Equivalent & Substitute Parts for RK73H1HTTC90R9F

Part Overview

The RK73H1HTTC90R9F is a 90.9 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated for 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) surface mount package. This component is qualified to AEC-Q200 automotive standards and features moisture resistance with unlimited moisture sensitivity level (MSL 1).

The RK73H1HTTC90R9F is classified as "Not For New Designs," indicating it has been superseded. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production of systems utilizing this component.

Substiute Parts

RK73H1HTTC90R9F

KOA Speer Electronics, Inc.In Stock: 25290RK73H1HTTC90R9F Datasheet

Current PartRFQ

RK73H1HTTCM90R9F

KOA Speer Electronics, Inc.In Stock: 853RK73H1HTTCM90R9F Datasheet

MFR RecommendedRFQ

AC0201FR-0790R9L

YAGEOIn Stock: 730AC0201FR-0790R9L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC90R9F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 90.9 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 capability
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

All substitute parts listed maintain these specifications, ensuring functional and mechanical compatibility in applications originally designed for the RK73H1HTTC90R9F.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM90R9F (MFR Recommended Substitute): This part is the manufacturer-recommended successor from KOA Speer Electronics, Inc., maintaining the same series designation (RK73H) and all critical electrical specifications. The component holds Active product status, ensuring continued availability and manufacturing support. It is suitable for applications requiring KOA Speer sourcing continuity and maintains full AEC-Q200 automotive qualification. Note that moisture resistance is not explicitly specified for this variant.

AC0201FR-0790R9L (Direct Substitute): This YAGEO component provides a cross-manufacturer alternative with identical electrical and mechanical specifications, including explicit moisture resistance designation. It carries Active product status and full AEC-Q200 automotive qualification. This part is appropriate for applications where multi-source qualification is required or where YAGEO supply chain integration is preferred.

Both substitute parts are suitable for direct replacement in applications originally designed for the RK73H1HTTC90R9F, provided that no design-specific constraints mandate KOA Speer sourcing.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM90R9F be used as a direct replacement for RK73H1HTTC90R9F?

A: Yes. Both parts share identical resistance (90.9 Ohms), tolerance (±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and AEC-Q200 qualification. The primary difference is product status: RK73H1HTTCM90R9F is Active, while RK73H1HTTC90R9F is Not For New Designs. The RK73H1HTTCM90R9F is the manufacturer-recommended upgrade path.

Q: What is the difference between RK73H1HTTC90R9F and AC0201FR-0790R9L?

A: Both parts meet all critical electrical and mechanical specifications. The primary differences are manufacturer (KOA Speer vs. YAGEO) and explicit moisture resistance designation (specified for AC0201FR-0790R9L). Both hold Active product status and AEC-Q200 qualification. Selection depends on supply chain requirements and multi-source qualification needs.

Q: Are all substitute parts qualified to AEC-Q200?

A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification, meeting the same reliability and qualification standards as the original RK73H1HTTC90R9F.

Q: Can these parts be used interchangeably in automotive applications?

A: Yes, provided the application does not impose manufacturer-specific constraints. All substitute parts maintain AEC-Q200 qualification, identical electrical specifications, and compatible 0201 package dimensions. Verify that your design documentation does not restrict sourcing to a specific manufacturer.

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

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed parts carry this rating, meaning they can be stored and handled without time-dependent moisture sensitivity constraints, simplifying inventory and supply chain management.

Q: Are there any compliance differences between the main part and substitutes?

A: All parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications. No compliance barriers exist for substitution.