RK73H1HTTC4641D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4641D is a 4.64 kOhms ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in the 0201 (0603 Metric) package format. This component is rated for 0.05W (1/20W) power dissipation and meets AEC-Q200 automotive qualification standards with moisture-resistant construction.

The RK73H1HTTC4641D carries a product status designation of "Not For New Designs," indicating that KOA Speer Electronics has transitioned this part to end-of-life status. For new design implementations and ongoing production requirements, equivalent substitute parts with active product status are available within the same RK73H series.

Substiute Parts

RK73H1HTTC4641D

KOA Speer Electronics, Inc.In Stock: 1050RK73H1HTTC4641D Datasheet

Current PartRFQ

RK73H1HTTCM4641D

KOA Speer Electronics, Inc.In Stock: 864RK73H1HTTCM4641D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC4641D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 4.64 kOhms
• Tolerance: ±0.5%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters:

• Package format: 0201 (0603 Metric)
• Number of terminations: 2
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Maximum seated height: 0.010" (0.26mm)

Compliance & Quality Parameters:

• Composition: Thick Film
• Automotive qualification: AEC-Q200
• Moisture resistance: Required
• RoHS status: ROHS3 Compliant
• Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts must maintain identical values across all electrical parameters, identical physical package specifications, and equivalent or superior compliance certifications. Series continuity within the RK73H family is maintained for all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM4641D is the direct equivalent substitute for the RK73H1HTTC4641D. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73H series and maintain identical electrical and mechanical specifications.

The primary distinction between these parts is product lifecycle status. The RK73H1HTTC4641D is designated "Not For New Designs," indicating end-of-life classification. The RK73H1HTTCM4641D carries "Active" product status, confirming ongoing manufacturing and availability for current and future production requirements.

Both parts satisfy AEC-Q200 automotive qualification requirements and ROHS3 compliance mandates. Both maintain MSL 1 (Unlimited) moisture sensitivity ratings, suitable for unrestricted storage and handling conditions. Electrical performance, thermal characteristics, and package dimensions are identical across both components.

For applications currently utilizing the RK73H1HTTC4641D, transition to the RK73H1HTTCM4641D is supported without circuit redesign or performance modification. For new design implementations, the RK73H1HTTCM4641D is the appropriate selection based on active product status and long-term availability assurance.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM4641D be used as a direct replacement for the RK73H1HTTC4641D in existing assemblies?

A: Yes. Both components are electrically and mechanically identical. The RK73H1HTTCM4641D provides direct substitution without circuit modification or performance impact.

Q: What is the significance of the product status difference between these parts?

A: The RK73H1HTTC4641D is classified "Not For New Designs," indicating KOA Speer Electronics has transitioned this part to end-of-life status. The RK73H1HTTCM4641D carries "Active" status, confirming current manufacturing and long-term availability. For new designs, the active part is the appropriate selection.

Q: Are the physical dimensions and package specifications identical?

A: Yes. Both components are packaged in 0201 (0603 Metric) format with identical 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: Do both parts meet automotive qualification standards?

A: Yes. Both the RK73H1HTTC4641D and RK73H1HTTCM4641D are AEC-Q200 qualified and ROHS3 compliant. Both maintain MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What are the electrical specifications that define substitution eligibility?

A: Substitution is based on identical resistance (4.64 kOhms), tolerance (±0.5%), power rating (0.05W), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 155°C). All these parameters are identical between the main part and substitute.

Q: Is the moisture-resistant feature maintained in the substitute part?

A: The RK73H1HTTC4641D explicitly specifies moisture-resistant construction. The RK73H1HTTCM4641D detailed description does not explicitly reference moisture resistance, though both parts maintain identical MSL 1 ratings and AEC-Q200 automotive qualification.