Equivalent & Substitute Parts for RK73B1HTTC243G

Part Overview

The RK73B1HTTC243G is a 24 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," which necessitates identification of active equivalent alternatives for ongoing production and new design implementations. The substitute part maintains identical electrical and mechanical specifications while offering active product status.

Substiute Parts

RK73B1HTTC243G

KOA Speer Electronics, Inc.In Stock: 1177RK73B1HTTC243G Datasheet

Current PartRFQ

RK73B1HTTCM243G

KOA Speer Electronics, Inc.In Stock: 882RK73B1HTTCM243G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC243G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 24 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)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) (exact match required)
• Height - Seated (Max): 0.010" (0.26mm) (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Certification:

• Automotive AEC-Q200 qualification (required for automotive applications)
• RoHS3 compliance (required for regulatory adherence)
• Moisture Sensitivity Level MSL 1 (required for storage and handling compatibility)

The substitute part RK73B1HTTCM243G meets all specified parameters and is classified as an active product, making it suitable for new designs and ongoing production applications.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM243G is the direct equivalent substitute for RK73B1HTTC243G. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73B series and share identical electrical, mechanical, and compliance specifications.

Selection Basis:

The primary distinction between the main part and substitute is product lifecycle status. The RK73B1HTTC243G carries "Not For New Designs" classification, indicating end-of-life or transition status. The RK73B1HTTCM243G maintains active product status, ensuring continued availability, manufacturing support, and compliance with current supply chain requirements.

Both parts satisfy automotive AEC-Q200 qualification requirements, making them suitable for automotive applications. Both maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and consumer electronics applications.

The substitute part is appropriate for:

• New design implementations requiring 24 kOhms ±2% 0.05W 0201 resistors
• Production transitions from legacy to active product lines
• Inventory replenishment where the main part is no longer available
• Applications requiring AEC-Q200 automotive-grade components

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM243G be used as a direct replacement for RK73B1HTTC243G in existing designs?

A: Yes. The substitute part is electrically and mechanically identical. All electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical specifications (package, dimensions, terminations) are equivalent. The substitute maintains identical AEC-Q200 automotive qualification and compliance certifications.

Q: What is the difference between RK73B1HTTC243G and RK73B1HTTCM243G?

A: The parts are functionally equivalent. The primary difference is product status: RK73B1HTTC243G is classified as "Not For New Designs," while RK73B1HTTCM243G is an active product. The "M" designation in the substitute part number indicates the active variant within the RK73B series.

Q: Are both parts suitable for automotive applications?

A: Yes. Both components carry AEC-Q200 automotive qualification, meeting automotive industry reliability and performance standards. Both are suitable for automotive circuit applications requiring 24 kOhms ±2% 0.05W resistors in 0201 package format.

Q: What is the package compatibility between these parts?

A: Both parts use identical 0201 (0603 Metric) package format with matching physical 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 and require no PCB layout modifications.

Q: Do both parts have the same moisture sensitivity level?

A: Yes. Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling requirements are identical for both parts.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory certifications. Compliance requirements and restrictions are equivalent.

Q: Why should I transition from RK73B1HTTC243G to RK73B1HTTCM243G?

A: The main part is classified as "Not For New Designs," indicating limited future availability and potential discontinuation. The substitute maintains active product status, ensuring reliable long-term supply, manufacturing continuity, and support for ongoing production requirements.