RK73H1HTTC4303F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4303F is a 430 kOhms ±1% thick film chip resistor in 0201 package (0.60mm x 0.30mm) rated for 0.05W power dissipation. This component is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is classified as "Not For New Designs," indicating it has been superseded. Identifying equivalent and substitute parts is necessary for ongoing support of legacy systems and for sourcing alternatives when the original part becomes unavailable.

Substiute Parts

RK73H1HTTC4303F

KOA Speer Electronics, Inc.In Stock: 1039RK73H1HTTC4303F Datasheet

Current PartRFQ

RK73H1HTTCM4303F

KOA Speer Electronics, Inc.In Stock: 1144RK73H1HTTCM4303F Datasheet

MFR RecommendedRFQ

AC0201FR-07430KL

YAGEOIn Stock: 927AC0201FR-07430KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC4303F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 430 kOhms
• 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
• MSL rating: 1 (Unlimited)

All substitute parts listed maintain identical electrical specifications and physical dimensions, ensuring direct functional equivalence in automotive and industrial applications requiring AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Manufacturer Recommended): RK73H1HTTCM4303F from KOA Speer Electronics is the manufacturer-recommended upgrade path. This part maintains identical electrical and mechanical specifications while offering Active product status, indicating ongoing manufacturer support and availability. Selection of this part is appropriate for new production runs and legacy system support.

Cross-Manufacturer Alternative: AC0201FR-07430KL from YAGEO provides equivalent functionality with Active product status. This part meets all electrical specifications, AEC-Q200 automotive qualification, and RoHS compliance requirements. Cross-manufacturer substitution is valid where supply chain diversification or cost optimization is required, provided design validation confirms compatibility with existing circuit requirements.

Original Part Consideration: RK73H1HTTC4303F remains suitable for repair and maintenance of existing systems where original component matching is specified. However, due to "Not For New Designs" status, this part should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4303F directly replace RK73H1HTTC4303F in existing designs? A: Yes. Both parts share identical electrical specifications (430 kOhms ±1%, 0.05W), physical dimensions (0201 package), temperature characteristics (±200ppm/°C, -55°C ~ 155°C), and automotive qualifications (AEC-Q200). Direct substitution is valid without circuit modification.

Q: Is AC0201FR-07430KL from YAGEO compatible with designs specified for KOA parts? A: Yes. AC0201FR-07430KL meets all critical parameters: 430 kOhms ±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 electrically and mechanically valid.

Q: What is the significance of "Not For New Designs" status on RK73H1HTTC4303F? A: This designation indicates the manufacturer has superseded this part number. While the component remains functional and available in limited inventory, it should not be selected for new product development. RK73H1HTTCM4303F is the recommended replacement for new designs.

Q: Are all three parts suitable for automotive applications? A: Yes. All three parts carry AEC-Q200 qualification, moisture-resistant construction, and operate across the automotive temperature range (-55°C ~ 155°C). All are suitable for automotive circuit applications.

Q: What is the difference between RK73H1HTTC4303F and RK73H1HTTCM4303F? A: The primary difference is product status. RK73H1HTTCM4303F is Active with ongoing manufacturer support, while RK73H1HTTC4303F is Not For New Designs. Electrical and mechanical specifications are identical.

Q: Does MSL rating 1 (Unlimited) affect handling or storage? A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. These parts do not require special moisture control during storage or handling, simplifying logistics and inventory management.