RK73B1HTTC515G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC515G is a 5.1 MOhm thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for automotive applications with AEC-Q200 qualification. This 0201 package resistor delivers 0.05W power rating with ±2% tolerance and operates across -55°C to 155°C. The part is currently classified as "Not For New Designs," necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

RK73B1HTTC515G

KOA Speer Electronics, Inc.In Stock: 1237RK73B1HTTC515G Datasheet

Current PartRFQ

RK73B1HTTCM515G

KOA Speer Electronics, Inc.In Stock: 1008RK73B1HTTCM515G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC515G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (5.1 MOhms), tolerance (±2%), power rating (0.05W), and temperature coefficient (±200ppm/°C) must be identical.

Mechanical Parameters: Package designation (0201), physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and seated height (0.010" / 0.26mm) must match exactly.

Compliance & Ratings: AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating are mandatory for substitution in automotive applications.

Series Continuity: Parts must belong to the RK73B series to ensure manufacturing consistency and performance predictability.

The substitute part RK73B1HTTCM515G meets all substitution criteria and represents the active production equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73B1HTTCM515G

The RK73B1HTTCM515G is the direct equivalent for the RK73B1HTTC515G. Both parts are manufactured by KOA Speer Electronics, Inc., and share identical electrical specifications, mechanical dimensions, and automotive compliance certifications. The critical distinction is product status: RK73B1HTTCM515G maintains Active status, whereas the original part is designated "Not For New Designs."

Compliance Verification: Both parts carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. These certifications ensure suitability for automotive circuit applications requiring high-reliability thick film resistors in 0201 package form factor.

Inventory Consideration: RK73B1HTTCM515G currently maintains 912 units in stock, providing adequate supply for production requirements.

Application Continuity: Direct substitution is supported for all applications where RK73B1HTTC515G was previously specified, with no circuit redesign or validation required due to complete parameter equivalence.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM515G replace RK73B1HTTC515G in existing designs?

A: Yes. RK73B1HTTCM515G is a direct equivalent with identical electrical and mechanical specifications. No circuit modifications are required.

Q: What is the significance of the product status difference?

A: RK73B1HTTC515G is marked "Not For New Designs," indicating it is in end-of-life phase. RK73B1HTTCM515G is Active status, confirming ongoing manufacturing and supply availability for current and future production.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts are 0201 package (0603 Metric) with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are interchangeable.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC515G and RK73B1HTTCM515G carry AEC-Q200 qualification and are suitable for automotive applications requiring high-reliability thick film resistors.

Q: Is there any difference in environmental compliance?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Environmental compliance is identical.

Q: What is the temperature coefficient specification?

A: Both parts specify ±200ppm/°C temperature coefficient across the -55°C to 155°C operating range, ensuring stable resistance performance across automotive temperature extremes.

Q: Are there packaging differences between these parts?

A: The main part is supplied in Tape & Reel (TR) packaging. The substitute part packaging information is not specified in available data. Confirm packaging requirements with supplier for procurement purposes.