ERA-1ARB112C Equivalent & Substitute Parts

Part Overview

The ERA-1ARB112C is a 1.1 kOhms ±0.1% thin film chip resistor in 0201 package (0603 Metric) rated at 0.05W (1/20W) power dissipation. This component is manufactured by Panasonic Electronic Components and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts with compatible electrical and mechanical specifications is necessary for design continuity and procurement planning.

Substiute Parts

ERA-1ARB112C

Panasonic Electronic ComponentsIn Stock: 942ERA-1ARB112C Datasheet

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ERA-1ARW112C

Panasonic Electronic ComponentsIn Stock: 15672ERA-1ARW112C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERA-1ARB112C is determined by the following critical parameters:

• Resistance Value: Must be 1.1 kOhms
• Package Type: Must be 0201 (0603 Metric) for mechanical and electrical compatibility
• Power Rating: Must be 0.05W (1/20W) or higher
• Composition: Thin film construction required for temperature stability
• Temperature Coefficient: ±10ppm/°C or better
• Operating Temperature Range: Must support -55°C to 155°C
• RoHS Compliance: ROHS3 Compliant status required

The ERA-1ARW112C qualifies as a direct substitute. While it maintains identical resistance value, package, power rating, temperature coefficient, and operating range, it offers improved tolerance specification (±0.05% versus ±0.1%), making it suitable for applications requiring tighter tolerance control without compromising any electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ERA-1ARW112C is a direct functional equivalent to the ERA-1ARB112C. Both components are manufactured by Panasonic Electronic Components within the ERA-1A series and maintain identical electrical and mechanical specifications with the exception of tolerance rating. The ERA-1ARW112C provides superior tolerance performance (±0.05% versus ±0.1%) while maintaining all other critical parameters including package dimensions, power rating, temperature coefficient, and operating temperature range.

Both parts carry ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility. The substitute part is suitable for direct replacement in applications where the original part is no longer available.

Frequently Asked Questions (FAQ)

Q: Can ERA-1ARW112C replace ERA-1ARB112C in existing designs?

A: Yes. The ERA-1ARW112C is electrically and mechanically compatible with ERA-1ARB112C. Both components share identical resistance value (1.1 kOhms), package type (0201), power rating (0.05W), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C to 155°C). The substitute offers tighter tolerance (±0.05% versus ±0.1%), which is a performance improvement.

Q: Are there any package or footprint differences?

A: No. Both parts use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints and assembly processes remain unchanged.

Q: What is the significance of the tolerance difference?

A: The ERA-1ARW112C tolerance of ±0.05% is tighter than the ERA-1ARB112C tolerance of ±0.1%. This means the substitute part maintains resistance values within a narrower range around the nominal 1.1 kOhms specification, providing improved accuracy for precision circuit applications.

Q: Are both parts RoHS compliant?

A: Yes. Both ERA-1ARB112C and ERA-1ARW112C are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory requirements.

Q: Why are both parts listed as obsolete?

A: Both components are classified as obsolete by Panasonic Electronic Components. However, inventory availability exists for both parts. Designers should evaluate long-term sourcing strategy and consider alternative current-production resistor options for new designs requiring extended product lifecycle support.