RSMF2JB100R Equivalent & Substitute Parts

Part Overview

The RSMF2JB100R is a 100 Ohms ±5% 2W through hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film axial resistor features flame proof and safety characteristics, designed for applications requiring reliable power dissipation in the 2W range. The part is currently active in production with 729 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs, particularly when packaging format or inventory availability differs from the primary part number.

Substiute Parts

RSMF2JB100R

Stackpole Electronics IncIn Stock: 826RSMF2JB100R Datasheet

Current PartRFQ

RSMF2JT100R

Stackpole Electronics IncIn Stock: 7338RSMF2JT100R Datasheet

DirectRFQ

RSF2JT100R

Stackpole Electronics IncIn Stock: 10637RSF2JT100R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSMF2JB100R is determined by strict equivalence across the following parameters: resistance value (100 Ohms), tolerance (±5%), power rating (2W), composition (metal oxide film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 235°C), axial package configuration, and compliance certifications (ROHS3, REACH Unaffected, EAR99).

The identified substitutes maintain these core electrical and mechanical specifications. Variations in packaging format (bulk versus cut tape) and physical dimensions do not affect electrical performance or circuit compatibility. The RSMF2JT100R differs only in packaging presentation. The RSF2JT100R represents a manufacturer-recommended alternative within the same series family, with identical electrical characteristics but different physical dimensions (0.217" Dia x 0.591" L versus 0.177" Dia x 0.433" L) and flame retardant coating instead of flame proof construction.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and full compliance with ROHS3 and REACH regulations. Selection between RSMF2JB100R and RSMF2JT100R is determined by procurement requirements: bulk packaging versus cut tape format. Both parts are identical in electrical performance and physical dimensions, making them directly interchangeable at the circuit level.

The RSF2JT100R is a manufacturer-recommended alternative that maintains all critical electrical specifications. The increased physical dimensions (0.217" Dia x 0.591" L) require verification of available board space and component placement constraints. The flame retardant coating construction differs from the flame proof specification of the primary part; this distinction should be evaluated against specific application safety requirements and regulatory standards applicable to the end product.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT100R be used as a direct replacement for RSMF2JB100R?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (cut tape versus bulk). No circuit modifications are required.

Q: What is the difference between RSMF2JB100R and RSF2JT100R?

A: Both maintain identical electrical specifications (100 Ohms, ±5%, 2W, metal oxide film, ±200ppm/°C, -55°C ~ 235°C). Physical dimensions differ: RSMF2JB100R is 0.177" Dia x 0.433" L, while RSF2JT100R is 0.217" Dia x 0.591" L. The flame retardant coating of RSF2JT100R differs from the flame proof construction of RSMF2JB100R.

Q: Are dimensional differences between RSMF2JB100R and RSF2JT100R significant for PCB layout?

A: Yes. The RSF2JT100R is larger in both diameter and length. Board space availability and component placement must be verified before substitution. Hole spacing and lead length compatibility should be confirmed for your specific application.

Q: Do all three parts meet the same compliance standards?

A: Yes. RSMF2JB100R, RSMF2JT100R, and RSF2JT100R are all ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: Which part should be selected for new designs?

A: Selection depends on procurement strategy and application constraints. RSMF2JT100R offers higher inventory availability (7319 units) in cut tape format. RSF2JT100R provides the largest inventory (10579 units) but requires dimensional verification. RSMF2JB100R is suitable when bulk packaging is preferred.