ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：TRANSFORMER
- Series：117
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：2.810" L x 1.500" W (71.37mm x 38.10mm)
- Height - Seated (Max)：1.690" (42.93mm)
- Termination Style：Solder Lug
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：32.3
- Impedance - Secondary (Ohms)：8
- DC Resistance (DCR) - Primary：400mOhm
- DC Resistance (DCR) - Secondary：-
- Transformer Type：Impedance Matching
- Frequency Range：100Hz ~ 10kHz
- Frequency Response：-
- Voltage - Isolation：500V
- Insertion Loss：2dB
- Return Loss：-
- Power Level：4W
- Operating Temperature：-40°C ~ 105°C
- Approval Agency：-
Download product information
Overview
The Hammond Manufacturing 117F4-BULK is a line matching audio transformer designed for chassis mounting. It features dual primary windings and a single secondary winding, supporting an input impedance of 8 ohms and an output impedance of 3.2 ohms. The unit operates within a frequency range of 100Hz to 9kHz with a power rating of 4W. Termination is achieved via solder lugs, and the physical dimensions are 71.37mm in length and 38.10mm in width.
Feature Summary
- Designed for coupling low-impedance speakers to high-impedance constant voltage distribution lines
- Provides electrical isolation between source and load circuits
- Supports flexible wiring configurations through multiple primary and secondary terminals
Applications
- Public address system speaker connections
- Commercial audio distribution networks
- Line matching for impedance transformation
Procurement Notes
Verify that the specific suffix '-BULK' corresponds to the bulk packaging variant rather than standard retail packaging. Confirm that the terminal type matches the required solder lug configuration for the target assembly. Ensure the 4W power rating aligns with the connected speaker's requirements to prevent thermal overload during operation.
Selection Notes
Select this component when a fixed 8-ohm to 3.2-ohm impedance transformation ratio is required for 70-volt audio systems. Consider the chassis mount style and solder lug termination for permanent installation. Evaluate the 4W power handling capacity against the maximum expected signal levels to ensure reliable performance without distortion or overheating.
Part Context
This model belongs to the Hammond 117 series of audio transformers, which are engineered for professional sound reinforcement applications. The series provides standardized impedance matching solutions for integrating various audio components into distributed speaker systems. These units are characterized by their robust construction and consistent frequency response across the audible spectrum.
Replacement Considerations
The Hammond 117E8 serves as a related alternative within the same series offering different impedance characteristics. Verify compatibility regarding physical mounting dimensions and terminal placement before substitution. Ensure the replacement unit supports the specific 70V line voltage and power requirements of the existing circuit design.
