RSF3JB510R Equivalent & Substitute Parts

Part Overview

The RSF3JB510R is a 510 Ohms ±5% 3W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame retardant coating and safety design, with an operating temperature range of -55°C to 235°C. The part is currently in active production status with 874 pieces available in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this resistor category.

Substiute Parts

RSF3JB510R

Stackpole Electronics IncIn Stock: 936RSF3JB510R Datasheet

Current PartRFQ

SQP500JB-510R

YAGEOIn Stock: 2587SQP500JB-510R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF3JB510R is determined by the following critical parameters:

• Resistance Value: Must be 510 Ohms ±5%
• Tolerance: Must be ±5% or tighter
• Package Configuration: Must be axial through-hole format
• Termination Count: Must have 2 terminations
• Regulatory Compliance: Must maintain ROHS3 compliance and REACH unaffected status
• Power Rating: Substitute parts may have equal or higher power ratings; lower ratings are not acceptable

The SQP500JB-510R from YAGEO meets the resistance, tolerance, package, and compliance requirements. While this substitute has a higher power rating (5W versus 3W) and different composition (cement versus metal oxide film), it maintains electrical equivalence for the specified 510 Ohm resistance value and axial package format.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF3JB510R and SQP500JB-510R maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The SQP500JB-510R provides higher power dissipation capability (5W) compared to the 3W rating of the main part, making it suitable for applications where thermal margin is beneficial. However, the operating temperature range of the SQP500JB-510R is limited to -55°C to 155°C, compared to the RSF3JB510R's -55°C to 235°C range. Component selection should be based on the specific thermal and environmental requirements of the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the SQP500JB-510R be used as a direct replacement for the RSF3JB510R?

A: The SQP500JB-510R is electrically equivalent for the 510 Ohm resistance value and ±5% tolerance specification. Both parts are axial through-hole resistors with 2 terminations and maintain identical regulatory compliance. Substitution is valid when the application operating temperature does not exceed 155°C and the higher power rating does not create thermal or spatial constraints.

Q: What is the significance of the different power ratings?

A: The RSF3JB510R is rated for 3W power dissipation, while the SQP500JB-510R is rated for 5W. A higher power rating indicates greater thermal capacity. In applications where the RSF3JB510R is specified, the SQP500JB-510R will operate with additional thermal margin. The substitute part will not be damaged by power levels within the 3W specification of the original part.

Q: Are there differences in temperature coefficient between these parts?

A: The RSF3JB510R specifies a temperature coefficient of ±200ppm/°C. The SQP500JB-510R does not provide a temperature coefficient specification in the available data. For applications requiring precise temperature stability, the RSF3JB510R should be selected.

Q: What is the impact of different resistor compositions?

A: The RSF3JB510R uses metal oxide film composition with flame retardant coating, while the SQP500JB-510R uses cement composition with flame proof and pulse withstanding features. Both compositions are suitable for through-hole axial resistor applications. Composition differences do not affect the 510 Ohm resistance value or ±5% tolerance specification.

Q: How do packaging differences affect component selection?

A: The RSF3JB510R is supplied in bulk packaging, while the SQP500JB-510R is supplied in tray packaging. Packaging format affects inventory management and handling procedures but does not impact electrical or mechanical compatibility in the circuit application.