Audio Transformers

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Mfr Part #	Quantity Available	Price	Series	Package	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
ESMIT-4180/C AUDIO XFMR SMD Sumida America Components Inc.	24,471 In Stock	1 : £1.20000 Cut Tape (CT) 500 : £0.88894 Tape & Reel (TR)	ESMIT	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	-	-	-	250mOhm	250mOhm	-	-	-	3750Vrms	-	-	-	-40°C ~ 125°C	-	Surface Mount	0.280" L x 0.205" W (7.10mm x 5.20mm)	0.138" (3.50mm)	Gull Wing
TY-145P AUDIO XFMR 600CT / 600CT TH Triad Magnetics	4,375 In Stock	1 : £4.06000 Bulk	TY	Bulk	Active	1:1	600CT	600CT	44Ohm	58Ohm	Data/Voice Coupling	200Hz ~ 15kHz	±2dB	1500V	1.5dB	26dB	100mW	-20°C ~ 85°C	-	Through Hole	0.812" L x 0.700" W (20.62mm x 17.78mm)	0.740" (18.80mm)	PC Pin
TY-141P AUDIO XFMR 10KCT / 10KCT TH Triad Magnetics	3,450 In Stock	1 : £4.06000 Bulk	TY	Bulk	Active	1:1	10kCT	10kCT	820Ohm	1.07kOhm	Data/Voice Coupling	200Hz ~ 15kHz	±2dB	1500V	1.5dB	26dB	100mW	-20°C ~ 85°C	-	Through Hole	0.812" L x 0.700" W (20.62mm x 17.78mm)	0.740" (18.80mm)	PC Pin
SP-70 AUDIO XFMR 600 / 600 TH Triad Magnetics	2,516 In Stock 10,167 Factory	1 : £13.34000 Bulk	Red-Spec	Bulk	Active	1:1	600	600	72Ohm	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
VTX-102-3001 AUDIO XFMR ENCAP LOW IMP Vigortronix	383 Marketplace	1 : £14.87000 Bulk	VTX-102	Bulk	Active	1:01	600	600	30Ohm	30Ohm	General Purpose	20Hz ~ 30kHz	-	1500Vrms	-	-	-	-	-	Through Hole	1.280" L x 1.063" W (32.50mm x 27.00mm)	0.591" (15.00mm)	PC Pin
TTC-5023 AUDIO XFMR 600 / 600 SMD Tamura	0 In Stock Check Lead Time	1 : £3.14000 Cut Tape (CT) 4,000 : £2.16123 Tape & Reel (TR)	TTC	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	1:1	600	600	115Ohm	115Ohm	Data/Voice Coupling	200Hz ~ 4kHz	±0.25dB	3000VRMS @ 1 Minute	2dB Max @ 2kHz	14dB Min @ 200Hz ~ 4kHz	-	-20°C ~ 85°C	UL60950, EN60950	Surface Mount	0.378" L x 0.492" W (9.60mm x 12.50mm)	0.299" (7.60mm)	Flat Lead

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Like most other transformer products, audio transformers consist of two or more magnetically coupled coils of wire, usually wound around a magnetic core. They are distinguished from other transformer types by being adapted and characterized for use at frequencies across all or a significant portion of the human audible range spanning roughly 20 Hz to 20 kHz, and are used for isolation and transformation of information in analog format, as contrasted with transformers designed for transmission of information encoded using a digital signaling protocol. Examples include output transformers for vacuum tube amplifiers and voice coupling transformers for traditional telecom applications.