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Product Detailed Parameters
- Description：FILTER LC(T) SMD
- Series：ACH
- Mfr：TDK Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Low Pass
- Filter Order：3rd
- Technology：LC (T-Type)
- Number of Channels：1
- Center / Cutoff Frequency：-
- Attenuation Value：25dB @ 120MHz ~ 180MHz
- Resistance - Channel (Ohms)：0.06
- Values：-
- ESD Protection：No
- Operating Temperature：-40°C ~ 125°C
- Applications：General Purpose
- Voltage - Rated：20V
- Mounting Type：Surface Mount
- Package / Case：1210 (3225 Metric), 3 PC Pad
- Size / Dimension：0.071" Dia x 0.126" L (1.80mm x 3.20mm)
- Height：0.108" (2.75mm)
- Current：1.5 A
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Overview
The ACH3218-471-TD01 is a surface-mount LC(T-type) EMI filter circuit manufactured by TDK Corporation. It operates within a frequency range of 120 MHz to 180 MHz and features a capacitance of 68 pF with a rated voltage of 20 V. The component supports a maximum DC current of 1.5 A and has a minimum resistance of 0.06 ohms. Designed for power line filtering, it utilizes a third-order low-pass topology in a 1210 (3225 metric) package with three printed circuit board pads.
Feature Summary
- LC(T-type) third-order low-pass topology for effective noise suppression
- High current handling capability suitable for power line applications
- Surface-mount design optimized for automated assembly processes
Applications
- General purpose EMI filtering
- Power line noise suppression
- Embedded system signal integrity protection
Procurement Notes
Verify component status as the ACH3218-471-TD01 is listed as obsolete or not recommended for new designs. Confirm availability through authorized distributors or secondary markets. Ensure compliance with RoHS3 specifications and check for any product change notices affecting supply chain continuity before finalizing procurement plans.
Selection Notes
Select this component for applications requiring high-current EMI filtration in compact surface-mount layouts. Evaluate the 1210 package dimensions against PCB space constraints. Consider the 1.5 A current rating and 20 V voltage limit to ensure operational safety margins are maintained under peak load conditions.
Part Context
Part of the TDK ACH series of large current EMI filters. This specific model integrates passive components into a single SMD unit to reduce footprint and improve reliability compared to discrete implementations.
Replacement Considerations
Check for manufacturer-recommended substitutes such as the YFF18SC1H103MT0H0N if available. Verify electrical compatibility including cutoff frequency and current ratings when selecting alternative components.
FAQ
What is the package type for the ACH3218-471-TD01?
It uses a 1210 (3225 metric) surface-mount package with three PCB pads.
Is this component suitable for high-frequency applications?
Yes, it is designed for frequency ranges between 120 MHz and 180 MHz.
