RK73H1HTTC4872D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4872D is a 48.7 kOhms ±0.5% chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant thick film construction.

The RK73H1HTTC4872D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line.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

RK73H1HTTC4872D

KOA Speer Electronics, Inc.In Stock: 802RK73H1HTTC4872D Datasheet

Current PartRFQ

RK73H1HTTCM4872D

KOA Speer Electronics, Inc.In Stock: 804RK73H1HTTCM4872D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC4872D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 48.7 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 & Package Parameters:

• Package type: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)
• Physical dimensions: 0.024" L x 0.012" W / 0.60mm x 0.30mm (exact match required)
• Height - Seated (Max): 0.010" / 0.26mm (exact match required)

Compliance & Certification Parameters:

• Automotive rating: AEC-Q200 (exact match required)
• Moisture resistance: Yes (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• MSL: 1 (Unlimited) (exact match required)

Substitute parts must satisfy all parameters listed above. The primary distinction between the main part and its substitute is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM4872D is the direct substitute for the RK73H1HTTC4872D. Both components are manufactured by KOA Speer Electronics, Inc., and share identical electrical, mechanical, and compliance specifications. The substitute part carries an "Active" product status, indicating ongoing manufacturer support and availability.

The RK73H1HTTC4872D is designated "Not For New Designs," which signals that the manufacturer has transitioned this part number out of active production. For new circuit designs and long-term supply chain planning, the RK73H1HTTCM4872D should be selected as the primary component choice.

Both parts maintain full compliance with AEC-Q200 automotive qualification, ROHS3 directives, and MSL 1 moisture sensitivity ratings. The electrical performance, thermal characteristics, and mechanical compatibility are identical across all specified parameters. Selection between these parts should be based on product lifecycle status and supply availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM4872D be used as a direct replacement for the RK73H1HTTC4872D in existing designs?

A: Yes. The RK73H1HTTCM4872D is electrically and mechanically identical to the RK73H1HTTC4872D. All electrical parameters (resistance, tolerance, power rating, temperature coefficient), mechanical dimensions, package type, and compliance certifications are equivalent. Direct substitution is supported without circuit modification.

Q: What is the significance of the "Not For New Designs" status on the RK73H1HTTC4872D?

A: This designation indicates that the manufacturer has discontinued active production and support for this part number. While existing inventory may remain available, the RK73H1HTTCM4872D is the recommended choice for new circuit designs to ensure long-term supply chain continuity and manufacturer support.

Q: Are there any differences in packaging format between these two parts?

A: The main part (RK73H1HTTC4872D) is specified with Tape & Reel (TR) packaging. The substitute part (RK73H1HTTCM4872D) does not specify a packaging format in the provided data. Both parts use the identical 0201 (0603 Metric) package type. Packaging format should be confirmed with the supplier based on specific procurement requirements.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the RK73H1HTTC4872D and RK73H1HTTCM4872D carry AEC-Q200 qualification, confirming suitability for automotive applications. Both parts are moisture-resistant thick film resistors with MSL 1 (Unlimited) ratings and ROHS3 compliance.

Q: What is the operating temperature range for these resistors?

A: Both parts operate across the temperature range of -55°C to 155°C with a temperature coefficient of ±200ppm/°C. This specification ensures stable performance across automotive environmental conditions.

Q: Are these parts suitable for high-reliability applications?

A: Both parts meet AEC-Q200 automotive qualification standards and carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating suitability for high-reliability automotive applications. The thick film composition and moisture-resistant construction support extended operational life in demanding environments.