RK73H1HTTC2R20F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC2R20F is a 2.2 Ohm ±1% thick film chip resistor in 0201 package (0603 metric) rated for 0.05W (1/20W) power dissipation. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC2R20F

KOA Speer Electronics, Inc.In Stock: 1124RK73H1HTTC2R20F Datasheet

Current PartRFQ

RK73H1HTTCM2R20F

KOA Speer Electronics, Inc.In Stock: 1009RK73H1HTTCM2R20F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC2R20F is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Resistance value: 2.2 Ohms
• Tolerance: ±1%
• Power rating: 0.05W minimum
• Temperature coefficient: ±400ppm/°C
• Operating temperature range: -55°C to 155°C minimum

Mechanical Parameters (Non-Negotiable):

• Package type: 0201 (0603 Metric)
• Physical dimensions: 0.024" L × 0.012" W (0.60mm × 0.30mm)
• Height seated maximum: 0.010" (0.26mm)
• Number of terminations: 2

Compliance & Certification (Non-Negotiable):

• Automotive AEC-Q200 qualification
• RoHS3 compliance
• Moisture Sensitivity Level: MSL 1
• Composition: Thick Film

Substitute parts must match all parameters listed above. Deviations in any category disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM2R20F is the direct equivalent substitute for RK73H1HTTC2R20F.

Basis for Selection:

The RK73H1HTTCM2R20F maintains complete electrical and mechanical equivalence with the original part across all specified parameters. Both components are manufactured by KOA Speer Electronics within the RK73H series and share identical resistance value (2.2 Ohms), tolerance (±1%), power rating (0.05W), package configuration (0201/0603 Metric), and automotive qualification (AEC-Q200).

The critical distinction is product status: the original RK73H1HTTC2R20F is designated "Not For New Designs," while the substitute RK73H1HTTCM2R20F carries "Active" status. This transition indicates the substitute represents the current production alternative within the manufacturer's portfolio. Both parts satisfy identical compliance requirements including RoHS3, REACH Unaffected status, and MSL 1 moisture sensitivity classification.

For applications currently using RK73H1HTTC2R20F, transition to RK73H1HTTCM2R20F is supported by full parameter equivalence and active manufacturing status. No circuit redesign or PCB layout modification is required.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM2R20F be used as a direct replacement for RK73H1HTTC2R20F without circuit modification?

A: Yes. The substitute part matches all electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical specifications (0201 package, physical dimensions, termination count). No circuit redesign is necessary.

Q: Are there any differences in automotive qualification between these parts?

A: No. Both parts carry AEC-Q200 qualification, meeting identical automotive reliability and performance standards.

Q: What is the significance of the product status change from "Not For New Designs" to "Active"?

A: The original part (RK73H1HTTC2R20F) has been superseded in the manufacturer's product line. The substitute (RK73H1HTTCM2R20F) represents the current production equivalent. For new designs and ongoing production, the active part is the recommended selection.

Q: Do these parts have identical moisture handling requirements?

A: Yes. Both parts are classified as MSL 1 (Unlimited), indicating no moisture-related storage or handling restrictions apply.

Q: Are the physical dimensions identical for PCB assembly compatibility?

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

Q: Do both parts meet the same environmental compliance standards?

A: Yes. Both parts are RoHS3 compliant and REACH Unaffected, satisfying identical environmental and regulatory requirements.

Q: Is there any difference in temperature performance between these parts?

A: No. Both parts operate across -55°C to 155°C with identical temperature coefficient of ±400ppm/°C, providing equivalent thermal stability and performance characteristics.