101J

Overview

The Hammond Manufacturing 101J is a single-channel audio transformer designed for pin-type, printed circuit board mounting. It features black epoxy potted construction to ensure a rugged, completely sealed unit capable of withstanding severe conditions. The component has a primary impedance of 2.5 kOhms center-tapped and a secondary impedance of 600 Ohms center-tapped. Its physical dimensions are 0.45 inches in length, 0.48 inches in height, and 0.45 inches in width. The net weight is 0.1 ounces.

Feature Summary

• Black epoxy potted construction provides a rugged, completely sealed unit
• Designed to withstand severe environmental conditions
• Single-channel configuration for signal level applications

Applications

• Signal level audio circuits
• LAN transformers
• Audio transformers

Procurement Notes

Verify the specific impedance configuration matches the design requirements, as the 101J utilizes a 2.5k CT primary and 600 CT secondary arrangement. Confirm that the pin-type PC board mount interface aligns with the target PCB footprint. Ensure the operating temperature range accommodates the intended application environment, as the component is rated for operation between -40 C and +85 C. Cross-reference the physical dimensions against available board space constraints.

Selection Notes

Select the 101J when a sealed, rugged audio transformer is required for harsh environments. The choice is driven by the need for a compact, single-channel solution with specific 2.5k/600 Ohm impedance matching. Consider this part for applications where vibration resistance and complete sealing are critical. The small form factor suits dense PCB layouts. Evaluate if the center-tapped configuration meets the circuit topology needs without additional components.

Part Context

This component belongs to the audio transformer category within Hammond Manufacturing's portfolio. It is distinct from their enclosure products, serving instead as an active electronic component for signal processing. The 101J is part of a series of audio transformers that offer various impedance options and mounting styles. It is specifically engineered for durability through its potted construction, differentiating it from non-sealed alternatives in the same frequency range.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Verify compatibility with alternative audio transformers based on impedance ratios, pin configurations, and physical dimensions before substitution.