Equivalent & Substitute Parts for RK73H1HTTC1053F

Part Overview

The RK73H1HTTC1053F is a 105 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0603 metric). This component is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is classified as "Not For New Designs," indicating that alternative solutions should be evaluated for new development projects. Identifying equivalent and substitute parts is necessary to ensure design flexibility, improve supply chain resilience, and support long-term product availability.

Substiute Parts

RK73H1HTTC1053F

KOA Speer Electronics, Inc.In Stock: 8163RK73H1HTTC1053F Datasheet

Current PartRFQ

RK73H1HTTCM1053F

KOA Speer Electronics, Inc.In Stock: 855RK73H1HTTCM1053F Datasheet

MFR RecommendedRFQ

AC0201FR-07105KL

YAGEOIn Stock: 785AC0201FR-07105KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC1053F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 105 kOhms
• Tolerance: ±1%
• 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
• Moisture resistance: Required
• RoHS compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Manufacturer Recommended Substitute Parts from the same manufacturer (KOA Speer Electronics, Inc.) that maintain identical electrical specifications and automotive qualifications but may differ in product status or packaging configuration.

Category 2: Direct Cross-Reference Substitute Parts from alternative manufacturers (YAGEO) that provide equivalent electrical performance, automotive certification, and physical compatibility with identical package specifications.

Parameter Comparison

Engineering Selection Recommendations

For New Design Projects: Select either RK73H1HTTCM1053F (KOA Speer Electronics, Inc.) or AC0201FR-07105KL (YAGEO). Both parts carry Active product status and meet all electrical and compliance requirements. The RK73H1HTTCM1053F maintains continuity with the original manufacturer ecosystem, while AC0201FR-07105KL provides supply chain diversification through an alternative qualified manufacturer.

For Existing Designs (Legacy Support): The RK73H1HTTC1053F remains available with 8079 pieces in stock. Transition to an Active-status substitute is recommended for long-term sustainability. RK73H1HTTCM1053F offers the most direct transition path due to identical manufacturer and series designation.

Compliance Considerations: All three parts maintain ROHS3 compliance, AEC-Q200 automotive qualification, and MSL 1 (Unlimited) moisture sensitivity rating. The AC0201FR-07105KL explicitly specifies moisture-resistant construction, matching the original part's environmental protection level. RK73H1HTTCM1053F does not explicitly list moisture resistance in the provided specifications, though it maintains identical electrical and thermal performance.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1053F be used as a direct replacement for RK73H1HTTC1053F?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., share identical electrical specifications (105 kOhms ±1%, 0.05W, ±200ppm/°C), operate across the same temperature range (-55°C ~ 155°C), and carry AEC-Q200 automotive qualification. The primary difference is product status: RK73H1HTTCM1053F is Active, while RK73H1HTTC1053F is Not For New Designs. Packaging configuration differs (Tape & Reel specified for the main part; not specified for the substitute), but the 0201 package specification is identical.

Q: Is AC0201FR-07105KL compatible with designs using RK73H1HTTC1053F?

A: Yes. AC0201FR-07105KL meets all critical electrical and mechanical parameters: 105 kOhms ±1% resistance, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 automotive rating, ROHS3 compliance, and MSL 1 moisture sensitivity. The part is manufactured by YAGEO and carries Active product status. Moisture-resistant construction is explicitly specified, matching the environmental protection of the original part.

Q: What is the significance of the "Not For New Designs" status on RK73H1HTTC1053F?

A: This designation indicates that KOA Speer Electronics, Inc. is not recommending this part for new product development. Existing inventory (8079 pieces) remains available for legacy support and ongoing production of established designs. For new projects, RK73H1HTTCM1053F or AC0201FR-07105KL should be selected to ensure long-term availability and manufacturer support.

Q: Are there packaging differences between these substitutes?

A: All three parts use the 0201 (0603 Metric) package with identical physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). RK73H1HTTC1053F and AC0201FR-07105KL are specified as Tape & Reel (TR) packaging. RK73H1HTTCM1053F packaging type is not specified in the provided data. Verify packaging requirements with your procurement process before final selection.

Q: Do all substitutes maintain moisture-resistant properties?

A: RK73H1HTTC1053F and AC0201FR-07105KL explicitly specify moisture-resistant construction. RK73H1HTTCM1053F does not include moisture resistance in its detailed description, though it maintains identical MSL 1 (Unlimited) rating. For applications requiring explicit moisture-resistant thick film construction, AC0201FR-07105KL provides confirmed specification alignment with the original part.

Q: What compliance certifications apply to all substitute options?

A: All three parts are ROHS3 compliant, AEC-Q200 qualified for automotive applications, REACH Unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.