ACF451832-332-TLD01 Equivalent & Substitute Parts

Part Overview

The ACF451832-332-TLD01 is a 3rd order LC (T-Type) EMI filter manufactured by TDK Corporation, designed for single-channel applications in data line filtering for mobile devices. This surface mount component operates at 300 mA with a cutoff frequency optimized for EMI suppression across 35 MHz to 100 MHz frequency ranges, delivering 25 dB attenuation. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

ACF451832-332-TLD01

TDK CorporationIn Stock: 838ACF451832-332-TLD01 Datasheet

Current PartRFQ

YFF18SC1H472MT0H0N

TDK CorporationIn Stock: 2365YFF18SC1H472MT0H0N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ACF451832-332-TLD01 is constrained by the following critical parameters:

Electrical Compatibility:

• Voltage rating must be ≥ 50 V
• Current handling capability must support ≥ 300 mA
• Channel resistance must not exceed 0.15 Ω to maintain signal integrity
• Attenuation characteristics must provide equivalent EMI suppression in the 35 MHz to 100 MHz band

Mechanical Compatibility:

• Package footprint must be compatible with 1812 (4532 Metric) land pattern
• Physical dimensions must not exceed 0.177" L x 0.126" W x 0.079" H to fit existing PCB layouts
• Pad configuration must accommodate 3 PC pad design

Environmental & Compliance:

• Operating temperature range must encompass -25°C to 85°C minimum
• RoHS3 compliance required
• MSL rating of 1 (Unlimited) preferred for manufacturing flexibility

The substitute part YFF18SC1H472MT0H0N is identified as a manufacturer-recommended alternative. However, this part represents a different component category (feed-through capacitor) and does not meet the mechanical footprint or electrical topology requirements of the original LC filter specification.

Parameter Comparison

Engineering Selection Recommendations

The YFF18SC1H472MT0H0N cannot serve as a direct functional substitute for the ACF451832-332-TLD01 due to fundamental incompatibilities:

Package Incompatibility: The substitute part uses a 0603 (1608 Metric) package with 4 PC pads, whereas the original component requires a 1812 (4532 Metric) package with 3 PC pads. This difference prevents direct PCB footprint compatibility without redesign.

Functional Incompatibility: The original part is an LC (T-Type) 3rd order low-pass filter optimized for EMI suppression. The substitute is a feed-through capacitor, representing a different component topology and filtering architecture. These components serve different circuit functions and cannot be interchanged without circuit redesign.

Compliance Alignment: Both components maintain ROHS3 compliance and MSL 1 ratings, supporting equivalent manufacturing and storage requirements.

For applications requiring the ACF451832-332-TLD01, direct functional equivalents must be sourced from TDK Corporation's current LC filter product lines that maintain the 1812 (4532 Metric) package specification and 3rd order low-pass filter topology. Alternatively, circuit redesign may accommodate alternative filter topologies or package sizes if application constraints permit.

Frequently Asked Questions (FAQ)

Q: Can the YFF18SC1H472MT0H0N replace the ACF451832-332-TLD01 on the same PCB?

A: No. The YFF18SC1H472MT0H0N uses a 0603 package footprint, while the ACF451832-332-TLD01 requires a 1812 package footprint. Direct PCB substitution is not possible without redesign of the circuit board layout.

Q: What is the primary functional difference between these parts?

A: The ACF451832-332-TLD01 is a 3rd order LC (T-Type) EMI filter designed for multi-element filtering across a frequency band. The YFF18SC1H472MT0H0N is a single feed-through capacitor element. These represent different filtering architectures and cannot perform equivalent functions.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both components are ROHS3 compliant and carry MSL 1 (Unlimited) ratings, meeting current manufacturing and environmental requirements.

Q: What parameters must an alternative part match to be considered a true substitute?

A: A true substitute must maintain the 1812 (4532 Metric) package footprint with 3 PC pads, support 300 mA minimum current, provide 50 V voltage rating, deliver equivalent EMI attenuation in the 35 MHz to 100 MHz band, and operate across the -25°C to 85°C temperature range.

Q: Should I consider circuit redesign to use the YFF18SC1H472MT0H0N?

A: Circuit redesign would be required to incorporate a feed-through capacitor in place of an LC filter. This approach fundamentally changes the filtering topology and may not provide equivalent EMI suppression performance for the intended application.