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0755-82798135Current Sense Transformers
Current Sense Transformers
Current Sense Transformers are magnetic components used to detect, monitor and measure current in electronic and electrical systems. They provide isolation between the primary current path and sensing circuitry, making them suitable for power monitoring, overload detection, feedback control and protection functions. They are widely used in power supplies, motor drives, industrial control equipment, energy meters, inverters, battery systems, communication equipment and embedded applications.
This category includes current transformers, current sensing transformers, AC current sense transformers, PCB current transformers, split-core current transformers and related magnetic sensing components. These products are commonly selected based on current range, turns ratio, frequency range, isolation voltage, accuracy, burden resistance, mounting type, package style and application requirements.
TomatoElec supplies original Current Sense Transformers from recognized manufacturers such as Pulse Electronics, Bourns, Würth Elektronik, TDK, Murata, Triad Magnetics, Coilcraft, Hammond Manufacturing and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.
| Photo | Mfr. Part # | Availability | Price | Quantity | Datasheet | Series | Packaging | Product Status | Frequency Range | Type | Current Rating (Amps) | Inductance | ET (Volt-Time) | Turns Ratio - Primary:Secondary | Current Ratio | DC Resistance (DCR) | Ratings | Mounting Type | Size / Dimension | Height - Seated (Max) | Termination Style |
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AS-104CURR SENSE XFMR 1:500 15A T/H |
0 | - |
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Datasheet |
AS | Tray | Active | 20kHz ~ 200kHz | Non-Invasive (Solid Core) | 15 A | 700 mH | 1500VµS | 1:500 | - | 25Ohm Secondary | - | Through Hole | 0.677" L x 0.375" W (17.20mm x 9.53mm) | 0.803" (20.40mm) | PC Pin |
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SCS-4-6-150T-TRSMD CURRENT TRANSFORMER 2.993MH- |
0 | - |
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Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 9 A | 2.993 mH | - | 150:1 | - | 1.5mOhm Primary, 22.3Ohm Secondary Max | - | Surface Mount | 0.283" L x 0.205" W (7.20mm x 5.20mm) | 0.110" (2.80mm) | J Lead |
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SCS-4-6-50T-TRSMD CURRENT TRANSFORMER 0.333MH- |
0 | - |
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Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 9 A | 333 µH | - | 50:1 | - | 1.5mOhm Primary, 2.76Ohm Secondary Max | - | Surface Mount | 0.283" L x 0.205" W (7.20mm x 5.20mm) | 0.110" (2.80mm) | J Lead |
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SCS-4-6-100T-TRSMD CURRENT TRANSFORMER 1.330MH- |
0 | - |
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Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 9 A | 1.33 mH | - | 100:1 | - | 1.5mOhm Primary, 10.68Ohm Secondary Max | - | Surface Mount | 0.283" L x 0.205" W (7.20mm x 5.20mm) | 0.110" (2.80mm) | J Lead |
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SCS-4-6-20T-TRSMD CURRENT TRANSFORMER 0.053MH- |
0 | - |
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Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 9 A | 53 µH | - | 20:1 | - | 1.5mOhm Primary, 420mOhm Secondary Max | - | Surface Mount | 0.283" L x 0.205" W (7.20mm x 5.20mm) | 0.110" (2.80mm) | J Lead |
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SCS-4-6-70T-TRSMD CURRENT TRANSFORMER 0.652MH- |
0 | - |
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Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 9 A | 652 µH | - | 70:1 | - | 1.5mOhm Primary, 5.04Ohm Secondary Max | - | Surface Mount | 0.283" L x 0.205" W (7.20mm x 5.20mm) | 0.110" (2.80mm) | J Lead |
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55100C-RCURR SENSE XFMR 1:1:100 15A SMD |
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Datasheet |
5500 | Tape & Reel (TR) | Obsolete | 50kHz ~ 500kHz | Invasive | 15 A | 14.8 mH | - | 1:1:100 | - | 2.3mOhm Primary, 850mOhm Secondary | - | Surface Mount | 0.575" L x 0.496" W (14.60mm x 12.60mm) | 0.280" (7.10mm) | - |
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750316796CURR SENSE XFMR 1:120 40A SMD |
1 | - |
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Datasheet |
- | Tape & Reel (TR) | Obsolete | 50kHz ~ 500kHz | Invasive | 40 A | 22.4 mH | - | 1:200 | - | 280mOhm | - | Surface Mount | 0.570" L x 0.795" W (14.48mm x 20.20mm) | 0.413" (10.50mm) | Gull Wing |
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T60404E4658X043CURR SENSE XFMR 1500:1 6A TH |
0 | - |
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- | Box | Active | 50Hz | Non-Invasive (Solid Core) | 6 A | 35 H | - | 1:1500 | 1500:1 | 45.5Ohm | - | Through Hole | 0.661" L x 0.354" W (16.80mm x 9.00mm) | 0.748" (19.00mm) | PC Pin |
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PE-68383NLCURR SENSE XFMR 1:1:200 SMD |
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Datasheet |
PE-68XXXNL | Tube | Active | 50kHz ~ 500kHz | Invasive | - | 59.2 mH | - | 1:1:200 | - | 1.15mOhm Primary, 3.9Ohm Secondary | - | Surface Mount | 0.495" L x 0.490" W (12.57mm x 12.45mm) | 0.280" (7.11mm) | - |
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T60404B4658X0294658X029 |
0 | - |
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- | Box | Active | - | Non-Invasive (Solid Core) | 350 mA | 24.4 mH | - | 1:100 | 100:1 | 750mOhm | - | Through Hole | 0.661" L x 0.354" W (16.80mm x 9.00mm) | 0.748" (19.00mm) | PC Pin |
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T60404B4658X0404658X040 |
0 | - |
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- | Box | Active | 100kHz | Non-Invasive (Solid Core) | 350 mA | 24.4 mH | 200VµS | 100:1 | 100:1 | 750mOhm | - | Through Hole | 0.661" L x 0.354" W (16.80mm x 9.00mm) | 0.748" (19.00mm) | PC Pin |
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749252060CURR SENSE XFMR 1:60 7A SMD |
0 | - |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 295 µH | 27VµS | 1:60 | - | 3mOhm Primary, 3.6Ohm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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749252150CURR SENSE XFMR 1:150 7A SMD |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 1.8 mH | 67.5VµS | 1:150 | - | 3mOhm Primary, 21Ohm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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749252040CURR SENSE XFMR 1:40 7A SMD |
0 | - |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 132 µH | 18VµS | 1:40 | - | 3mOhm Primary, 1.6Ohm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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749252125CURR SENSE XFMR 1:125 7A SMD |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 1.28 mH | 56.2VµS | 1:125 | - | 3mOhm Primary, 13Ohm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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749252050CURR SENSE XFMR 1:50 7A SMD |
0 | - |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 205 µH | 22.5VµS | 1:50 | - | 3mOhm Primary, 2.5Ohm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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749252020CURR SENSE XFMR 1:20 7A SMD |
0 | - |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 33 µH | 9VµS | 1:20 | - | 3mOhm Primary, 350mOhm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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749252030CURR SENSE XFMR 1:30 7A SMD |
0 | - |
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Datasheet |
WE-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 7 A | 74 µH | 13.5VµS | 1:30 | - | 3mOhm Primary, 800mOhm Secondary | - | Surface Mount | 0.185" L x 0.183" W (4.70mm x 4.65mm) | 0.140" (3.55mm) | Gull Wing |
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AS-101CURR SENSE XFMR 15A 1:100 VRT |
0 | - |
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Datasheet |
AS | Bulk | Active | - | - | - | - | - | - | - | - | - | - | 0.677" L x 0.375" W (17.20mm x 9.53mm) | 0.803" (20.40mm) | - |

