ET25B2000 Ferrite Core Equivalent & Substitute Parts

Part Overview

The ET25B2000 is a hinged (snap-on) free hanging ferrite core manufactured by Leader Tech Inc. with an impedance rating of 890Ohm @ 700MHz. This component features a 1.000" inner diameter and 2.000" outer diameter with a length of 2.531". The ET25B2000 is classified as obsolete, making identification of suitable substitute components necessary for ongoing system support and new design implementations.

Substiute Parts

ET25B2000

Leader Tech Inc.In Stock: 1215ET25B2000 Datasheet

Current PartRFQ

TC25B2000

Leader Tech Inc.In Stock: 884TC25B2000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ET25B2000 is based on the following critical parameters that must remain consistent:

• Impedance @ Frequency: 890Ohm @ 700MHz (electrical performance requirement)
• Inner Dimension: 1.000" Dia (25.40mm) (mechanical fit requirement)
• Material: 25 (ferrite material composition)
• Mounting Type: Free Hanging (installation method)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

The TC25B2000 qualifies as a manufacturer-recommended substitute because it maintains the same impedance specification, inner diameter, material composition, mounting type, and RoHS compliance. Variations in outer diameter and length are acceptable when the core mechanical interface (inner diameter) and electrical performance remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

The TC25B2000 is the manufacturer-recommended substitute for the obsolete ET25B2000. Both components maintain identical impedance performance (890Ohm @ 700MHz) and inner diameter (1.000"), which are the critical parameters for electromagnetic compatibility and mechanical fit on the cable or conductor.

The primary difference between these parts is the design approach: the ET25B2000 uses a hinged snap-on mechanism, while the TC25B2000 employs a clamp design. Both designs provide free hanging mounting capability. The TC25B2000 features a shorter length (1.500" versus 2.531") and slightly larger outer diameter (2.126" versus 2.000"), which may require mechanical layout verification in space-constrained applications.

The TC25B2000 is currently in active production status with ROHS3 compliance and EAR99 export classification, making it suitable for new designs and ongoing support of legacy systems.

Frequently Asked Questions (FAQ)

Q: Can the TC25B2000 directly replace the ET25B2000 in existing assemblies?

A: The TC25B2000 maintains the same impedance specification and inner diameter, which are the primary electrical and mechanical interface requirements. However, the different design (clamp versus hinged snap-on) and dimensional changes (length and outer diameter) require verification that the mounting mechanism and physical envelope are compatible with your specific application.

Q: What is the significance of the inner diameter match between these parts?

A: The inner diameter (1.000") determines the cable or conductor size that the ferrite core can accommodate. This dimension must remain constant for proper fit and electromagnetic coupling. Both the ET25B2000 and TC25B2000 share this critical dimension.

Q: Why does the impedance specification include a frequency value?

A: Ferrite core impedance is frequency-dependent. The 890Ohm @ 700MHz specification indicates that both parts provide this impedance level specifically at 700MHz. This frequency-specific rating ensures predictable electromagnetic performance in applications operating at or near this frequency.

Q: Are there any regulatory differences between the ET25B2000 and TC25B2000?

A: Both parts are ROHS3 compliant and REACH unaffected. The TC25B2000 carries an EAR99 export classification, while the ET25B2000 is marked as obsolete. For new procurements, the TC25B2000 is the appropriate selection.

Q: What does "free hanging" mounting type mean?

A: Free hanging indicates that the ferrite core is designed to be installed directly onto a cable or conductor without requiring additional mounting hardware or fixtures. Both the hinged snap-on and clamp designs support this installation method.