ERG-1SJ431 Equivalent & Substitute Parts

Part Overview

The ERG-1SJ431 is a 430 Ohm ±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 industrial temperature ranges. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance, repair, and redesign efforts.

Substiute Parts

ERG-1SJ431

Panasonic Electronic ComponentsIn Stock: 847ERG-1SJ431 Datasheet

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RSMF1JT430R

Stackpole Electronics IncIn Stock: 905RSMF1JT430R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERG-1SJ431 is determined by strict equivalence across the following critical parameters:

• Resistance value: 430 Ohms
• Tolerance: ±5%
• Power rating: 1W
• Composition: Metal Oxide Film
• Package configuration: Axial through-hole
• Safety and flame-proof characteristics
• RoHS3 compliance

The RSMF1JT430R from Stackpole Electronics Inc meets all these core requirements. While minor variations exist in temperature coefficient and maximum operating temperature, the substitute maintains functional equivalence for the specified resistance, tolerance, power dissipation, and safety characteristics.

Parameter Comparison

Engineering Selection Recommendations

The RSMF1JT430R is a direct functional substitute for the obsolete ERG-1SJ431. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The Stackpole part carries active product status, ensuring ongoing availability and supply chain reliability.

Physical dimensions differ slightly in diameter (0.110" versus 0.126"), which may require board layout verification for space-constrained applications. The substitute exhibits superior temperature coefficient stability (±200ppm/°C versus ±350ppm/°C), providing improved performance in precision circuits. The operating temperature maximum of 200°C for the substitute remains suitable for standard industrial applications, though designs requiring operation above 200°C should be evaluated against specific thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the RSMF1JT430R directly replace the ERG-1SJ431 in existing designs?

A: Yes. Both components share identical resistance, tolerance, power rating, composition, and safety characteristics. Physical dimensions differ slightly; verify board layout clearance before implementation.

Q: What is the significance of the temperature coefficient difference?

A: The RSMF1JT430R exhibits lower temperature coefficient drift (±200ppm/°C versus ±350ppm/°C). This represents improved stability across temperature variations and is advantageous for precision applications. No negative impact occurs in standard industrial circuits.

Q: Does the lower maximum operating temperature of the substitute affect compatibility?

A: The RSMF1JT430R operates to 200°C maximum, compared to 235°C for the original part. For applications operating below 200°C, no functional limitation exists. Designs requiring sustained operation above 200°C require thermal analysis against the substitute's specifications.

Q: Are packaging differences significant?

A: The original part uses standard axial packaging; the substitute is supplied in Tape & Reel format. Both maintain identical axial through-hole configuration suitable for PCB assembly. Reel packaging provides advantages for automated production environments.

Q: Do both parts meet current compliance standards?

A: Yes. Both ERG-1SJ431 and RSMF1JT430R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.