Equivalent & Substitute Parts for RK73H1HTTC3603F

Part Overview

The RK73H1HTTC3603F is a 360 kOhms ±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The main part carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Substiute Parts

RK73H1HTTC3603F

KOA Speer Electronics, Inc.In Stock: 37368RK73H1HTTC3603F Datasheet

Current PartRFQ

RK73H1HTTCM3603F

KOA Speer Electronics, Inc.In Stock: 1087RK73H1HTTCM3603F Datasheet

MFR RecommendedRFQ

AC0201FR-07360KL

YAGEOIn Stock: 1130AC0201FR-07360KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC3603F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 360 kOhms (exact match required)
• Tolerance: ±1% (minimum requirement)
• Power rating: 0.05W / 1/20W (minimum requirement)
• Package: 0201 (0603 Metric) (exact match required for PCB compatibility)
• Composition: Thick Film (electrical characteristic match)
• Temperature coefficient: ±200ppm/°C (maximum acceptable drift)
• Operating temperature range: -55°C ~ 155°C (minimum requirement)
• AEC-Q200 automotive rating (mandatory for automotive applications)
• RoHS3 compliance (regulatory requirement)

Acceptable Variations:

• Moisture resistance: Present in main part; acceptable in substitutes but not required if other parameters match
• Product status: Active status preferred for new sourcing; "Not For New Designs" status acceptable for legacy support
• Packaging format: Tape & Reel (TR) or alternative packaging acceptable if component specifications remain identical

Identified substitutes meet all mandatory parameters and maintain full electrical and mechanical compatibility with the original part.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM3603F (KOA Speer Electronics, Inc.)

This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains identical electrical specifications and package dimensions as the main part. The primary distinction is active product status, indicating ongoing manufacturing support and availability. This part is suitable for new production runs and long-term supply chain planning. The absence of explicit moisture-resistant designation in the specification does not indicate reduced performance; it reflects specification documentation differences between product variants within the same series.

AC0201FR-07360KL (YAGEO)

This part provides cross-manufacturer substitution from YAGEO, a qualified alternative supplier. It matches all critical electrical and mechanical parameters, including moisture-resistant construction identical to the main part. Active product status ensures supply continuity. This option is appropriate when KOA Speer parts are unavailable or when multi-source qualification is required for supply chain resilience. Both manufacturers' parts carry AEC-Q200 automotive qualification and ROHS3 compliance, supporting equivalent reliability in automotive applications.

Selection Basis:

Both substitutes are qualified for direct replacement based on:

• Identical resistance, tolerance, and power rating specifications
• Matching 0201 package footprint for PCB assembly compatibility
• Equivalent temperature coefficient and operating range
• AEC-Q200 automotive qualification for reliability assurance
• ROHS3 compliance for regulatory alignment
• Active product status ensuring manufacturing continuity

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3603F be used as a direct replacement for RK73H1HTTC3603F?

A: Yes. RK73H1HTTCM3603F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It provides identical electrical specifications (360 kOhms ±1%, 0.05W), matching package (0201), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The primary difference is active product status, making it the preferred choice for ongoing production.

Q: What is the difference between RK73H1HTTC3603F and RK73H1HTTCM3603F?

A: Both parts are 360 kOhms ±1% thick film resistors in 0201 packages from KOA Speer Electronics, Inc., with identical electrical and thermal characteristics. The main difference is product lifecycle status: RK73H1HTTC3603F is marked "Not For New Designs," while RK73H1HTTCM3603F carries "Active" status. The "M" designation in the part number indicates a variant within the RK73H series. Both meet AEC-Q200 and ROHS3 requirements.

Q: Can YAGEO AC0201FR-07360KL replace KOA parts in automotive applications?

A: Yes. AC0201FR-07360KL meets all substitution criteria for automotive use. It provides 360 kOhms ±1% resistance in a 0201 package with ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, and ROHS3 compliance. YAGEO is a qualified alternative supplier for this specification class. Cross-manufacturer substitution is appropriate when supply constraints or multi-source requirements apply.

Q: Does the absence of "moisture resistant" in RK73H1HTTCM3603F specifications indicate reduced environmental protection?

A: No. The specification documentation reflects different labeling conventions between product variants. Both RK73H1HTTC3603F and RK73H1HTTCM3603F are thick film resistors from the same RK73H series with identical construction and environmental performance. The presence or absence of explicit "moisture resistant" designation in the datasheet does not indicate functional differences in moisture protection.

Q: Are all three parts suitable for the same PCB assembly process?

A: Yes. All three parts share identical 0201 (0603 Metric) package dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). They are compatible with standard SMD assembly equipment and reflow processes. MSL rating of 1 (Unlimited) for all parts indicates no special moisture handling requirements during assembly.

Q: What compliance certifications apply to all substitute parts?

A: All three parts carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 (Unlimited) rating. REACH status is "REACH Unaffected" for all parts. ECCN classification is EAR99 and HTSUS code is 8533.21.0030 for all parts. These certifications ensure regulatory alignment and automotive reliability standards across all substitutes.