RSF3JB47R0 Equivalent & Substitute Parts

Part Overview

The RSF3JB47R0 is a 47 Ohm, ±5% tolerance, 3W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, suitable for applications requiring reliable power dissipation in the 3W range. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

RSF3JB47R0

Stackpole Electronics IncIn Stock: 1157RSF3JB47R0 Datasheet

Current PartRFQ

RSMF5JT47R0

Stackpole Electronics IncIn Stock: 874RSMF5JT47R0 Datasheet

UpgradeRFQ

ROX3SJ47R

TE Connectivity Passive ProductIn Stock: 3500ROX3SJ47R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RSF3JB47R0 are classified based on the following criteria:

Upgrade Substitute (Higher Power Rating): RSMF5JT47R0 maintains identical electrical specifications (47 Ohms, ±5% tolerance, metal oxide film composition, same operating temperature range) but provides increased power dissipation at 5W. This part is suitable for applications where the original 3W rating is marginal or where thermal headroom is required. Packaging differs (Tape & Reel vs. Bulk), which may affect procurement and assembly processes.

Manufacturer Recommended Substitute (Direct Equivalent): ROX3SJ47R from TE Connectivity Passive Product matches the 3W power rating and 47 Ohm resistance with ±5% tolerance. This part is mechanically and electrically compatible as a direct replacement. Differences include slightly different physical dimensions, temperature coefficient (±350ppm/°C vs. ±200ppm/°C), maximum operating temperature (200°C vs. 235°C), and enhanced features (pulse withstanding capability).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: ROX3SJ47R is the manufacturer-recommended substitute and provides equivalent 3W power handling with identical resistance and tolerance specifications. All three parts maintain ROHS3 compliance and REACH unaffected status. Selection of ROX3SJ47R is appropriate when sourcing from TE Connectivity is preferred or when the slightly different physical dimensions (5.50mm diameter vs. 6.00mm) are accommodated in the PCB layout.

For Thermal Margin Enhancement: RSMF5JT47R0 is suitable when circuit design requires additional power dissipation margin beyond the original 3W specification. The 5W rating provides 67% additional thermal capacity while maintaining identical electrical characteristics. This upgrade is appropriate for high-reliability applications or environments with elevated ambient temperatures. Packaging format (Tape & Reel) may require adjustment to assembly processes designed for Bulk packaging.

Temperature Considerations: RSF3JB47R0 and RSMF5JT47R0 both support operation to 235°C, while ROX3SJ47R is rated to 200°C maximum. For applications requiring sustained operation above 200°C, the Stackpole parts are required. The temperature coefficient difference (±200ppm/°C vs. ±350ppm/°C) is secondary to the maximum operating temperature constraint.

Frequently Asked Questions (FAQ)

Q: Can ROX3SJ47R replace RSF3JB47R0 in all applications? A: ROX3SJ47R is electrically and mechanically compatible for direct substitution in applications operating at or below 200°C. The slightly smaller physical dimensions (5.50mm vs. 6.00mm diameter) must be verified against PCB layout constraints. Both parts are 3W rated with identical 47 Ohm, ±5% specifications.

Q: When should RSMF5JT47R0 be selected instead of the original RSF3JB47R0? A: RSMF5JT47R0 is selected when the circuit design requires thermal margin beyond 3W dissipation or when operating in elevated temperature environments. The 5W rating provides additional safety margin. Packaging format changes from Bulk to Tape & Reel may affect procurement and assembly workflows.

Q: Are all three parts ROHS3 compliant? A: Yes. RSF3JB47R0, RSMF5JT47R0, and ROX3SJ47R are all ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements.

Q: What is the impact of different temperature coefficients? A: RSF3JB47R0 and RSMF5JT47R0 have ±200ppm/°C, while ROX3SJ47R has ±350ppm/°C. For precision applications with wide temperature swings, the lower temperature coefficient of Stackpole parts provides better resistance stability. For general-purpose applications, this difference is typically negligible.

Q: Can packaging format differences affect circuit performance? A: Packaging format (Bulk, Tape & Reel, Cut Tape) affects procurement, storage, and assembly processes but does not impact electrical or thermal performance. Physical dimensions must be verified against PCB layout to ensure mechanical fit.