RK73B1HTTC623G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC623G is a 62 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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the product line.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

RK73B1HTTC623G

KOA Speer Electronics, Inc.In Stock: 959RK73B1HTTC623G Datasheet

Current PartRFQ

RK73B1HTTCM623G

KOA Speer Electronics, Inc.In Stock: 822RK73B1HTTCM623G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC623G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (62 kOhms), tolerance (±2%), power rating (0.05W), and temperature coefficient (±200ppm/°C) must remain identical. Operating temperature range (-55°C ~ 155°C) must be maintained or exceeded.

Mechanical Parameters: Package format must be 0201 (0603 Metric) with identical physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and height (0.010" maximum seated height / 0.26mm).

Composition & Construction: Thick film construction is required to maintain electrical performance characteristics.

Compliance & Ratings: AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating must be preserved.

Substitute parts must originate from the same manufacturer series (RK73B) to ensure process consistency and performance reliability. Product status transition from "Not For New Designs" to "Active" indicates the substitute represents the current production equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM623G is the direct equivalent substitute for the RK73B1HTTC623G. Both parts are manufactured by KOA Speer Electronics, Inc. within the RK73B series and maintain identical electrical, mechanical, and thermal specifications. The substitute part is currently in Active product status, whereas the original part is designated "Not For New Designs," indicating the substitute represents the current production alternative.

For applications requiring AEC-Q200 automotive qualification, ROHS3 compliance, and unlimited moisture sensitivity rating, the RK73B1HTTCM623G provides full functional and physical compatibility. The substitute part carries the same certifications and regulatory compliance status as the original part.

Inventory availability differs between the two parts: the original part has 890 pieces in stock, while the substitute has 732 pieces in stock. Selection between these parts should be based on supply chain requirements and design phase status. New designs should transition to the RK73B1HTTCM623G due to its Active product status.

Frequently Asked Questions (FAQ)

Q: Can the RK73B1HTTCM623G be used as a direct replacement for the RK73B1HTTC623G in existing designs?

A: Yes. Both parts are electrically and mechanically identical with matching resistance (62 kOhms ±2%), power rating (0.05W), package format (0201), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 155°C). They are interchangeable at the component level.

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

A: This designation indicates the RK73B1HTTC623G has been superseded in the manufacturer's product line. The RK73B1HTTCM623G is the current Active equivalent. New designs should specify the substitute part to ensure long-term supply availability and manufacturer support.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical 0201 package dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). They are footprint-compatible for PCB assembly without layout modifications.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the RK73B1HTTC623G and RK73B1HTTCM623G carry AEC-Q200 automotive qualification and are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

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

A: The primary difference is product status and manufacturing designation. The RK73B1HTTCM623G represents the current Active production equivalent, while the RK73B1HTTC623G is a legacy part number. The "M" designation in the substitute part number indicates the current manufacturing variant. All electrical and mechanical specifications remain identical.

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

A: Yes. Since both parts are electrically and mechanically equivalent with identical specifications, they can be used interchangeably within the same assembly. However, for supply chain consistency, specifying a single part number is recommended.