RK73H1HTTC3902D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC3902D is a 39 kOhms ±0.5% 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 thick film construction.

The RK73H1HTTC3902D carries a "Not For New Designs" product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production of systems utilizing this resistor specification.

Substiute Parts

RK73H1HTTC3902D

KOA Speer Electronics, Inc.In Stock: 1168RK73H1HTTC3902D Datasheet

Current PartRFQ

RK73H1HTTCM3902D

KOA Speer Electronics, Inc.In Stock: 944RK73H1HTTCM3902D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC3902D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 39 kOhms (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)
• Composition: Thick Film (exact match required)

Compliance & Certification:

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

Substitute parts must satisfy all parameters listed above. The RK73H1HTTCM3902D meets these criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM3902D is the manufacturer-recommended substitute for the RK73H1HTTC3902D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series and share identical electrical and mechanical specifications.

The primary distinction is product status: the main part (RK73H1HTTC3902D) is designated "Not For New Designs," while the substitute (RK73H1HTTCM3902D) maintains "Active" status. This status difference reflects manufacturing lifecycle management and does not indicate functional or performance differences between the two parts.

Both parts satisfy automotive AEC-Q200 qualification requirements, ROHS3 compliance, and MSL 1 moisture sensitivity classification. Selection between these parts should be based on availability and supply chain requirements, as they are electrically and mechanically interchangeable within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM3902D be used as a direct replacement for the RK73H1HTTC3902D?

A: Yes. The RK73H1HTTCM3902D is electrically and mechanically equivalent to the RK73H1HTTC3902D. Both components share identical resistance (39 kOhms), tolerance (±0.5%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 155°C). Both meet AEC-Q200 automotive qualification and ROHS3 compliance requirements.

Q: Why does the main part have "Not For New Designs" status?

A: "Not For New Designs" status indicates that the manufacturer has transitioned this part number out of active production. This is a standard lifecycle designation and does not reflect component quality or performance. The substitute part (RK73H1HTTCM3902D) maintains active status and is the recommended choice for ongoing production.

Q: Are there any differences in package dimensions between these parts?

A: No. Both the RK73H1HTTC3902D and RK73H1HTTCM3902D use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm).

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both components are qualified to AEC-Q200 automotive standards and are suitable for automotive applications requiring this certification level.

Q: What is the significance of MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. Both parts can be stored and handled without special moisture control measures, simplifying supply chain management and component storage requirements.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under the same ECCN (EAR99) and HTSUS (8533.21.0030) codes.