102B

Overview

The Hammond Manufacturing 102B is a miniature epoxy-sealed audio transformer designed for through-hole mounting. It features a primary impedance of 50 Ohms and a secondary impedance of 1.5k Ohms. The component operates with a frequency range of 310Hz and maintains a voltage isolation rating of 100V. Electrical performance includes a -1dB frequency response, 1.5dB insertion loss, and a power handling level of 20mW. Physical dimensions are 0.570 inches in length and width, with a maximum installation height of 0.480 inches. DC resistance values are 4 Ohms for the primary side and 95 Ohms for the secondary side.

Feature Summary

• Miniature epoxy-sealed construction for durability
• Specific impedance matching between 50 Ohm primary and 1.5k Ohm secondary
• Through-hole PC pin termination style

Applications

• Audio signal coupling circuits
• Impedance matching in low-power audio systems
• Electronic instrument internal wiring

Procurement Notes

Verify the specific manufacturer part number 102B against official Hammond Manufacturing documentation to ensure correct electrical parameters. Confirm that the 50 Ohm primary and 1.5k Ohm secondary specifications match the design requirements. Check for RoHS compliance status and ensure the through-hole package type is suitable for the intended PCB assembly process. Cross-reference datasheet details for frequency response and isolation ratings before finalizing procurement.

Selection Notes

Select this component when a compact audio transformer with a 50 Ohm to 1.5k Ohm ratio is required. The 20mW power rating and 310Hz frequency range define its operational limits. Consider the physical footprint of 0.570 x 0.570 inches for space-constrained designs. Ensure the circuit environment supports the 100V isolation voltage. The epoxy seal provides protection against environmental factors compared to open-wound alternatives.

Part Context

The 102B belongs to the Hammond Manufacturing 102 series of audio transformers. This series focuses on miniature, epoxy-encapsulated components suitable for various electronic applications requiring signal transformation. The product line emphasizes reliable performance in standard through-hole configurations, serving as a foundational component for audio and instrumentation hardware within the manufacturer's catalog.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Hammond Manufacturing technical support or authorized distributors for direct equivalents or cross-references based on specific impedance and frequency requirements.