Equivalent & Substitute Parts for RK73H1HTTC34R8D

Part Overview

The RK73H1HTTC34R8D is a 34.8 Ohm ±0.5% thick film chip resistor in 0201 package (0603 metric) rated for 0.05W power dissipation. This component is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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

RK73H1HTTC34R8D

KOA Speer Electronics, Inc.In Stock: 908RK73H1HTTC34R8D Datasheet

Current PartRFQ

RK73H1HTTCM34R8D

KOA Speer Electronics, Inc.In Stock: 810RK73H1HTTCM34R8D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC34R8D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 34.8 Ohms (exact match required)
• Tolerance: ±0.5% (precision class must be maintained)
• Power rating: 0.05W minimum (equal or higher acceptable)
• Package: 0201 (0603 Metric) form factor
• Composition: Thick film construction
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C minimum
• Automotive qualification: AEC-Q200 required
• Moisture sensitivity: MSL 1 or better
• RoHS compliance: ROHS3 Compliant

Substitute parts must satisfy all mandatory parameters to ensure functional and environmental equivalence. Deviations in any parameter render a part unsuitable for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM34R8D is the direct equivalent substitute for RK73H1HTTC34R8D. Both parts are manufactured by KOA Speer Electronics within the RK73H series and share identical electrical, thermal, and mechanical specifications.

The primary distinction is product lifecycle status: RK73H1HTTC34R8D is designated "Not For New Designs," while RK73H1HTTCM34R8D carries "Active" status. This indicates RK73H1HTTCM34R8D is the current production part recommended for ongoing supply and new applications.

Both parts satisfy automotive AEC-Q200 qualification, ROHS3 compliance, and REACH requirements. The substitute maintains identical tolerance (±0.5%), temperature coefficient (±200ppm/°C), and operating range (-55°C to 155°C). Physical dimensions and termination configuration are unchanged, ensuring direct PCB compatibility without layout modification.

Selection between these parts should prioritize RK73H1HTTCM34R8D for new procurement due to its active product status and assured long-term availability. The RK73H1HTTC34R8D may be retained for existing inventory management or legacy system support where supply is confirmed.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM34R8D be used as a direct replacement for RK73H1HTTC34R8D?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value (34.8 Ohms), tolerance (±0.5%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), and operating range (-55°C to 155°C). No circuit redesign or PCB modification is required.

Q: What is the significance of "Not For New Designs" status on RK73H1HTTC34R8D?

A: This designation indicates the part has been superseded in the manufacturer's product line. While existing inventory remains available and functional, KOA Speer recommends using RK73H1HTTCM34R8D for new applications to ensure long-term supply continuity and access to current manufacturing processes.

Q: Are both parts suitable for automotive applications?

A: Yes. Both RK73H1HTTC34R8D and RK73H1HTTCM34R8D carry AEC-Q200 automotive qualification, confirming reliability and performance standards for automotive-grade use across the specified temperature range.

Q: Do these parts have different moisture sensitivity requirements?

A: No. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage practices apply without special desiccant or humidity control requirements.

Q: Is the 0201 package compatible with standard PCB assembly equipment?

A: The 0201 package (0603 metric) is a standard surface-mount form factor. Dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm) are compatible with modern automated assembly equipment and standard reflow processes.

Q: What is the difference in packaging between the two parts?

A: RK73H1HTTC34R8D is supplied in Tape & Reel (TR) format. RK73H1HTTCM34R8D packaging information is not specified in the provided data. Confirm packaging requirements with the supplier for procurement planning.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both parts are ROHS3 Compliant and REACH Unaffected, satisfying environmental and regulatory requirements for European and global markets.