Equivalent & Substitute Parts for RK73H1HTTC4533F

Part Overview

The RK73H1HTTC4533F is a 453 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0.60mm x 0.30mm metric). This component meets AEC-Q200 automotive qualification standards and features moisture-resistant construction suitable for automotive and industrial applications operating across -55°C to 155°C.

The RK73H1HTTC4533F carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to support existing designs, manage supply chain continuity, and access components with active production status where applicable.

Substiute Parts

RK73H1HTTC4533F

KOA Speer Electronics, Inc.In Stock: 760RK73H1HTTC4533F Datasheet

Current PartRFQ

RK73H1HTTCM4533F

KOA Speer Electronics, Inc.In Stock: 706RK73H1HTTCM4533F Datasheet

MFR RecommendedRFQ

AC0201FR-07453KL

YAGEOIn Stock: 838AC0201FR-07453KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC4533F are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 453 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Equivalence Criteria:

• Package / Case: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) (exact match required)
• Height - Seated (Max): 0.010" (0.26mm) (exact match required)

Compliance & Certification Criteria:

• AEC-Q200 automotive qualification (required for automotive applications)
• RoHS3 compliance (required for regulatory conformance)
• Moisture Sensitivity Level MSL 1 (required for storage and handling compatibility)

Substitutes must match all electrical, mechanical, and compliance parameters. Differences in product status (Active vs. Not For New Designs) do not affect functional equivalence but may influence supply availability and long-term support.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM4533F (KOA Speer Electronics, Inc.) - MFR Recommended Substitute:

This part is the manufacturer-recommended equivalent from KOA Speer Electronics, Inc. It maintains identical electrical specifications (453 kOhms ±1%, 0.05W, ±200ppm/°C, -55°C ~ 155°C) and mechanical form factor (0201 package). The primary distinction is active product status versus the obsolete status of RK73H1HTTC4533F. Both parts carry AEC-Q200 automotive qualification and ROHS3 compliance. Selection of RK73H1HTTCM4533F is appropriate for designs requiring KOA Speer sourcing continuity and long-term availability assurance.

AC0201FR-07453KL (YAGEO) - Direct Manufacturer Substitute:

This YAGEO part provides full electrical and mechanical equivalence to RK73H1HTTC4533F. It matches all critical parameters: 453 kOhms ±1%, 0.05W power rating, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, 0201 package, thick film composition, AEC-Q200 automotive rating, ROHS3 compliance, and MSL 1 moisture sensitivity level. The AC0201FR-07453KL carries active product status and includes moisture-resistant construction. This part is suitable for applications requiring cross-manufacturer sourcing flexibility or where YAGEO supply chain availability is preferred.

Selection Basis:

Both substitute parts satisfy all electrical, mechanical, and compliance requirements specified for the RK73H1HTTC4533F. Selection between them depends on supply chain strategy, preferred manufacturer relationship, and inventory management objectives. Both parts are qualified for automotive applications and meet all regulatory requirements applicable to the original component.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4533F be used as a direct replacement for RK73H1HTTC4533F?

A: Yes. RK73H1HTTCM4533F is the manufacturer-recommended equivalent from KOA Speer Electronics, Inc. It provides identical electrical performance (453 kOhms ±1%, 0.05W, ±200ppm/°C) and mechanical compatibility (0201 package). Both parts meet AEC-Q200 automotive qualification and ROHS3 compliance. The primary difference is product status: RK73H1HTTCM4533F is active, while RK73H1HTTC4533F is not for new designs.

Q: Is AC0201FR-07453KL from YAGEO electrically equivalent to the KOA part?

A: Yes. AC0201FR-07453KL matches all electrical specifications: 453 kOhms resistance, ±1% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient, and -55°C ~ 155°C operating temperature range. It also matches mechanical requirements (0201 package, thick film composition) and compliance certifications (AEC-Q200, ROHS3, MSL 1).

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by exact matching of: resistance value (453 kOhms), tolerance (±1%), power rating (0.05W), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), package type (0201), composition (thick film), AEC-Q200 automotive rating, ROHS3 compliance, and MSL 1 moisture sensitivity level.

Q: Can I substitute a part with different moisture resistance specifications?

A: No. The original RK73H1HTTC4533F specifies moisture-resistant construction. AC0201FR-07453KL also includes moisture-resistant features. RK73H1HTTCM4533F does not explicitly specify moisture resistance in the provided data. For applications requiring moisture-resistant construction, AC0201FR-07453KL is the preferred substitute.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive qualification, which certifies them for automotive-grade reliability and performance. They are suitable for automotive circuit applications within the specified operating temperature range (-55°C ~ 155°C).

Q: What is the difference between "Not For New Designs" and "Active" product status?

A: "Not For New Designs" indicates the component is in end-of-life phase and should not be used in new circuit designs. "Active" status indicates the part is in current production with ongoing manufacturer support. For new designs, select RK73H1HTTCM4533F or AC0201FR-07453KL. For existing designs using RK73H1HTTC4533F, either substitute part provides equivalent functionality.

Q: Do all parts have the same physical dimensions?

A: Yes. All three parts conform to the 0201 package specification: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). They are mechanically interchangeable on PCB layouts designed for 0201 components.

Q: What is MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates the component has unlimited shelf life under normal storage conditions. No special moisture-control storage or baking procedures are required before soldering. All three parts carry MSL 1 rating, ensuring consistent handling requirements.