ERG-1SJ112 Equivalent & Substitute Parts

Part Overview

The ERG-1SJ112 is a 1.1 kOhms ±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 and new design implementations.

Substiute Parts

ERG-1SJ112

Panasonic Electronic ComponentsIn Stock: 840ERG-1SJ112 Datasheet

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RSMF1JB1K10

Stackpole Electronics IncIn Stock: 1123RSMF1JB1K10 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERG-1SJ112 is determined by strict equivalence across the following critical parameters:

• Resistance Value: 1.1 kOhms (exact match required)
• Tolerance: ±5% (electrical accuracy specification)
• Power Rating: 1W (thermal dissipation capability)
• Composition: Metal Oxide Film (material specification)
• Package Type: Axial (mechanical form factor)
• Features: Flame Proof, Safety (safety certification requirements)
• Compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The RSMF1JB1K10 from Stackpole Electronics Inc meets all critical substitution criteria, with the exception of operating temperature range upper limit (200°C vs. 235°C) and temperature coefficient specification (±200ppm/°C vs. ±350ppm/°C). These differences represent improvements in stability and reduced upper temperature operation, which do not preclude substitution in applications within the 200°C maximum operating window.

Parameter Comparison

Engineering Selection Recommendations

The RSMF1JB1K10 is the primary substitute for the obsolete ERG-1SJ112. Both components maintain identical electrical specifications (1.1 kOhms, ±5%, 1W) and composition (metal oxide film with flame-proof and safety features). Both are ROHS3 compliant and REACH unaffected, ensuring regulatory alignment.

The RSMF1JB1K10 is currently in active production status with 1079 units in stock, compared to the ERG-1SJ112's obsolete status with limited remaining inventory (732 units). The substitute offers improved temperature coefficient stability (±200ppm/°C) and operates within -55°C to 200°C, which covers the majority of industrial applications. The slight increase in physical diameter (0.126" vs. 0.110") must be evaluated for mechanical fit within the target application's PCB layout and component spacing constraints.

Frequently Asked Questions (FAQ)

Q: Can the RSMF1JB1K10 directly replace the ERG-1SJ112 in all applications?

A: The RSMF1JB1K10 is electrically equivalent for applications operating within -55°C to 200°C. Applications requiring operation above 200°C require alternative evaluation. Physical dimensions differ slightly (diameter 0.126" vs. 0.110"), necessitating PCB layout verification.

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

A: The RSMF1JB1K10 exhibits a lower temperature coefficient (±200ppm/°C vs. ±350ppm/°C), indicating superior resistance stability across temperature variations. This represents an improvement over the original specification.

Q: Are both components RoHS and REACH compliant?

A: Yes. Both the ERG-1SJ112 and RSMF1JB1K10 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the impact of the physical dimension difference?

A: The RSMF1JB1K10 has a larger diameter (3.20mm vs. 2.80mm) while maintaining the same axial length (9.00mm). Component spacing and PCB layout must accommodate the increased diameter to prevent mechanical interference.

Q: Why is the ERG-1SJ112 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The RSMF1JB1K10 from Stackpole Electronics Inc is an active production alternative meeting equivalent electrical and safety specifications.