SR1218KK-072K2L Equivalent & Substitute Parts

Part Overview

The SR1218KK-072K2L is a 2.2 kOhms ±10% 1W chip resistor manufactured by YAGEO in Wide 1812 (4532 Metric) package format. This thick film resistor is designed for automotive applications with AEC-Q200 qualification and pulse withstanding capability. The part is currently in active production status with 987 pieces available in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

SR1218KK-072K2L

YAGEOIn Stock: 1067SR1218KK-072K2L Datasheet

Current PartRFQ

RCL12182K20JNEK

Vishay DaleIn Stock: 2869RCL12182K20JNEK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SR1218KK-072K2L is determined by the following critical parameters:

• Resistance value: 2.2 kOhms (exact match required)
• Power rating: 1W (exact match required)
• Package format: Wide 1812 (4532 Metric), 1218 (exact match required)
• Operating temperature range: -55°C ~ 155°C (minimum requirement)
• Automotive qualification: AEC-Q200 (required for automotive applications)
• Composition: Thick Film (required for this product category)
• RoHS compliance: ROHS3 Compliant (required)

The RCL12182K20JNEK from Vishay Dale meets all critical substitution criteria. While tolerance differs (±5% versus ±10%), this represents improved specification performance and does not prevent substitution. Temperature coefficient variation (±200ppm/°C versus ±100ppm/°C) and minor dimensional differences remain within acceptable mechanical compatibility for the Wide 1812 package footprint.

Parameter Comparison

Engineering Selection Recommendations

Both the SR1218KK-072K2L and RCL12182K20JNEK are active production components with full AEC-Q200 automotive qualification and ROHS3 compliance. The RCL12182K20JNEK provides tighter tolerance specification (±5%) compared to the original part (±10%), which may offer improved circuit performance in applications requiring higher precision. Both components maintain identical operating temperature range and moisture sensitivity classification. Selection between these parts should be based on design requirements for tolerance specification and component availability.

Frequently Asked Questions (FAQ)

Q: Can the RCL12182K20JNEK replace the SR1218KK-072K2L in automotive applications?

A: Yes. Both components carry AEC-Q200 automotive qualification, operate across the identical temperature range (-55°C ~ 155°C), and are packaged in the Wide 1812 (4532 Metric) format with matching footprint compatibility.

Q: What is the significance of the tolerance difference between ±10% and ±5%?

A: The RCL12182K20JNEK tolerance of ±5% represents a tighter specification than the original ±10% tolerance. This does not prevent substitution; rather, it indicates improved resistance value accuracy that may benefit circuit performance in precision-sensitive applications.

Q: Are there mechanical compatibility concerns with the dimensional differences?

A: No. The dimensional variations (0.122" versus 0.126" length and 0.026" versus 0.024" height) remain within the Wide 1812 (4532 Metric) package specification and do not affect PCB footprint compatibility or assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SR1218KK-072K2L and RCL12182K20JNEK are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level).

Q: What is the difference in temperature coefficient between these parts?

A: The SR1218KK-072K2L has a temperature coefficient of ±100ppm/°C, while the RCL12182K20JNEK has ±200ppm/°C. Both values are acceptable for thick film chip resistor applications and do not prevent substitution in standard circuit designs.