RSF3JB180R Equivalent & Substitute Parts

Part Overview

The RSF3JB180R is a 180 Ohms ±5% 3W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame retardant coating and safety design, suitable for applications requiring reliable power dissipation in the 3-watt range. The part is currently active in production with 809 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

RSF3JB180R

Stackpole Electronics IncIn Stock: 870RSF3JB180R Datasheet

Current PartRFQ

ROX3SJ180R

TE Connectivity Passive ProductIn Stock: 20624ROX3SJ180R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RSF3JB180R is determined by strict equivalence across the following critical parameters:

• Resistance value: 180 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package: Axial through-hole configuration
• Termination count: 2
• RoHS compliance: ROHS3 Compliant

The ROX3SJ180R from TE Connectivity Passive Product meets all substitution criteria. Both parts share identical resistance, tolerance, power rating, and composition. Physical dimensions vary slightly, but both conform to standard axial package specifications. Operating temperature ranges differ marginally (-55°C ~ 200°C for ROX3SJ180R versus -55°C ~ 235°C for RSF3JB180R), with the substitute providing adequate thermal performance for most applications within the overlapping range.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF3JB180R and ROX3SJ180R are active production parts with ROHS3 compliance. Selection between these parts should be based on:

• Availability and lead time requirements
• PCB layout constraints, as the ROX3SJ180R is slightly smaller in both diameter and length
• Temperature margin requirements; the RSF3JB180R provides extended upper temperature operation to 235°C
• Temperature coefficient tolerance; the RSF3JB180R offers tighter coefficient specification at ±200ppm/°C versus ±350ppm/°C for the ROX3SJ180R

Both parts are suitable for direct substitution in applications where the overlapping operating temperature range (-55°C ~ 200°C) is acceptable and physical dimensions do not impose constraints.

Frequently Asked Questions (FAQ)

Q: Can ROX3SJ180R replace RSF3JB180R in all applications?

A: ROX3SJ180R meets the core electrical specifications (180 Ohms, ±5%, 3W, metal oxide film, axial package). Substitution is valid for applications operating within the overlapping temperature range of -55°C to 200°C. Applications requiring operation above 200°C require the RSF3JB180R.

Q: What are the physical dimension differences?

A: RSF3JB180R measures 0.236" diameter x 0.689" length (6.00mm x 17.50mm). ROX3SJ180R measures 0.217" diameter x 0.630" length (5.50mm x 16.00mm). Both are standard axial packages; verify PCB hole spacing and component clearance before substitution.

Q: Are both parts RoHS compliant?

A: Yes, both RSF3JB180R and ROX3SJ180R are ROHS3 compliant.

Q: How do temperature coefficients affect substitution?

A: The RSF3JB180R has a temperature coefficient of ±200ppm/°C, while ROX3SJ180R is ±350ppm/°C. For precision applications with tight tolerance requirements across temperature ranges, the RSF3JB180R provides superior stability. For general-purpose applications, the difference is typically negligible.

Q: What packaging formats are available?

A: RSF3JB180R is supplied in bulk packaging. ROX3SJ180R is supplied in cut tape (CT) format. Verify packaging compatibility with assembly processes and procurement workflows.