Equivalent & Substitute Parts for RK73B1HTTC155G

Part Overview

The RK73B1HTTC155G is a 1.5 MOhms ±2% thick film chip resistor in 0201 package (0603 metric) rated for automotive applications under AEC-Q200 standard. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for existing applications or legacy system maintenance.

Substiute Parts

RK73B1HTTC155G

KOA Speer Electronics, Inc.In Stock: 856RK73B1HTTC155G Datasheet

Current PartRFQ

RK73B1HTTCM155G

KOA Speer Electronics, Inc.In Stock: 983RK73B1HTTCM155G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC155G is determined by strict equivalence across the following critical parameters:

• Resistance Value: 1.5 MOhms (exact match required)
• Tolerance: ±2% (exact match required)
• Power Rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±200ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Automotive Compliance: AEC-Q200 (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The substitute part RK73B1HTTCM155G meets all these criteria and represents the active production equivalent from the same manufacturer series (RK73B).

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM155G is the direct equivalent substitute for RK73B1HTTC155G. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73B series and share identical electrical, mechanical, and environmental specifications.

Primary Advantage of Substitution: The RK73B1HTTCM155G carries "Active" product status, ensuring continued availability and supply chain support, whereas the original part is designated "Not For New Designs." This substitution is appropriate for both legacy system maintenance and new production runs requiring this specific resistance value and package configuration.

Compliance Verification: Both parts maintain ROHS3 compliance, AEC-Q200 automotive qualification, and MSL 1 moisture sensitivity rating. No additional qualification or testing is required for direct substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM155G be used as a direct replacement for RK73B1HTTC155G in automotive applications?

A: Yes. Both parts are AEC-Q200 qualified, share identical electrical parameters (1.5 MOhms ±2%, 0.05W), and are housed in the same 0201 package. Direct substitution is supported without design modification.

Q: What is the difference between RK73B1HTTC155G and RK73B1HTTCM155G?

A: The parts are electrically and mechanically identical. The primary difference is product status: RK73B1HTTC155G is "Not For New Designs," while RK73B1HTTCM155G is "Active." The suffix variation in the part number reflects manufacturing or packaging updates within the same product line.

Q: Are there any PCB layout or footprint considerations when substituting these parts?

A: No. Both components use the 0201 (0603 metric) package with identical dimensions (0.024" L x 0.012" W, 0.60mm x 0.30mm) and height (0.010" / 0.26mm). PCB footprints and assembly processes remain unchanged.

Q: Is RoHS compliance maintained with the substitute part?

A: Yes. RK73B1HTTCM155G is ROHS3 compliant, matching the compliance status of the original part.

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are both parts suitable for the full automotive temperature range?

A: Yes. Both components operate across -55°C to 155°C with a temperature coefficient of ±200ppm/°C, meeting automotive environmental requirements.