ERG-1SJ331 Equivalent & Substitute Parts

Part Overview

The ERG-1SJ331 is a 330 Ohms ±5% 1W axial through-hole resistor manufactured by Panasonic Electronic Components. This metal oxide film resistor features flame-proof and safety characteristics, designed for applications requiring reliable performance across a wide temperature range from -55°C to 235°C.

The ERG-1SJ331 is classified as obsolete. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this resistor specification is required.

Substiute Parts

ERG-1SJ331

Panasonic Electronic ComponentsIn Stock: 1205ERG-1SJ331 Datasheet

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RSMF1JB330R

Stackpole Electronics IncIn Stock: 957RSMF1JB330R Datasheet

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RSMF1JT330R

Stackpole Electronics IncIn Stock: 12118RSMF1JT330R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERG-1SJ331 are qualified based on the following electrical and mechanical parameters:

• Resistance value: 330 Ohms
• Tolerance: ±5%
• Power rating: 1W
• Composition: Metal Oxide Film
• Package configuration: Axial through-hole
• Features: Flame Proof, Safety characteristics
• Compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The substitute parts RSMF1JB330R and RSMF1JT330R, both manufactured by Stackpole Electronics Inc, meet these core electrical specifications. Both parts are classified as active products with current inventory availability, ensuring long-term supply chain reliability compared to the obsolete ERG-1SJ331.

Parameter Comparison

Engineering Selection Recommendations

Both RSMF1JB330R and RSMF1JT330R are direct electrical equivalents to the ERG-1SJ331. Selection between these two Stackpole alternatives depends on packaging requirements:

RSMF1JT330R is supplied in Cut Tape (CT) packaging with 12,023 pieces in stock, suitable for automated assembly processes and high-volume production environments.

RSMF1JB330R is supplied in Bulk packaging with 898 pieces in stock, suitable for manual assembly, prototyping, and lower-volume applications.

Both substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification, ensuring regulatory alignment with the original ERG-1SJ331. The transition from the obsolete Panasonic part to either active Stackpole equivalent ensures continued component availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can RSMF1JB330R and RSMF1JT330R be used interchangeably with ERG-1SJ331?

A: Yes. Both Stackpole parts meet the core electrical specifications: 330 Ohms resistance, ±5% tolerance, 1W power rating, metal oxide film composition, and axial package configuration. The difference between them is packaging format only.

Q: What is the difference between RSMF1JB330R and RSMF1JT330R?

A: Both parts are electrically identical. RSMF1JB330R is supplied in Bulk packaging, while RSMF1JT330R is supplied in Cut Tape (CT) packaging. Choose based on your assembly process requirements.

Q: Are there physical size differences between the ERG-1SJ331 and the Stackpole substitutes?

A: Yes. The ERG-1SJ331 has a diameter of 0.110" (2.80mm), while both RSMF1JB330R and RSMF1JT330R have a diameter of 0.126" (3.20mm). Both maintain the same 0.354" (9.00mm) length. Verify PCB layout clearance before substitution.

Q: What is the temperature coefficient difference, and does it affect substitution?

A: The ERG-1SJ331 has a temperature coefficient of ±350ppm/°C, while both Stackpole substitutes have ±200ppm/°C. The Stackpole parts exhibit better temperature stability. The operating temperature range for Stackpole parts is -55°C to 200°C, compared to -55°C to 235°C for the Panasonic part. Confirm your application's maximum operating temperature requirement.

Q: Are both substitute parts compliant with current regulations?

A: Yes. Both RSMF1JB330R and RSMF1JT330R are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes, matching the regulatory status of the original ERG-1SJ331.