Balun

Category Introduction

A Balun is a device designed to connect two circuits by converting or unconverting balanced and unbalanced loads. The characteristics are frequency range, impedance -unbalanced/balanced, phase difference, insertion loss, and return loss. The frequency range is from 10kHz to 23.6GHz with an impedance from 1:1 to 100/100Ohm and a phase difference from -155° ±15° to 195°.

Product List

29 Items

Mfr Part #	Quantity Available	UnitPrice	Packaging	Product Status	Frequency Range	Impedance - Unbalanced/Balanced	Phase Difference	Insertion Loss (Max)	Return Loss (Min)	Package / Case	Mounting Type
BAL-NRF01D3 BALUN 2.4GHZ-2.54GHZ 5WFBGA STMicroelectronics	570	$0.58	Tape & Reel (TR)	Active	2.4GHz ~ 2.54GHz	50 / -Ohm	3°	2.25dB	10dB	5-WFBGA, FCBGA	Surface Mount
TC1-1-13MX+ 1:1 CORE & WIRE TRANSFORMER, 4.5 Mini-Circuits	91	$2.44	Tape & Reel (TR)	Active	4.5MHz ~ 3GHz	50 / 50Ohm	3°	3dB	6.79dB	6-SMD (5 Leads), Flat Lead	Surface Mount
TC1-1TG2+ 1:1 CORE & WIRE TRANSFORMER, 0.4 Mini-Circuits	292	$3.35	Tape & Reel (TR)	Active	400kHz ~ 500MHz	50 / 50Ohm	5°	3dB	6.9dB	6-SMD (5 Leads), Flat Lead	Surface Mount
ETC1-1-13TR BALUN 4.5MHZ-3GHZ 1:1 5SMD MACOM Technology Solutions	227	$3.02	Tape & Reel (TR)	Active	4.5MHz ~ 3GHz	1:1	-	3.5dB	-	5-SMD	Surface Mount
BALF-NRG-02D3 BALUN 2.4GHZ-2.5GHZ 50/50 4UFBGA STMicroelectronics	1,476	$0.51	Tape & Reel (TR)	Active	2.4GHz ~ 2.5GHz	50 / 50Ohm	3°	1.3dB	19dB	4-UFBGA, CSPBGA	Surface Mount
BALF-NRG-01D3 BALUN 2.4GHZ-2.5GHZ 50/50 4WFBGA STMicroelectronics	975	$0.58	Tape & Reel (TR)	Active	2.4GHz ~ 2.5GHz	50 / 50Ohm	7°	1.1dB	-20dBm	4-WFBGA, FCBGA	Surface Mount
BALF-NRF01E3 BALUN 2.4GHZ-2.54GHZ 6XFLGA STMicroelectronics	900	$0.63	Tape & Reel (TR)	Active	2.4GHz ~ 2.54GHz	50 / -Ohm	4°	2.2dB	15dB	6-XFLGA	Surface Mount
BAL-NRF02D3 BALUN 2.4-2.54GHZ 5UFBGA CSPBGA STMicroelectronics	781	$0.63	Tape & Reel (TR)	Active	2.4GHz ~ 2.54GHz	50 / -Ohm	6°	1.9dB	12dB	5-UFBGA, CSPBGA	Surface Mount
TC1-1-13M-75+ 1:1 CORE & WIRE TRANSFORMER, 4.5 Mini-Circuits	331	$2.50	Tape & Reel (TR)	Active	4.5MHz ~ 3GHz	75 / 75Ohm	3°	3dB	8.36dB	5-SMD Module	Surface Mount
TC1-1-13MG2+ 1:1 CORE & WIRE TRANSFORMER, 4.5 Mini-Circuits	109	$2.75	Tape & Reel (TR)	Active	4.5MHz ~ 3GHz	50 / 50Ohm	3°	3dB	6.79dB	5-SMD Module	Surface Mount
TC2-72T+ 1:2 CORE & WIRE TRANSFORMER, 10 Mini-Circuits	87	$2.91	Tape & Reel (TR)	Active	10MHz ~ 700MHz	1:2	2.25°	1.8dB	12.3dB	6-SMD (5 Leads), Flat Lead	Surface Mount
BAL-CC25-01D3 BALUN 2.379GHZ-2.507GHZ 4UFBGA STMicroelectronics	827	$0.65	Tape & Reel (TR)	Not For New Designs	2.379GHz ~ 2.507GHz	50 / -Ohm	14°	0.66dB	19dB	4-UFBGA, FCBGA	Surface Mount
BALF-SPI2-01D3 BALUN 868MHZ-928MHZ 50/50 6UFBGA STMicroelectronics	268	$0.81	Tape & Reel (TR)	Active	868MHz ~ 928MHz	50 / 50Ohm	7°	2.1dB	10dB	6-UFBGA, FCBGA	Surface Mount
BALF-SPI-02D3 BALUN 434MHZ 6WFBGA FCBGA STMicroelectronics	356	$0.63	Tape & Reel (TR)	Active	434MHz	50 / -Ohm	10°	2.3dB	15dB	6-WFBGA, FCBGA	Surface Mount
BALF-SPI2-02D3 BALUN 433MHZ 6WFBGA FCBGA STMicroelectronics	352	$0.86	Tape & Reel (TR)	Active	433MHz	50 / -Ohm	2.1°	3.6dB	6.5dB	6-WFBGA, FCBGA	Surface Mount
TC1-1TX+ 1:1 CORE & WIRE TRANSFORMER, 0.4 Mini-Circuits	61	$3.08	Tape & Reel (TR)	Active	400kHz ~ 500MHz	50 / 50Ohm	5°	3dB	6.9dB	6-SMD (5 Leads), Flat Lead	Surface Mount
TC1-1T+ 1:1 CORE & WIRE TRANSFORMER, 0.4 Mini-Circuits	44	$3.01	Tape & Reel (TR)	Active	400kHz ~ 500MHz	50 / 50Ohm	5°	3dB	6.9dB	6-SMD (5 Leads), Flat Lead	Surface Mount
TCM1-63AX+ 1:1 CORE & WIRE TRANSFORMER, 10 Mini-Circuits	67	$11.30	Tape & Reel (TR)	Active	10MHz ~ 6GHz	50 / 50Ohm	8°	2.5dB	9.42dB	6-SMD Module	Surface Mount
TCM1-83X+ 1:1 CORE & WIRE TRANSFORMER, 10 Mini-Circuits	35	$14.90	Tape & Reel (TR)	Active	10MHz ~ 8GHz	50 / 50Ohm	8°	3dB	10.56dB	6-SMD Module	Surface Mount
TC1-1-13MA+ RF TRANSFORMER, 4.5 - 3000 MHZ, Mini-Circuits	210	$2.44	Tape & Reel (TR)	Active	4.5MHz ~ 3GHz	50 / 50Ohm	3°	3dB	6.79dB	6-SMD (5 Leads), Flat Lead	Surface Mount

About Balun

What are Balun?

Balun

Baluns, short for "balanced to unbalanced transformers," are essential components in RF/IF and RFID systems. They serve the primary function of converting between balanced and unbalanced signals, which is crucial for maintaining signal integrity and minimizing interference. A balanced signal has equal and opposite voltages on two lines, while an unbalanced signal has a single line with a ground reference. Baluns work by using a combination of inductors and capacitors to transform impedance and phase, ensuring that signals are efficiently transmitted between different types of circuits. This transformation helps in reducing noise and improving the performance of communication systems.

Types of Balun

1. Transformer Baluns

Transformer baluns use magnetic coupling to convert signals. They are highly effective in providing wide bandwidth and high isolation between input and output. These baluns are often used in applications requiring high power handling and low insertion loss, such as in broadcasting and high-frequency communication systems.

2. Transmission Line Baluns

Transmission line baluns utilize transmission lines, such as coaxial cables or twisted pairs, to achieve impedance transformation. They are typically used in applications where compact size and low cost are priorities. These baluns are ideal for RF applications where space is limited, such as in mobile devices and compact antennas.

3. Hybrid Baluns

Hybrid baluns combine the features of both transformer and transmission line baluns. They offer a balance between performance and size, making them suitable for a wide range of applications. Hybrid baluns are often used in systems where both high performance and compact design are required, such as in satellite communication and radar systems.

How to choose Balun?

When selecting a balun, several key parameters should be considered:

Frequency Range: Ensure the balun supports the frequency range of your application.
Impedance Matching: Choose a balun that matches the impedance of your system to minimize reflection and loss.
Power Handling: Consider the power levels the balun must handle without distortion or damage.
Insertion Loss: Opt for a balun with low insertion loss to maintain signal strength.
Size and Form Factor: Ensure the balun fits within the physical constraints of your design.

Evaluating product quality involves checking supplier certifications, reviewing customer feedback, and assessing the manufacturer's reputation. Environmental factors such as temperature, humidity, and mechanical stress should also be considered, as they can affect balun performance. Proper installation is crucial, so follow manufacturer guidelines to ensure optimal operation.

Applications of Balun

1. Telecommunications

In telecommunications, baluns are used to connect balanced lines, such as twisted pairs, to unbalanced lines, like coaxial cables. This application is crucial for reducing signal interference and ensuring clear communication over long distances.

2. Broadcasting

Broadcasting systems employ baluns to match the impedance between antennas and transmission lines, ensuring efficient signal transmission and reducing power loss. They are vital in both radio and television broadcasting.

3. Medical Imaging

In medical imaging, particularly MRI systems, baluns help in reducing electromagnetic interference, ensuring high-quality imaging results. They are used to balance the signals in the RF coils, improving the clarity and accuracy of the images.

4. Aerospace and Defense

Baluns are used in radar and communication systems within the aerospace and defense industries. They ensure signal integrity and reduce noise, which is critical for accurate data transmission and reception in these high-stakes environments.

5. Consumer Electronics

In consumer electronics, baluns are used in devices like televisions and radios to connect different types of cables and improve signal quality. They help in minimizing interference from other electronic devices, enhancing the user experience.