Is there a pin-compatible replacement for ACM2520-301-2P-T002?

Parts like TDK's ACM2520-601-2P-T002 share the same 2520 package and pinout, but have a lower current rating (0.3A vs 0.4A) and different impedance. Use requires careful engineering validation.

What risks should I check before replacing ACM2520-301-2P-T002?

Key risks include lower current ratings, which can cause overheating or failure, and different common-mode impedance, which will alter the circuit's EMI filtering performance. Also, verify package dimensions to ensure physical fit.

ACM2520-301-2P-T002 Alternatives, Datasheet & Cross Reference | TDK Electronics AG

The TDK ACM2520-301-2P-T002 is a 2520 package common mode filter with 300Ω impedance and a 0.4A current rating. Alternatives require careful review of electrical parameters and package size.

AI replacement insight

Electrical riskhigh

Candidates have lower current ratings or significantly different impedance.

Package riskmedium

Some functional alternates require a board redesign due to different package sizes.

Can it be replaced directly?

No direct, fully-compatible replacement is available. All candidates have significant parametric differences or different packages.

Best replacement path

Reviewing other TDK ACM2520 series parts if deviations in current and impedance are acceptable for the application.

Main risk

The primary risks are reduced current handling capability and altered EMI filtering performance due to impedance mismatch.

Recommended alternatives

Same package and series, but lower current rating and different impedance make it a high-risk alternative.

View details

Alternative comparison matrix

Feature / factor	ACM2520-301-2P-T002	ACM2520-601-2P-T002	ACM2520-102-2P-T002	SMW2012B121DTE	Compatibility / risk
Package	2520	2520	2520	2012 (0805)	2520 / 2012 (0805) — Same package and pin count.; ACM2520-102-2P-T002: Same package and pin count.; SMW2012B121DTE: Different package, requires board redesign.
Current	0.4 A	0.3 A	0.2 A	400 mA	0.3 A / 0.2 A / 400 mA — Candidate has lower current rating.; ACM2520-102-2P-T002: Candidate has 50% lower current rating.; SMW2012B121DTE: Current rating matches.
Impedance	300 Ω	600 Ω	1000 Ω	120 Ω	600 Ω / 1000 Ω / 120 Ω — Higher impedance, affects filtering.; ACM2520-102-2P-T002: Significantly higher impedance, affects filtering.; SMW2012B121DTE: Lower impedance, affects filtering.
Resistance	0.35 Ω	0.45 Ω	0.9 Ω	0.30 Ω	0.45 Ω / 0.9 Ω / 0.30 Ω — Higher DC resistance.; ACM2520-102-2P-T002: Higher DC resistance.; SMW2012B121DTE: Lower DC resistance is better.
Voltage	20 V	-	20 V	50 V	20 V / 50 V — Rated voltage matches.; SMW2012B121DTE: Higher voltage rating.

Application & sourcing insights

Questions & answers

No direct drop-in replacement has been identified. Other parts in the TDK ACM2520 series have different impedance and lower current ratings. Functional alternates with different packages exist but require board redesign.