Equivalent & Substitute Parts Reference: RK73H1HTTC73R2F

Part Overview

The RK73H1HTTC73R2F is a 73.2 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC73R2F carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support legacy system maintenance or redesign initiatives.

Substiute Parts

RK73H1HTTC73R2F

KOA Speer Electronics, Inc.In Stock: 1008RK73H1HTTC73R2F Datasheet

Current PartRFQ

RK73H1HTTCM73R2F

KOA Speer Electronics, Inc.In Stock: 714RK73H1HTTCM73R2F Datasheet

MFR RecommendedRFQ

AC0201FR-0773R2L

YAGEOIn Stock: 861AC0201FR-0773R2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC73R2F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 73.2 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture resistance: Required
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

All substitute parts listed maintain identical electrical specifications and physical dimensions. Substitution is valid across manufacturers when these parameters are matched. The primary distinction between parts lies in product status (active vs. obsolete) and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Support: The RK73H1HTTC73R2F remains available with 978 pieces in stock. This part is suitable for maintenance, repair, and obsolescence management of existing designs where the original specification is required.

For Active Design or Redesign: The RK73H1HTTCM73R2F is the manufacturer-recommended successor from KOA Speer Electronics, Inc. This part carries Active product status and maintains all critical electrical and mechanical parameters. Selection of this part ensures long-term supply chain continuity and manufacturer support.

For Cross-Manufacturer Substitution: The AC0201FR-0773R2L from YAGEO is a direct functional equivalent with Active product status. This part matches all electrical specifications, physical dimensions, and automotive qualifications. Cross-manufacturer substitution is valid when supply constraints or cost optimization require alternative sourcing. Both KOA and YAGEO parts are AEC-Q200 qualified and ROHS3 compliant.

Compliance Considerations: All three parts maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and AEC-Q200 automotive qualification. Selection among these parts does not introduce compliance risk in automotive applications.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM73R2F directly replace the RK73H1HTTC73R2F in existing designs?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., and maintain identical electrical specifications (73.2 Ohms ±1%, 0.05W), physical dimensions (0201 package), temperature characteristics (±200ppm/°C, -55°C ~ 155°C), and automotive qualifications (AEC-Q200). The primary difference is product status; RK73H1HTTCM73R2F is Active while RK73H1HTTC73R2F is Not For New Designs.

Q: Is the YAGEO AC0201FR-0773R2L compatible with designs specified for the RK73H1HTTC73R2F?

A: Yes. The AC0201FR-0773R2L matches all critical electrical and mechanical parameters: 73.2 Ohms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, and ROHS3 compliance. Cross-manufacturer substitution is valid for this component category.

Q: What is the significance of the "Not For New Designs" status on the RK73H1HTTC73R2F?

A: This designation indicates the part has been superseded in the manufacturer's active product line. While the part remains available and functional, KOA Speer Electronics, Inc., recommends using the RK73H1HTTCM73R2F for new designs. Existing designs may continue using the original part for maintenance and support.

Q: Are there differences in moisture resistance between the substitute parts?

A: The RK73H1HTTC73R2F and AC0201FR-0773R2L both specify moisture-resistant construction. The RK73H1HTTCM73R2F does not explicitly specify moisture resistance in the provided data, though it maintains the same MSL 1 (Unlimited) rating. For applications requiring confirmed moisture resistance, the RK73H1HTTC73R2F or AC0201FR-0773R2L are preferred.

Q: Can these parts be used interchangeably in tape and reel packaging?

A: The RK73H1HTTC73R2F and AC0201FR-0773R2L are both available in Tape & Reel (TR) packaging. The RK73H1HTTCM73R2F packaging format is not specified in the provided data. Verify packaging availability with the supplier before finalizing procurement specifications.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant, AEC-Q200 qualified for automotive applications, and carry MSL 1 (Unlimited) moisture sensitivity ratings. REACH status is Unaffected for all parts, and ECCN classification is EAR99 for all parts.