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Best Alternatives to WCM2012F2SF-900T04

Package: 2012 (0805)TAI-TECHFusesImpedance @ Frequency: 90Ω @ 100MHzRated Current: 400mAVoltage Rating - DC: 50VNumber of Lines: 2DC Resistance (DCR): 0.30Ω max

WCM2012F2SF-900T04 is a 90Ω, 400mA, 2-line 2012 common-mode filter. Alternatives need pinout and land-pattern review.

AI replacement insight

Electrical riskmedium

Impedance curve may differ.

Package risklow

Kept parts use 2012 size.

Firmware risklow

Passive EMI part.

Sourcing riskmedium

Cross-vendor approval needed.

Can it be replaced directly?

No confirmed pin-compatible replacement is proven from the supplied fields.

Best replacement path

Start with 90Ω, 400mA, 0.30Ω 2012 candidates, then verify pinout.

Main risk

Pinout and impedance behavior are not fully verified.

Recommended alternatives

3

Alternative comparison matrix

Feature / factorWCM2012F2SF-900T04HDMI2012F2SF-900T04YLM2012-900TSRF2012-900YACompatibility / risk
Package2012 (0805)2012 (0805)2012 (0805 Metric)2012 (0805)2012 (0805) / 2012 (0805 Metric) — same size; YLM2012-900T: same metric size; SRF2012-900YA: same size; YLM2012-121T: same size
Pinout4 pins, 2 lines4 pins, 2 lines4 pins, 2 lines4 pins, 2 lines4 pins, 2 lines — map missing; YLM2012-900T: map missing; SRF2012-900YA: map missing; YLM2012-121T: map missing
Resistance90Ω@100MHz, 0.30Ω90Ω@100MHz, 0.30Ω90Ω@100MHz, 0.30Ω90Ω@100MHz, 0.30Ω90Ω@100MHz, 0.30Ω / 120Ω@100MHz, 0.30Ω — Z and DCR match; YLM2012-900T: Z and DCR match; SRF2012-900YA: Z and DCR match; YLM2012-121T: higher Z
Current400mA400mA400mA400mA400mA — same rating; YLM2012-900T: same rating; SRF2012-900YA: same rating; YLM2012-121T: same rating
Voltage50V50V-50V or 100V50V / 50V or 100V — same rating; SRF2012-900YA: source conflict; YLM2012-121T: same rating
Temperature-40 to +125C--40 to +125C--40 to +125C — same range

Application & sourcing insights

Questions & answers

HDMI2012F2SF-900T04, YLM2012-900T, and SRF2012-900YA are closest on key supplied ratings.