RK73H1HTTC4753D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4753D is a 475 kOhms ±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The RK73H1HTTC4753D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line.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 to ensure design continuity, maintain supply chain reliability, and transition to actively supported alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC4753D

KOA Speer Electronics, Inc.In Stock: 974RK73H1HTTC4753D Datasheet

Current PartRFQ

RK73H1HTTCM4753D

KOA Speer Electronics, Inc.In Stock: 1145RK73H1HTTCM4753D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC4753D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 475 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 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 & Quality Parameters:

• Automotive rating: AEC-Q200 (minimum requirement)
• Composition: Thick Film (exact match required)
• RoHS Status: ROHS3 Compliant (minimum requirement)
• Moisture Sensitivity Level: MSL 1 (Unlimited) (exact match required)

Substitute parts must originate from the same manufacturer series (RK73H) to ensure process consistency and reliability in automotive applications.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM4753D is the direct equivalent substitute for the RK73H1HTTC4753D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series and share identical electrical, mechanical, and compliance specifications.

The primary distinction is product status: the RK73H1HTTC4753D is designated "Not For New Designs," while the RK73H1HTTCM4753D maintains "Active" status in the manufacturer's current product portfolio. This status change reflects the manufacturer's ongoing support and availability commitment for the substitute part.

Both parts satisfy AEC-Q200 automotive qualification requirements, ROHS3 compliance, and MSL 1 moisture sensitivity classification. The substitute part is suitable for direct replacement in existing designs and is the recommended selection for new automotive applications requiring a 475 kOhms ±0.5% 0.05W thick film chip resistor in 0201 package format.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM4753D be used as a direct replacement for the RK73H1HTTC4753D?

A: Yes. The RK73H1HTTCM4753D is electrically and mechanically identical to the RK73H1HTTC4753D across all specified parameters, including resistance value, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature range. Both components meet AEC-Q200 automotive standards and ROHS3 compliance requirements.

Q: Why is the RK73H1HTTC4753D marked "Not For New Designs"?

A: The "Not For New Designs" status indicates that the manufacturer has transitioned this part number to a successor model within the active product line. The RK73H1HTTCM4753D represents the current active equivalent. For new designs, the active substitute part is the recommended selection to ensure long-term supply chain continuity and manufacturer support.

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

A: Both parts are supplied in 0201 (0603 Metric) package format with identical physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). Both carry MSL 1 (Unlimited) moisture sensitivity classification, requiring no special moisture control during storage or handling.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the RK73H1HTTC4753D and RK73H1HTTCM4753D are AEC-Q200 qualified, confirming compliance with automotive reliability and quality standards. Both are ROHS3 compliant and REACH unaffected.

Q: What is the temperature coefficient specification, and does it differ between the two parts?

A: Both parts specify a temperature coefficient of ±200ppm/°C with an operating temperature range of -55°C ~ 155°C. This specification is identical across both components.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. The RK73H1HTTCM4753D and RK73H1HTTC4753D are mechanically and electrically interchangeable. Both use identical 0201 package footprints and termination configurations, allowing direct substitution in PCB designs without layout modifications.