CHF3020DBF201R Equivalent & Substitute Parts

Part Overview

The CHF3020DBF201R is a 200 Ohms ±5% 25W thick film chassis mount resistor manufactured by Bourns Inc., designed for RF and high-frequency applications. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The part features aluminum oxide coating with flanged mounting and operates across a temperature range of -55°C to 150°C.

Substiute Parts

CHF3020DBF201R

Bourns Inc.In Stock: 1163CHF3020DBF201R Datasheet

Current PartRFQ

L25J200E

OhmiteIn Stock: 858L25J200E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CHF3020DBF201R is determined by the following critical parameters:

• Electrical Specifications: Resistance value (200 Ohms) and tolerance (±5%) must match exactly
• Power Rating: 25W minimum capacity required
• Operating Temperature: Substitute must support the -55°C to 150°C range or exceed it
• Mounting Compatibility: Flanged or bracket-based mounting must accommodate existing PCB or chassis layouts
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status required

The L25J200E from Ohmite meets these core electrical and compliance requirements, though with differences in composition, temperature coefficient, and physical dimensions that must be evaluated for specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

The L25J200E qualifies as an electrical equivalent based on matching resistance, tolerance, and power rating specifications. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

Key considerations for selection:

• Composition Difference: The L25J200E uses wirewound construction versus the thick film composition of the CHF3020DBF201R. This affects frequency response characteristics and noise performance in RF applications.
• Temperature Performance: The L25J200E supports extended operating temperatures to 350°C, exceeding the CHF3020DBF201R range of -55°C to 150°C.
• Physical Form Factor: The CHF3020DBF201R uses axial package with tab leads and flanged mounting, while the L25J200E is radial/tubular with solder lugs and bracket mounting. PCB layout modifications may be required.
• Product Status: The CHF3020DBF201R is obsolete; the L25J200E is active production, ensuring long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the L25J200E directly replace the CHF3020DBF201R without circuit modifications?

A: Electrical substitution is possible based on matching resistance, tolerance, and power rating. However, physical mounting differences (axial flanged versus radial bracketed) and composition differences (thick film versus wirewound) require mechanical redesign and potential RF performance evaluation.

Q: What is the impact of wirewound versus thick film composition on RF applications?

A: Wirewound resistors exhibit different frequency response and inductive characteristics compared to thick film types. The L25J200E's wirewound construction may introduce inductance effects at high frequencies, requiring circuit-level assessment for RF compatibility.

Q: Are both parts suitable for the same temperature operating range?

A: The CHF3020DBF201R operates from -55°C to 150°C. The L25J200E extends this range to -55°C to 350°C, providing broader thermal capability. Applications limited to the original -55°C to 150°C range are compatible with both parts.

Q: What mounting modifications are necessary for substitution?

A: The CHF3020DBF201R uses flanged mounting with tab leads in an axial package. The L25J200E requires bracket mounting (not included) with solder lug connections in a radial/tubular package. Mechanical redesign of the mounting interface is required.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the CHF3020DBF201R and L25J200E are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.