RK73H1HTTC4530D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4530D is a 453 Ohm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC4530D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this specific part number may no longer be readily available through standard procurement channels.

Substiute Parts

RK73H1HTTC4530D

KOA Speer Electronics, Inc.In Stock: 975RK73H1HTTC4530D Datasheet

Current PartRFQ

RK73H1HTTCM4530D

KOA Speer Electronics, Inc.In Stock: 998RK73H1HTTCM4530D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC4530D must satisfy the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 453 Ohms (exact match required)
• Tolerance: ±0.5% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Substitute parts must maintain identical electrical performance characteristics and physical dimensions to ensure direct replacement capability in existing circuit designs and PCB layouts. The automotive AEC-Q200 qualification and moisture-resistant thick film construction are mandatory for applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM4530D is the direct equivalent substitute for the RK73H1HTTC4530D. Both parts are manufactured by KOA Speer Electronics, Inc., within the RK73H series and share identical electrical specifications, mechanical dimensions, and compliance certifications.

The primary distinction between these parts is product status: the RK73H1HTTC4530D is designated "Not For New Designs," while the RK73H1HTTCM4530D carries "Active" status. This indicates that RK73H1HTTCM4530D is the current production equivalent and the recommended selection for ongoing applications.

Both parts satisfy AEC-Q200 automotive qualification requirements, ROHS3 compliance, and REACH unaffected status. The identical operating temperature range (-55°C ~ 155°C), moisture sensitivity level (MSL 1), and physical package dimensions ensure direct interchangeability in existing circuit designs without modification to PCB layouts or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4530D be used as a direct replacement for RK73H1HTTC4530D?

A: Yes. The RK73H1HTTCM4530D is a direct equivalent substitute. Both parts share identical resistance value (453 Ohms), tolerance (±0.5%), power rating (0.05W), package dimensions (0201 / 0603 Metric), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. No circuit modifications or PCB layout changes are required.

Q: What is the significance of the product status difference?

A: The RK73H1HTTC4530D is marked "Not For New Designs," indicating the manufacturer has transitioned this part to end-of-life status. The RK73H1HTTCM4530D carries "Active" status, meaning it is the current production equivalent. For new designs and ongoing production, RK73H1HTTCM4530D should be specified.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts have identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with a maximum seated height of 0.010" (0.26mm). They are packaged in the same 0201 (0603 Metric) case, ensuring identical PCB footprints and assembly compatibility.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the RK73H1HTTC4530D and RK73H1HTTCM4530D are AEC-Q200 qualified and designed for automotive applications. Both feature moisture-resistant thick film construction and are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference in available inventory?

A: The RK73H1HTTC4530D has 913 pieces in stock (legacy part), while the RK73H1HTTCM4530D has 920 pieces in stock (active part). For long-term supply assurance, the active part number is preferred.