RK73B1HTTC620G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC620G is a 62 Ohm ±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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the product lifecycle.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 electrical and mechanical compatibility.

Substiute Parts

RK73B1HTTC620G

KOA Speer Electronics, Inc.In Stock: 1004RK73B1HTTC620G Datasheet

Current PartRFQ

RK73B1HTTCM620G

KOA Speer Electronics, Inc.In Stock: 1049RK73B1HTTCM620G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC620G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (62 Ohms), 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.

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

Compliance & Ratings: AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating must be maintained for applications requiring automotive-grade reliability and environmental compliance.

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

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM620G is the direct substitute for RK73B1HTTC620G. 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 equivalent.

For applications requiring automotive-grade reliability, the substitute maintains full AEC-Q200 qualification. ROHS3 compliance and MSL 1 rating are preserved, ensuring compatibility with modern manufacturing processes and environmental regulations. The identical package format (0201 / 0603 Metric) and physical dimensions enable direct PCB footprint compatibility without layout modifications.

Selection of the substitute part is appropriate for both new designs and replacement applications where the original part is no longer available. No design changes, circuit modifications, or performance trade-offs are introduced by this substitution.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM620G be used as a direct replacement for RK73B1HTTC620G?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value (62 Ohms), tolerance (±2%), power rating (0.05W), package format (0201), and thermal specifications. The substitute is the current Active production equivalent.

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

A: The part numbers differ only in the suffix designation (TC versus TCM). This suffix change reflects a product lifecycle transition within the RK73B series. The original part (RK73B1HTTC620G) is classified "Not For New Designs," while the substitute (RK73B1HTTCM620G) is Active. All functional and performance parameters remain identical.

Q: Are there any PCB layout or assembly considerations when switching to the substitute?

A: No. The substitute maintains identical physical dimensions (0.024" L x 0.012" W, 0.60mm x 0.30mm) and package format (0201 / 0603 Metric). Existing PCB footprints, pick-and-place programs, and reflow profiles require no modification.

Q: Does the substitute meet automotive qualification requirements?

A: Yes. The substitute part maintains full AEC-Q200 automotive qualification, identical to the original part. It is suitable for automotive applications requiring automotive-grade reliability standards.

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

A: The substitute part (RK73B1HTTCM620G) has 956 pieces in stock as new original inventory, compared to 916 pieces of the original part. Both are available for immediate procurement.

Q: Are there any compliance or environmental differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL 1 (Unlimited) moisture sensitivity ratings. Environmental and regulatory compliance is maintained across the substitution.