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Product Detailed Parameters
- Description：XFMR 25KCT 20KCT / 1KCT 800CT TH
- Series：Red-Spec
- Mfr：Triad Magnetics
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：0.410" L x 0.310" W (10.41mm x 7.87mm)
- Height - Seated (Max)：0.465" (11.80mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：5:01
- Impedance - Primary (Ohms)：25kCT, 20kCT
- Impedance - Secondary (Ohms)：1kCT, 800CT
- DC Resistance (DCR) - Primary：1.7kOhm
- DC Resistance (DCR) - Secondary：115Ohm
- Transformer Type：Audio Coupling
- Frequency Range：300Hz ~ 100kHz
- Frequency Response：±2dB
- Voltage - Isolation：1000VRMS @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：40mW
- Operating Temperature：-40°C ~ 85°C
- Approval Agency：-
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Overview
The Triad Magnetics SP-13-B is a high-reliability audio transformer from the Red-Spec series, designed for through-hole mounting. It features a 5:1 turns ratio and operates within a frequency range of 300Hz to 100kHz. The component has a power rating of 40 mW and a current rating of 500 uA. Primary impedance options include 25kCT and 20kCT, with secondary impedances of 1kCT and 800CT. DC resistance values are 1.7 kOhms for the primary and 115 ohms for the secondary. It functions reliably in temperatures between -40°C and 85°C.
Feature Summary
- High reliability construction suitable for demanding audio designs
- Encapsulated design providing durability and precision
- Through-hole PC pin terminals for secure board integration
Applications
- Audio signal processing circuits
- Impedance matching in audio equipment
- Signal isolation in electronic systems
Procurement Notes
Verify the specific impedance configuration required for your circuit design, as the SP-13 variant offers multiple primary and secondary impedance options including 25kCT/1kCT and 20kCT/800CT. Confirm that the through-hole package style aligns with your PCB layout requirements. Ensure the operating temperature range of -40°C to 85°C meets your environmental specifications. Check datasheet revisions for any updates on RoHS compliance or manufacturing changes.
Selection Notes
Select this component when a robust, encapsulated audio transformer with a 5:1 ratio is needed for through-hole assembly. Consider the specific impedance values (25kCT vs 20kCT) to match source and load requirements. The wide frequency response up to 100kHz supports broad audio applications. Verify thermal limits for high-temperature environments.
Part Context
The SP-13-B belongs to Triad Magnetics' Red-Spec series, known for high reliability in audio and signal applications. This series utilizes encapsulated construction to enhance durability against mechanical stress and environmental factors. The component serves as a critical interface for signal transformation in professional audio and instrumentation devices.
Replacement Considerations
Cross-reference with other Triad Magnetics audio transformers in the Red-Spec series if specific impedance variants differ. Verify that substitute components maintain the same 5:1 ratio, frequency range, and through-hole mounting style to ensure compatibility.
