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Product Detailed Parameters
- Description：AUDIO XFMR 100CT / 3.2 TH
- Series：106
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：1.080" L x 0.880" W (27.43mm x 22.35mm)
- Height - Seated (Max)：0.950" (24.13mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：100CT
- Impedance - Secondary (Ohms)：3.2
- DC Resistance (DCR) - Primary：4.4Ohm
- DC Resistance (DCR) - Secondary：300mOhm
- Transformer Type：Miniature Epoxy Potted
- Frequency Range：170Hz
- Frequency Response：-1dB
- Voltage - Isolation：200V
- Insertion Loss：1dB
- Return Loss：-
- Power Level：1.5W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 106S is a miniature epoxy-encapsulated audio transformer designed for through-hole mounting. It features a primary impedance of 100CT ohms and a secondary impedance of 3.2 ohms. The device operates with a frequency range starting at 170Hz and maintains a frequency response within -1dB. Electrical specifications include a primary DC resistance of 4.4 ohms and a secondary DC resistance of 300 milliohms. The unit supports a power level of 1.5W and provides 200V isolation voltage. Physical dimensions are 1.080 inches in length, 0.880 inches in width, with a maximum installation height of 0.950 inches.
Feature Summary
- Miniature epoxy encapsulation for environmental protection
- Center-tapped primary winding configuration
- Through-hole PC pin termination style
Applications
- Audio signal coupling circuits
- Impedance matching between low-impedance sources and loads
- Electronic equipment requiring galvanic isolation
Procurement Notes
Verify the specific part number against official Hammond Manufacturing documentation to confirm electrical parameters such as impedance ratios and DC resistance values. Ensure that the through-hole package dimensions align with the target PCB layout constraints. Confirm compliance requirements including RoHS status and moisture sensitivity levels prior to procurement.
Selection Notes
Select this component when a center-tapped primary is required for balanced audio applications or specific impedance transformation ratios. Consider the 1.5W power handling capability and the 170Hz lower frequency limit for suitability in the intended circuit design. Evaluate the physical footprint and lead spacing against available board space.
Part Context
This component belongs to the Hammond 106 series of audio transformers. The series includes variants with different impedance configurations, such as the 106E model which features a 600CT to 600 ohm ratio. These components share similar miniature encapsulation styles and through-hole mounting characteristics tailored for compact electronic assemblies.
Replacement Considerations
Cross-reference with other Hammond 106 series models like the 106E if impedance ratios differ from system requirements. Verify that substitute components maintain equivalent isolation voltages and physical mounting dimensions.
