TC1-42+

Product Overview

TC1-42+ is a unity-ratio core-and-wire transformer with a 250 kHz to 400 MHz operating range. The low endpoint allows it to pass broadband IF and modulation signals that are outside the useful range of many transmission-line baluns, while the 400 MHz upper limit still covers HF, VHF and part of lower-UHF systems.

The device maintains a 50 Ω nominal environment and is used for coupling, isolation and balanced/unbalanced conversion rather than impedance multiplication. Mini-Circuits supplies this version in the AT224-1 package with configuration C. That footprint differentiates it from the top-hat TC1-42X+, an important point when sourcing for a fixed production board.

Key Features

• Manufacturer: Mini-Circuits
• Part Number: TC1-42+
• Product Category: RF Balun / RF Transformer
• Device Type: 1:1 low-frequency wideband RF transformer
• Frequency Range: 0.25 MHz to 400 MHz
• System / Port Impedance: 50 Ω
• Impedance Ratio: 1:1
• Package / Case: AT224-1, approximately 0.15 × 0.15 × 0.16 in
• Mounting Type: Surface mount
• Pin Configuration: C

Applications

• Low-frequency IF and broadband instrumentation paths
• HF/VHF balanced amplifier and mixer coupling
• 50 Ω transformer isolation from 250 kHz to 400 MHz

Quality & Sourcing

Antrex Electronics can help source TC1-42+ for current production, maintenance and obsolete-component requirements. For substitution review, compare the operating band, impedance ratio, center tap where applicable, package style and PCB footprint; electrically related Mini-Circuits suffix variants are not always mechanically interchangeable.