RSF2JB240R Equivalent & Substitute Parts

Part Overview

The RSF2JB240R is a 240 Ohms ±5% 2W through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film axial resistor features flame retardant coating and safety design, operating across a temperature range of -55°C to 235°C. The part is currently active in production with 941 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

RSF2JB240R

Stackpole Electronics IncIn Stock: 955RSF2JB240R Datasheet

Current PartRFQ

RSF2JT240R

Stackpole Electronics IncIn Stock: 990RSF2JT240R Datasheet

DirectRFQ

RSMF2JT240R

Stackpole Electronics IncIn Stock: 15717RSMF2JT240R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF2JB240R is determined by strict equivalence across the following critical parameters: resistance value (240 Ohms), tolerance (±5%), power rating (2W), composition (metal oxide film), package type (axial), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 235°C). All identified substitutes maintain these core electrical and mechanical specifications, ensuring functional interchangeability in circuit applications.

The RSF2JT240R serves as a direct electrical equivalent, differing only in packaging format (Cut Tape versus Bulk). The RSMF2JT240R represents a manufacturer-recommended upgrade within the same electrical specification class, offering improved flame-proof characteristics and a more compact physical footprint while maintaining all critical electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

All three part numbers maintain identical electrical specifications and are ROHS3 compliant, ensuring regulatory compliance across applications. Selection between these substitutes should be based on packaging requirements and physical space constraints.

The RSF2JB240R and RSF2JT240R are electrically and mechanically identical, with the distinction limited to procurement packaging (Bulk versus Cut Tape). These parts are interchangeable for applications where the standard 5.50mm diameter and 15.00mm length dimensions are acceptable.

The RSMF2JT240R is the manufacturer-recommended option, offering enhanced flame-proof characteristics compared to the flame-retardant coating of the RSF series. This part features a more compact physical footprint (4.50mm diameter x 11.00mm length) while maintaining all critical electrical parameters. The RSMF2JT240R is suitable for space-constrained applications and provides superior availability with 15,653 pieces in stock.

Frequently Asked Questions (FAQ)

Q: Can RSF2JT240R be used as a direct replacement for RSF2JB240R?

A: Yes. Both parts are electrically and mechanically identical 240 Ohms ±5% 2W metal oxide film axial resistors. The only difference is packaging format: RSF2JB240R is supplied in Bulk, while RSF2JT240R is supplied in Cut Tape. They are functionally interchangeable in all circuit applications.

Q: What are the physical differences between RSF2JB240R and RSMF2JT240R?

A: The RSMF2JT240R has a more compact physical footprint at 4.50mm diameter x 11.00mm length, compared to the RSF2JB240R at 5.50mm diameter x 15.00mm length. All electrical specifications remain identical. The RSMF2JT240R features flame-proof characteristics versus the flame-retardant coating of the RSF series.

Q: Are all three parts ROHS3 compliant?

A: Yes. RSF2JB240R, RSF2JT240R, and RSMF2JT240R are all ROHS3 compliant and suitable for applications requiring regulatory compliance.

Q: Which part should be selected for new designs?

A: The RSMF2JT240R is the manufacturer-recommended option for new designs, offering improved flame-proof characteristics, more compact dimensions, and superior inventory availability. It maintains all electrical specifications required for 240 Ohms ±5% 2W applications.

Q: Can RSMF2JT240R be used in existing PCB layouts designed for RSF2JB240R?

A: Physical compatibility depends on PCB layout specifications. The RSMF2JT240R's more compact dimensions (4.50mm x 11.00mm versus 5.50mm x 15.00mm) may allow installation in tighter spaces, but PCB hole spacing and component clearance must be verified against the specific layout design.