RK73H1HTTC3480D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC3480D is a 348 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The RK73H1HTTC3480D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line.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 to ensure design continuity, maintain supply chain reliability, and transition to actively supported alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC3480D

KOA Speer Electronics, Inc.In Stock: 1099RK73H1HTTC3480D Datasheet

Current PartRFQ

RK73H1HTTCM3480D

KOA Speer Electronics, Inc.In Stock: 1166RK73H1HTTCM3480D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC3480D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 348 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)
• 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 1 (required for reliability)

Substitute parts must match all electrical and mechanical parameters without exception. Differences in product status (Active vs. Not For New Designs) do not affect functional equivalence but indicate manufacturing lifecycle position.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM3480D is a direct functional equivalent to the RK73H1HTTC3480D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series, and share identical electrical specifications, mechanical dimensions, and automotive compliance certifications.

The primary distinction is product lifecycle status: the RK73H1HTTC3480D is designated "Not For New Designs," while the RK73H1HTTCM3480D carries "Active" status. This indicates that the RK73H1HTTCM3480D represents the current production standard and is the recommended selection for new circuit designs and long-term supply chain continuity.

Both parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with automotive and industrial applications requiring high reliability and regulatory conformance.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM3480D be used as a direct replacement for the RK73H1HTTC3480D?

A: Yes. The RK73H1HTTCM3480D is electrically and mechanically equivalent to the RK73H1HTTC3480D. All critical parameters—resistance, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and automotive certifications—are identical. Direct substitution is permissible without circuit redesign.

Q: What does "Not For New Designs" mean for the RK73H1HTTC3480D?

A: "Not For New Designs" indicates that the manufacturer has transitioned this part number to end-of-life status and no longer recommends it for new product development. The RK73H1HTTCM3480D is the active replacement. Existing designs using the RK73H1HTTC3480D may continue operation, but new designs should specify the RK73H1HTTCM3480D to ensure long-term availability and manufacturer support.

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

A: No. Both the RK73H1HTTC3480D and RK73H1HTTCM3480D feature moisture-resistant thick film construction and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity limitations during storage or handling.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both components are AEC-Q200 qualified, meeting automotive industry reliability and performance standards. Both are ROHS3 compliant and suitable for automotive and industrial applications.

Q: What is the physical package size for these resistors?

A: Both parts use the 0201 (0603 Metric) package with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and a maximum seated height of 0.010" (0.26mm). They are compatible with standard surface-mount assembly processes and PCB layouts designed for 0201 components.

Q: Is the RK73H1HTTCM3480D available in the same packaging format?

A: The RK73H1HTTC3480D is specified as Tape & Reel (TR) packaging. The RK73H1HTTCM3480D packaging information is not explicitly provided in the available data. Confirm packaging format with the supplier or manufacturer datasheet before procurement to ensure compatibility with your assembly process.