Equivalent & Substitute Parts for RK73B1HTTC474G

Part Overview

The RK73B1HTTC474G is a 470 kOhms ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format, manufactured by KOA Speer Electronics, Inc. This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73B1HTTC474G

KOA Speer Electronics, Inc.In Stock: 977RK73B1HTTC474G Datasheet

Current PartRFQ

RK73B1HTTCM474G

KOA Speer Electronics, Inc.In Stock: 1201RK73B1HTTCM474G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC474G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 470 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 rating: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts must match all parameters listed above. The primary distinction between the main part and its substitute is product status and availability.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM474G is the direct equivalent substitute for the RK73B1HTTC474G. Both parts are manufactured by KOA Speer Electronics, Inc., belong to the RK73B series, and are electrically and mechanically identical across all specified parameters.

The primary distinction is product lifecycle status: the original part (RK73B1HTTC474G) is designated "Not For New Designs," while the substitute (RK73B1HTTCM474G) maintains "Active" status. This indicates the substitute represents the current production alternative within the same product family.

Both parts satisfy automotive AEC-Q200 qualification requirements, ROHS3 compliance, and MSL 1 moisture sensitivity classification. Selection between these parts should be based on design phase requirements and supply chain availability. For new designs, the active substitute part is the appropriate choice. For legacy design support or existing inventory management, either part may be used interchangeably without electrical or mechanical redesign.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM474G be used as a direct replacement for RK73B1HTTC474G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. All critical parameters—resistance value, tolerance, power rating, temperature coefficient, operating temperature range, package format, and automotive certification—are equivalent. Direct substitution is possible without circuit modification.

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

A: This designation indicates the part has been superseded by the manufacturer. While existing inventory remains available and functional, new product development should utilize the active substitute part (RK73B1HTTCM474G) to ensure long-term supply continuity and manufacturer support.

Q: Are there any differences in compliance or certification between these parts?

A: No. Both parts are ROHS3 compliant, AEC-Q200 qualified, and carry MSL 1 moisture sensitivity rating. Compliance profiles are identical.

Q: Does the 0201 package format have any compatibility considerations?

A: The 0201 (0603 Metric) package is a miniature surface-mount format measuring 0.024" L x 0.012" W (0.60mm x 0.30mm). Both parts use this identical package. Compatibility depends on PCB design and assembly equipment capability to handle this small form factor, not on differences between the two parts.

Q: Which part should be selected for new automotive designs?

A: The RK73B1HTTCM474G (active status) is the appropriate selection for new designs. This ensures alignment with current manufacturer production and support lifecycle.