Equivalent & Substitute Parts for RK73H1HTTC3301D

Part Overview

The RK73H1HTTC3301D is a 3.3 kOhms ±0.5% chip resistor manufactured by KOA Speer Electronics, Inc., designed for automotive applications with AEC-Q200 qualification. This 0201 package (0603 Metric) thick film resistor delivers 0.05W power rating with moisture-resistant construction and operates across -55°C to 155°C temperature range.

The RK73H1HTTC3301D carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for existing applications and legacy system support.

Substiute Parts

RK73H1HTTC3301D

KOA Speer Electronics, Inc.In Stock: 1000RK73H1HTTC3301D Datasheet

Current PartRFQ

RK73H1HTTCM3301D

KOA Speer Electronics, Inc.In Stock: 1113RK73H1HTTCM3301D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC3301D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 3.3 kOhms
• 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

The substitute part RK73H1HTTCM3301D meets all mandatory parameters and represents the direct equivalent from the same manufacturer series (RK73H). The primary distinction is product status: the substitute part carries "Active" status, indicating current production and ongoing availability, whereas the original part is designated "Not For New Designs."

Parameter Comparison

Engineering Selection Recommendations

For New Designs: Select RK73H1HTTCM3301D. This part carries Active product status and represents the current production equivalent within the RK73H series. It maintains full electrical and mechanical compatibility with the original specification while ensuring long-term supply chain availability and manufacturer support.

For Legacy System Support: RK73H1HTTC3301D remains available with current inventory of 952 units. Both parts deliver identical electrical performance and thermal characteristics across the specified operating range. The substitute part RK73H1HTTCM3301D provides equivalent functionality with enhanced supply continuity.

Compliance Considerations: Both parts maintain ROHS3 compliance, AEC-Q200 automotive qualification, and MSL 1 moisture sensitivity rating. Selection between these parts does not introduce compliance or regulatory risk.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3301D directly replace RK73H1HTTC3301D in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 3.3 kOhms ±0.5% resistance, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, and -55°C to 155°C operating range. No circuit redesign or board layout modification is required.

Q: What is the significance of the "Not For New Designs" status on the original part?

A: This designation indicates the RK73H1HTTC3301D has been superseded in the manufacturer's active product line. The substitute RK73H1HTTCM3301D represents the current production equivalent. For new product development, RK73H1HTTCM3301D is the recommended selection to ensure ongoing availability and manufacturer support.

Q: Are there any differences in automotive qualification between these parts?

A: No. Both parts carry identical AEC-Q200 automotive qualification, temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 155°C). Automotive application requirements are fully satisfied by either part.

Q: What is the difference between "Moisture Resistant" and standard thick film construction?

A: The original part specification explicitly lists "Moisture Resistant" as a feature. The substitute part specification lists only "Thick Film" composition without explicit moisture resistance notation. Both parts maintain MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent moisture handling capability for storage and handling purposes.

Q: Can these parts be used interchangeably in high-reliability applications?

A: Yes. Both parts meet AEC-Q200 automotive qualification standards and maintain identical electrical specifications. The substitute part's Active status provides enhanced supply reliability for high-reliability applications requiring long-term component availability.

Q: What packaging format is available for these parts?

A: The original part is supplied in Tape & Reel (TR) format. The substitute part packaging information is not specified in available data. Confirm packaging requirements with the supplier before procurement.