Equivalent & Substitute Parts for RK73H1HTTC2491D

Part Overview

The RK73H1HTTC2491D is a 2.49 kOhm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for automotive applications with AEC-Q200 qualification. This 0201 package component delivers 0.05W (1/20W) power rating with moisture-resistant construction and operates across -55°C to 155°C temperature range.

The RK73H1HTTC2491D carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for existing applications and legacy system support.

Substiute Parts

RK73H1HTTC2491D

KOA Speer Electronics, Inc.In Stock: 853RK73H1HTTC2491D Datasheet

Current PartRFQ

RK73H1HTTCM2491D

KOA Speer Electronics, Inc.In Stock: 855RK73H1HTTCM2491D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC2491D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 2.49 kOhms
• Tolerance: ±0.5%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: MSL 1

The substitute part RK73H1HTTCM2491D meets all mandatory parameters and represents the direct equivalent from the same manufacturer series (RK73H). The primary distinction is product status: the substitute carries "Active" status, indicating current production and availability, whereas the main part is designated "Not For New Designs."

Parameter Comparison

Engineering Selection Recommendations

For New Designs: Select RK73H1HTTCM2491D. This part carries "Active" product status, ensuring long-term availability, ongoing manufacturer support, and compliance with current automotive qualification standards. The active status guarantees continued production and supply chain stability.

For Legacy System Support: RK73H1HTTC2491D remains functionally equivalent and maintains full electrical and mechanical compatibility. Current inventory of 813 pieces supports near-term requirements. However, transition planning to the active substitute is recommended for long-term sustainability.

Compliance Verification: Both parts maintain identical AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity rating. No additional qualification testing is required when substituting between these parts in existing automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM2491D be used as a direct replacement for RK73H1HTTC2491D?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 2.49 kOhm resistance, ±0.5% tolerance, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C to 155°C operating range, AEC-Q200 rating, and ROHS3 compliance. The substitute is the current production equivalent.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the RK73H1HTTC2491D has been superseded in the manufacturer's active product line. While existing inventory remains available and fully functional, new designs should specify the active substitute RK73H1HTTCM2491D to ensure long-term supply availability and manufacturer support.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use identical 0201 (0603 Metric) packaging with matching 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 are interchangeable.

Q: Do these parts require different handling or storage procedures?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling. Standard component storage conditions apply to both parts.

Q: Is additional qualification testing required when substituting between these parts?

A: No. Both parts maintain identical AEC-Q200 automotive qualification and ROHS3 compliance. No additional testing or re-qualification is necessary for automotive applications already using the main part.