RC1218JK-071R2L Equivalent & Substitute Parts

Part Overview

The RC1218JK-071R2L is a 1.2 Ohm ±5% 1W thick film chip resistor manufactured by YAGEO in the Wide 1812 (4532 Metric) package. This component is classified as Active product status with moisture resistant properties and ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

RC1218JK-071R2L

YAGEOIn Stock: 840RC1218JK-071R2L Datasheet

Current PartRFQ

AC1218FK-071R2L

YAGEOIn Stock: 4690AC1218FK-071R2L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1218JK-071R2L is determined by the following criteria:

• Identical resistance value: 1.2 Ohms
• Equal or superior tolerance specification
• Identical power rating: 1W
• Identical package footprint: Wide 1812 (4532 Metric), 1218
• Identical composition: Thick Film
• Matching or superior temperature coefficient: ±200ppm/°C
• Operating temperature range encompassing or matching: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS3 compliance maintained

The AC1218FK-071R2L meets all substitution criteria with an upgrade in tolerance specification from ±5% to ±1%, while maintaining all other electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both RC1218JK-071R2L and AC1218FK-071R2L are Active status components with ROHS3 compliance and REACH Unaffected designation. The AC1218FK-071R2L provides an upgrade path with tighter tolerance specification (±1% versus ±5%) while maintaining identical electrical performance, mechanical compatibility, and environmental ratings. The AC1218FK-071R2L includes AEC-Q200 automotive qualification, which represents an additional compliance certification not present in the RC1218JK-071R2L.

Frequently Asked Questions (FAQ)

Q: Can AC1218FK-071R2L directly replace RC1218JK-071R2L in existing designs?

A: Yes. Both components share identical resistance value, power rating, package footprint, temperature coefficient, and operating temperature range. The AC1218FK-071R2L features improved tolerance specification and maintains all mechanical and environmental compatibility requirements.

Q: What is the significance of the tolerance difference between ±5% and ±1%?

A: Tolerance defines the acceptable deviation from the nominal resistance value. The AC1218FK-071R2L's ±1% tolerance provides tighter resistance accuracy compared to the RC1218JK-071R2L's ±5% tolerance. This upgrade does not affect physical compatibility or thermal performance.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components are packaged in the Wide 1812 (4532 Metric) format with identical dimensions: 0.122" L x 0.181" W (3.10mm x 4.60mm) and maximum seated height of 0.026" (0.65mm).

Q: What does AEC-Q200 qualification on the AC1218FK-071R2L indicate?

A: AEC-Q200 is an automotive industry standard qualification. The AC1218FK-071R2L meets this specification, indicating suitability for automotive applications. The RC1218JK-071R2L does not carry this designation.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both components have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.