140PEX

Overview

The Hammond Manufacturing 140PEX is a studio-grade audio transformer designed for impedance matching and signal isolation. It operates within a frequency range of 20 Hz to 20 kHz, ensuring accurate audio reproduction across the audible spectrum. The unit features an 80% nickel core to provide high permeability and low losses, supporting maximum bandwidth and minimal distortion at power levels of +10dBm or less. Electrical configurations include primary impedances of 150/600 Ohms and secondary options of 600/2400 Ohms, with available turns ratios of 1:1, 1:2, and 1:4. A mu-metal can encloses the component to shield against external electromagnetic interference.

Feature Summary

• Utilizes an 80% nickel core to achieve high permeability and low magnetic losses
• Encased in a mu-metal shield to block broad-spectrum external electromagnetic interference
• Engineered for maximum bandwidth and lowest distortion at specified power levels

Applications

• Studio-grade audio signal processing
• Impedance matching between audio components
• Professional audio equipment interfacing

Procurement Notes

Verify the specific impedance configuration required for your circuit, as the 140PEX series offers multiple primary and secondary impedance combinations including 150/600 and 600/2400 Ohms. Confirm that the selected variant matches the necessary turns ratio (1:1, 1:2, or 1:4) for proper signal transfer. Ensure compatibility with the operating frequency range of 20 Hz to 20 kHz. Cross-reference the manufacturer part number with authorized distributor listings to confirm current availability and authenticity before finalizing procurement.

Selection Notes

Select this component when designing professional audio systems requiring precise impedance transformation and high-fidelity signal integrity. The 140PEX is suitable for applications demanding low distortion and wide bandwidth within the standard audio frequency range. Consider the physical dimensions and mounting requirements associated with the mu-metal shielding. Evaluate the specific impedance ratios needed to match source and load characteristics effectively without introducing signal degradation.

Part Context

This component belongs to the Hammond Manufacturing line of audio transformers, specifically engineered for high-performance audio applications. The product series emphasizes studio-grade quality through the use of specialized core materials and advanced shielding techniques. These transformers are integral to maintaining signal purity in professional audio environments where accurate frequency response and minimal noise are critical operational requirements.

Replacement Considerations

Direct substitutes must match the 20 Hz to 20 kHz frequency range and compatible impedance ratios. Verify that alternative components offer similar mu-metal shielding and nickel core construction to maintain equivalent performance characteristics in professional audio circuits.