Hammond Manufacturing 802 Audio Transformer Equivalent & Substitute Parts

Part Overview

The Hammond Manufacturing 802 is a broadcast quality audio transformer designed for impedance matching applications in professional audio systems. It features a 200 ohm primary impedance (50/50 configuration) and 600 ohm secondary impedance (150/150 configuration) with a frequency response of ±0.5dB across the 50Hz to 15kHz audio band. The part is classified as obsolete, making identification of suitable substitute components essential for system maintenance and repair applications. The 802 series chassis mount configuration with solder lug termination has been superseded by the active 800A series.

Substiute Parts

802

Hammond ManufacturingIn Stock: 946802 Datasheet

Current PartRFQ

802A

Hammond ManufacturingIn Stock: 1480802A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Hammond Manufacturing 802A serves as the direct substitute for the obsolete 802 model. Substitution eligibility is determined by the following critical parameters:

Primary Substitution Criteria:

• Frequency range: 50Hz ~ 15kHz (identical)
• Frequency response: ±0.5dB (identical)
• Power level: 15dB (identical)
• Mounting type: Chassis Mount (identical)
• Transformer type classification: Audio impedance matching (compatible)
• RoHS3 compliance: Both parts meet current environmental standards

Mechanical Compatibility Considerations: The 802A utilizes wire leads termination versus the original 802 solder lug configuration. This represents a mechanical interface change requiring circuit board layout evaluation during integration.

Parameter Comparison

Engineering Selection Recommendations

The Hammond 802A is the designated active substitute for the obsolete Hammond 802. Both components maintain identical electrical performance specifications across the audio frequency band and meet current RoHS3 environmental compliance requirements. The 802A's active product status ensures ongoing availability and manufacturing support.

The primary design consideration during substitution involves the termination interface change from solder lug to wire leads. Circuit board modifications or connector adaptation may be required depending on the existing PCB layout and connection methodology. The electrical performance characteristics remain equivalent for audio transformer applications within the specified frequency and power parameters.

Frequently Asked Questions (FAQ)

Q: Can the Hammond 802A directly replace the Hammond 802 without circuit modifications?

A: Electrical substitution is valid. Mechanical integration requires evaluation of the termination interface change from solder lug to wire leads. PCB layout and connection points must be assessed for compatibility.

Q: Are the impedance specifications identical between the 802 and 802A?

A: The input data does not provide complete impedance specifications for the 802A. Verification of primary and secondary impedance values is required before final integration.

Q: What is the significance of the frequency response ±0.5dB specification?

A: This specification defines the maximum deviation from flat response across the 50Hz to 15kHz operating band. Both the 802 and 802A maintain this specification, ensuring consistent audio fidelity in broadcast quality applications.

Q: Does the packaging difference affect electrical performance?

A: Packaging classification (standard versus bulk) does not affect electrical or mechanical performance. It reflects inventory and distribution methodology only.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the Hammond 802 and 802A are ROHS3 compliant and REACH unaffected, meeting current environmental standards for electronic component manufacturing and distribution.