RK73H1HTTC41R2D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC41R2D is a 41.2 Ohm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated for 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC41R2D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and designs requiring this specific resistance value and electrical performance.

Substiute Parts

RK73H1HTTC41R2D

KOA Speer Electronics, Inc.In Stock: 1048RK73H1HTTC41R2D Datasheet

Current PartRFQ

RK73H1HTTCM41R2D

KOA Speer Electronics, Inc.In Stock: 735RK73H1HTTCM41R2D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC41R2D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 41.2 Ohms
• Tolerance: ±0.5%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: MSL 1

Substitute parts must maintain identical electrical performance and environmental ratings. Physical dimensions, termination count, and regulatory compliance (REACH, ECCN, HTSUS) must also align with the original specification.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM41R2D is a direct functional equivalent to the RK73H1HTTC41R2D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series, and maintain identical electrical specifications, package dimensions, and automotive compliance ratings.

The primary distinction is product lifecycle status: the RK73H1HTTC41R2D is designated "Not For New Designs," while the RK73H1HTTCM41R2D carries "Active" status. This indicates the RK73H1HTTCM41R2D represents the current production equivalent and is the appropriate selection for new applications requiring this resistance value and performance profile.

Both parts satisfy AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity requirements. Regulatory classifications (REACH, ECCN, HTSUS) are identical, confirming full interchangeability from a compliance perspective.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM41R2D be used as a direct replacement for the RK73H1HTTC41R2D?

A: Yes. Both components share identical electrical specifications (41.2 Ohms ±0.5%, 0.05W), package dimensions (0201/0603 Metric), temperature performance (±200ppm/°C, -55°C ~ 155°C), and automotive certifications (AEC-Q200). Physical and functional interchangeability is complete.

Q: Why is the RK73H1HTTC41R2D marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product line. The RK73H1HTTCM41R2D is the active equivalent. For new designs, the active part number should be specified.

Q: Are there any differences in moisture resistance between these parts?

A: The RK73H1HTTC41R2D explicitly lists "Moisture Resistant" in its features, while the RK73H1HTTCM41R2D does not include this notation. However, both parts carry MSL 1 (Unlimited) rating, indicating equivalent moisture sensitivity performance.

Q: Do both parts meet automotive standards?

A: Yes. Both the RK73H1HTTC41R2D and RK73H1HTTCM41R2D are AEC-Q200 qualified and suitable for automotive applications.

Q: What is the significance of the "M" in the RK73H1HTTCM41R2D part number?

A: The "M" designation differentiates the active production variant from the superseded RK73H1HTTC41R2D. Both maintain identical electrical and mechanical specifications.

Q: Are these parts RoHS compliant?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.