Equivalent & Substitute Parts for RK73H1HTTC2801D

Part Overview

The RK73H1HTTC2801D is a 2.8 kOhms ±0.5% chip resistor manufactured by KOA Speer Electronics, Inc., designed for 0.05W (1/20W) applications in 0201 (0603 Metric) package format. This component is rated for automotive applications under AEC-Q200 standard with moisture-resistant thick film construction. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC2801D

KOA Speer Electronics, Inc.In Stock: 786RK73H1HTTC2801D Datasheet

Current PartRFQ

RK73H1HTTCM2801D

KOA Speer Electronics, Inc.In Stock: 1103RK73H1HTTCM2801D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC2801D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 2.8 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 format: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Certification:

• Automotive rating: AEC-Q200 (exact match required)
• RoHS status: ROHS3 Compliant (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)

Substitute parts must maintain identical specifications across all listed parameters. Product status (Active vs. Not For New Designs) does not affect substitution eligibility but indicates manufacturing lifecycle position.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM2801D is a direct functional equivalent to the RK73H1HTTC2801D. 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 lifecycle status: the original part is classified as "Not For New Designs," while the substitute is designated as "Active."

For applications currently using RK73H1HTTC2801D, the RK73H1HTTCM2801D provides continuity of supply and design compatibility. Both parts meet AEC-Q200 automotive qualification, ROHS3 compliance, and REACH requirements. The substitute maintains the same 0201 package footprint, electrical performance characteristics, and environmental operating range (-55°C ~ 155°C).

Selection between these parts should be based on supply availability and design lifecycle requirements. The Active status of RK73H1HTTCM2801D indicates ongoing manufacturer support and production continuity, making it the preferred choice for new procurement and long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM2801D be used as a direct replacement for RK73H1HTTC2801D in existing designs?

A: Yes. Both components are electrically and mechanically identical across all specified parameters, including resistance value, tolerance, power rating, package format, temperature coefficient, and operating temperature range. They are interchangeable at the component level.

Q: What is the significance of the "Not For New Designs" status on the original part?

A: This designation indicates that the manufacturer has transitioned the RK73H1HTTC2801D out of active production. It does not affect the component's functionality or performance in existing applications. However, it signals that the manufacturer recommends using the Active equivalent (RK73H1HTTCM2801D) for new designs to ensure long-term supply availability.

Q: Are there any differences in the 0201 package footprint between these two parts?

A: No. Both components use the identical 0201 (0603 Metric) package with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both RK73H1HTTC2801D and RK73H1HTTCM2801D are rated to AEC-Q200 automotive standard and are suitable for automotive applications requiring this certification.

Q: What is the difference between the part numbers RK73H1HTTC2801D and RK73H1HTTCM2801D?

A: The difference is indicated by the "M" character in the middle of the part number designation (HTTCM vs. HTTC). This typically indicates a revision or variant within the manufacturer's product line. Both parts maintain identical electrical and mechanical specifications for the 2.8 kOhms ±0.5% 0.05W 0201 resistor.

Q: Are moisture-resistant properties maintained in the substitute part?

A: The original part explicitly lists "Moisture Resistant" in its features. The substitute part (RK73H1HTTCM2801D) maintains the same Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating equivalent moisture handling characteristics.

Q: Can these parts be used interchangeably in high-reliability applications?

A: Yes. Both components carry identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN) and automotive qualification (AEC-Q200), making them suitable for high-reliability applications. The substitute's Active status provides additional assurance of ongoing quality control and supply continuity.