RK73B1HTTC304G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC304G is a 300 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 The part is currently classified as Not For New Designs, indicating it has been superseded in the product lifecycle.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 to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that maintain identical electrical and mechanical specifications.

Substiute Parts

RK73B1HTTC304G

KOA Speer Electronics, Inc.In Stock: 1190RK73B1HTTC304G Datasheet

Current PartRFQ

RK73B1HTTCM304G

KOA Speer Electronics, Inc.In Stock: 842RK73B1HTTCM304G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC304G is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value (300 kOhms), tolerance (±2%), and power rating (0.05W) must be identical. Temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C) define thermal performance boundaries and must match exactly.

Mechanical Specifications: Package format (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and seated height (0.010" / 0.26mm maximum) must be identical to ensure PCB footprint compatibility and assembly process compatibility.

Compliance & Ratings: Automotive AEC-Q200 qualification, RoHS3 compliance, and Moisture Sensitivity Level 1 are mandatory for equivalent substitution in automotive and regulated applications.

Composition: Thick film construction must be maintained to preserve electrical performance characteristics and temperature stability.

Substitute parts must originate from the same manufacturer series (RK73B) or equivalent qualified alternatives meeting all specified parameters without exception.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM304G is the direct equivalent substitute for the RK73B1HTTC304G. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73B series and maintain identical electrical, mechanical, and compliance specifications.

The primary distinction is product lifecycle status: RK73B1HTTC304G is classified as Not For New Designs, while RK73B1HTTCM304G maintains Active status. This indicates that RK73B1HTTCM304G represents the current production alternative and is the recommended selection for new designs, design revisions, and long-term supply chain continuity.

Both parts satisfy automotive AEC-Q200 qualification requirements and ROHS3 compliance, making them suitable for regulated automotive and industrial applications. The identical electrical specifications (300 kOhms ±2%, 0.05W, ±200ppm/°C) and mechanical package (0201 / 0603 Metric) ensure direct functional and physical interchangeability without circuit redesign or PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM304G be used as a direct replacement for RK73B1HTTC304G in existing designs?

A: Yes. Both components are electrically and mechanically identical. The RK73B1HTTCM304G can be substituted in existing designs without modification to schematics, PCB layouts, or assembly processes. The only difference is product lifecycle status.

Q: Why is RK73B1HTTC304G marked as Not For New Designs?

A: This designation indicates the part has been superseded in the manufacturer's product lifecycle. RK73B1HTTCM304G is the active equivalent. For new designs, RK73B1HTTCM304G should be specified to ensure long-term availability and supply chain stability.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both components are packaged in 0201 format (0603 Metric) with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). They are footprint-compatible and require no PCB layout changes.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both RK73B1HTTC304G and RK73B1HTTCM304G are AEC-Q200 qualified and ROHS3 compliant, meeting automotive and regulated application requirements.

Q: What is the difference in packaging between these parts?

A: The main part specifies Tape & Reel (TR) packaging. The substitute part does not specify packaging format in the provided data. Confirm packaging requirements with the supplier to ensure compatibility with assembly processes.

Q: Are the electrical specifications identical?

A: Yes. Both parts are 300 kOhms ±2% thick film resistors rated at 0.05W (1/20W) with ±200ppm/°C temperature coefficient and -55°C ~ 155°C operating temperature range.