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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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FIS111NLCURR SENSE XFMR 1:100 15A T/H |
908 | - |
|
Datasheet |
FIS | Tube | Active | 200kHz Max | Non-Invasive (Solid Core) | - | 22 mH | 350VµS | 1:100 | - | 1.3Ohm Max | - | Through Hole | 0.677" L x 0.375" W (17.20mm x 9.53mm) | 0.803" (20.40mm) | PC Pin |
|
|
FIS125NLCURR SENSE XFMR 1:200 25A T/H |
10,446 | - |
|
Datasheet |
FIS 1X5 | Tube | Active | 500kHz Max | Invasive | - | 76 mH | 700VµS | 1:200 | - | 4.5Ohm Max | - | Through Hole | 0.693" L x 0.591" W (17.60mm x 15.00mm) | 0.492" (12.50mm) | PC Pin |
|
CSE186LCURR SENSE XFMR 1:166 10A T/H |
2,522 | - |
|
Datasheet |
- | Bulk | Active | 50Hz ~ 400Hz | Invasive | 10 A | - | - | 1:166 | - | 2mOhm Primary, 23Ohm Secondary | - | Through Hole | 0.846" L x 0.945" W (21.50mm x 24.00mm) | 0.709" (18.00mm) | PC Pin |
|
CST25-0100CURR SENSE XFMR 1:100 25A TH |
282 | - |
|
Datasheet |
CST | Tube | Active | 50kHz ~ 500kHz | Invasive | 25 A | 18 mH | 350VµS | 1:100 | - | 2Ohm | - | Through Hole | 0.669" L x 0.591" W (17.00mm x 15.00mm) | 0.472" (12.00mm) | PC Pin |
|
|
FIS121NLCURR SENSE XFMR 1:200 15A T/H |
1,110 | - |
|
Datasheet |
FIS | Tube | Active | 200kHz Max | Non-Invasive (Solid Core) | - | 94.5 mH | 700VµS | 1:200 | - | 4.5Ohm Max | - | Through Hole | 0.677" L x 0.375" W (17.20mm x 9.53mm) | 0.803" (20.40mm) | PC Pin |
|
P8208NLCURR SENSE XFMR 1:100 SMD |
1,500 | - |
|
Datasheet |
P820X | Tray | Active | 50kHz ~ 1MHz | Invasive | - | 2 mH | - | 1:100 | - | 6mOhm Primary, 5.5Ohm Secondary | - | Surface Mount | 0.284" L x 0.330" W (7.21mm x 8.38mm) | 0.217" (5.50mm) | Gull Wing |
|
PH9505.100NLTCURR SENSE XFMR 1:100 30A SMD |
2,886 | - |
|
Datasheet |
PH9505.XXXNL | Tape & Reel (TR) | Active | 20kHz | Invasive | 30 A | 7 mH | - | 1:100 | - | 0.5mOhm Primary, 3.1Ohm Secondary Max | - | Surface Mount | 0.504" L x 0.480" W (12.80mm x 12.20mm) | 0.567" (14.40mm) | Gull Wing |
|
P8208NLTCURR SENSE XFMR 1:100 SMD |
2,167 | - |
|
Datasheet |
P820X | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | - | 2 mH | - | 1:100 | - | 6mOhm Primary, 5.5Ohm Secondary | - | Surface Mount | 0.284" L x 0.330" W (7.21mm x 8.38mm) | 0.217" (5.50mm) | Gull Wing |
|
P8207NLTCURR SENSE XFMR 1:70 SMD |
544 | - |
|
Datasheet |
P820X | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | - | 980 µH | - | 1:70 | - | 6mOhm Primary, 4.75Ohm Secondary | - | Surface Mount | 0.284" L x 0.330" W (7.21mm x 8.38mm) | 0.217" (5.50mm) | Gull Wing |
|
|
FIS101NLCURR SENSE XFMR 1:50 15A T/H |
978 | - |
|
Datasheet |
FIS | Tube | Active | 200kHz Max | Non-Invasive (Solid Core) | 15 A | 5 mH | 175VµS | 1:50 | - | 650mOhm Secondary Max | - | Through Hole | 0.677" L x 0.375" W (17.20mm x 9.53mm) | 0.803" (20.40mm) | PC Pin |
|
|
FIS105NLCURR SENSE XFMR 1:50 25A T/H |
1,080 | - |
|
Datasheet |
FIS 1X5 | Tube | Active | 500kHz Max | Invasive | - | 4.7 mH | 175VµS | 1:50 | - | 500mOhm Max | - | Through Hole | 0.693" L x 0.591" W (17.60mm x 15.00mm) | 0.492" (12.50mm) | PC Pin |
|
PE-51686NLCURR SENSE XFMR 20A T/H |
1,175 | - |
|
Datasheet |
THT | Tray | Active | 20kHz ~ 200kHz | Invasive | 20 A | 5 mH | - | - | 50:1 | 50Ohm Primary, 700mOhm Secondary | - | Through Hole | 0.670" L x 0.390" W (17.01mm x 9.90mm) | 0.800" (20.32mm) | PC Pin |
|
CSE184LCURR SENSE XFMR 1A T/H |
145 | - |
|
Datasheet |
- | Bulk | Active | 50Hz ~ 400Hz | Invasive | 1 A | - | - | - | - | 125mOhm Primary, 23Ohm Secondary | - | Through Hole | 0.846" L x 0.945" W (21.50mm x 24.00mm) | 0.709" (18.00mm) | PC Pin |
|
PB0025NLCURR SENSE XFMR 50:1 35A SMD |
967 | - |
|
Datasheet |
PB002XNL | Tray | Active | 50kHz ~ 500kHz | Invasive | 35 A | 1.4 mH | - | 50:1 | - | 0.42mOhm Primary, 700mOhm Secondary | - | Surface Mount | 0.591" L x 0.784" W (15.00mm x 19.91mm) | 0.394" (10.00mm) | Gull Wing |
|
B82801A1824A100CURR SENSE XFMR 1:100 SMD |
4,659 | - |
|
Datasheet |
B82801A | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | - | 820 µH | - | - | - | 2.5mOhm Primary, 8.7Ohm Secondary | - | Surface Mount | 0.185" L x 0.138" W (4.70mm x 3.50mm) | 0.138" (3.50mm) | J Lead |
|
B82801C2245A200CURR SENSE XFMR 1:200 SMD |
1,691 | - |
|
Datasheet |
B82801C | Tape & Reel (TR) | Active | 50kHz ~ 500kHz | Invasive | - | 22.4 mH | - | 1:200 | - | 0.28mOhm Primary, 2.9Ohm Secondary | - | Surface Mount | 0.560" L x 0.530" W (14.22mm x 13.46mm) | 0.394" (10.00mm) | Gull Wing |
|
PE-51687NLCURR SENSE XFMR 20A T/H |
1,038 | - |
|
Datasheet |
THT | Tray | Active | 20kHz ~ 200kHz | Invasive | 20 A | 20 mH | - | - | 100:1 | 100Ohm Primary, 1.4Ohm Secondary | - | Through Hole | 0.670" L x 0.390" W (17.01mm x 9.90mm) | 0.800" (20.32mm) | PC Pin |
|
|
PE-51719NLCURR SENSE XFMR 20A T/H |
548 | - |
|
Datasheet |
- | Tray | Active | 20kHz ~ 200kHz | Non-Invasive (Solid Core) | 20 A | 80 mH | - | - | 200CT:1 | - | - | Through Hole | 0.900" L x 0.700" W (22.86mm x 17.78mm) | 0.700" (17.78mm) | PC Pin |
|
PB0027NLTCURR SENSE XFMR 200:1 35A SMD |
1,312 | - |
|
Datasheet |
PB002XNL | Tape & Reel (TR) | Active | 50kHz ~ 500kHz | Invasive | 35 A | 22.4 mH | - | 200:1 | - | 0.42mOhm Primary, 2.9Ohm Secondary | - | Surface Mount | 0.591" L x 0.784" W (15.00mm x 19.91mm) | 0.394" (10.00mm) | Gull Wing |
|
PB0026NLTCURR SENSE XFMR 100:1 35A SMD |
137 | - |
|
Datasheet |
PB002XNL | Tape & Reel (TR) | Active | 50kHz ~ 500kHz | Invasive | 35 A | 5.6 mH | - | 100:1 | - | 0.42mOhm Primary, 1.4Ohm Secondary | - | Surface Mount | 0.591" L x 0.784" W (15.00mm x 19.91mm) | 0.394" (10.00mm) | Gull Wing |

