Current Sense Transformers

Manufacturer 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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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
AS-103

AS-103

CURR SENSE XFMR 1:300 T/H

Amgis, LLC

385 -
RFQ
AS-103

Datasheet

AS Bulk Active 20kHz ~ 200kHz Non-Invasive (Solid Core) - 250 mH 900VµS 1:300 - 10Ohm Max - Through Hole 0.677" L x 0.375" W (17.20mm x 9.53mm) 0.803" (20.40mm) PC Pin
PE-68210NLT

PE-68210NLT

CURR SENSE XFMR 1:1:50 SMD

Pulse Electronics

393 -
RFQ
PE-68210NLT

Datasheet

PE-68XXXNL Tape & Reel (TR) Active 50kHz ~ 500kHz Invasive - 3.8 mH - 1:1:50 - 1.15mOhm Primary, 380mOhm Secondary - Surface Mount 0.495" L x 0.490" W (12.57mm x 12.45mm) 0.280" (7.11mm) -
RL-11385

RL-11385

CURRENT SENSE XFMR 100:1 1.75MH

Renco Electronics, Inc.

1,000 -
RFQ

-

- Bulk Active - - - - - - - - - - - - -
B82801A1333A020

B82801A1333A020

CURR SENSE XFMR 1:20 SMD

EPCOS - TDK Electronics

509 -
RFQ
B82801A1333A020

Datasheet

B82801A Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive - 33 µH - 1:20 - 2.5mOhm Primary, 320mOhm Secondary - Surface Mount 0.138" L x 0.185" W (3.50mm x 4.70mm) 0.138" (3.50mm) J Lead
AS-112

AS-112

CURR SENSE XFMR 1:200CT 15A T/H

Amgis, LLC

500 -
RFQ
AS-112

Datasheet

AS Bulk Active 20kHz ~ 200kHz Non-Invasive (Solid Core) - 100 mH 700VµS 1:200CT - 2.25Ohm Max - Through Hole 0.677" L x 0.375" W (17.20mm x 9.53mm) 0.803" (20.40mm) PC Pin
055650

055650

TRANSF CRNT SENSE 50:1 6MH

Bourns Inc.

120 -
RFQ
055650

Datasheet

0556xx, Kaschke Tray Active 10kHz ~ 300kHz Invasive - 6 mH 180VµS - - 140Ohm - Through Hole 1.063" L x 0.709" W (27.00mm x 18.00mm) 0.689" (17.50mm) PC Pin
XZM-CT50A01

XZM-CT50A01

CURRENT SENSE TRANSFORMER

Zettler Magnetics

966 -
RFQ
XZM-CT50A01

Datasheet

XZM Tray Active 50Hz ~ 60Hz Invasive 50 A - - 1000:1 - - - Through Hole 0.906" L x 0.906" W (23.00mm x 23.00mm) 0.787" (20.00mm) PC Pin
055653

055653

TRANSF CRNT SENSE 300:1 216MH

Bourns Inc.

120 -
RFQ
055653

Datasheet

0556xx, Kaschke Tray Active 10kHz ~ 300kHz Invasive - 216 mH 1070VµS - - 3.4Ohm - Through Hole 1.063" L x 0.709" W (27.00mm x 18.00mm) 0.689" (17.50mm) PC Pin
ASM-010

ASM-010

CURR SENSE XFMR 10A T/H

Amgis, LLC

270 -
RFQ

-

ASM Tray Active 50/60Hz Non-Invasive (Solid Core) - - - - - - - Through Hole 0.677" L x 0.375" W (17.20mm x 9.53mm) 0.803" (20.40mm) PC Pin
RL-7747-500

RL-7747-500

CURRENT SENSE XFMR 500:1 TH

Renco Electronics, Inc.

996 -
RFQ
RL-7747-500

Datasheet

- Bulk Active 47Hz ~ 400Hz Invasive 40 A - - 500:1 1:500 0.3mOhm Primary, 21mOhm Secondary - Through Hole 0.860" L x 0.850" W (21.84mm x 21.59mm) 0.710" (18.03mm) PC Pin
SCS-4-4-40T-TR

SCS-4-4-40T-TR

SMD CURRENT TRANSFORMER 132H-TR

Signal Transformer

1,997 -
RFQ
SCS-4-4-40T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 132 µH - 40:1 - 3mOhm Primary, 1.6Ohm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
SCS-4-4-30T-TR

SCS-4-4-30T-TR

SMD CURRENT TRANSFORMER 74H-TR

Signal Transformer

1,995 -
RFQ
SCS-4-4-30T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 74 µH - 30:1 - 3mOhm Primary, 800mOhm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
SCS-4-4-20T-TR

SCS-4-4-20T-TR

SMD CURRENT TRANSFORMER 33H-TR

Signal Transformer

1,989 -
RFQ
SCS-4-4-20T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 33 µH - 20:1 - 3mOhm Primary, 350mOhm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
SCS-4-4-150T-TR

SCS-4-4-150T-TR

SMD CURRENT TRANSFORMER 1800H-TR

Signal Transformer

1,991 -
RFQ
SCS-4-4-150T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 1.8 mH - 150:1 - 3mOhm Primary, 21Ohm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
SCS-4-4-125T-TR

SCS-4-4-125T-TR

SMD CURRENT TRANSFORMER 1280H-TR

Signal Transformer

1,978 -
RFQ
SCS-4-4-125T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 1.28 mH - 125:1 - 3mOhm Primary, 13Ohm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
SCS-4-4-100T-TR

SCS-4-4-100T-TR

SMD CURRENT TRANSFORMER 820H-TR

Signal Transformer

1,448 -
RFQ
SCS-4-4-100T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 820 µH - 100:1 - 3mOhm Primary, 9.5Ohm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
SCS-4-4-50T-TR

SCS-4-4-50T-TR

SMD CURRENT TRANSFORMER 205H-TR

Signal Transformer

1,992 -
RFQ
SCS-4-4-50T-TR

Datasheet

SCS Tape & Reel (TR) Active 50kHz ~ 1MHz Invasive 7 A 205 µH - 50:1 - 3mOhm Primary, 2.5Ohm Secondary Max - Surface Mount 0.185" L x 0.144" W (4.70mm x 3.65mm) 0.140" (3.55mm) J Lead
055663

055663

TRANSF CRNT SENSE 100:1 3.1MH

Bourns Inc.

119 -
RFQ
055663

Datasheet

0556xx, Kaschke Tray Active 200kHz ~ 3MHz Invasive - 3.1 mH 360VµS - - 470Ohm - Through Hole 1.063" L x 0.709" W (27.00mm x 18.00mm) 0.689" (17.50mm) PC Pin
055662

055662

TRANSF CRNT SENSE 50:1 0.77MH

Bourns Inc.

118 -
RFQ
055662

Datasheet

0556xx, Kaschke Tray Active 200kHz ~ 3MHz Invasive - 770 µH 180VµS - - 140Ohm - Through Hole 1.063" L x 0.709" W (27.00mm x 18.00mm) 0.689" (17.50mm) PC Pin
AS-111

AS-111

CURR SENSE XFMR 1:100CT 15A T/H

Amgis, LLC

500 -
RFQ
AS-111

Datasheet

AS Bulk Active 20kHz ~ 200kHz Non-Invasive (Solid Core) - 25 mH 350VµS 1:100CT - 550mOhm Max - Through Hole 0.677" L x 0.375" W (17.20mm x 9.53mm) 0.803" (20.40mm) PC Pin
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