Audio Transformers

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Part	Manufacturer	Transformer Type	Mounting Feature	Approvals (V)	Terminal Finish	Impedance (Primary)	Power Rating	Impedance (Secondary)	No. of Winding (Primary)	Isolation Voltage	Insertion Loss	Maximum DC Unbalance Current	No. of Winding (Secondary)	Sub-Category	Dimensions	Maximum Operating Temperature	Application	Minimum Operating Temperature	Height	Width	Diameter	Load Resistance	Additional Features	JESD-609 Code	Minimum Operating Frequency	Length	Turns Ratio (Np:Ns)	Maximum Operating Frequency
SP-70	Triad Magnetics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS		600 OHMS	1	1000 V		3000 mA	1	Other Transformers	L10.41XB7.87XH11.81 (mm)	85 Cel	SIGNAL	-40 Cel	11.81 mm	7.87 mm		92 ohm			.3 KHz	10.41 mm	1:1	100 KHz
1645	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			5000 OHMS CT		16 OHMS								105 Cel	OUTPUT	-40 Cel	77.724 mm	63.5 mm					.03 KHz	95.25 mm		30 KHz
81200	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	600 OHMS CT		30 OHMS CT							L9.52XB9.52XH9.53 (mm)		AUDIO		10.29 mm	9.52 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	9.52 mm		100 KHz
L-8345	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED	MIL-PRF-27	Tin/Lead (Sn/Pb)	500 OHMS CT		50 OHMS CT							D12.7XH8.9 (mm)	130 Cel	AUDIO	-55 Cel			12.7 mm			e0	.3 KHz	8.9 mm		75 KHz
TY-145P	Triad Magnetics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS CT		600 OHMS CT	1		1.5 dB	15 mA	1		L20.57XB14.99XH15.75 (mm)	105 Cel	INPUT	0 Cel	15.75 mm	14.99 mm		58 ohm			.2 KHz	20.57 mm	1:1	15 KHz
108E	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS CT		3.2 OHMS								85 Cel	AUDIO		19.558 mm	19.558 mm					.3 KHz	26.162 mm		50 KHz
CSS135	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27		400 OHMS CT		2000 OHMS CT								130 Cel	AUDIO	-55 Cel			19.05 mm		LENGTH DIMENSION INCLUDE TERMINAL ALSO		.05 KHz	14.224 mm		30 KHz
MET-46-T	Triad Magnetics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS		600 OHMS							L10.41XB7.87XH11.81 (mm)				11.81 mm	7.87 mm			TURNS RATIO:1:1		.3 KHz	10.41 mm		3.5 KHz
70035	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	80 OHMS CT		32 OHMS CT							L7.9XB7.9XH8.18 (mm)		AUDIO		8.18 mm	7.9 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.9 mm		250 KHz
80560	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	20000 OHMS CT		1000 OHMS CT							L7.87XB7.87XH8.64 (mm)		AUDIO		8.64 mm	7.87 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.87 mm		250 KHz
1640SEA	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			1250 OHMS		16 OHMS								105 Cel	OUTPUT	-40 Cel	115.824 mm	95.25 mm					.02 KHz	125.476 mm		20 KHz
841A	Hammond Manufacturing	BROADCAST AUDIO TRANSFORMER	STUD MOUNT			20000 OHMS		200 OHMS									GENERAL PURPOSE		65.024 mm	31.75 mm					.05 KHz	44.45 mm		15 KHz
1650G	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			6600 OHMS CT		500 OHMS									OUTPUT		96.774 mm	79.502 mm					.03 KHz	95.25 mm		30 KHz
80030	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	50 OHMS CT		50 OHMS CT							L7.87XB7.87XH8.64 (mm)		AUDIO		8.64 mm	7.87 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.87 mm		250 KHz
83115	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	400 OHMS CT		120 OHMS CT							L20.32XB20.32XH14.74 (mm)	130 Cel	AUDIO	-55 Cel	15.37 mm	20.32 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.05 KHz	20.32 mm		30 KHz
108K	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			1500 OHMS CT		600 OHMS CT								85 Cel	AUDIO		19.558 mm	19.558 mm					.3 KHz	26.162 mm		50 KHz
SP-67	Triad Magnetics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED		GOLD OVER NICKEL	600 OHMS CT		600 OHMS CT	1	1000 V			1		L10.41XB7.87XH11.81 (mm)		SIGNAL		11.81 mm	7.87 mm		92 ohm		e4	.3 KHz	10.41 mm	1:1	100 KHz
80355	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	3000 OHMS CT		3000 OHMS CT							L7.87XB7.87XH8.64 (mm)		AUDIO		8.64 mm	7.87 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.87 mm		250 KHz
80360	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	3600 OHMS CT		3600 OHMS CT							L7.87XB7.87XH8.64 (mm)		AUDIO		8.64 mm	7.87 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.87 mm		250 KHz
LA-522	Torotel Products	GENERAL PURPOSE AUDIO TRANSFORMER
107V	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			25000 OHMS CT		600 OHMS CT								105 Cel	AUDIO	-40 Cel	16.002 mm	14.8844 mm					.3 KHz	16.002 mm		50 KHz
109K	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			1500 OHMS CT		600 OHMS CT								85 Cel	AUDIO		23.368 mm	23.622 mm					.3 KHz	33.401 mm		50 KHz
125D	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			48000 OHMS		208.8 OHMS								105 Cel	OUTPUT	-40 Cel	50.8 mm	44.45 mm					.15 KHz	82.55 mm		15 KHz
80040	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	100 OHMS CT		40 OHMS CT							L7.87XB7.87XH8.64 (mm)		AUDIO		8.64 mm	7.87 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.87 mm		250 KHz
80405	Pico Electronics	GENERAL PURPOSE AUDIO TRANSFORMER	SURFACE MOUNT	MIL-PRF-27	Tin/Lead (Sn/Pb)	7500 OHMS CT		600 OHMS CT							L7.87XB7.87XH8.64 (mm)		AUDIO		8.64 mm	7.87 mm			HEIGHT DIMENSION INCLUDES TERMINALS ALSO	e0	.4 KHz	7.87 mm		250 KHz
106EE	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS CT		600 OHMS CT									INPUT		22.352 mm	22.352 mm						27.432 mm
108G	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS CT		250 OHMS CT								85 Cel	AUDIO		19.558 mm	19.558 mm					.3 KHz	26.162 mm		50 KHz
1650E	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			8000 OHMS CT		16 OHMS									OUTPUT		77.724 mm	63.5 mm					.03 KHz	82.55 mm		30 KHz
SP-13	Triad Magnetics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED		Gold (Au) - with Nickel (Ni) barrier	25000 OHMS CT		1000 OHMS CT	1	1000 V			1		L10.41XB7.87XH11.81 (mm)		SIGNAL		11.81 mm	7.87 mm		115 ohm		e4	.3 KHz	10.41 mm	5:1	100 KHz
TY-141P	Triad Magnetics	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			10000 OHMS CT		10000 OHMS CT	1		1.5 dB	4 mA	1		L20.57XB14.99XH15.75 (mm)	105 Cel	INPUT	0 Cel	15.75 mm	14.99 mm		107 ohm			.2 KHz	20.57 mm	1:1	15 KHz
Z1604	Oep Walters Group Holdings	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS		600 OHMS							L18.0XB18.0XH12.6 (mm)	75 Cel		-20 Cel	12.6 mm	18 mm					.06 KHz	18 mm		25 KHz
104L	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			25000 OHMS		600 OHMS CT									INTERSTAGE
107J	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			1000 OHMS CT		600 OHMS CT								105 Cel	AUDIO	-40 Cel	16.002 mm	14.8844 mm					.3 KHz	16.002 mm		50 KHz
108H	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS CT		600 OHMS CT								85 Cel	AUDIO		19.558 mm	19.558 mm					.3 KHz	26.162 mm		50 KHz
109G	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			600 OHMS CT		250 OHMS CT								85 Cel	AUDIO		23.368 mm	23.622 mm					.3 KHz	33.401 mm		50 KHz
109J	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			1000 OHMS CT		600 OHMS CT								85 Cel	AUDIO		23.368 mm	23.622 mm					.3 KHz	33.401 mm		50 KHz
125H	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			10000 OHMS		8 OHMS								105 Cel	OUTPUT	-40 Cel	41.402 mm	25.4 mm					.15 KHz	71.374 mm		15 KHz
140Q	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			600 OHMS CT		600 OHMS CT									AUDIO		25.4 mm		31.8 mm				.007 KHz			11 KHz
140QEX	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			600 OHMS CT		600 OHMS CT									ISOLATION				31.8 mm				.02 KHz	25.4 mm		20 KHz
144F	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			500 OHMS CT		3.2 OHMS									OUTPUT		17.526 mm	17.526 mm					.15 KHz	32.004 mm		15 KHz
144G	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			500 OHMS CT		8 OHMS									OUTPUT		17.526 mm	17.526 mm					.15 KHz	32.004 mm		15 KHz
146C	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			48 OHMS CT		8 OHMS									OUTPUT		20.574 mm	22.352 mm					.15 KHz	41.402 mm		15 KHz
146N	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			2000 OHMS CT		8 OHMS									OUTPUT		20.574 mm	22.352 mm					.15 KHz	41.402 mm		15 KHz
148T	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	THROUGH HOLE MOUNTED			500 OHMS CT		3.2 OHMS									OUTPUT		17.526 mm	17.272 mm					.2 KHz	20.828 mm		15 KHz
1620	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			6600 OHMS CT	20 W	16 OHMS	3			158 mA	11	Other Transformers	88.9mm x 63.5mm x 77.72mm	105 Cel	OUTPUT	-40 Cel	77.724 mm	63.5 mm					.03 KHz	88.9 mm		30 KHz
1620A	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			6600 OHMS CT		16 OHMS								105 Cel	OUTPUT	-40 Cel	77.724 mm	63.5 mm					.03 KHz	88.9 mm		30 KHz
1650H	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			6600 OHMS CT		16 OHMS								105 Cel	OUTPUT	-40 Cel	96.774 mm	79.502 mm					.03 KHz	101.6 mm		30 KHz
1650HA	Hammond Manufacturing	GENERAL PURPOSE AUDIO TRANSFORMER	CHASSIS MOUNT			6600 OHMS CT		16 OHMS								105 Cel	OUTPUT	-40 Cel	96.774 mm	79.502 mm					.03 KHz	101.6 mm		30 KHz

Audio Transformers

Audio transformers are electronic components used in audio systems to provide signal isolation, impedance matching, and voltage level adjustment. They convert audio signals from one impedance level to another, allowing for efficient transmission and reception of audio signals. Audio transformers use electromagnetic induction to transfer the audio signal from one circuit to another, and they consist of two or more coils of wire wound around a magnetic core.

Audio transformers provide electrical isolation between input and output circuits, eliminate ground loop hum and other interference, match the impedance of input and output circuits, and adjust the voltage level of the audio signal. They have a frequency response that matches the frequency range of the audio signal, ensuring accurate and clear reproduction of sound. Audio transformers are used in recording studios, broadcast systems, musical instrument amplifiers, and telecommunication systems.