This 3:1 SMD balun RF transformer is designed for broadband wireless communication and RF signal conversion applications, achieving impedance transformation between 75Ω and 25Ω and balanced/unbalanced signal conversion. The product uses an SMD package and is compatible with 260°C reflow soldering processes. It offers a wide frequency range, low main-line loss, and high return loss, ensuring signal transmission efficiency and impedance matching performance. It is widely used in VHF/UHF receivers/transmitters, push-pull amplifiers, antenna systems, and broadband matching networks in RF applications. It is an ideal choice for broadband wireless communication and RF front-end design.

Features:

• 3: 1 Impedance
• 75Ω Characteristic Impedance
• Frequency: 5 to 1250 MHz
• 260°C Reflow Compatible
• RoHS compliant

Applications

• Broadband wireless communication
• VHF/UHF receivers
• VHF/UHF transmitters
• Push-pull amplifiers
• Antenna systems
• RF front-end modules
• Broadband impedance matching
• Test and measurement equipment

ELECTRONICAL SPECIFICATIONS(25℃,Z=75Ω)

• Frequency: 5-1250MHz
• Operating temperature: -40℃ to 85℃
• Storage temperature: -55℃ to 100℃

Pin configuration

FAQ

Q: How do you establish long-term good business relationships with us?

A: We insist on high-quality products and fast delivery to ensure our customers win more projects. At the same time, we treat every customer as a friend and sincerely do business with them to build long-term friendship.

Q: How do you control quality?

A: We control product quality through incoming quality inspection (IQC) and 100% quality testing before packaging and shipment, ensuring every product meets specifications.

Q: What is the difference between a 3:1 balun transformer and a 1:1 balun transformer?

A: A 3:1 balun transformer simultaneously performs impedance transformation between 75Ω and 25Ω and balanced/unbalanced signal conversion, suitable for broadband matching networks that require impedance transformation. A 1:1 balun performs only balanced/unbalanced conversion without changing impedance. Please choose based on your system impedance matching requirements.