Audio Transformers

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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
HS-29 AUDIO XFMR 20K/80K OHM SEC Triad Magnetics	3,662	-	RFQ	Datasheet	HS	Box	Active	1:2	20k, 5k	80k, 20k	935Ohm, 1.02kOhm	1.647kOhm, 2.272kOhm	Impedance Matching	20Hz ~ 20kHz	-2.35dB	-	-	-	20mW	0°C ~ 70°C	-	Chassis Mount	1.797" L x 1.469" W (45.64mm x 37.31mm)	2.531" (64.29mm)	Wire Leads
SPT-202 AUDIO XFMR 1KCT / 8CT TH Prem Magnetics, Inc.	2,889	-	RFQ	Datasheet	SPT-200	Bulk	Active	-	1kCT	8CT	60Ohm	800mOhm	Economical Open Type	-	-	1000Vrms	-	-	75mW	-	-	Through Hole	0.598" L x 0.472" W (15.20mm x 12.00mm)	0.433" (11.00mm)	PC Pin
SPT-204 AUDIO XFMR 10KCT / 2KCT TH Prem Magnetics, Inc.	4,001	-	RFQ	Datasheet	SPT-200	Bulk	Active	-	10kCT	2kCT	550Ohm	200Ohm	Economical Open Type	-	-	1000Vrms	-	-	75mW	-	-	Through Hole	0.598" L x 0.472" W (15.20mm x 12.00mm)	0.433" (11.00mm)	PC Pin
TX-10B AUDIO XFMR 10K / 10K CHAS MNT Radio Design Labs	1,452	-	RFQ	Datasheet	TX™	Retail Package	Active	-	10k	10k	-	-	Impedance Matching	20Hz ~ 20kHz	±0.5dB	-	-	-	-	0°C ~ 55°C	CE	Chassis Mount	1.500" L x 1.201" W (38.10mm x 30.50mm)	3.000" (76.20mm)	Screw Terminal
140N AUDIO XFMR 50 / 1.5K CHAS MNT Hammond Manufacturing	4,201	-	RFQ	Datasheet	140	Bulk	Obsolete	1:5:5	50	1.5k	-	-	Shielded	70Hz ~ 11kHz	±1dB	-	-	-	-	-	-	Chassis Mount	1.250" Dia (31.75mm)	1.000" (25.40mm)	Wire Leads
140Q AUDIO XFMR 600CT / 600CT CHAS MT Hammond Manufacturing	2,019	-	RFQ	Datasheet	140	Bulk	Obsolete	1:1	600CT	600CT	-	-	Shielded	70Hz ~ 11kHz	±1dB	-	-	-	-	-	-	Chassis Mount	1.250" Dia (31.75mm)	1.000" (25.40mm)	Wire Leads
1620A XFMR 6.6KCT / 4, 8, 16 CHAS MNT Hammond Manufacturing	4,489	-	RFQ	Datasheet	A	Box	Obsolete	-	6.6kCT	4, 8, 16	66.16Ohm, 74.93Ohm	170mOhm, 300mOhm, 440mOhm	Push-Pull Audiophile, Ultra-Linear - Tube Output	30Hz ~ 30kHz	±1dB	2000V @ 1 Second	-	-	20W	-	-	Chassis Mount	3.500" L x 2.500" W (88.90mm x 63.50mm)	3.060" (77.72mm)	Wire Leads
807 XFMR 30, 7.5/7.5 / 2.4K, 600/600 Hammond Manufacturing	3,389	-	RFQ	Datasheet	800	Bulk	Obsolete	-	30, 7.5/7.5	2.4k, 600/600	-	-	Broadcast Quality	50Hz ~ 15kHz	±0.5dB	-	1dB	-	15dB	-	-	Chassis Mount	1.752" L x 1.252" W (44.50mm x 31.80mm)	2.559" (65.00mm)	Solder Lug
1650KP AUDIO XFMR 3.4KCT / 4, 8, 16 TH Hammond Manufacturing	2,481	-	RFQ	Datasheet	1600	Bulk	Obsolete	-	3.4kCT	4, 8, 16	-	-	Push-Pull Potted, Ultra-Linear - Tube Output	30Hz ~ 30kHz	±1dB	-	-	-	50W	-	-	Through Hole	3.880" L x 3.310" W (98.55mm x 84.07mm)	4.250" (107.95mm)	-
SPT-130 AUDIO XFMR 600CT / 600CT TH Prem Magnetics, Inc.	3,235	-	RFQ	Datasheet	-	Bulk	Active	-	600CT	600CT	45Ohm	40Ohm	Economical Open Type	-	-	1000Vrms	-	-	75mW	-	-	Through Hole	0.598" L x 0.472" W (15.20mm x 12.00mm)	0.433" (11.00mm)	PC Pin
SPT-203 AUDIO XFMR 10KCT / 600CT TH Prem Magnetics, Inc.	3,339	-	RFQ	Datasheet	SPT-200	Bulk	Active	-	10kCT	600CT	450Ohm	100Ohm	Economical Open Type	-	-	1000Vrms	-	-	75mW	-	-	Through Hole	0.598" L x 0.472" W (15.20mm x 12.00mm)	0.433" (11.00mm)	PC Pin
SPT-302 AUDIO XFMR 500CT / 500CT TH Prem Magnetics, Inc.	100	-	RFQ	Datasheet	SPT-300	Bulk	Active	-	500CT	500CT	30Ohm	28Ohm	Economical Open Type	-	-	1000Vrms	-	-	100mW	-	-	Through Hole	0.697" L x 0.630" W (17.70mm x 16.00mm)	0.551" (14.00mm)	PC Pin
SPT-301 AUDIO XFMR 500CT / 8CT TH Prem Magnetics, Inc.	100	-	RFQ	Datasheet	SPT-300	Bulk	Active	-	500CT	8CT	22Ohm	800mOhm	Economical Open Type	-	-	1000Vrms	-	-	100mW	-	-	Through Hole	0.697" L x 0.630" W (17.70mm x 16.00mm)	0.551" (14.00mm)	PC Pin
SPT-304 AUDIO XFMR 48CT / 8CT TH Prem Magnetics, Inc.	100	-	RFQ	Datasheet	SPT-300	Bulk	Active	-	48CT	8CT	2.5Ohm	500mOhm	Economical Open Type	-	-	1000Vrms	-	-	100mW	-	-	Through Hole	0.697" L x 0.630" W (17.70mm x 16.00mm)	0.551" (14.00mm)	PC Pin
SPT-403 AUDIO XFMR 1.2KCT / 8CT TH Prem Magnetics, Inc.	100	-	RFQ	Datasheet	SPT-400	Bulk	Active	-	1.2kCT	8CT	80Ohm	800mOhm	Economical Open Type	-	-	1000Vrms	-	-	200mW	-	-	Through Hole	0.799" L x 0.571" W (20.30mm x 14.50mm)	0.638" (16.20mm)	PC Pin
PAM-D-3.5-13T Fender Reverb Driver, 3.5 Watts Pacific Transformer	2,537	-	RFQ	Datasheet	-	Tape & Box (TB)	Active	-	25k	8	-	-	General Purpose	-	-	-	-	-	3.5W	-	-	Chassis Mount	1.836" L x 1.437" W (46.64mm x 36.50mm)	1.750" (44.45mm)	Wire Leads
TY-403P AUDIO XFMR 600 / 600 TH Triad Magnetics	1,237	-	RFQ	Datasheet	TY	Bulk	Active	1.81:1	600	600	80Ohm	56Ohm, 56Ohm	Data/Voice Coupling	300Hz ~ 3.5kHz	±0.5dB	1500VAC	1.75dB Typ	15dB Typ	-45dB ~ 7dB	-20°C ~ 85°C	-	Through Hole	0.815" L x 1.250" W (20.70mm x 31.75mm)	0.530" (13.46mm)	PC Pin
TY-250P AUDIO XFMR 1KCT / 1KCT TH Triad Magnetics	1,743	-	RFQ	Datasheet	TY	Box	Active	1:1, 2:1	1kCT	1kCT	172Ohm	172Ohm	Impedance Matching	20Hz ~ 20kHz	±1dB	1500VAC	2.8dB Max @ 1kHz	-	-	-40°C ~ 105°C	-	Through Hole	0.800" L x 0.770" W (20.32mm x 19.56mm)	0.700" (17.78mm)	PC Pin
MET-60 AUDIO XFMR 135 / 135CT TH Tamura	4,006	-	RFQ	Datasheet	MET	Tube	Active	1:1	135	135CT	10.5Ohm	10.8Ohm	Data/Voice Coupling	300Hz ~ 100kHz	±2dB	1500VRMS @ 1 Minute	-	-	50mW	-20°C ~ 85°C	-	Through Hole	0.409" L x 0.310" W (10.40mm x 7.87mm)	0.465" (11.80mm)	PC Pin
SP-42 AUDIO XFMR 150CT / 12 TH Triad Magnetics	1,801	-	RFQ	Datasheet	Red-Spec	Bulk	Active	3.54:1	150CT	12	18Ohm	2.7Ohm	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

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Audio Transformers FAQ

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Yes. Our sourcing team can review shortage and obsolete-part requirements and help check available supply channels or possible alternatives when appropriate.

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