ROX1SF82R Equivalent & Substitute Parts

Part Overview

The ROX1SF82R is an 82 Ohm, 1% tolerance, 1W through-hole axial resistor manufactured by TE Connectivity Passive Product. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The ROX1SF82R features metal oxide film construction with flame-proof and pulse-withstanding characteristics, suitable for applications requiring robust thermal and electrical performance across industrial temperature ranges.

Substiute Parts

ROX1SF82R

TE Connectivity Passive ProductIn Stock: 729ROX1SF82R Datasheet

Current PartRFQ

FMF1WSFRF52-82R

YAGEOIn Stock: 1111FMF1WSFRF52-82R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ROX1SF82R is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 82 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

Mechanical Compatibility Criteria:

• Axial package form factor
• Physical dimensions compatible with standard PCB through-hole spacing

The substitute part FMF1WSFRF52-82R meets all electrical equivalence criteria and maintains mechanical compatibility with the original ROX1SF82R specification. While the substitute employs metal film composition rather than metal oxide film, both compositions satisfy the 82 Ohm, ±1%, 1W axial resistor requirement.

Parameter Comparison

Engineering Selection Recommendations

The FMF1WSFRF52-82R from YAGEO is a direct electrical equivalent to the obsolete ROX1SF82R. Selection of this substitute is supported by the following factors:

Product Status: The FMF1WSFRF52-82R maintains active product status, ensuring continued availability and supply chain reliability compared to the obsolete ROX1SF82R.

Electrical Specifications: Both components provide identical resistance (82 Ohms), tolerance (±1%), and power rating (1W), meeting the core functional requirements of the original specification.

Compliance: The FMF1WSFRF52-82R is ROHS3 compliant and REACH unaffected, satisfying modern regulatory requirements for electronic component procurement.

Temperature Performance: The FMF1WSFRF52-82R operates across an extended temperature range (-55°C ~ 155°C) compared to the original part (-55°C ~ 130°C), providing additional thermal margin in applications approaching the upper temperature limit.

Physical Compatibility: Both components employ axial through-hole packaging with two terminations, maintaining mechanical compatibility with existing PCB designs. Minor dimensional differences (0.130" vs 0.138" diameter; 0.354" vs 0.394" length) do not affect standard through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can the FMF1WSFRF52-82R be used as a direct replacement for the ROX1SF82R in existing designs?

A: Yes. Both components meet identical electrical specifications (82 Ohms, ±1%, 1W) and employ axial through-hole packaging. The FMF1WSFRF52-82R is electrically and mechanically compatible with the original ROX1SF82R footprint.

Q: What is the difference between metal oxide film and metal film composition?

A: Metal oxide film and metal film are distinct resistor technologies. The ROX1SF82R uses metal oxide film construction, while the FMF1WSFRF52-82R uses metal film construction. Both achieve the specified 82 Ohm, ±1%, 1W performance. The metal film substitute exhibits a lower temperature coefficient (±100ppm/°C vs ±350ppm/°C), indicating superior temperature stability.

Q: Are there dimensional compatibility concerns with the substitute part?

A: The FMF1WSFRF52-82R is slightly smaller (0.130" diameter x 0.354" length) than the original ROX1SF82R (0.138" diameter x 0.394" length). These dimensional differences are within standard axial resistor tolerance ranges and do not affect compatibility with conventional through-hole PCB designs.

Q: Does the FMF1WSFRF52-82R meet current regulatory requirements?

A: Yes. The FMF1WSFRF52-82R is ROHS3 compliant and REACH unaffected, satisfying current environmental and regulatory standards for electronic component procurement.

Q: What is the availability status of the substitute part?

A: The FMF1WSFRF52-82R maintains active product status with 1007 pieces in current inventory, ensuring reliable supply compared to the obsolete ROX1SF82R.

Q: Can the substitute part handle the same operating temperature range as the original?

A: The FMF1WSFRF52-82R operates across -55°C ~ 155°C, exceeding the original ROX1SF82R range of -55°C ~ 130°C. This extended upper temperature limit provides additional thermal margin for applications operating near the original specification limit.