Audio Transformers

Use the filters and product table below to compare Audio Transformers components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.

If you already have a target part number, package, rating or quantity, send the requirement to Winsun (HK) Electronics for availability checks, BOM sourcing, shortage support and quotation assistance.

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Mfr. Part #	Availability	Price	Quantity	Datasheet	Series	Packaging	Product Status	Turns Ratio - Primary:Secondary	Impedance - Primary (Ohms)	Impedance - Secondary (Ohms)	DC Resistance (DCR) - Primary	DC Resistance (DCR) - Secondary	Transformer Type	Frequency Range	Frequency Response	Voltage - Isolation	Insertion Loss	Return Loss	Power Level	Operating Temperature	Approval Agency	Mounting Type	Size / Dimension	Height - Seated (Max)	Termination Style
SP-33-B AUDIO XFMR 1K / 50 TH Triad Magnetics	4,121	-	RFQ	Datasheet	Red-Spec	Bulk	Active	4.4:1	1k	50	145Ohm	8Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-20 AUDIO XFMR 10KCT / 1.2KCT TH Triad Magnetics	4,164	-	RFQ	Datasheet	Red-Spec	Bulk	Active	2.88:1	10kCT	1.2kCT	1.05kOhm	200Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-128-B AUDIO XFMR TH Triad Magnetics	3,454	-	RFQ	Datasheet	Red-Spec	Bulk	Active	-	-	-	15Ohm	-	-	-	-	1000VRMS @ 1 Second	-	-	-	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-20-B AUDIO XFMR 10KCT / 1.2KCT TH Triad Magnetics	3,782	-	RFQ	Datasheet	Red-Spec	Bulk	Active	2.88:1	10kCT	1.2kCT	1.05kOhm	200Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-21-B AUDIO XFMR 10KCT / 2KCT TH Triad Magnetics	3,546	-	RFQ	Datasheet	Red-Spec	Bulk	Active	2.24:1	10kCT	2kCT	1.05kOhm	330Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-22-B AUDIO XFMR 10K / 2K 500/500 TH Triad Magnetics	1,384	-	RFQ	Datasheet	Red-Spec	Bulk	Active	4.48:1:1	10k	2k, 500/500	1.05kOhm	146/168Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-29-B AUDIO XFMR 10KCT / 500CT TH Triad Magnetics	3,285	-	RFQ	Datasheet	Red-Spec	Bulk	Active	4.47:1	10kCT	500CT	1.05kOhm	80Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-48-B AUDIO XFMR 7.5KCT / 12 TH Triad Magnetics	3,274	-	RFQ	Datasheet	Red-Spec	Bulk	Active	25:1	7.5kCT	12	796Ohm	2.9Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-68-B XFMR 10K / 10K 2.5K/2.5K TH Triad Magnetics	1,513	-	RFQ	Datasheet	Red-Spec	Bulk	Active	2.1:1	10k	10k, 2.5k/2.5k	1kOhm	565/650Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-52-B AUDIO XFMR 1.5KCT / 600 TH Triad Magnetics	2,176	-	RFQ	Datasheet	Red-Spec	Bulk	Active	1.58:1	1.5kCT	600	168Ohm	92Ohm	Audio Coupling	300Hz ~ 100kHz	±2dB	1000VRMS @ 1 Second	-	-	50mW	-40°C ~ 85°C	-	Through Hole	0.410" L x 0.310" W (10.41mm x 7.87mm)	0.465" (11.80mm)	PC Pin

WINSUN SOURCING SUPPORT

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Send the target part number, manufacturer, specifications and quantity. Winsun (HK) Electronics can assist with availability checks, quotation support, shortage sourcing and alternative-part options when appropriate.

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FREQUENTLY ASKED QUESTIONS

Audio Transformers FAQ

Common questions about filtering, comparing and sourcing Audio Transformers components.

How can I narrow the Audio Transformers selection?

Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.

Should I confirm the datasheet before selecting a part?

Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.

Can Winsun (HK) Electronics help source a specific Audio Transformers part number?

Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.

Do you support BOM, shortage or alternative-part requirements?

Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.