RSF3JT100R Equivalent & Substitute Parts

Part Overview

The RSF3JT100R is a 100 Ohms ±5% 3W axial through-hole resistor manufactured by Stackpole Electronics Inc. This 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 Active in product status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications.

Substiute Parts

RSF3JT100R

Stackpole Electronics IncIn Stock: 1162RSF3JT100R Datasheet

Current PartRFQ

RSMF5JT100R

Stackpole Electronics IncIn Stock: 1130RSMF5JT100R Datasheet

UpgradeRFQ

ROX3SJ100R

TE Connectivity Passive ProductIn Stock: 38126ROX3SJ100R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RSF3JT100R are qualified based on the following criteria:

Electrical Equivalence: Resistance value (100 Ohms) and tolerance (±5%) must match exactly. Composition must be metal oxide film.

Mechanical Compatibility: Package type must be axial with two terminations. Physical dimensions and form factor must accommodate existing PCB layouts and through-hole mounting.

Environmental & Compliance: Operating temperature range must encompass or equal the original specification. RoHS3 compliance is required. REACH status must be unaffected.

Power Rating Consideration: Substitute parts may have equal or higher power ratings. A higher power rating (5W vs 3W) provides additional thermal margin and is functionally compatible.

Two substitute parts meet these criteria: RSMF5JT100R (Stackpole Electronics Inc, 5W upgrade) and ROX3SJ100R (TE Connectivity, equivalent 3W specification).

Parameter Comparison

Engineering Selection Recommendations

RSMF5JT100R (Stackpole Electronics Inc): This upgrade substitute provides identical electrical specifications with increased power rating (5W vs 3W). Both parts are manufactured by Stackpole Electronics Inc, share the same series lineage, and maintain identical operating temperature range and temperature coefficient. ROHS3 compliance and REACH status are equivalent. This substitute is suitable for applications requiring additional thermal headroom or where higher power dissipation margins are beneficial.

ROX3SJ100R (TE Connectivity Passive Product): This substitute maintains the original 3W power rating and metal oxide film composition. Both parts are Active in product status and ROHS3 compliant. The ROX3SJ100R operates within -55°C to 200°C, which is narrower than the RSF3JT100R (-55°C to 235°C) by 35°C at the upper limit. Temperature coefficient is ±350ppm/°C versus ±200ppm/°C. Physical dimensions differ slightly (5.50mm x 16.00mm vs 6.00mm x 17.50mm). This substitute is suitable for applications where the reduced upper temperature limit and different dimensional profile are acceptable.

Frequently Asked Questions (FAQ)

Q: Can RSMF5JT100R replace RSF3JT100R in all applications?

A: Yes. The RSMF5JT100R maintains identical resistance, tolerance, composition, and operating temperature range. The 5W power rating is a superset of the 3W requirement, providing additional thermal margin without affecting circuit performance.

Q: What is the primary difference between RSF3JT100R and ROX3SJ100R?

A: Both are 100 Ohms ±5% 3W metal oxide film axial resistors. The ROX3SJ100R has a maximum operating temperature of 200°C (versus 235°C) and a higher temperature coefficient (±350ppm/°C versus ±200ppm/°C). Physical dimensions are also slightly different.

Q: Are there packaging format differences between these substitutes?

A: Yes. RSF3JT100R and RSMF5JT100R are supplied in Tape & Reel (TR) format. ROX3SJ100R is supplied in Cut Tape (CT) format. Packaging format does not affect electrical or mechanical compatibility for through-hole mounting applications.

Q: Do all three parts meet current compliance requirements?

A: Yes. RSF3JT100R, RSMF5JT100R, and ROX3SJ100R are all ROHS3 compliant and REACH unaffected.

Q: Which substitute should be selected for high-temperature applications?

A: RSF3JT100R and RSMF5JT100R both support -55°C to 235°C. ROX3SJ100R is limited to -55°C to 200°C. For applications requiring operation above 200°C, RSF3JT100R or RSMF5JT100R must be used.