RK73H1HTTC4752D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4752D is a 47.5 kOhms ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in 0201 (0603 Metric) package format with 0.05W power rating. This component is rated for automotive applications under AEC-Q200 standard and features moisture-resistant construction suitable for harsh operating environments.

The RK73H1HTTC4752D carries a product status designation of "Not For New Designs," indicating that while the part remains available in inventory, KOA Speer Electronics has transitioned this model out of active production. Identifying equivalent substitute parts with active product status ensures design continuity and long-term supply chain reliability for new development projects and production requirements.

Substiute Parts

RK73H1HTTC4752D

KOA Speer Electronics, Inc.In Stock: 881RK73H1HTTC4752D Datasheet

Current PartRFQ

RK73H1HTTCM4752D

KOA Speer Electronics, Inc.In Stock: 1134RK73H1HTTCM4752D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC4752D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 47.5 kOhms (exact match required)
• Tolerance: ±0.5% (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 & Package Parameters:

• Package format: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Physical dimensions: 0.024" L x 0.012" W / 0.60mm x 0.30mm (exact match required)
• Height seated maximum: 0.010" / 0.26mm (exact match required)

Compliance & Certification Parameters:

• Automotive rating: AEC-Q200 (exact match required)
• Moisture resistance: Moisture Resistant (exact match required)
• RoHS status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Substitute parts must satisfy all parameters listed above. Product status transition from "Not For New Designs" to "Active" is permitted and represents an improvement in supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM4752D is a direct functional equivalent to the RK73H1HTTC4752D. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73H series and satisfy identical electrical, mechanical, and compliance specifications.

The primary distinction between these parts is product lifecycle status. The RK73H1HTTC4752D is designated "Not For New Designs," indicating that KOA Speer Electronics has concluded active development and production support for this specific model variant. The RK73H1HTTCM4752D carries "Active" product status, confirming ongoing manufacturing, quality assurance, and supply chain support from the manufacturer.

For new design implementations, production ramp-up, and long-term supply chain planning, the RK73H1HTTCM4752D is the appropriate selection. Both parts maintain identical AEC-Q200 automotive qualification, ROHS3 compliance, and moisture-resistant thick film construction. Electrical performance, thermal characteristics, and mechanical fit are functionally identical across all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4752D be used as a direct replacement for RK73H1HTTC4752D in existing designs?

A: Yes. The RK73H1HTTCM4752D is electrically and mechanically equivalent to the RK73H1HTTC4752D. All electrical parameters (resistance, tolerance, power rating, temperature coefficient), physical dimensions, package format, and compliance certifications are identical. Direct substitution is permissible without circuit redesign or board layout modification.

Q: What does "Not For New Designs" mean for the RK73H1HTTC4752D?

A: This designation indicates that KOA Speer Electronics has transitioned the RK73H1HTTC4752D out of active production. While existing inventory remains available for purchase, the manufacturer no longer recommends this part number for new product development. The RK73H1HTTCM4752D represents the current active equivalent within the same product family.

Q: Are there any differences in AEC-Q200 automotive qualification between these parts?

A: No. Both the RK73H1HTTC4752D and RK73H1HTTCM4752D carry identical AEC-Q200 automotive qualification. Both components meet the same reliability, temperature cycling, and environmental stress testing requirements specified by the Automotive Electronics Council.

Q: Do both parts have the same moisture sensitivity level?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Both parts can be stored and handled without time-dependent moisture absorption concerns, and both are suitable for standard PCB assembly processes without special baking or desiccant storage requirements.

Q: Is the 0201 package format identical between both parts?

A: Yes. Both the RK73H1HTTC4752D and RK73H1HTTCM4752D use the 0201 (0603 Metric) package format with identical physical dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints and assembly processes are interchangeable.

Q: What is the difference between the part numbers RK73H1HTTC4752D and RK73H1HTTCM4752D?

A: The part numbers differ by a single character: "C" versus "CM" in the suffix. This designation change reflects KOA Speer Electronics' product lifecycle management and indicates a transition from a discontinued model (RK73H1HTTC4752D) to an active production equivalent (RK73H1HTTCM4752D). The electrical and mechanical specifications remain unchanged.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the RK73H1HTTC4752D and RK73H1HTTCM4752D are ROHS3 compliant, confirming compliance with the Restriction of Hazardous Substances Directive. Both parts are suitable for applications requiring RoHS certification.