Equivalent & Substitute Parts for RK73H1HTTC8663F

Part Overview

The RK73H1HTTC8663F is a 866 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 package (0603 Metric). This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC8663F carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to support existing designs, facilitate production continuity, and provide alternative sourcing options for applications where this resistor is currently deployed.

Substiute Parts

RK73H1HTTC8663F

KOA Speer Electronics, Inc.In Stock: 8980RK73H1HTTC8663F Datasheet

Current PartRFQ

RK73H1HTTCM8663F

KOA Speer Electronics, Inc.In Stock: 989RK73H1HTTCM8663F Datasheet

MFR RecommendedRFQ

AC0201FR-07866KL

YAGEOIn Stock: 1000AC0201FR-07866KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC8663F are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 866 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical & Compliance Criteria:

• Package type: 0201 (0603 Metric)
• Composition: Thick Film
• Automotive qualification: AEC-Q200
• Moisture resistance: Required
• RoHS compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts must match all electrical parameters and maintain automotive-grade qualification with moisture-resistant construction. Package dimensions and termination count must be identical to ensure direct mechanical and electrical compatibility in existing PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM8663F (KOA Speer Electronics, Inc.)

The RK73H1HTTCM8663F is the manufacturer-recommended substitute. This part maintains identical electrical specifications and package configuration as the RK73H1HTTC8663F. The primary distinction is product status: RK73H1HTTCM8663F is Active, whereas the original part is Not For New Designs. Both parts are ROHS3 compliant and carry AEC-Q200 automotive qualification. However, the RK73H1HTTCM8663F does not specify moisture-resistant construction in its detailed description, whereas the original part explicitly includes this feature. For applications requiring moisture resistance, this difference should be evaluated against specific environmental requirements.

Cross-Manufacturer Substitute: AC0201FR-07866KL (YAGEO)

The AC0201FR-07866KL from YAGEO provides a cross-manufacturer alternative with full electrical and mechanical equivalence. This part matches all critical parameters: 866 kOhms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 automotive qualification, and moisture-resistant construction. The AC0201FR-07866KL is Active in product status and ROHS3 compliant. This substitute is suitable for direct replacement in existing designs where cross-manufacturer sourcing is acceptable.

Selection Basis:

Both substitute parts satisfy the electrical and mechanical requirements established by the original RK73H1HTTC8663F specification. Selection between them depends on supply chain preferences, manufacturer qualification requirements, and the criticality of moisture-resistant construction in the target application. The RK73H1HTTCM8663F maintains single-manufacturer continuity, while AC0201FR-07866KL provides diversified sourcing from an established alternative supplier.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM8663F be used as a direct replacement for RK73H1HTTC8663F?

A: The RK73H1HTTCM8663F matches all electrical parameters and package specifications. Both parts are manufactured by KOA Speer Electronics, Inc., carry AEC-Q200 qualification, and are ROHS3 compliant. The primary difference is that RK73H1HTTCM8663F does not explicitly specify moisture-resistant construction. For applications where moisture resistance is a design requirement, this distinction must be confirmed with the manufacturer or evaluated against environmental exposure conditions.

Q: Is AC0201FR-07866KL compatible with existing PCB layouts designed for RK73H1HTTC8663F?

A: Yes. The AC0201FR-07866KL is mechanically and electrically equivalent. Both parts use the 0201 (0603 Metric) package with identical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). The part can be placed using the same PCB footprint and soldering process without modification.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by: resistance value (866 kOhms), tolerance (±1%), power rating (0.05W), package type (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), AEC-Q200 automotive qualification, and RoHS compliance. Moisture-resistant construction is specified for the original part and should be maintained unless application requirements are modified.

Q: Why is RK73H1HTTC8663F marked "Not For New Designs"?

A: This status indicates that KOA Speer Electronics, Inc. has transitioned this part to end-of-life or limited production. The RK73H1HTTCM8663F is the active replacement. For new designs, the active substitute should be selected. For existing designs currently using RK73H1HTTC8663F, substitution with an active part ensures long-term supply availability.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive qualification and are rated for the -55°C ~ 155°C operating temperature range required by automotive standards. Both KOA and YAGEO parts are qualified for automotive use.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity limitations. These parts do not require special moisture-controlled storage or handling procedures and can be stored under standard industrial conditions without time-based restrictions.