RK73B1HTTC244G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC244G is a 240 kOhms ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). This component is manufactured by KOA Speer Electronics, Inc. and meets automotive AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Identifying equivalent substitute parts is necessary for ongoing support of existing designs, maintenance applications, and inventory management where this legacy component remains in use.

Substiute Parts

RK73B1HTTC244G

KOA Speer Electronics, Inc.In Stock: 1099RK73B1HTTC244G Datasheet

Current PartRFQ

RK73B1HTTCM244G

KOA Speer Electronics, Inc.In Stock: 1208RK73B1HTTCM244G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC244G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 240 kOhms (exact match required)
• Tolerance: ±2% (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 Parameters:

• Package format: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)

Compliance & Certification:

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

Substitute parts must match all electrical and mechanical parameters without exception. Compliance certifications must be maintained or exceed the original specification.

Parameter Comparison

Engineering Selection Recommendations

RK73B1HTTCM244G is the direct substitute for RK73B1HTTC244G. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73B series and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product lifecycle status: RK73B1HTTC244G is designated "Not For New Designs," while RK73B1HTTCM244G carries "Active" status. This indicates that RK73B1HTTCM244G represents the current production equivalent and is the recommended selection for ongoing applications.

Both parts satisfy automotive AEC-Q200 qualification requirements and maintain ROHS3 compliance with MSL 1 rating. Substitution between these parts does not introduce any electrical, thermal, or mechanical incompatibilities. Component selection should prioritize RK73B1HTTCM244G for new procurement and design continuity, while RK73B1HTTC244G remains suitable for existing inventory utilization and legacy system support where stock availability permits.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM244G be used as a direct replacement for RK73B1HTTC244G?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 240 kOhms ±2%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, and -55°C ~ 155°C operating range. Both maintain AEC-Q200 automotive qualification and ROHS3 compliance.

Q: Why is RK73B1HTTC244G marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product lifecycle. RK73B1HTTCM244G is the active equivalent. For new designs and ongoing procurement, RK73B1HTTCM244G should be specified.

Q: Are there any package or footprint differences between these parts?

A: No. Both components use the 0201 (0603 Metric) package format with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are interchangeable.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC244G and RK73B1HTTCM244G carry AEC-Q200 automotive qualification and are suitable for automotive applications requiring this certification.

Q: What is the moisture sensitivity level for these components?

A: Both parts have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or shelf life.

Q: Can these parts be used interchangeably in existing assemblies?

A: Yes. Electrical performance, thermal characteristics, and mechanical compatibility are identical. Direct substitution in existing designs and assemblies is supported without circuit modification or re-qualification.