108N

Overview

The Hammond Manufacturing 108N is an audio miniature transformer from the 108 Series, featuring epoxy potting in a molded case. It utilizes pin-type PC board mounting with a minimum pin length of 0.187 inches. The component has a primary nominal impedance of 10K ohms center-tapped (pins 1-3) and a secondary resistance of 69 ohms. It supports a power rating of 500 mW at ±1.5 dB across a frequency range of 300 Hz to 50 KHz. The unit withstands soldering for 10 seconds at 260°C with a maximum ambient temperature of 85°C.

Feature Summary

• Epoxy potted construction within a molded case for durability
• Pin-type PC board mounting configuration
• Designed for audio input and line matching applications

Applications

• Audio input circuits
• Line matching systems
• Output transformer stages

Procurement Notes

Verify the specific impedance configuration required for your design, as the 108 series includes variants such as the 108K with different primary impedances. Confirm that the 500 mW power rating aligns with your signal levels. Ensure PCB layout accommodates the 0.187-inch minimum pin length for proper insertion and soldering. Check RoHS compliance status if environmental regulations apply to your assembly process.

Selection Notes

Select the 108N when a 10K center-tapped primary impedance is necessary for high-impedance source matching. Consider this component for space-constrained designs requiring miniature epoxy-potted transformers. Evaluate the 300 Hz to 50 KHz frequency response against your audio bandwidth requirements. Compare against the 108K variant if a 1.5K primary impedance better suits your circuit topology.

Part Context

The 108N belongs to Hammond's 108 Series of audio miniature transformers, which are characterized by their compact size and robust epoxy potting. This series is engineered for reliable performance in audio signal processing environments. The components are designed for direct PC board mounting, facilitating automated assembly processes while maintaining electrical integrity through thermal and mechanical stress.

Replacement Considerations

The 108K is a related part in the same series but features a 1.5K center-tapped primary impedance instead of the 10K found in the 108N. Substitution requires verification of impedance matching requirements. No other direct cross-model substitutes are documented in the provided data.