RSF2JB91R0 Equivalent & Substitute Parts

Part Overview

The RSF2JB91R0 is a 91 Ohms ±5% 2W 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 2-watt range. The part is currently active in production with 928 pieces in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

RSF2JB91R0

Stackpole Electronics IncIn Stock: 1003RSF2JB91R0 Datasheet

Current PartRFQ

RSMF2JT91R0

Stackpole Electronics IncIn Stock: 3456RSMF2JT91R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF2JB91R0 is determined by strict equivalence across the following parameters: resistance value (91 Ohms), tolerance (±5%), power rating (2W), composition (metal oxide film), package type (axial), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 235°C), and regulatory compliance (ROHS3). The RSMF2JT91R0 qualifies as a direct substitute because it maintains all critical electrical and mechanical specifications. Variations in physical dimensions, packaging format (bulk versus cut tape), and surface treatment (flame retardant versus flame proof) do not affect functional equivalence in circuit applications where the RSF2JB91R0 is specified.

Parameter Comparison

Engineering Selection Recommendations

The RSMF2JT91R0 is a qualified substitute for the RSF2JB91R0 based on complete electrical and mechanical parameter equivalence. Both parts are manufactured by Stackpole Electronics Inc, maintain ROHS3 compliance, and are classified as active products. The substitute part is available in cut tape packaging with higher inventory (3434 pieces) compared to the bulk-packaged main part. Selection between these parts should be based on packaging requirements and supply chain availability rather than functional performance, as all critical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT91R0 be used as a direct replacement for RSF2JB91R0 in production assemblies?

A: Yes. Both parts share identical electrical specifications (91 Ohms, ±5%, 2W), composition (metal oxide film), temperature characteristics (±200ppm/°C, -55°C ~ 235°C operating range), and regulatory compliance (ROHS3). Functional performance in circuit applications is equivalent.

Q: What is the difference between the RSF and RSMF series designations?

A: The series designation reflects internal Stackpole product line organization. The RSF2JB91R0 belongs to the RSF series with bulk packaging, while the RSMF2JT91R0 belongs to the RSMF series with cut tape packaging. Electrical and mechanical specifications remain identical.

Q: Are there dimensional differences between these parts?

A: Yes. The RSF2JB91R0 measures 0.217" diameter × 0.591" length (5.50mm × 15.00mm), while the RSMF2JT91R0 measures 0.177" diameter × 0.433" length (4.50mm × 11.00mm). Both are axial package types suitable for through-hole mounting. Dimensional differences do not affect electrical performance or circuit compatibility.

Q: What packaging formats are available?

A: The RSF2JB91R0 is supplied in bulk packaging with 928 pieces in stock. The RSMF2JT91R0 is supplied in cut tape (CT) format with 3434 pieces in stock. Selection depends on assembly process requirements and inventory needs.

Q: Are both parts ROHS3 compliant?

A: Yes. Both RSF2JB91R0 and RSMF2JT91R0 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.