SPT-304

$5.85

Description：AUDIO XFMR 48CT / 8CT TH
Series：SPT-300
Mfr：Prem Magnetics, Inc.
Package：Bulk

SKU:2043ca2b56ec Category: Audio Transformers Brand: Prem Magnetics, Inc.

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Product introduction

Product Detailed Parameters

Description：AUDIO XFMR 48CT / 8CT TH
Series：SPT-300
Mfr：Prem Magnetics, Inc.
Package：Bulk
Mounting Type：Through Hole
Size / Dimension：0.697" L x 0.630" W (17.70mm x 16.00mm)
Height - Seated (Max)：0.551" (14.00mm)
Termination Style：PC Pin
Turns Ratio - Primary:Secondary：-
Impedance - Primary (Ohms)：48CT
Impedance - Secondary (Ohms)：8CT
DC Resistance (DCR) - Primary：2.5Ohm
DC Resistance (DCR) - Secondary：500mOhm
Transformer Type：Economical Open Type
Frequency Range：-
Frequency Response：-
Voltage - Isolation：1000Vrms
Insertion Loss：-
Return Loss：-
Power Level：100mW
Operating Temperature：-
Approval Agency：-

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SPT-304

Overview

The SPT-304 is an audio transformer manufactured by Prem Magnetics, Inc., designed for through-hole mounting. It features a power rating of 100mW and specific impedance characteristics with a primary impedance of 8CT Ohms and a secondary impedance of 48CT Ohms. The component utilizes a compact rectangular package measuring 17.70mm in length, 16.00mm in width, and a maximum seated height of 14.00mm. It is RoHS3 compliant and suitable for low to medium-power audio applications requiring voice or data coupling.

Feature Summary

Through-hole mounting configuration
Audio signal transformation capability
RoHS3 compliance

Applications

Low to medium-power audio circuits
Voice coupling applications
Data coupling interfaces

Procurement Notes

Verify the exact impedance configuration (48CT:8CT) against schematic requirements. Confirm RoHS3 status if environmental compliance is mandatory. Ensure PCB footprint matches the specified dimensions of 17.70mm x 16.00mm. Check for lead-free status documentation from the manufacturer.

Selection Notes

Select this component for applications requiring specific audio impedance matching between 8-ohm and 48-ohm circuits. Consider the through-hole form factor for mechanical stability. Evaluate the 100mW power rating to ensure it meets the signal level requirements of the target audio stage without saturation.

Part Context

Prem Magnetics specializes in custom coil winding and standard electrical transformers. The SPT series includes various audio transformers tailored for specific impedance ratios. This model represents a standard off-the-shelf option within their audio transformer portfolio, distinct from their custom inductor or power transformer lines.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing circuit designs before considering alternative manufacturers.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.