What are Audio Transformers ?
Audio Transformers are specialized components designed to transfer audio signals between different circuits while minimizing signal loss and distortion. They are commonly used in applications such as production electronics assembly and maintenance. Important specifications for selection include Frequency Range, which affects the audio quality; Impedance, which ensures compatibility with other components; and DC Resistance (DCR), which influences power efficiency. Validating these specifications is crucial for ensuring optimal performance in audio applications.
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| Part & Mfr | DC Resistance (DCR) | Frequency Range | Frequency Response | Height | Impedance | Insertion Loss | Mounting Type | Power Level | Size | Termination Style | Transformer Type | Turns Ratio | Voltage | |||
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Hammond Manufacturing
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2.4Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 48CT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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148Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 2k | - | Chassis Mount | 135mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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26Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 500CT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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56Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 1kCT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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97Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 2kCT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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27Ohm | 150Hz ~ 15kHz | ±1dB | 0.690" (17.53mm) | 500CT | - | Chassis Mount | 150mW | 1.000" L x 0.690" W (25.40mm x 17.53mm) | Wire Leads | Economical Open Type | - | - | |
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1.18kOhm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 20k | - | Chassis Mount | 135mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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3.6kOhm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 200k | - | Chassis Mount | 10mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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340Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 4k | - | Chassis Mount | 135mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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26Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 500CT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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220Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 4kCT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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850Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 15k | - | Chassis Mount | 135mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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1.18kOhm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 20k | - | Chassis Mount | 135mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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28Ohm | 150Hz ~ 15kHz | ±1dB | 0.690" (17.53mm) | 500CT | - | Chassis Mount | 150mW | 1.000" L x 0.690" W (25.40mm x 17.53mm) | Wire Leads | Economical Open Type | - | - | |
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4.4Ohm | 150Hz ~ 15kHz | ±1dB | 0.810" (20.57mm) | 100CT | - | Chassis Mount | 700mW | 1.630" L x 0.880" W (41.40mm x 22.35mm) | Wire Leads | Economical Open Type | - | - | |
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27Ohm | 150Hz ~ 15kHz | ±1dB | 0.690" (17.53mm) | 500CT | - | Chassis Mount | 150mW | 1.000" L x 0.690" W (25.40mm x 17.53mm) | Wire Leads | Economical Open Type | - | - | |
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52Ohm | 200Hz ~ 15kHz | ±1dB | 0.820" (20.83mm) | 450 | 0.5dB | Through Hole | 200mW | 1.060" L x 0.820" W (26.92mm x 20.83mm) | PC Pin | Economical Open Type | - | - | |
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45Ohm | 200Hz ~ 15kHz | ±1dB | 0.690" (17.53mm) | 600, 150/150 | 0.5dB | Through Hole | 300mW | 0.820" L x 0.680" W (20.83mm x 17.27mm) | PC Pin | Economical Open Type | - | - | |
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19Ohm | 200Hz ~ 15kHz | ±1dB | 0.820" (20.83mm) | 200CT | 0.5dB | Through Hole | 1000mW | 1.060" L x 0.820" W (26.92mm x 20.83mm) | PC Pin | Economical Open Type | - | - | |
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53Ohm | 200Hz ~ 15kHz | ±1dB | 0.820" (20.83mm) | 600CT | 0.5dB | Through Hole | 1000mW | 1.060" L x 0.820" W (26.92mm x 20.83mm) | PC Pin | Economical Open Type | - | - | |
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155Ohm | 200Hz ~ 15kHz | ±1dB | 0.820" (20.83mm) | 1k | 0.5dB | Through Hole | 200mW | 1.060" L x 0.820" W (26.92mm x 20.83mm) | PC Pin | Economical Open Type | - | - | |
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2.23kOhm | 200Hz ~ 15kHz | ±1dB | 0.690" (17.53mm) | 20k | 0.5dB | Through Hole | 50mW | 0.820" L x 0.680" W (20.83mm x 17.27mm) | PC Pin | Economical Open Type | - | - | |
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- | 100Hz ~ 9kHz | 1dB | 1.690" (42.93mm) | 8 | 2dB | Chassis Mount | 4W | 2.810" L x 1.500" W (71.37mm x 38.10mm) | Solder Lug | Sound Distribution | - | - | |
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- | 100Hz ~ 9kHz | 1dB | 1.380" (35.05mm) | 8 | 2dB | Chassis Mount | 2W | 2.380" L x 1.380" W (60.45mm x 35.05mm) | Solder Lug | Sound Distribution | - | - | |
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350Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.770" (19.56mm) | 10kCT | - | Through Hole | 500mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 55.8:1 | 100VRMS | |
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140Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.770" (19.56mm) | 1.5kCT | - | Through Hole | 500mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 1.58:1 | 100VRMS | |
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370Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.770" (19.56mm) | 10kCT | - | Through Hole | 500mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 4.08:1 | 100VRMS | |
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54Ohm | 300Hz ~ 50kHz | ±2.5dB | 0.770" (19.56mm) | 600CT | - | Through Hole | 500mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 2:1 | 100VRMS | |
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50Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.770" (19.56mm) | 600CT | - | Through Hole | 150mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 1:1 | 100VRMS | |
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54Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.770" (19.56mm) | 600CT | - | Through Hole | 500mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 1.55:1 | 100VRMS | |
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438Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.770" (19.56mm) | 10kCT | - | Through Hole | 150mW | 1.030" L x 0.770" W (26.16mm x 19.56mm) | PC Pin | Miniature Epoxy Potted | 2.58:1 | 500Vrms | |
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- | 100Hz ~ 9kHz | 1dB | 2.000" (50.80mm) | 8 | 2dB | Chassis Mount | 8W | 3.250" L x 1.750" W (82.55mm x 44.45mm) | Solder Lug | Sound Distribution | - | - | |
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- | 100Hz ~ 9kHz | 1dB | 1.690" (42.93mm) | 3.2 | 2dB | Chassis Mount | 4W | 2.810" L x 1.500" W (71.37mm x 38.10mm) | Solder Lug | Sound Distribution | - | - | |
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1.4kOhm | 300Hz ~ 50kHz | ±1.5dB | 0.630" (16.00mm) | 25kCT | - | Through Hole | 150mW | 0.630" L x 0.586" W (16.00mm x 14.88mm) | PC Pin | Miniature Epoxy Potted | 6.45:1 | 100VRMS | |
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65Ohm | 150Hz | -1dB | 0.950" (24.13mm) | 600CT | 1dB | Through Hole | 500mW | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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6.6Ohm | 60Hz | -1dB | 0.750" (19.05mm) | 150 | 1dB | Through Hole | 5mW | 0.860" L x 0.710" W (21.84mm x 18.03mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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27Ohm | 200Hz | -1dB | 0.750" (19.05mm) | 500CT | 1dB | Through Hole | 500mW | 0.860" L x 0.710" W (21.84mm x 18.03mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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700Ohm | 215Hz | -1dB | 0.950" (24.13mm) | 10k | 1dB | Through Hole | 150mW | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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65Ohm | 150Hz | -1dB | 0.950" (24.13mm) | 600CT | 1dB | Through Hole | 500mW | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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- | 100Hz ~ 9kHz | 1dB | 2.310" (58.67mm) | 8 | 2dB | Chassis Mount | 16W | 3.690" L x 2.000" W (93.73mm x 50.80mm) | Solder Lug | Sound Distribution | - | - | |
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- | 100Hz ~ 9kHz | 1dB | 2.310" (58.67mm) | 16 | 2dB | Chassis Mount | 16W | 3.690" L x 2.000" W (93.73mm x 50.80mm) | Solder Lug | Sound Distribution | - | - | |
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40Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.920" (23.37mm) | 600CT | - | Through Hole | 2W | 1.315" L x 0.930" W (33.40mm x 23.62mm) | PC Pin | Miniature Epoxy Potted | 1.55:1 | 100VRMS | |
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64Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.920" (23.37mm) | 1kCT | - | Through Hole | 2W | 1.315" L x 0.930" W (33.40mm x 23.62mm) | PC Pin | Miniature Epoxy Potted | 1.29:1 | 100VRMS | |
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26Ohm | 170Hz | -1dB | 0.950" (24.13mm) | 500CT | 1dB | Through Hole | 1.5W | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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2.4Ohm | 170Hz | -1dB | 0.950" (24.13mm) | 48CT | 1dB | Through Hole | 1.5W | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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11Ohm | 170Hz | -1dB | 0.950" (24.13mm) | 250CT | 1dB | Through Hole | 1.5W | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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4.4Ohm | 170Hz | -1dB | 0.950" (24.13mm) | 100CT | 1dB | Through Hole | 1.5W | 1.080" L x 0.880" W (27.43mm x 22.35mm) | PC Pin | Miniature Epoxy Potted | - | 200V | |
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36.65Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.920" (23.37mm) | 600CT | - | Through Hole | 2W | 1.315" L x 0.930" W (33.40mm x 23.62mm) | PC Pin | Miniature Epoxy Potted | 2:1 | 100VRMS | |
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- | 100Hz ~ 9kHz | 1dB | 2.310" (58.67mm) | 3.2 | 2dB | Chassis Mount | 16W | 3.690" L x 2.000" W (93.73mm x 50.80mm) | Solder Lug | Sound Distribution | - | - | |
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300Ohm | 300Hz ~ 50kHz | ±1.5dB | 0.920" (23.37mm) | 10kCT | - | Through Hole | 2W | 1.315" L x 0.930" W (33.40mm x 23.62mm) | PC Pin | Miniature Epoxy Potted | 55.3:1 | 100VRMS |
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