What are Current Sense Transformers ?
Current Sense Transformers are devices designed to measure the current flowing through a conductor while providing electrical isolation. They are commonly used in applications like production electronics assembly and maintenance. Important specifications include Current Rating (Amps), which determines the maximum current the transformer can handle; Current Ratio, which affects the output signal relative to the input current; and DC Resistance (DCR), which impacts efficiency and heat generation. Ensuring compatibility with existing designs and validating lifecycle status are crucial for procurement teams.
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| Part & Mfr | Current Rating (Amps) | Current Ratio | DC Resistance (DCR) | ET (Volt | Frequency Range | Height | Inductance | Mounting Type | Ratings | Size | Termination Style | Turns Ratio | Type | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Pulse Electronics
|
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20 A | - | 0.75mOhm Primary, 6.5Ohm Secondary | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 3 mH | Surface Mount | AEC-Q200 | 0.284" L x 0.330" W (7.21mm x 8.38mm) | Gull Wing | 1:125 | Invasive | |
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Pulse Electronics
|
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30 A | - | 0.35mOhm Primary, 5.7Ohm Secondary | - | 20kHz | 0.283" (7.20mm) | 5.63 mH | Surface Mount | - | 0.504" L x 0.382" W (12.80mm x 9.70mm) | Gull Wing | 150:1 | Invasive | |
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Eaton - Electronics Division
|
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10 A | - | 700mOhm Primary, 1.85Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 500 µH | Surface Mount | - | 0.330" L x 0.315" W (8.38mm x 8.00mm) | Gull Wing | 50:1 | Invasive | |
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Eaton - Electronics Division
|
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10 A | - | 700mOhm Primary, 5.5Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 2 mH | Surface Mount | - | 0.330" L x 0.315" W (8.38mm x 8.00mm) | Gull Wing | 100:1 | Invasive | |
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Pulse Electronics
|
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30 A | - | 0.5mOhm Primary, 2.1Ohm Secondary Max | - | 20kHz | 0.567" (14.40mm) | 3 mH | Surface Mount | - | 0.504" L x 0.480" W (12.80mm x 12.20mm) | Gull Wing | 1:7 | Invasive | |
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Talema
|
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40 A | 1000:1 | 49.3Ohm | - | 50/60Hz | 1.374" (34.90mm) | - | Through Hole | - | 1.374" L x 0.563" W (34.90mm x 14.30mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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Pulse Electronics
|
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- | - | 6mOhm Primary, 870mOhm Secondary | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 180 µH | Surface Mount | - | 0.284" L x 0.330" W (7.21mm x 8.38mm) | Gull Wing | 1:30 | Invasive | |
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Pulse Electronics
|
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30 A | - | 0.5mOhm Primary, 4Ohm Secondary Max | - | 20kHz | 0.567" (14.40mm) | 11 mH | Surface Mount | - | 0.504" L x 0.480" W (12.80mm x 12.20mm) | Gull Wing | 1:125 | Invasive | |
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Pulse Electronics
|
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30 A | - | 0.5mOhm Primary, 1.5Ohm Secondary Max | - | 20kHz | 0.567" (14.40mm) | 1.7 mH | Surface Mount | - | 0.504" L x 0.480" W (12.80mm x 12.20mm) | Gull Wing | 1:50 | Invasive | |
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Pulse Electronics
|
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- | - | 6mOhm Primary, 4.75Ohm Secondary | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 980 µH | Surface Mount | - | 0.284" L x 0.330" W (7.21mm x 8.38mm) | Gull Wing | 1:70 | Invasive | |
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Eaton - Electronics Division
|
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10 A | - | 700mOhm Primary, 1.85Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 500 µH | Surface Mount | AEC-Q200 | 0.330" L x 0.315" W (8.38mm x 8.00mm) | Gull Wing | 50:1 | Invasive | |
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Eaton - Electronics Division
|
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10 A | - | 700mOhm Primary, 5.5Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 2 mH | Surface Mount | AEC-Q200 | 0.330" L x 0.315" W (8.38mm x 8.00mm) | Gull Wing | 100:1 | Invasive | |
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TDK Corporation
|
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- | - | 0.8mOhm Primary, 870mOhm Secondary | - | 50kHz ~ 1MHz | 0.200" (5.08mm) | 180 µH | Surface Mount | - | 0.280" L x 0.320" W (7.11mm x 8.13mm) | Gull Wing | 1:30 | Invasive | |
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TDK Corporation
|
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- | - | 0.8mOhm Primary, 1.98Ohm Secondary | - | 50kHz ~ 1MHz | 0.200" (5.08mm) | 720 µH | Surface Mount | - | 0.280" L x 0.320" W (7.11mm x 8.13mm) | Gull Wing | 1:60 | Invasive | |
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Eaton - Electronics Division
|
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9 A | - | 1.5mOhm Primary, 5.04Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.118" (3.00mm) | 652 µH | Surface Mount | - | 0.283" L x 0.205" W (7.20mm x 5.20mm) | J Lead | 70:1 | Invasive | |
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Hammond Manufacturing
|
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- | - | - | - | 50/60Hz | 1.250" (31.75mm) | - | Chassis Mount | - | 2.063" L x 1.100" W (52.40mm x 27.94mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
|
Eaton - Electronics Division
|
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9 A | - | 1.5mOhm Primary, 10.68Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.118" (3.00mm) | 1.33 mH | Surface Mount | - | 0.283" L x 0.205" W (7.20mm x 5.20mm) | J Lead | 100:1 | Invasive | |
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Eaton - Electronics Division
|
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9 A | - | 1.5mOhm Primary, 5.04Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.118" (3.00mm) | 652 µH | Surface Mount | AEC-Q200 | 0.283" L x 0.205" W (7.20mm x 5.20mm) | J Lead | 70:1 | Invasive | |
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Eaton - Electronics Division
|
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9 A | - | 1.5mOhm Primary, 10.68Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.118" (3.00mm) | 1.33 mH | Surface Mount | AEC-Q200 | 0.283" L x 0.205" W (7.20mm x 5.20mm) | J Lead | 100:1 | Invasive | |
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Würth Elektronik
|
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40 A | - | 0.28mOhm Primary, 1.9Ohm Secondary | 372Vµs | 1MHz | 0.413" (10.50mm) | 12.6 mH | Surface Mount | AEC-Q200 | 0.570" L x 0.524" W (14.48mm x 13.30mm) | Gull Wing | 1:150 | Invasive | |
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Würth Elektronik
|
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40 A | - | 0.28mOhm Primary, 305mOhm Secondary | 148Vµs | 1MHz | 0.413" (10.50mm) | 2 mH | Surface Mount | AEC-Q200 | 0.570" L x 0.524" W (14.48mm x 13.30mm) | Gull Wing | 1:60 | Invasive | |
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Pulse Electronics
|
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36 A | - | 700mOhm Primary, 1.7mOhm Secondary | - | 50kHz ~ 500kHz | 0.750" (19.05mm) | 5 mH | Through Hole | - | 0.810" L x 0.580" W (20.57mm x 14.73mm) | PC Pin | 50:1:1 | Invasive | |
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Würth Elektronik
|
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40 A | - | 0.28mOhm Primary, 33mOhm Secondary | 49Vµs | 1MHz | 0.413" (10.50mm) | 224 µH | Surface Mount | AEC-Q200 | 0.570" L x 0.524" W (14.48mm x 13.30mm) | Gull Wing | 1:20 | Invasive | |
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Eaton - Electronics Division
|
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7 A | - | 3mOhm Primary, 9.5Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.140" (3.55mm) | 820 µH | Surface Mount | - | 0.189" L x 0.144" W (4.80mm x 3.65mm) | J Lead | 100:1 | Invasive | |
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Eaton - Electronics Division
|
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7 A | - | 3mOhm Primary, 4.6Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.140" (3.55mm) | 400 µH | Surface Mount | - | 0.189" L x 0.144" W (4.80mm x 3.65mm) | J Lead | 70:1 | Invasive | |
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Eaton - Electronics Division
|
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7 A | - | 3mOhm Primary, 2.5Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.140" (3.55mm) | 205 µH | Surface Mount | - | 0.189" L x 0.144" W (4.80mm x 3.65mm) | J Lead | 50:1 | Invasive | |
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Triad Magnetics
|
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10 A | 1000:1 | 40Ohm | - | 50/60Hz | 0.976" (24.80mm) | - | Through Hole | - | 0.925" L x 0.472" W (23.50mm x 12.00mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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Eaton - Electronics Division
|
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7 A | - | 3Ohm Primary, 4.6Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.140" (3.55mm) | 400 µH | Surface Mount | AEC-Q200 | 0.189" L x 0.144" W (4.80mm x 3.65mm) | J Lead | 70:1 | Invasive | |
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Eaton - Electronics Division
|
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Price on request
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7 A | - | 3Ohm Primary, 2.5Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.140" (3.55mm) | 205 µH | Surface Mount | AEC-Q200 | 0.189" L x 0.144" W (4.80mm x 3.65mm) | J Lead | 50:1 | Invasive | |
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Eaton - Electronics Division
|
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7 A | - | 3Ohm Primary, 9.5Ohm Secondary Max | - | 50kHz ~ 1MHz | 0.140" (3.55mm) | 820 µH | Surface Mount | AEC-Q200 | 0.189" L x 0.144" W (4.80mm x 3.65mm) | J Lead | 100:1 | Invasive | |
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TDK Corporation
|
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- | - | 0.5mOhm Primary, 2.1Ohm Secondary | - | 50kHz ~ 250kHz | 0.567" (14.40mm) | 3 mH | Surface Mount | - | 0.504" L x 0.535" W (12.80mm x 13.60mm) | Gull Wing | 1:70 | Invasive | |
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Talema
|
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150 A | 1000:1 | 11Ohm | - | 50/60Hz | 2.189" (55.60mm) | - | Through Hole | - | 2.189" L x 0.811" W (55.60mm x 20.60mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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Pulse Electronics
|
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10 A | - | 3mOhm Primary, 2.1Ohm Secondary Max | - | - | 0.346" (8.80mm) | 10 mH | Surface Mount | - | - | Gull Wing | 1:100 | Invasive | |
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Murata
|
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10 A | 50:1 | - | - | 20kHz ~ 200kHz | 0.795" (20.16mm) | - | Through Hole | - | 0.661" L x 0.350" W (16.79mm x 8.89mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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TDK Corporation
|
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- | - | 1.9mOhm Primary, 2.1Ohm Secondary | - | 50kHz ~ 250kHz | 0.433" (11.00mm) | 1.7 mH | Surface Mount | - | 0.417" L x 0.480" W (10.60mm x 12.20mm) | Gull Wing | 1:50 | Invasive | |
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Talema
|
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5 A | 500:1 | - | - | 50Hz ~ 60Hz | 0.803" (20.40mm) | - | Through Hole | - | 0.677" L x 0.375" W (17.20mm x 9.53mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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CR Magnetics Inc.
|
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50 A | 1000:1 | 32Ohm | - | 20Hz ~ 1kHz | 1.102" (28.00mm) | - | Through Hole | - | 1.024" L x 0.670" W (26.00mm x 17.00mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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CR Magnetics Inc.
|
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100 A | 2500:1 | 57Ohm | - | 20Hz ~ 1kHz | 1.535" (39.00mm) | - | Through Hole | - | 1.476" L x 0.551" W (37.50mm x 14.00mm) | PC Pin | - | Non-Invasive (Solid Core) | |
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Pulse Electronics
|
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20 A | - | 0.75mOhm Primary, 550mOhm Secondary | - | 50kHz ~ 1MHz | 0.217" (5.50mm) | 80 µH | Surface Mount | AEC-Q200 | 0.284" L x 0.330" W (7.21mm x 8.38mm) | Gull Wing | 1:20 | Invasive | |
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TDK Corporation
|
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Hammond Manufacturing
|
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5 A | 150:5 | - | - | - | 3.250" (82.55mm) | - | Chassis Mount | - | 3.750" L x 1.750" W (95.25mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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LEM USA Inc.
|
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10 A | - | - | - | 50Hz ~ 60Hz | 1.791" (45.50mm) | - | - | - | - | Wire Leads | - | Non-Invasive (Split Core) | |
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Hammond Manufacturing
|
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5 A | 200:5 | - | - | - | 4.250" (107.95mm) | - | Chassis Mount | - | 4.750" L x 1.750" W (120.65mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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Hammond Manufacturing
|
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5 A | 250:5 | - | - | - | 4.250" (107.95mm) | - | Chassis Mount | - | 4.750" L x 1.750" W (120.65mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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Hammond Manufacturing
|
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5 A | 300:5 | - | - | - | 4.250" (107.95mm) | - | Chassis Mount | - | 4.750" L x 1.750" W (120.65mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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Hammond Manufacturing
|
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5 A | 500:5 | - | - | - | 4.250" (107.95mm) | - | Chassis Mount | - | 4.750" L x 1.750" W (120.65mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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Hammond Manufacturing
|
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5 A | 600:5 | - | - | - | 5.250" (133.35mm) | - | Chassis Mount | - | 6.000" L x 1.750" W (152.40mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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Hammond Manufacturing
|
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5 A | 1000:5 | - | - | - | 6.250" (158.75mm) | - | Chassis Mount | - | 7.000" L x 1.750" W (177.80mm x 44.45mm) | Wire Leads | - | Non-Invasive (Solid Core) | |
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Würth Elektronik
|
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- | - | 6mOhm Primary, 6.5Ohm Secondary | 68VµS | - | 0.210" (5.33mm) | 3 mH | Surface Mount | - | 0.303" L x 0.272" W (7.70mm x 6.90mm) | Gull Wing | 1:125 | Invasive | |
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Triad Magnetics
|
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70 A | 300:1 | 12.4Ohm Max | 6000VµS | 20kHz ~ 200kHz | 1.225" (31.12mm) | 130 mH | Through Hole | - | 1.075" L x 0.400" W (27.31mm x 10.16mm) | PC Pin | - | Non-Invasive (Solid Core) |
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