RK73H1HTTC4530F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4530F is a 453 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component meets automotive AEC-Q200 qualification and incorporates moisture-resistant construction suitable for harsh operating environments. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Equivalent and substitute parts are necessary for applications requiring continued supply, legacy system maintenance, or design flexibility within the same electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC4530F

KOA Speer Electronics, Inc.In Stock: 7517RK73H1HTTC4530F Datasheet

Current PartRFQ

RK73H1HTTCM4530F

KOA Speer Electronics, Inc.In Stock: 1068RK73H1HTTCM4530F Datasheet

MFR RecommendedRFQ

AC0201FR-07453RL

YAGEOIn Stock: 925AC0201FR-07453RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC4530F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 453 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package / Case: 0201 (0603 Metric) (exact match required)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) (exact match required)
• Height - Seated (Max): 0.010" (0.26mm) (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Environmental Parameters:

• Automotive AEC-Q200 qualification (required for automotive applications)
• Moisture-resistant thick film construction (required for environmental durability)
• RoHS3 compliance (required for regulatory conformance)
• Moisture Sensitivity Level 1 (required for handling and storage compatibility)

Substitute parts must satisfy all parameters listed above without exception. Deviations in any parameter disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM4530F (MFR Recommended Substitute)

This part is the manufacturer-recommended equivalent from KOA Speer Electronics, Inc. It maintains identical electrical and mechanical specifications to the RK73H1HTTC4530F while carrying an "Active" product status. This part is suitable for new designs and ongoing production. All compliance certifications (AEC-Q200, RoHS3, MSL 1) are maintained. Selection of this part eliminates obsolescence risk associated with the "Not For New Designs" status of the original part.

AC0201FR-07453RL (Direct Cross-Manufacturer Substitute)

This YAGEO part provides direct electrical and mechanical equivalence to the RK73H1HTTC4530F. All critical parameters—resistance, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature range—are identical. The part carries active product status and maintains full AEC-Q200 automotive qualification and RoHS3 compliance. This part is suitable for applications where cross-manufacturer sourcing is acceptable and provides supply chain flexibility.

Selection Criteria:

• For continued use of the original part number: Verify remaining inventory (7460 Pcs available) against project timeline and volume requirements.
• For new designs or long-term production: Select RK73H1HTTCM4530F to ensure sustained availability and manufacturer support.
• For supply chain diversification: AC0201FR-07453RL provides equivalent performance from an alternative manufacturer with active product status.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4530F be used as a direct replacement for RK73H1HTTC4530F?

A: Yes. RK73H1HTTCM4530F is the manufacturer-recommended equivalent. All electrical parameters (453 Ohms ±1%, 0.05W, ±200ppm/°C, -55°C ~ 155°C), mechanical specifications (0201 package, 0.024" x 0.012" dimensions), and compliance certifications (AEC-Q200, RoHS3, MSL 1) are identical. The primary difference is product status: RK73H1HTTCM4530F is Active, while RK73H1HTTC4530F is Not For New Designs.

Q: Is AC0201FR-07453RL compatible with designs specified for RK73H1HTTC4530F?

A: Yes. AC0201FR-07453RL meets all electrical and mechanical requirements for direct substitution. Resistance (453 Ohms ±1%), power rating (0.05W), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), package (0201), and physical dimensions (0.024" x 0.012") are identical. AEC-Q200 automotive qualification, RoHS3 compliance, and MSL 1 rating are maintained. The only difference is the manufacturer (YAGEO vs. KOA Speer Electronics, Inc.).

Q: What does "Not For New Designs" mean for the RK73H1HTTC4530F?

A: This status indicates the part has been superseded in the manufacturer's product line. While existing inventory (7460 Pcs) is available for current production or maintenance applications, the manufacturer does not recommend this part for new design projects. For new designs, RK73H1HTTCM4530F (Active status) is the recommended choice.

Q: Are there any differences in packaging between these parts?

A: RK73H1HTTC4530F and AC0201FR-07453RL are both supplied in Tape & Reel (TR) packaging. RK73H1HTTCM4530F packaging information is not specified in available data but maintains identical component specifications. 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).

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

A: No. All three parts carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating they do not require special moisture-controlled storage or handling procedures. Standard component storage conditions are appropriate for all three parts.

Q: Can these parts be used interchangeably in automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive qualification, confirming suitability for automotive-grade applications. They meet identical electrical performance, temperature stability, and reliability requirements for automotive use.

Q: What is the temperature coefficient significance for these parts?

A: The ±200ppm/°C temperature coefficient indicates the resistance value will change by approximately 0.02% per degree Celsius across the operating range (-55°C ~ 155°C). This specification is identical across all three parts, ensuring equivalent performance stability in temperature-variable environments.