Hammond Manufacturing 850E Audio Transformer - Equivalent & Substitute Parts

Part Overview

The Hammond Manufacturing 850E is a broadcast quality audio transformer designed for professional audio applications. It features dual impedance configurations on both primary (200, 50/50 Ohms) and secondary (600, 150/150 Ohms) windings, with a frequency response spanning 20Hz to 20kHz. The 850E is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component procurement.

Substiute Parts

850E

Hammond ManufacturingIn Stock: 755850E Datasheet

Current PartRFQ

850EA

Hammond ManufacturingIn Stock: 1055850EA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Hammond Manufacturing 850E is determined by strict equivalence across the following critical parameters:

• Impedance matching on both primary and secondary windings (200, 50/50 Ohms primary; 600, 150/150 Ohms secondary)
• DC resistance values (27 Ohm primary; 68 Ohm secondary)
• Frequency response characteristics (20Hz ~ 20kHz, ±0.5dB)
• Insertion loss specification (1dB)
• Power level rating (15dB)
• Broadcast quality transformer classification
• Chassis mount configuration
• Physical dimensions and height constraints
• RoHS3 compliance status

The 850EA meets all substitution criteria as a functionally equivalent alternative, with the primary distinction being termination style (wire leads versus solder lug) and packaging format (bulk versus standard).

Parameter Comparison

Engineering Selection Recommendations

The 850EA serves as the direct functional equivalent to the obsolete 850E. Both transformers maintain identical electrical specifications across impedance, frequency response, insertion loss, and power level parameters. The 850EA carries active product status from Hammond Manufacturing, ensuring ongoing availability and supply chain continuity.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current procurement. The primary consideration for selection between these parts is termination style: the 850E uses solder lug termination while the 850EA employs wire leads. Circuit board layout and connection methodology must accommodate this difference during component substitution.

Frequently Asked Questions (FAQ)

Q: Can the 850EA directly replace the 850E in existing designs?

A: The 850EA is electrically and mechanically equivalent to the 850E across all critical parameters. The primary difference is termination style (wire leads versus solder lug). Direct replacement is feasible if the circuit board or chassis connection method can accommodate wire lead termination.

Q: Why is the 850E classified as obsolete?

A: The 850E has been discontinued by Hammond Manufacturing. The 850EA represents the active product line continuation with identical electrical performance.

Q: Are there dimensional constraints that affect substitution?

A: Both transformers share identical mounting dimensions (1.700" L x 1.200" W) and maximum seated height (1.650"). Physical fit within existing chassis or PCB layouts is not a limiting factor for substitution.

Q: What is the significance of the different packaging formats?

A: The 850E is supplied in standard packaging while the 850EA is supplied in bulk packaging. This distinction affects procurement and inventory management but does not impact electrical or mechanical performance.

Q: Do both parts meet current regulatory compliance standards?

A: Both the 850E and 850EA are ROHS3 compliant and REACH unaffected, satisfying current environmental and regulatory requirements for electronic component procurement.