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TDK Corporation ACM2012E-681-2P-T00 — EMI Filters & Ferrite Beads

TDK ACM2012E-681-2P-T00 Signal Line Filter

MPNACM2012E-681-2P-T00
Obsolete

TDK Corporation ACM-E series signal line common-mode filter, ACM2012E-681-2P-T00, 680 Ohms @ 100 MHz, 170 mA, 50 VDC, 0805 SMD, 2-line.

$1.6500Ref. price · indicative, final on quote
TDK Corporation ACM2012E-681-2P-T00 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

ACM2012E-681-2P-T00 specifications
ParameterValue
SeriesACM-E
Filter typeSignal Line
MountingSurface Mount
Voltage rating - DC50V
Current rating170mA
Impedance @ frequency680 Ohms @ 100 MHz
Operating temperature-40°C~85°C
Height0.043\" (1.10mm)
Size (Dimension)0.079\" L x 0.047\" W (2.00mm x 1.20mm)
PackageTape & Reel (TR); Cut Tape (CT)
CaseHorizontal, 4 PC Pad
Number of lines2
DC resistance (DCR)1.8Ohm

Product details

680 Ohms at 100 MHz — the common-mode suppression spec

TDK ACM2012E-681-2P-T00 is a 2-line common-mode filter in the ACM-E series, delivering 680 Ohms of impedance at 100 MHz. Rated for 170 mA continuous current with 1.8 Ohm max DCR — the insertion loss from the series resistance stays under 0.3 dB at the rated current, but the voltage drop across the DCR matters for low-voltage supply rails.

Obsolete — spot-market sourcing only

Sourced through independent distribution; reel quantities and date codes confirmed at RFQ.

0805 footprint and board-fit

Horizontal 4-pad configuration with the two signal lines routed through separate ferrite cores; common-mode attenuation starts above 10 MHz and peaks in the 100 MHz band. Operating temperature -40°C to +85°C covers most indoor and telecom ambient ranges.

Frequently asked questions

What is the impedance rating of ACM2012E-681-2P-T00?

680 Ohms at 100 MHz. This is a common-mode filter for signal lines — the impedance peak suppresses conducted EMI in the 30-300 MHz range typical of switching noise on data and control lines.

What is the current rating and DC resistance of ACM2012E-681-2P-T00?

170 mA continuous current with 1.8 Ohm max DCR. At full rated current the voltage drop across the DCR is 0.31 V — factor this into the rail budget when filtering low-voltage supplies.