Prem Magnetics

Prem Magnetics

Prem Magnetics specializes in the production of coils, inductors, and transformers. As a multi-generational, family-owned manufacturer, we prioritize company culture and family values. With an average employee tenure of approximately ten years, our team members are integral parts of the Prem Magnetics family. Leveraging our expertise as transformer manufacturers and coil winders, we are dedicated to crafting reliable products with longevity in mind. Our commitment to supplying thoroughly tested transformers and coils reflects our unwavering dedication to providing top-quality solutions to our customers.

Audio Transformers

Results:
8
Series
DC Resistance (DCR) - Primary
Impedance - Primary (Ohms)
DC Resistance (DCR) - Secondary
Impedance - Secondary (Ohms)
Height - Seated (Max)
Size / Dimension
Power Level
Insertion Loss
Frequency Range
Operating Temperature
Termination Style
Voltage - Isolation
Approval Agency
Mounting Type
Transformer Type
Turns Ratio - Primary
Return Loss
Frequency Response
Results remaining8
Applied Filters:
Prem Magnetics
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ImageProduct DetailPriceAvailabilityECAD ModelOperating TemperatureMounting TypeHeight - Seated (Max)Termination StyleImpedance - Primary (Ohms)Impedance - Secondary (Ohms)DC Resistance (DCR) - PrimaryDC Resistance (DCR) - SecondaryTransformer TypeFrequency RangeFrequency ResponseInsertion LossReturn LossPower LevelApproval AgencyVoltage - IsolationTurns Ratio - PrimarySeriesSize / Dimension
SPT-302
INTERSTAGE TFMR 500CT:500CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.551" (14.00mm)
PC Pin
500CT
500CT
30Ohm
28Ohm
Economical Open Type
-
-
-
-
100mW
-
1000Vrms
Secondary:-
SPT-300
0.697" L x 0.630" W (17.70mm x 16.00mm)
SPT-130
COUPLING TFMR 600CT:600CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.433" (11.00mm)
PC Pin
600CT
600CT
45Ohm
40Ohm
Economical Open Type
-
-
-
-
75mW
-
1000Vrms
Secondary:-
-
0.598" L x 0.472" W (15.20mm x 12.00mm)
SPT-403
OUTPUT TFMR 1.2KCT:8CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.638" (16.20mm)
PC Pin
1.2kCT
8CT
80Ohm
800mOhm
Economical Open Type
-
-
-
-
200mW
-
1000Vrms
Secondary:-
SPT-400
0.799" L x 0.571" W (20.30mm x 14.50mm)
SPT-202
OUTPUT TFMR 1KCT:8CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.433" (11.00mm)
PC Pin
1kCT
8CT
60Ohm
800mOhm
Economical Open Type
-
-
-
-
75mW
-
1000Vrms
Secondary:-
SPT-200
0.598" L x 0.472" W (15.20mm x 12.00mm)
SPT-204
DRIVER TFMR 10KCT:2KCT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.433" (11.00mm)
PC Pin
10kCT
2kCT
550Ohm
200Ohm
Economical Open Type
-
-
-
-
75mW
-
1000Vrms
Secondary:-
SPT-200
0.598" L x 0.472" W (15.20mm x 12.00mm)
SPT-301
OUTPUT TFMR 500CT:8CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.551" (14.00mm)
PC Pin
500CT
8CT
22Ohm
800mOhm
Economical Open Type
-
-
-
-
100mW
-
1000Vrms
Secondary:-
SPT-300
0.697" L x 0.630" W (17.70mm x 16.00mm)
SPT-203
COUPLING TFMR 10KCT:600CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.433" (11.00mm)
PC Pin
10kCT
600CT
450Ohm
100Ohm
Economical Open Type
-
-
-
-
75mW
-
1000Vrms
Secondary:-
SPT-200
0.598" L x 0.472" W (15.20mm x 12.00mm)
SPT-304
OUTPUT TFMR 48CT:8CT OHM
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Quantity
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PCB Symbol, Footprint & 3D Model
-
Through Hole
0.551" (14.00mm)
PC Pin
48CT
8CT
2.5Ohm
500mOhm
Economical Open Type
-
-
-
-
100mW
-
1000Vrms
Secondary:-
SPT-300
0.697" L x 0.630" W (17.70mm x 16.00mm)

About  Audio Transformers

Audio transformers, like other types of transformers, are composed of multiple coils of wire that are magnetically coupled together. These coils are typically wound around a magnetic core. Audio transformers have specific characteristics that distinguish them from other transformer types. They are designed and optimized to operate within the frequency range that is perceptible to the human ear, which spans approximately 20 Hz to 20 kHz. The primary purpose of audio transformers is to isolate and transform analog information. They play a crucial role in various applications where audio signals need to be transmitted, processed, or converted. Unlike transformers used for digital signaling protocols, audio transformers are specifically tailored for handling analog audio signals. One common application of audio transformers is in vacuum tube amplifiers, where they serve as output transformers. These transformers are responsible for matching the high impedance of the vacuum tube amplifier to the lower impedance of the speaker, allowing for efficient power transfer and impedance matching. Another example is voice coupling transformers used in traditional telecom applications. These transformers are employed to couple and transmit voice signals in telecommunication systems, ensuring clear and reliable communication between users. In summary, audio transformers are a specialized type of transformer designed for use within the audible frequency range. They enable the isolation, transformation, and transmission of analog audio signals in various applications such as vacuum tube amplifiers and traditional telecom systems.