29F0418-1SR Ferrite Bead Power Line Filter - Equivalent & Substitute Parts

Part Overview

The 29F0418-1SR is a 4-line power line ferrite bead manufactured by Laird-Signal Integrity Products, designed for electromagnetic interference (EMI) suppression in surface mount applications. This component provides 119 Ohms impedance at 100 MHz with a maximum current rating of 6A and operates across the temperature range of -40°C to 125°C.

The 29F0418-1SR carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this ferrite bead configuration.

Substiute Parts

29F0418-1SR

Laird-Signal Integrity ProductsIn Stock: 523829F0418-1SR Datasheet

Current PartRFQ

29F0418-1SR-10

Laird-Signal Integrity ProductsIn Stock: 180329F0418-1SR-10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 29F0418-1SR is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Impedance value: 119 Ohms @ 100 MHz
• Current rating: 6A maximum
• DC resistance: 10mOhm maximum
• Number of lines: 4

Mechanical & Package Specifications:

• Package type: 8-SMD, Flat Lead
• Mounting method: Surface Mount
• Physical dimensions: 0.240" L x 0.177" W (6.10mm x 4.50mm)
• Operating temperature: -40°C ~ 125°C

Functional Classification:

• Filter type: Power Line
• Series compatibility: 29 series

The substitute part 29F0418-1SR-10 meets all electrical and mechanical equivalence criteria. The primary distinction between the main part and its substitute is product status and packaging format, with differences in height specification and compliance certifications noted below.

Parameter Comparison

Engineering Selection Recommendations

For New Designs and Ongoing Production:

The 29F0418-1SR-10 is the recommended substitute for the obsolete 29F0418-1SR. This part maintains full electrical and mechanical equivalence while offering the following advantages:

• Active Product Status: The 29F0418-1SR-10 is currently in active production, ensuring long-term supply chain availability and support.
• Regulatory Compliance: ROHS3 compliance status meets current environmental and regulatory requirements, whereas the main part is RoHS non-compliant.
• Packaging Efficiency: Tape & Reel (TR) packaging format supports automated assembly processes and reduces handling costs in production environments.
• Dimensional Optimization: The reduced maximum height of 0.165" (4.19mm) compared to 0.190" (4.83mm) provides improved board-level design flexibility without compromising electrical performance.

Both parts share identical electrical specifications (119 Ohms @ 100 MHz, 6A current rating, 10mOhm DCR) and mechanical footprint (0.240" L x 0.177" W), confirming direct substitutability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 29F0418-1SR-10 be used as a direct replacement for the 29F0418-1SR in existing designs?

A: Yes. The 29F0418-1SR-10 provides electrical and mechanical equivalence. Both parts deliver 119 Ohms impedance at 100 MHz, support 6A maximum current, and feature identical 8-SMD flat lead packaging with 0.240" x 0.177" footprint dimensions. The height difference (0.165" vs 0.190") is within typical PCB design tolerances for surface mount applications.

Q: What is the significance of the height specification difference between these parts?

A: The 29F0418-1SR-10 has a maximum height of 0.165" (4.19mm) compared to the main part's 0.190" (4.83mm). This 0.025" (0.64mm) reduction may be relevant in space-constrained applications or designs with tight vertical clearance requirements. In most standard applications, this difference does not impact functionality or compatibility.

Q: Why is the 29F0418-1SR marked as Obsolete?

A: The 29F0418-1SR carries an Obsolete product status, indicating that Laird-Signal Integrity Products has discontinued active manufacturing and support for this specific part number. The 29F0418-1SR-10 represents the current active equivalent in the product line.

Q: What is the difference between bulk packaging and Tape & Reel (TR) packaging?

A: The main part is supplied in bulk packaging format, while the 29F0418-1SR-10 uses Tape & Reel (TR) packaging. TR packaging is designed for automated pick-and-place assembly equipment, improving production efficiency and reducing manual handling. Bulk packaging is typically used for manual assembly or lower-volume applications.

Q: Are there any compliance or regulatory differences between these parts?

A: Yes. The 29F0418-1SR-10 is ROHS3 compliant, meeting current environmental regulations for restricted hazardous substances. The main part is RoHS non-compliant. For applications subject to RoHS requirements or environmental regulations, the 29F0418-1SR-10 is the appropriate selection.

Q: Do both parts operate across the same temperature range?

A: Yes. Both the 29F0418-1SR and 29F0418-1SR-10 operate across the identical temperature range of -40°C to 125°C, ensuring thermal performance equivalence across all operating conditions.

Q: What are the key electrical parameters that define substitutability for this ferrite bead?

A: Substitutability is determined by: impedance value (119 Ohms @ 100 MHz), maximum current rating (6A), DC resistance (10mOhm), and number of lines (4). Any substitute must match these specifications exactly. The 29F0418-1SR-10 meets all these criteria.