RSF1JB330R Equivalent & Substitute Parts

Part Overview

The RSF1JB330R is a 330 Ohms ±5% 1W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, with an operating temperature range of -55°C to 235°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications.

Substiute Parts

RSF1JB330R

Stackpole Electronics IncIn Stock: 923RSF1JB330R Datasheet

Current PartRFQ

RSMF2JT330R

Stackpole Electronics IncIn Stock: 8744RSMF2JT330R Datasheet

UpgradeRFQ

RSMF1JT330R

Stackpole Electronics IncIn Stock: 12118RSMF1JT330R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: resistance value (330 Ohms), tolerance (±5%), composition (metal oxide film), and axial package type. The substitute parts identified maintain these core electrical and mechanical specifications.

RSMF2JT330R qualifies as an upgrade substitute with increased power rating (2W versus 1W), maintaining all other electrical parameters and axial package compatibility.

RSMF1JT330R qualifies as a manufacturer-recommended substitute with identical power rating (1W) and electrical specifications, offering improved flame-proof design over the original flame retardant coating.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and ROHS3 compliance. Selection between RSF1JB330R and its substitutes depends on application requirements:

RSMF2JT330R provides higher power dissipation capability (2W) while maintaining identical resistance and tolerance specifications. This part is suitable for applications requiring increased thermal headroom.

RSMF1JT330R matches the original 1W power rating with flame-proof design enhancement over the flame retardant coating of RSF1JB330R. The operating temperature maximum is reduced to 200°C compared to 235°C for the original part. Physical dimensions are smaller (0.126" Dia x 0.354" L versus 0.177" Dia x 0.433" L).

Frequently Asked Questions (FAQ)

Can RSMF2JT330R replace RSF1JB330R in any application? RSMF2JT330R maintains identical electrical specifications (330 Ohms, ±5%, metal oxide film composition) and axial package type. The 2W power rating is a superset of the original 1W rating, making it electrically compatible. Physical dimensions are identical, allowing direct board-level substitution.

What is the difference between flame retardant and flame-proof coatings? Both RSF1JB330R and RSMF1JT330R are metal oxide film resistors with safety features. The RSF series uses flame retardant coating, while the RSMF series uses flame-proof design. Both meet ROHS3 compliance requirements.

Does RSMF1JT330R have a lower maximum operating temperature? RSMF1JT330R specifies a maximum operating temperature of 200°C compared to 235°C for RSF1JB330R. Applications requiring operation above 200°C must use RSF1JB330R or RSMF2JT330R.

Are physical dimensions identical across all three parts? RSF1JB330R and RSMF2JT330R share identical dimensions (0.177" Dia x 0.433" L). RSMF1JT330R has smaller dimensions (0.126" Dia x 0.354" L), which may affect board layout in space-constrained designs.

What packaging formats are available? RSF1JB330R is supplied in Bulk packaging. RSMF2JT330R and RSMF1JT330R are supplied in Cut Tape (CT) packaging, suitable for automated assembly processes.