RSF2JB1R00 Equivalent & Substitute Parts

Part Overview

The RSF2JB1R00 is a 1 Ohm ±5% 2W through-hole axial resistor manufactured by Stackpole Electronics Inc. It features metal oxide film composition with flame retardant coating and safety characteristics. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

RSF2JB1R00

Stackpole Electronics IncIn Stock: 1077RSF2JB1R00 Datasheet

Current PartRFQ

RSF2JT1R00

Stackpole Electronics IncIn Stock: 14959RSF2JT1R00 Datasheet

DirectRFQ

RSMF3JT1R00

Stackpole Electronics IncIn Stock: 1841RSMF3JT1R00 Datasheet

UpgradeRFQ

RSMF2JT1R00

Stackpole Electronics IncIn Stock: 37133RSMF2JT1R00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: resistance value (1 Ohms), tolerance (±5%), composition (metal oxide film), package type (axial), and operating temperature range (-55°C ~ 235°C). Power rating may vary within the acceptable range for the application. All substitute parts maintain ROHS3 compliance and the same temperature coefficient specification.

The identified substitutes are grouped as follows:

Direct Substitute (Packaging Variant): RSF2JT1R00 maintains identical electrical specifications and differs only in packaging format (Cut Tape vs. Bulk).

Upgrade Substitute (Higher Power Rating): RSMF3JT1R00 provides increased power capacity (3W vs. 2W) with enhanced flame proof characteristics, suitable for applications requiring higher thermal margin.

Manufacturer Recommended Substitute: RSMF2JT1R00 matches the 2W power rating with flame proof construction and represents the current production equivalent with modified physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original RSF2JB1R00 specification.

RSF2JT1R00 is the direct electrical equivalent, differing only in supply packaging format. Selection is appropriate when Cut Tape packaging is preferred over Bulk.

RSMF3JT1R00 provides enhanced thermal performance through increased power rating (3W) and upgraded flame proof characteristics. This substitute is suitable for applications where thermal margin improvement is beneficial without circuit redesign.

RSMF2JT1R00 is the manufacturer-recommended current production equivalent. It maintains 2W power rating and flame proof construction with reduced physical dimensions (4.50mm x 11.00mm vs. 5.50mm x 15.00mm). PCB layout verification is required due to dimensional change.

Frequently Asked Questions (FAQ)

Q: Can RSF2JT1R00 be used as a direct replacement for RSF2JB1R00?

A: Yes. Both parts share identical electrical specifications (1 Ohm, ±5%, 2W, metal oxide film) and physical dimensions. The difference is packaging format: RSF2JB1R00 is supplied in Bulk, while RSF2JT1R00 is supplied in Cut Tape.

Q: What is the difference between flame retardant and flame proof construction?

A: Both designations indicate safety features. Flame proof construction (RSMF series) represents an enhanced safety classification compared to flame retardant coating (RSF series). Both meet the operating temperature and compliance requirements.

Q: Is RSMF3JT1R00 compatible with a 2W circuit design?

A: Yes. RSMF3JT1R00 is rated for 3W operation, which exceeds the 2W requirement. The higher power rating provides additional thermal margin and does not create incompatibility. Electrical specifications (resistance, tolerance, temperature coefficient) remain identical.

Q: Will RSMF2JT1R00 fit in the same PCB footprint as RSF2JB1R00?

A: No. RSMF2JT1R00 has reduced dimensions (4.50mm x 11.00mm vs. 5.50mm x 15.00mm). PCB layout and component placement must be verified before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RSF2JT1R00, RSMF3JT1R00, and RSMF2JT1R00 are all ROHS3 compliant, matching the original RSF2JB1R00 specification.