RK73H1HTTC2940D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC2940D is a 294 Ohm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC2940D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identifying equivalent substitute parts is necessary for ongoing support of existing designs, legacy system maintenance, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

RK73H1HTTC2940D

KOA Speer Electronics, Inc.In Stock: 937RK73H1HTTC2940D Datasheet

Current PartRFQ

RK73H1HTTCM2940D

KOA Speer Electronics, Inc.In Stock: 723RK73H1HTTCM2940D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC2940D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 294 Ohms (exact match required)
• Tolerance: ±0.5% (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 / Case: 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)

Compliance & Quality Parameters:

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

Substitute parts must match all electrical, mechanical, and compliance parameters without exception. Manufacturer differences are acceptable provided all specified parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM2940D is a direct electrical and mechanical equivalent to the RK73H1HTTC2940D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series and share identical specifications across all critical parameters.

Key Selection Factors:

Product Status Advantage: The RK73H1HTTCM2940D carries an "Active" product status, whereas the RK73H1HTTC2940D is designated "Not For New Designs." This distinction indicates that the substitute part represents the current production offering from the manufacturer and is recommended for ongoing procurement.

Compliance Continuity: Both parts maintain identical AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity rating. No compliance or regulatory differences exist between the two parts.

Electrical Performance: Identical resistance value (294 Ohms), tolerance (±0.5%), power rating (0.05W), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 155°C) ensure functional equivalence in all circuit applications.

Mechanical Compatibility: Identical 0201 (0603 Metric) package dimensions and physical characteristics ensure direct PCB footprint compatibility without layout modifications.

The RK73H1HTTCM2940D is suitable for direct substitution in all applications currently using the RK73H1HTTC2940D.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM2940D be used as a direct replacement for the RK73H1HTTC2940D?

A: Yes. The RK73H1HTTCM2940D is a direct equivalent. All electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical parameters (0201 package, physical dimensions, height) are identical. Both parts meet AEC-Q200 automotive qualification and ROHS3 compliance requirements.

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

A: The primary difference is product status. The RK73H1HTTC2940D is marked "Not For New Designs," indicating it has been superseded. The RK73H1HTTCM2940D is the current active equivalent from KOA Speer Electronics, Inc. All technical specifications are identical.

Q: Are there any packaging differences between these parts?

A: No. Both parts use the 0201 (0603 Metric) package with identical physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). PCB footprints are identical.

Q: Do both parts meet automotive standards?

A: Yes. Both the RK73H1HTTC2940D and RK73H1HTTCM2940D are AEC-Q200 qualified and suitable for automotive applications. Both maintain ROHS3 compliance and MSL 1 moisture sensitivity rating.

Q: Can I mix these parts in the same production batch?

A: Yes. Since all electrical and mechanical specifications are identical, both parts are functionally interchangeable. However, the RK73H1HTTCM2940D is recommended for new procurement due to its active product status.

Q: What is the temperature coefficient specification, and does it differ between these parts?

A: Both parts have an identical temperature coefficient of ±200ppm/°C and operate across the same temperature range of -55°C ~ 155°C. No performance difference exists in temperature-dependent applications.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Regulatory and compliance status is identical.