ERG-3SJ331 Equivalent & Substitute Parts

Part Overview

The ERG-3SJ331 is a 330 Ohm ±5% 3W axial through-hole resistor manufactured by Panasonic Electronic Components. This metal oxide film resistor features flame-proof and safety characteristics, with a temperature coefficient of ±300ppm/°C and operating range of -55°C to 235°C. The product is currently obsolete, making equivalent substitutes necessary for ongoing design support and component sourcing.

Substiute Parts

ERG-3SJ331

Panasonic Electronic ComponentsIn Stock: 973ERG-3SJ331 Datasheet

Current PartRFQ

RSS3W330RJTB

TE Connectivity Passive ProductIn Stock: 851RSS3W330RJTB Datasheet

DirectRFQ

RSMF3JB330R

Stackpole Electronics IncIn Stock: 1153RSMF3JB330R Datasheet

UpgradeRFQ

RSMF3JT330R

Stackpole Electronics IncIn Stock: 1180RSMF3JT330R Datasheet

UpgradeRFQ

ROX3SJ330R

TE Connectivity Passive ProductIn Stock: 99991ROX3SJ330R Datasheet

SimilarRFQ

RSF3JT330R

Stackpole Electronics IncIn Stock: 941RSF3JT330R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERG-3SJ331 is determined by the following core parameters: resistance value (330 Ohms), tolerance (±5%), power rating (3W), composition (metal oxide film), and axial package configuration. All substitute parts must maintain these electrical specifications and physical form factor.

The substitute parts are grouped into three categories based on their relationship to the original part:

Direct Substitutes maintain identical electrical and mechanical specifications with active product status and current availability.

Upgrade Substitutes offer improved or equivalent performance characteristics while maintaining core electrical parameters and active production status.

Similar Substitutes provide functional equivalence with minor variations in secondary parameters such as temperature coefficient, operating temperature range, or physical dimensions, while preserving the critical electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitute - RSS3W330RJTB (TE Connectivity Passive Product)

The RSS3W330RJTB is the primary direct substitute for the ERG-3SJ331. It maintains identical electrical specifications (330 Ohms, ±5%, 3W) and metal oxide film composition with axial packaging. This part is ROHS3 compliant and currently in active production with 800 units in stock. The operating temperature range is -55°C to 155°C, which is narrower than the original part. This substitute is suitable for applications operating within this temperature window.

Upgrade Substitutes - RSMF3JB330R and RSMF3JT330R (Stackpole Electronics Inc)

Both RSMF series parts are active production alternatives with identical electrical specifications and extended operating temperature range (-55°C to 235°C), matching the original part's upper temperature limit. The RSMF3JB330R is supplied in bulk packaging, while RSMF3JT330R is supplied in tape and reel format. Both feature a superior temperature coefficient of ±200ppm/°C compared to the original ±300ppm/°C, providing improved stability. Both are ROHS3 compliant with REACH unaffected status. Physical dimensions match the original part exactly (5.50mm x 15.00mm).

Similar Substitutes - ROX3SJ330R and RSF3JT330R

The ROX3SJ330R (TE Connectivity) maintains core electrical specifications with a slightly higher temperature coefficient (±350ppm/°C) and operating range of -55°C to 200°C. Physical dimensions are 5.50mm x 16.00mm, with 1mm additional length. This part is ROHS3 compliant and has the highest inventory availability (99,930 units).

The RSF3JT330R (Stackpole Electronics Inc) provides functional equivalence with identical electrical specifications and extended temperature range (-55°C to 235°C). It features flame retardant coating rather than flame-proof characteristics. Physical dimensions are 6.00mm x 17.50mm, representing the largest form factor among substitutes. This part is ROHS3 compliant with REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can I use RSS3W330RJTB as a direct replacement for ERG-3SJ331?

A: Yes, the RSS3W330RJTB is electrically and mechanically compatible with identical resistance, tolerance, power rating, and axial package configuration. However, its operating temperature range (-55°C to 155°C) is narrower than the original part. Use this substitute only if your application operates within this temperature window.

Q: What is the difference between RSMF3JB330R and RSMF3JT330R?

A: Both parts are electrically identical with the same specifications and performance characteristics. The primary difference is packaging: RSMF3JB330R is supplied in bulk format, while RSMF3JT330R is supplied in tape and reel format. Select based on your assembly process requirements.

Q: Why do some substitutes have different physical dimensions?

A: While all substitutes maintain the same electrical specifications and axial package type, minor dimensional variations exist. ROX3SJ330R is 16.00mm in length (1mm longer), and RSF3JT330R is 6.00mm in diameter and 17.50mm in length. These variations may affect PCB layout and mechanical clearance. Verify board space availability before selection.

Q: Are all substitutes RoHS compliant?

A: Yes, all listed substitute parts are ROHS3 compliant, matching the original ERG-3SJ331 compliance status.

Q: Which substitute offers the best temperature stability?

A: The RSMF3JB330R and RSMF3JT330R offer the best temperature stability with a temperature coefficient of ±200ppm/°C, compared to the original ±300ppm/°C and other substitutes.

Q: Can I use RSF3JT330R if my design requires flame-proof characteristics?

A: No. The RSF3JT330R features flame retardant coating, which differs from the flame-proof characteristic of the original ERG-3SJ331. If flame-proof rating is a design requirement, select RSMF3JB330R, RSMF3JT330R, RSS3W330RJTB, or ROX3SJ330R instead.