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Product Detailed Parameters
- Description：AUDIO XFMR 1.2KCT / 8CT TH
- Series：SPT-400
- Mfr：Prem Magnetics, Inc.
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：0.799" L x 0.571" W (20.30mm x 14.50mm)
- Height - Seated (Max)：0.638" (16.20mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：1.2kCT
- Impedance - Secondary (Ohms)：8CT
- DC Resistance (DCR) - Primary：80Ohm
- DC Resistance (DCR) - Secondary：800mOhm
- Transformer Type：Economical Open Type
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：1000Vrms
- Insertion Loss：-
- Return Loss：-
- Power Level：200mW
- Operating Temperature：-
- Approval Agency：-
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Overview
The SPT-403 is a general-purpose audio output transformer manufactured by Prem Magnetics, Inc. It features a primary impedance of 1.2kΩ center-tapped and a secondary impedance of 8Ω center-tapped. Designed for through-hole mounting, this component facilitates impedance matching in audio circuits. The device serves as an output transformer suitable for standard audio applications requiring specific impedance transformation ratios.
Feature Summary
- Center-tapped primary winding configuration
- Center-tapped secondary winding configuration
- Through-hole mounting style
Applications
- Audio output stages
- Impedance matching networks
- General purpose audio transformers
Procurement Notes
Verify the exact part number SPT-403 against manufacturer documentation to ensure correct impedance specifications (1.2kCT:8CT). Confirm that the through-hole package type aligns with your PCB layout requirements. Check for any specific handling instructions or environmental ratings provided in the official datasheet before integration.
Selection Notes
Select the SPT-403 when a 1.2kΩ center-tapped primary to 8Ω center-tapped secondary impedance ratio is required for audio output applications. Ensure the circuit design accommodates the through-hole mounting format. Consider the physical dimensions and lead spacing if space constraints exist within the target assembly.
Part Context
Prem Magnetics, Inc. specializes in custom coil manufacturing and standard electrical transformers. The SPT-403 belongs to their line of audio transformers, which are often utilized in applications ranging from aerospace to consumer electronics. The company emphasizes domestic manufacturing and custom design capabilities.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided source material. Consult manufacturer documentation for potential cross-references or equivalent components with matching impedance ratios.
