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TDK Electronics AG

TDK Electronics AG- Transformers

TDK Electronics AG, formerly known as EPCOS AG, is a leading global manufacturer of electronic components, modules and systems. Headquartered in Munich, Germany, the company was originally founded as a joint venture between Siemens and Matsushita in 1989, later becoming EPCOS AG, and was acquired by TDK Corporation of Japan in 2008. Today, the EPCOS brand is a product brand of TDK Electronics AG, focusing on passive electronic components such as capacitors, inductors, and surface acoustic wave (SAW) filters. The company offers an extensive portfolio of over 40,000 products, including aluminum electrolytic capacitors, film capacitors, multilayer ceramic capacitors (MLCCs), ferrites and inductors, and SAW components for frequency control and filtering. These components serve key markets including automotive electronics, industrial electronics, information and communication technology, and consumer electronics. TDK Electronics AG is renowned for its advanced ceramic technologies, delivering high-performance solutions in miniaturization, reliability, and environmental resistance. The company maintains a global manufacturing and sales network, with facilities in Europe, Asia, and the Americas. As part of the TDK Group, one of the world’s largest electronic component manufacturers, the EPCOS brand benefits from extensive R&D resources and a broad application reach. Its components are widely used in powertrain systems, advanced driver-assistance systems (ADAS), renewable energy inverters, and 5G base stations, making it a preferred supplier for tier-1 automotive and industrial OEMs. With a strong legacy in innovation and quality, TDK Electronics AG continues to shape the future of passive components through developments in material science and manufacturing precision.

03

Transformers - 型号列表

244 parts in total

RF Family/Standard

Turns Ratio - Primary:Secondary

Length - Overall

Standard Package

Depth

DC Resistance (DCR) - Primary

DC Resistance (DCR) - Secondary

Inductance

Inductance Range

Type

Current - Output

Applications

Height

Frequency

Isolation

Transformer Type

Crosstalk

CMRR, PSRR (Typ)

Return Loss (Min)

Insertion Loss (Max)

Application Specifics

Mfr Part #Quantity AvailablePriceRF Family/StandardTurns Ratio - Primary:SecondaryLead StyleStandard PackageMounting TypeDC Resistance (DCR) - PrimaryRoHSLength - OverallTypeApplicationsDepthFrequencyCurrent - OutputDC Resistance (DCR) - SecondaryIsolationInductance RangeInductanceEU RoHSHeightApplication SpecificsTransformer TypeCrosstalkCMRR, PSRR (Typ)Return Loss (Min)Insertion Loss (Max)Diameter
B82801B 205A100
B82801B 205A100

Current Transformer 1:100 500VAC 0.0008Ohm Prim. DCR 5.5Ohm Sec. DCR 20000mA Surface Mount

epcos (tdk)

67181: ¥15.1866-1:100Gull WingTape & ReelSurface Mount0.0008 Ohm-----0.05 to 1 MHz20000 mA5.5 Ohm--2000 uH---------
EPCB78421A1852A3
EPCB78421A1852A3

Telecom Transformer 2.25:2.25:1 2000VAC 4.2Ohm Prim. DCR 0.7Ohm Sec. DCR Surface Mount

epcos (tdk)

-B784212.25:2.25:1Gull Wing--4.2(Typ) Ohm--------2000 Vac3.019(Typ) mH----------
EPCB82801A743A30
EPCB82801A743A30

Current Transformer 1:30 360VAC 0.0025Ohm Prim. DCR 0.8Ohm Sec. DCR 7000mA Surface Mount

epcos (tdk)

--1:30--Surface Mount0.0025 Ohm-----0.05 to 1 MHz7000 mA0.8 Ohm--74 uH---------
EPCB82801B305A125
EPCB82801B305A125

Current Transformer 1:125 500VAC 0.0008Ohm Prim. DCR 6.5Ohm Sec. DCR 20000mA Surface Mount

epcos (tdk)

--1:125Gull Wing-Surface Mount0.0008 Ohm-----0.05 to 1 MHz20000 mA6.5 Ohm--3000 uH---------
EPCB82801B504A50
EPCB82801B504A50

Current Transformer 1:50 500VAC 0.0008Ohm Prim. DCR 1.5Ohm Sec. DCR 20000mA Surface Mount

epcos (tdk)

--1:50Gull Wing-Surface Mount0.0008 Ohm-----0.05 to 1 MHz20000 mA1.5 Ohm--500 uH---------
EPCB78417A1706A3
EPCB78417A1706A3

Telecom Transformer 1:1 1500VAC 4.95Ohm Prim. DCR 4.95Ohm Sec. DCR Surface Mount

epcos (tdk)

-B784171:1Gull Wing-----------1500 Vac6.76(Typ) mH----------
EPCB78510A1452A3
EPCB78510A1452A3

Telecom Transformer 1:1:1:1 2000VAC 2Ohm Prim. DCR 2.2Ohm Sec. DCR Surface Mount

epcos (tdk)

-B78510A1452A0031:1:1:1Gull Wing--2(Typ) Ohm--------2000 Vac>22 mH----------
EPCB78408A1226A3
EPCB78408A1226A3

RF Transformer 47MHz to 2500MHz Surface Mount

epcos (tdk)

-----Surface Mount---------------------
EPCB78408A1208A3
EPCB78408A1208A3

RF Transformer 1:1 5MHz to 100MHz Surface Mount

epcos (tdk)

--1:1--Surface Mount---------------RF Transformer-----
EPCB78408A1227A3
EPCB78408A1227A3

RF Transformer 45MHz to 2500MHz Surface Mount

epcos (tdk)

-----Surface Mount---------------Matching Transformer-----
EPCB78476A8068A3
EPCB78476A8068A3

Telecom Transformer 1CT:1CT 1500VAC -1dB Surface Mount

epcos (tdk)

-B784761CT:1CTGull Wing-----------1500 Vac0.35(Min) mH------33@100MHz dB-25@100MHz dB-12@60MHz to 80MHz dB-1@0.1MHz to 100MHz dB-
EPCB78476A8252A3
EPCB78476A8252A3

Telecom Transformer 1CT:1CT 1500VAC -1dB Surface Mount

epcos (tdk)

-B784761CT:1CTGull Wing-----------1500 Vac0.35(Min) mH------28@100MHz dB-30@100MHz dB-10@100MHz dB-1@1MHz to 100MHz dB-
EPCB82801C1265A150
EPCB82801C1265A150

Current Transformer 1:150 1500VAC 0.00028Ohm Prim. DCR 2.2Ohm Sec. DCR 40000mA Surface Mount

epcos (tdk)

--1:150Gull Wing-Surface Mount0.00028 Ohm-----50 to 500 KHz40000 mA2.2 Ohm------------
B65811J250J41
B65811J250J41

Ferrite Core RM Core 23.2mm 16.5mm Transformer Applications FERRITE CORES RM8N41250+5%-5%

tdk epcos

571: ¥12.648B65811--200--Lead free / RoHS Compliant23.2 mmRM CoreTransformer Applications16.5 mm---------------
B65843AY38
B65843AY38

Ferrite Core EP Core 12.8mm 13mm 9mm Transformer Applications FERRITE CORES EP13T387000+40%-30%

tdk epcos

101: ¥7.7772B65843A--500--Lead free / RoHS Compliant12.8 mmEP CoreTransformer Applications13 mm------Compliant9 mmTransformer Applications------
B65947AX22
B65947AX22

Ferrite Core PS Core 10.8mm 35mm Inductive Proximity Switches FERRITE CORES PS35N2235X10,8

tdk epcos

1441: ¥26.792B65947--100--Lead free / RoHS Compliant10.8 mmPS CoreInductive Proximity Switches---------------35 mm
B66289PX187
B66289PX187

Ferrite Core I Core 38.1mm 25.4mm 3.8mm General Application FERRITE CORES I38/4/25N878300+25%-25%

tdk epcos

7201: ¥17.408B66289--480--Lead free / RoHS Compliant38.1 mmI CoreGeneral Application25.4 mm-------3.8 mm-------
B65807N400A48
B65807N400A48

Ferrite Core RM Core 17.9mm 12.5mm Transformer Applications FERRITE CORES RM6N48400+3%-3%

tdk epcos

941: ¥13.668B65807--500--Lead free / RoHS Compliant17.9 mmRM CoreTransformer Applications12.5 mm---------------
B65839AY38
B65839AY38

Ferrite Core EP Core 9.4mm 7.5mm 6.5mm Transformer Applications FERRITE CORES EP7T385200+40%-30%

tdk epcos

101: ¥4.8906B65839--2,000--Lead free / RoHS Compliant9.4 mmEP CoreTransformer Applications7.5 mm------Compliant6.5 mmTransformer Applications------
B65846W1008D1
B65846W1008D1

Ferrite Core EP Core 21.5mm 19.9mm General Application FERRITE CORES FERRITE CORE COIL FORMER SPOOLEP17SumikonPM9630

tdk epcos

8851: ¥8.16B65846--200--Lead free / RoHS Compliant21.5 mmEP CoreGeneral Application19.9 mm------Compliant-General Application------
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