RK73B1HTTC475J Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC475J is a 4.7 MOhm thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for automotive applications with AEC-Q200 qualification. This 0201 package resistor delivers 0.05W power rating with ±5% tolerance and operates across the temperature range of -55°C to 155°C. The part is currently classified as "Not For New Designs," necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

RK73B1HTTC475J

KOA Speer Electronics, Inc.In Stock: 983RK73B1HTTC475J Datasheet

Current PartRFQ

RK73B1HTTCM475J

KOA Speer Electronics, Inc.In Stock: 777RK73B1HTTCM475J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC475J is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain identical for direct substitution:

• Resistance value: 4.7 MOhms
• Tolerance: ±5%
• Power rating: 0.05W
• Package designation: 0201 (0603 Metric)
• Composition type: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance status: ROHS3 Compliant
• Moisture sensitivity level: MSL 1

The primary distinction between the main part and its substitute is product status. The RK73B1HTTC475J carries "Not For New Designs" status, while the substitute maintains "Active" status, making it the appropriate selection for current production requirements.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM475J is the direct equivalent substitute for the RK73B1HTTC475J. Both parts are manufactured by KOA Speer Electronics, Inc., within the RK73B series and maintain identical electrical specifications, mechanical dimensions, and automotive qualifications. The substitute part carries Active product status, making it the appropriate selection for new production builds and ongoing component procurement.

Both parts satisfy ROHS3 compliance requirements and REACH unaffected status, ensuring regulatory alignment for automotive applications. The AEC-Q200 automotive qualification is maintained across both parts, confirming suitability for automotive-grade circuit implementations. MSL 1 rating indicates unlimited shelf life under standard storage conditions, eliminating moisture-related handling constraints.

Selection of the RK73B1HTTCM475J over the obsolescent RK73B1HTTC475J ensures supply chain continuity and manufacturer support for current and future production requirements.

Frequently Asked Questions (FAQ)

Q: Can the RK73B1HTTCM475J be used as a direct replacement for the RK73B1HTTC475J in existing designs?

A: Yes. Both parts are electrically and mechanically identical. All critical parameters including resistance value, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature range are equivalent. The substitute carries Active product status, making it the preferred selection for ongoing applications.

Q: What is the significance of the "Not For New Designs" status on the RK73B1HTTC475J?

A: This designation indicates the part is in end-of-life phase and should not be selected for new product development. The RK73B1HTTCM475J, with Active status, is the recommended alternative for all new designs and production requirements.

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

A: Both parts use identical 0201 (0603 Metric) package specifications with matching physical dimensions of 0.024" L x 0.012" W and maximum seated height of 0.010". They are mechanically interchangeable on PCB layouts.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the RK73B1HTTC475J and RK73B1HTTCM475J carry AEC-Q200 automotive qualification, confirming suitability for automotive-grade applications across the -55°C to 155°C operating temperature range.

Q: What is the moisture sensitivity level for these resistors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity constraints. Standard storage conditions apply without special desiccant or controlled humidity requirements.

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

A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status, ensuring equivalent regulatory alignment for automotive and industrial applications.