RSMF2JB240R Equivalent & Substitute Parts

Part Overview

The RSMF2JB240R is a 240 Ohms ±5% 2W through hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film 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 ROHS3 compliance and is suitable for general-purpose electronic circuit applications. Substitute parts may be required due to packaging availability, inventory constraints, or specific application packaging requirements.

Substiute Parts

RSMF2JB240R

Stackpole Electronics IncIn Stock: 915RSMF2JB240R Datasheet

Current PartRFQ

RSMF2JT240R

Stackpole Electronics IncIn Stock: 15717RSMF2JT240R Datasheet

DirectRFQ

RSF2JT240R

Stackpole Electronics IncIn Stock: 990RSF2JT240R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSMF2JB240R is determined by the following critical parameters:

• Resistance value: 240 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 2W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 235°C (exact match required)
• Number of terminations: 2 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Variations in packaging format (Bulk versus Cut Tape) and physical dimensions do not affect electrical substitutability. The RSMF2JB240R (Bulk packaging) can be substituted with RSMF2JT240R (Cut Tape packaging) as both maintain identical electrical specifications. The RSF2JT240R represents an alternative series option with different physical dimensions but equivalent electrical performance.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status with ROHS3 compliance and REACH unaffected designation. The RSMF2JB240R and RSMF2JT240R are electrically and mechanically identical, differing only in packaging format (Bulk versus Cut Tape). Selection between these two should be based on procurement and assembly requirements.

The RSF2JT240R is manufacturer-recommended as an alternative and maintains all critical electrical specifications. The primary difference is the physical dimension increase (0.217" Dia x 0.591" L versus 0.177" Dia x 0.433" L) and the flame retardant coating feature instead of flame proof. This dimensional difference must be evaluated against available PCB space and mechanical constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT240R directly replace RSMF2JB240R?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, temperature coefficient, and operating temperature range. The only difference is packaging format (Cut Tape versus Bulk). No circuit modifications are required.

Q: What is the primary difference between RSMF2JB240R and RSF2JT240R?

A: The RSF2JT240R has larger physical dimensions (0.217" Dia x 0.591" L compared to 0.177" Dia x 0.433" L) and features flame retardant coating instead of flame proof construction. All electrical parameters remain identical. PCB layout space availability must be confirmed before substitution.

Q: Are all three parts RoHS compliant?

A: Yes. RSMF2JB240R, RSMF2JT240R, and RSF2JT240R are all ROHS3 compliant with REACH unaffected status.

Q: Does packaging format affect electrical performance?

A: No. Bulk and Cut Tape packaging formats do not affect electrical characteristics. Selection is based on assembly process requirements and inventory management.

Q: Can RSF2JT240R be used in space-constrained applications?

A: The RSF2JT240R has larger dimensions than RSMF2JB240R. PCB layout and mechanical clearance must be evaluated before substitution in space-constrained designs.