Equivalent & Substitute Parts for RK73H1HTTC44R2F

Part Overview

The RK73H1HTTC44R2F is a 44.2 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 designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC44R2F carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to support ongoing production requirements, field repairs, and design continuity for existing applications where this resistor is specified.

Substiute Parts

RK73H1HTTC44R2F

KOA Speer Electronics, Inc.In Stock: 20133RK73H1HTTC44R2F Datasheet

Current PartRFQ

RK73H1HTTCM44R2F

KOA Speer Electronics, Inc.In Stock: 1131RK73H1HTTCM44R2F Datasheet

MFR RecommendedRFQ

AC0201FR-0744R2L

YAGEOIn Stock: 982AC0201FR-0744R2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC44R2F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 44.2 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 identified substitute parts meet these parameters without exception. Substitution is valid when all electrical characteristics, package dimensions, thermal specifications, and compliance certifications align with the original component.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM44R2F (KOA Speer Electronics, Inc.)

This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains identical electrical specifications and package configuration to the RK73H1HTTC44R2F. The primary distinction is active product status, indicating ongoing manufacturing support and availability. This part carries ROHS3 compliance and MSL 1 rating. Note that moisture resistance is not explicitly listed in the provided specifications for this variant, which may be a consideration for moisture-critical applications.

AC0201FR-0744R2L (YAGEO)

This part is a direct cross-reference alternative from YAGEO, meeting all electrical and mechanical parameters of the original component. It maintains AEC-Q200 automotive qualification, moisture-resistant construction, ROHS3 compliance, and MSL 1 rating. The AC0201FR-0744R2L carries active product status with documented inventory availability. This part is suitable for direct substitution in applications requiring automotive-grade, moisture-resistant thick film resistors.

Both substitute parts satisfy the complete parameter set required for functional and mechanical compatibility with the RK73H1HTTC44R2F.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM44R2F be used as a direct replacement for RK73H1HTTC44R2F?

A: Yes. Both parts share identical resistance (44.2 Ohms), tolerance (±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), AEC-Q200 rating, RoHS compliance, and MSL 1 rating. The primary difference is product status; RK73H1HTTCM44R2F is active while RK73H1HTTC44R2F is not for new designs.

Q: Is AC0201FR-0744R2L compatible with RK73H1HTTC44R2F in automotive applications?

A: Yes. AC0201FR-0744R2L meets all specified parameters including AEC-Q200 automotive qualification, moisture-resistant thick film construction, identical electrical characteristics, and equivalent package dimensions. Both components are ROHS3 compliant with MSL 1 rating.

Q: What is the significance of the 0201 package designation?

A: The 0201 package (0603 Metric) specifies the physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). All substitute parts use this identical package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Are all substitute parts moisture-resistant?

A: RK73H1HTTC44R2F and AC0201FR-0744R2L are explicitly specified as moisture-resistant. RK73H1HTTCM44R2F does not list moisture resistance in the provided specifications. For applications requiring moisture-resistant construction, AC0201FR-0744R2L or the original RK73H1HTTC44R2F are appropriate selections.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. All three parts meet this standard, confirming suitability for automotive applications requiring reliability and performance validation under defined environmental and operational conditions.

Q: Can these parts be used interchangeably in production?

A: Yes, provided the application does not have specific manufacturer preferences or supply chain constraints. All three parts satisfy identical electrical, mechanical, and compliance requirements. Selection may be based on availability, lead time, or inventory status.