3-1-1JEL

Overview

The Bourns Inc. 3-1-1JEL is a surface-mount RF balun transformer designed for signal conversion between balanced and unbalanced lines. It operates within a frequency range of 150kHz to 400MHz, supporting applications requiring reliable impedance transformation in compact form factors. The component utilizes a 6-SMD J-Lead package configuration, ensuring secure mounting on printed circuit boards while maintaining electrical integrity across its specified bandwidth. This device is engineered to provide consistent performance in high-frequency circuits where phase balance and insertion loss characteristics are critical for signal fidelity.

Feature Summary

• Provides balanced-to-unbalanced signal conversion for RF circuits
• Operates effectively across a wide frequency spectrum from 150kHz to 400MHz
• Features a compact surface-mount design with J-Lead termination

Applications

• RF communication systems requiring impedance matching
• Consumer electronics utilizing wireless signal transmission
• Industrial equipment needing stable RF signal processing

Procurement Notes

Verify the specific datasheet version to confirm mechanical dimensions and thermal specifications prior to integration. Ensure that the 6-SMD J-Lead footprint matches the target PCB layout exactly. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference the manufacturer part number to avoid confusion with similar series components that may have different pin configurations or electrical ratings.

Selection Notes

Select this component when a compact solution is required for frequencies up to 400MHz. Consider the maximum insertion loss of 3.0dB when designing for sensitive signal paths. Evaluate the physical space constraints against the 6-SMD package size. Ensure the application does not exceed the voltage and current limits defined in the official documentation. Compare alternative baluns only if wider bandwidth or lower loss is strictly necessary.

Part Context

This balun belongs to Bourns' portfolio of magnetic components used for signal conditioning. It complements other RF transformers in their lineup, offering a specialized solution for mid-range frequency applications. The product supports designs in telecommunications and consumer markets where space efficiency and reliable signal conversion are prioritized over extreme power handling capabilities.

Replacement Considerations

Check for direct substitutes within the same family that share identical pinout and electrical parameters. Verify that any replacement maintains the 150kHz to 400MHz operational range. Ensure the new component fits the existing 6-SMD J-Lead footprint without modification.