TC1-1T-75X+

Product Overview

TC1-1T-75X+ is a 75 Ω, 1:1 transformer designed for 5 to 120 MHz operation. It provides DC isolation between the single-ended primary and balanced secondary, and the secondary center tap gives the connected differential circuit a convenient common-mode, bias or RF-ground point.

This frequency range aligns with CATV return paths, broadband access equipment and lower-frequency receiver stages rather than microwave front ends. The device handles up to 0.25 W RF input and is supplied in the AT1521 top-hat package with configuration A. Its center tap and 75 Ω system impedance are essential selection criteria; a 50 Ω unity-ratio balun would alter matching even if its frequency range overlapped.

Key Features

• Manufacturer: Mini-Circuits
• Part Number: TC1-1T-75X+
• Product Category: RF Balun / RF Transformer
• Device Type: 75 Ω DC-isolated center-tapped RF transformer
• Frequency Range: 5 MHz to 120 MHz
• System / Port Impedance: 75 Ω
• Impedance Ratio: 1:1
• Center Tap: Secondary center tap
• RF Power: 0.25 W
• Package / Case: AT1521 top-hat, approximately 0.150 × 0.150 × 0.160 in
• Mounting Type: Surface mount
• Pin Configuration: A

Applications

• CATV return-path and broadband access equipment
• 75 Ω balanced amplifier and receiver interfaces
• DC-isolated differential coupling with a secondary center tap

Quality & Sourcing

Antrex Electronics can assist with sourcing TC1-1T-75X+ for CATV, broadband and 75 Ω RF assemblies. A replacement should be checked for the same 75 Ω characterization, winding ratio, center-tap arrangement where present, package geometry and usable frequency range rather than selected only by transformer family name.