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Hammond Manufacturing 850Q Equivalent & Substitute Parts Engineering Reference
Part Overview
The Hammond Manufacturing 850Q is an audio transformer designed for broadcast quality applications, featuring a primary impedance of 40k, 10k/10k ohms and secondary impedance of 40k, 10k/10k ohms. It provides a frequency range of 20Hz to 20kHz and is configured for chassis mount installations with a solder lug termination. The product is currently marked as obsolete, making it necessary to identify alternative models with matching electrical and mechanical specifications to enable direct replacement in existing designs and inventories.
Substiute Parts
Key Parameters
| Manufacturer Part Number | Impedance - Primary (Ohms) | Impedance - Secondary (Ohms) | DC Resistance (DCR) - Primary | DC Resistance (DCR) - Secondary | Frequency Range | Insertion Loss | Power Level | Mounting Type | Size / Dimension | Height - Seated (Max) | Termination Style | RoHS Status | REACH Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 850Q | 40k, 10k/10k | 40k, 10k/10k | 4.89kOhm | 4.98kOhm | 20Hz ~ 20kHz | 1dB | 15dB | Chassis Mount | 1.700" L x 1.200" W (43.18mm x 30.48mm) | 1.650" (41.91mm) | Solder Lug | ROHS3 Compliant | REACH Unaffected |
Substitute Part Grouping Explanation
Substitute relationships are based strictly on matching the following allowed parameters: impedance values (primary and secondary), DC resistance, frequency range, insertion loss, power level, mounting type, physical dimensions, termination style, RoHS compliance, and REACH status. These parameters ensure electrical functionality, mechanical compatibility, and regulatory alignment between the main and alternative part numbers.
Parameter Comparison
| Manufacturer Part Number | Impedance - Primary (Ohms) | Impedance - Secondary (Ohms) | DC Resistance (DCR) - Primary | DC Resistance (DCR) - Secondary | Frequency Range | Insertion Loss | Power Level | Mounting Type | Size / Dimension | Height - Seated (Max) | Termination Style | RoHS Status | REACH Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 850Q | 40k, 10k/10k | 40k, 10k/10k | 4.89kOhm | 4.98kOhm | 20Hz ~ 20kHz | 1dB | 15dB | Chassis Mount | 1.700" L x 1.200" W (43.18mm x 30.48mm) | 1.650" (41.91mm) | Solder Lug | ROHS3 Compliant | REACH Unaffected |
| 850QA | 40k, 10k/10k | 40k, 10k/10k | 4.89kOhm | 4.98kOhm | 20Hz ~ 20kHz | 1dB | 15dB | Chassis Mount | 1.700" L x 1.200" W (43.18mm x 30.48mm) | 1.650" (41.90mm) | Wire Leads | ROHS3 Compliant | REACH Unaffected |
Engineering Selection Recommendations
Select substitute parts based on product status and provided compliance information. The main part, 850Q, is obsolete, while substitute part 850QA is listed as active. Both parts are ROHS3 compliant and REACH unaffected. Review termination style for system compatibility.
Frequently Asked Questions (FAQ)
Q: What is the principal criteria for substituting Hammond Manufacturing 850Q with 850QA?
A: Substitution is determined by matching impedance, DC resistance, frequency range, power ratings, physical dimensions, mounting style, and compliance parameters.
Q: Are termination styles between 850Q and 850QA interchangeable?
A: The 850Q uses solder lug termination, while the 850QA uses wire leads. Both types are suitable for chassis mount, but termination method compatibility with the installation should be confirmed.
Q: Does the substitute part 850QA meet the same regulatory standards as 850Q?
A: Yes, both parts are ROHS3 compliant and REACH unaffected.
Q: Are physical dimensions of 850Q and 850QA identical for direct mechanical replacement?
A: Both parts have matching size and mounting dimensions, supporting direct replacement where required.
Q: Does substitution affect electrical performance?
A: All key electrical specifications provided, including impedance, resistance, frequency range, insertion loss, and power level, are matched between both parts for supported substitutions.
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