ZXYAUDIO SMD RF Balun Transformer - Wideband Surface Mount Balun, Ferrite Dual-Aperture Core, Copper Wire Multi-Winding, Unbalanced to Balanced Conversion for RF and Telecom
A wideband surface-mount RF balun on a high-permeability ferrite dual-aperture core, wound with copper wire to tight tolerance. It converts unbalanced RF signals to balanced and back, with amplitude and phase balance (0° / 180°), low insertion loss and high port-to-port isolation.
- Surface-mount construction ready for automated SMT assembly
- High-permeability ferrite dual-aperture core, copper wire multi-winding
- Wideband operation with 0° / 180° amplitude and phase balance
- Low insertion loss and high isolation between input and output ports
- Custom impedance ratio made to order; 100% electrically tested
1. Product Overview
The SMD RF Balun Transformer is a wideband surface-mount balun built on a high-permeability ferrite dual-aperture core with a copper wire multi-winding. It converts unbalanced RF signals to balanced ones and back, and is intended for RF communication and telecom equipment where a balanced feed, low insertion loss and port-to-port isolation are required.
SMD RF balun transformer, wideband surface mount technology
2. Key Features
- Surface-mount construction for automated SMT assembly
- High-permeability ferrite dual-aperture core
- Copper wire multi-winding to tight tolerance
- Wideband operation with amplitude and phase balance
- Custom impedance ratio made to order
3. Advantages
| Advantage | Description |
|---|---|
| High-efficiency Signal Conversion | Capable of accurately converting unbalanced RF signals to balanced ones and vice versa. This efficient conversion minimizes signal reflection and losses, ensuring seamless transfer of signals between different types of circuits and transmission lines, thus enhancing the overall performance of the RF system. |
| Wide-frequency Response | Exhibits a broad operating frequency range. It can maintain good performance across multiple frequency bands, making it suitable for diverse RF applications. This eliminates the need for multiple transformers for different frequencies, reducing both cost and system complexity. |
| Low Insertion Loss | Constructed with high-quality materials and optimized designs, resulting in minimal energy loss as the signal passes through. This ensures that the signal retains its strength and quality, which is beneficial for improving the receiving sensitivity and transmitting efficiency, especially in long-distance transmissions or multi-stage amplification circuits. |
| High Isolation | Provides high-level isolation between the input and output ports. This effectively suppresses signal crosstalk between ports, preventing interference between signals. It improves signal purity and system stability, being crucial for multi-channel or multi-signal processing systems by reducing signal interference and error rates. |
| Excellent Impedance-matching | Can achieve good input-output impedance matching according to different application requirements through proper design. This enables optimal power transfer between the signal source and the load, minimizing reflected waves, increasing transmission efficiency, and reducing the standing-wave ratio, thereby enhancing the overall performance and reliability of the system. |
| Good Electromagnetic Compatibility | By choosing appropriate magnetic core materials and shielding measures, it has good electromagnetic compatibility. It can not only prevent external electromagnetic interference from affecting internal signal transmission but also avoid its own electromagnetic interference from impacting other devices. This makes it compliant with electromagnetic environment requirements and suitable for various complex electromagnetic environments. |
| High Reliability | Featuring a compact structure and made with high-quality materials and advanced manufacturing processes, it has high stability and reliability. It can operate stably for a long time under different environmental conditions, reducing maintenance and replacement costs. It is suitable for RF systems with high-reliability requirements, such as aerospace and military communication fields. |
4. Applications
- RF front ends and antenna feed networks needing a balanced feed
- Wideband RF signal chains in communication and telecom equipment
- Multi-channel boards needing port-to-port isolation
5. Specifications
5.1 Product Overview
| Item | Value |
|---|---|
| Product type | SMD RF balun transformer |
| Mounting | Surface mount (SMD) |
| Core | Ferrite, dual-aperture, high permeability |
| Winding | Copper wire, multi-winding, tight tolerance |
| Signal conversion | Unbalanced to balanced, and balanced to unbalanced |
| Frequency | Wideband / high frequency |
| Balance | Amplitude and phase balance (0° / 180°) |
| Impedance | Custom impedance ratio |
| Electrical testing | 100% tested |
Summarised from the supplied artwork.
5.2 Construction and RF Performance
The core is a high-permeability ferrite dual-aperture type, wound with copper wire to tight tolerance so the two balanced outputs track each other. The winding passes through both apertures and terminates on folded metal tabs. The part is specified for wideband RF operation with low insertion loss and 0° / 180° balance.
Premium ferrite core and copper wire: high permeability dual-aperture core, tight tolerance multi-winding
Terminal and winding detail: copper winding through both apertures, folded metal tabs
High frequency and low loss: wideband performance, 0° / 180° amplitude and phase balance, low insertion loss
5.3 Customization and Supply
Impedance ratio is made to order, packaging can be varied, and the parts are supplied from the factory directly.
Custom winding and OEM / ODM service: custom impedance ratio, flexible packaging, direct factory supply
5.4 Compliance Marks
| Mark | Status in the source material |
|---|---|
| CCC | Shown on the supplied artwork |
| CE | Shown on the supplied artwork |
| RoHS | Shown on the supplied artwork |
| UL | Shown on the supplied artwork |
No certificate numbers or test reports accompany the source material; attach the certificates before publication.
International quality standards and compliance marks: CCC, CE, RoHS, UL
5.5 Outline Drawings and Mounting
The drawings show a surface-mount outline with terminals numbered 1 to 3 along one edge and 4 to 6 along the other. One marks a 3.80 ± 0.20 mm body width, 4.20 ± 0.20 mm length, 2.80 ± 0.20 mm height and 0.76 ± 0.10 mm terminal width; another a 3.80 ± 0.20 mm square body at 1.27 mm pitch; the section view a 3.0 mm maximum height. The drawings disagree and none carries a model number, so confirm the outline per order.
Note: the outline drawings referenced above (top / side views, recommended layout and section view) were not part of the image set supplied for this listing. Body dimensions are therefore left out of the specification columns until the outline is confirmed.
6. Quality & Testing Assurance
Every unit is electrically tested before shipment and the parts are ready for automated SMT assembly. Terminal configuration and outline are confirmed per order.
100% electrically tested: high stability and consistency, SMT automated assembly ready
Units on test and assembly tooling
SMD RF Balun Transformer | Ferrite Dual-Aperture Core | Wideband Surface Mount. Impedance ratio, terminal configuration and outline are confirmed per order: please send your required impedance ratio, frequency band, quantity and destination port for a quotation.