RK73B1HTTC473G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC473G is a 47 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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

RK73B1HTTC473G

KOA Speer Electronics, Inc.In Stock: 810RK73B1HTTC473G Datasheet

Current PartRFQ

RK73B1HTTCM473G

KOA Speer Electronics, Inc.In Stock: 828RK73B1HTTCM473G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC473G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (47 kOhms), tolerance (±2%), and power rating (0.05W) must be identical. Temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C) establish thermal performance boundaries.

Mechanical Parameters: Package format (0201 / 0603 Metric) and physical dimensions (0.024" L x 0.012" W, height 0.010" max) must match to ensure PCB footprint compatibility and assembly process compatibility.

Compliance Parameters: AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating are mandatory for applications requiring automotive-grade reliability and environmental compliance.

Composition: Thick film construction must be maintained to preserve electrical characteristics and thermal behavior.

Substitute parts must satisfy all these parameters without deviation. Parts differing in any of these specifications are not equivalent and cannot be used as direct replacements.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM473G is the manufacturer-recommended substitute for the RK73B1HTTC473G. Both parts are manufactured by KOA Speer Electronics, Inc. and maintain identical electrical, mechanical, and compliance specifications. The primary distinction is product status: the original part is classified as "Not For New Designs," while the substitute is Active.

For new designs and ongoing production, the RK73B1HTTCM473G should be selected. This part maintains full compatibility with existing PCB layouts, assembly processes, and electrical performance requirements while ensuring access to current manufacturing and supply chain support.

For existing designs currently using RK73B1HTTC473G, transition to RK73B1HTTCM473G is supported without design modification, as all functional and mechanical parameters are equivalent.

Both parts satisfy automotive AEC-Q200 qualification and ROHS3 compliance requirements, making them suitable for applications requiring automotive-grade reliability and environmental regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM473G be used as a direct replacement for RK73B1HTTC473G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The RK73B1HTTCM473G maintains the same 47 kOhms resistance, ±2% tolerance, 0.05W power rating, 0201 package format, and AEC-Q200 automotive qualification. No PCB layout or assembly process changes are required.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. RK73B1HTTC473G is classified as "Not For New Designs," indicating it has been superseded. RK73B1HTTCM473G is the active replacement part. All electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry AEC-Q200 automotive qualification, and have MSL 1 (Unlimited) moisture sensitivity rating. Compliance profiles are identical.

Q: Can these parts be mixed in the same production batch?

A: Yes. Since all electrical, mechanical, and compliance parameters are equivalent, both parts can be used interchangeably within the same assembly without affecting performance or reliability.

Q: What is the inventory status for the substitute part?

A: RK73B1HTTCM473G has 791 pieces in stock as new original inventory, compared to 701 pieces for the original part. The substitute part offers improved supply availability.

Q: Are there any thermal or frequency performance differences?

A: No. Both parts have identical temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C). Thermal and frequency performance characteristics are equivalent.