    • Profusion managed inventory buffer stock
    • Lead times and stock levels
    • RoHS and material declarations and quality certificates
    • Product status alerts
    • Equivalents and alternatives

Transistor Arrays

When it comes to matched transistor arrays, you're not likely to find any better than THAT Corporation's 300 series. These are large-geometry, 4-transistor, monolithic NPN and/or PNP arrays exhibiting both high speed and low noise, with excellent parameter matching between transistors of the same gender. Their low base-spreading resistances and voltage noise under 1 nV/rt-Hz make the 300 series ideal for low-noise amplifier input stages, among other applications. Because they are fabricated in a dielectrically isolated (DI), complementary bipolar process, each transistor is electrically insulated from the others by a layer of insulating oxide (and not the reverse-biased PN junctions used in conventional arrays). Consequently, the THAT300 series exhibit inter-device crosstalk and DC isolation similar to that expected from discrete transistors - perfect for audio applications!

Part Number ManufacturerVceIcHfeenPackageComments
THAT300AS14-U THAT40V0.02A1500.8nVSOIC-14 
THAT300BS14-U THAT40V0.02A1500.8nVSOIC-14 
THAT300P14-U THAT40V0.02A1500.8nVDIP-14 
THAT300S14-U THAT40V0.02A1500.8nVSOIC-14 
THAT320P14-U THAT-40V-0.02A750.75nVDIP-14 
THAT320S14-U THAT-40V-0.02A750.75nVSOIC-14 
THAT340P14-U THAT40V0.02A750.8nVDIP-14 
THAT340S14-U THAT40V0.02A750.8nVSOIC-14