RK73H1HTTC6040F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC6040F is a 604 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with 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 The part is classified as "Not For New Designs," indicating it has been superseded.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

RK73H1HTTC6040F

KOA Speer Electronics, Inc.In Stock: 5994RK73H1HTTC6040F Datasheet

Current PartRFQ

RK73H1HTTCM6040F

KOA Speer Electronics, Inc.In Stock: 795RK73H1HTTCM6040F Datasheet

MFR RecommendedRFQ

AC0201FR-07604RL

YAGEOIn Stock: 794AC0201FR-07604RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC6040F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 604 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
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height (seated max): 0.010" (0.26mm)
• Terminations: 2

All substitute parts listed maintain these specifications without deviation. Substitutes are grouped into two categories: manufacturer-recommended alternatives and direct cross-reference parts from alternative suppliers.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM6040F (KOA Speer Electronics, Inc. - Manufacturer Recommended)

This part is the manufacturer-recommended substitute for the RK73H1HTTC6040F. It maintains identical electrical specifications and package dimensions. The primary distinction is product status: RK73H1HTTCM6040F is classified as Active, whereas the original part is Not For New Designs. Both parts carry ROHS3 compliance and AEC-Q200 automotive qualification. Selection of this part ensures continuity with the original manufacturer's product line and is appropriate for both legacy system support and new applications requiring this resistance value and package type.

AC0201FR-07604RL (YAGEO - Direct Cross-Reference)

This YAGEO part provides direct electrical and mechanical equivalence to the RK73H1HTTC6040F. All critical parameters align: 604 Ohm resistance, ±1% tolerance, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C to 155°C operating range, and AEC-Q200 automotive qualification. The AC0201FR-07604RL includes moisture-resistant construction matching the original part specification. This part is classified as Active and represents a viable alternative from a different manufacturer when KOA supply is constrained.

Selection between these substitutes should be based on supply availability, lead time requirements, and established supplier relationships. Both parts satisfy the electrical and mechanical requirements for direct substitution in automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM6040F be used as a direct replacement for RK73H1HTTC6040F?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., and share identical electrical specifications (604 Ohms ±1%, 0.05W), package dimensions (0201), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The primary difference is product status: RK73H1HTTCM6040F is Active while the original is Not For New Designs.

Q: Is AC0201FR-07604RL compatible with circuits designed for RK73H1HTTC6040F?

A: Yes. AC0201FR-07604RL meets all electrical and mechanical specifications required for substitution: 604 Ohm resistance, ±1% tolerance, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C to 155°C operating range, AEC-Q200 rating, and moisture-resistant construction. Physical dimensions and termination count are identical.

Q: What is the significance of the "Not For New Designs" status on RK73H1HTTC6040F?

A: This designation indicates the part has been superseded by newer alternatives. While the part remains functional and available in inventory, manufacturers recommend using active-status alternatives for new circuit designs. For legacy system maintenance and repair, the original part remains acceptable if supply is available.

Q: Are all three parts suitable for automotive applications?

A: Yes. RK73H1HTTC6040F, RK73H1HTTCM6040F, and AC0201FR-07604RL all carry AEC-Q200 automotive qualification and are rated for the -55°C to 155°C operating temperature range required in automotive environments.

Q: Does moisture resistance differ between the substitute parts?

A: RK73H1HTTC6040F and AC0201FR-07604RL both specify moisture-resistant construction. RK73H1HTTCM6040F does not explicitly list moisture resistance in the provided specifications. For applications requiring moisture resistance, AC0201FR-07604RL or the original RK73H1HTTC6040F are preferred.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All three parts share identical 0201 (0603 Metric) package specifications, including dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and height (0.010" max / 0.26mm max). They are compatible with standard 0201 pick-and-place equipment and PCB footprints.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.