TC1.33-182X-75+

Product Overview

TC1.33-182X-75+ is a 75 Ω transformer with a 1:1.33 secondary-to-primary impedance ratio, operating from 5 MHz to 1.8 GHz. It combines balanced/unbalanced conversion with a modest impedance step, useful when a broadband 75 Ω coaxial path must feed a differential circuit whose optimum impedance is higher than the line impedance.

The range covers CATV return and forward-path frequencies, broadband tuner inputs and other 75 Ω distribution systems. Mini-Circuits supplies the part in the AT1521 top-hat package with configuration M1. The 1.33 ratio is central to the matching function, so a 1:1 75 Ω balun may fit physically yet still change signal level and port match.

Key Features

• Manufacturer: Mini-Circuits
• Part Number: TC1.33-182X-75+
• Product Category: RF Balun / RF Transformer
• Device Type: 75 Ω 1:1.33 impedance-transforming balun
• Frequency Range: 5 MHz to 1800 MHz
• System / Port Impedance: 75 Ω
• Impedance Ratio: 1:1.33
• Package / Case: AT1521 top-hat, approximately 0.150 × 0.150 × 0.160 in
• Mounting Type: Surface mount
• Pin Configuration: M1

Applications

• CATV, broadband video and 75 Ω receiver front ends
• 75 Ω coaxial-to-differential impedance matching
• Broadband tuner and communications interfaces to 1.8 GHz

Quality & Sourcing

Antrex Electronics can assist with sourcing TC1.33-182X-75+ 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.