Equivalent & Substitute Parts for RK73H1HTTC5233F

Part Overview

The RK73H1HTTC5233F is a 523 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0.60mm x 0.30mm metric). This component is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is currently classified as "Not For New Designs," indicating it has been superseded. Identifying equivalent and substitute parts is necessary for ongoing support of legacy systems, inventory optimization, and design flexibility when the primary part becomes unavailable.

Substiute Parts

RK73H1HTTC5233F

KOA Speer Electronics, Inc.In Stock: 1119RK73H1HTTC5233F Datasheet

Current PartRFQ

RK73H1HTTCM5233F

KOA Speer Electronics, Inc.In Stock: 877RK73H1HTTCM5233F Datasheet

MFR RecommendedRFQ

AC0201FR-07523KL

YAGEOIn Stock: 1075AC0201FR-07523KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC5233F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 523 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)

All identified substitute parts meet these parameters without exception. Substitutes are grouped into two categories: (1) MFR Recommended—an active-status variant from the same manufacturer series, and (2) Direct Manufacturer—an equivalent from an alternative qualified manufacturer with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Support: The RK73H1HTTCM5233F from KOA Speer Electronics, Inc. is the primary recommended substitute. This part maintains the same manufacturer lineage (RK73H series), carries Active product status, and is fully compliant with all electrical and mechanical specifications. It is the direct successor to the RK73H1HTTC5233F and is the preferred choice for ongoing production support of existing designs.

For Cross-Manufacturer Compatibility: The AC0201FR-07523KL from YAGEO provides an equivalent alternative with identical electrical characteristics, AEC-Q200 automotive qualification, and moisture-resistant construction. This part is suitable for applications requiring multi-source qualification or when KOA supply is constrained. Both parts are in active production status and carry full RoHS3 compliance.

Compliance Considerations: All three parts meet ROHS3 compliance, carry MSL 1 (Unlimited) ratings, and operate across the full -55°C to 155°C temperature range required for automotive applications. The AEC-Q200 qualification on all parts confirms suitability for automotive-grade reliability requirements.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM5233F be used as a direct replacement for RK73H1HTTC5233F?

A: Yes. The RK73H1HTTCM5233F is electrically and mechanically identical to the RK73H1HTTC5233F across all critical parameters: 523 kOhms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C to 155°C operating range, AEC-Q200 qualification, and ROHS3 compliance. The primary difference is product status—RK73H1HTTCM5233F is Active, while the original is Not For New Designs.

Q: What is the difference between RK73H1HTTC5233F and AC0201FR-07523KL?

A: Both parts are functionally equivalent with identical resistance, tolerance, power rating, package, and operating specifications. The primary differences are manufacturer (KOA vs. YAGEO) and packaging designation. Both carry AEC-Q200 automotive qualification and ROHS3 compliance. Selection between them depends on supply availability and multi-source qualification requirements.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 qualification, confirming suitability for automotive-grade applications. They all operate across -55°C to 155°C and maintain ±200ppm/°C temperature stability. MSL 1 (Unlimited) rating on all parts indicates no moisture sensitivity concerns during storage or handling.

Q: Does the 0201 package dimension differ between manufacturers?

A: No. All three parts use the 0201 package (0603 metric equivalent), 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). They are mechanically interchangeable on PCB layouts.

Q: Which part should be selected for new design work?

A: For new designs, either RK73H1HTTCM5233F (KOA, Active status) or AC0201FR-07523KL (YAGEO, Active status) is appropriate. The original RK73H1HTTC5233F is marked "Not For New Designs" and should not be used in new development. Selection between the two active alternatives depends on supply chain strategy and existing manufacturer relationships.

Q: Are there any differences in moisture resistance between the parts?

A: The RK73H1HTTC5233F and AC0201FR-07523KL both specify moisture-resistant construction. The RK73H1HTTCM5233F does not explicitly state moisture resistance in the provided specifications, though it carries the same MSL 1 (Unlimited) rating. For applications with critical moisture exposure requirements, AC0201FR-07523KL or RK73H1HTTC5233F are the documented choices.