RK73H1HTTC1804F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC1804F is a 1.8 MOhms ±1% thick film chip resistor in 0201 package (0603 Metric) rated for automotive applications under AEC-Q200 standard. This component features 0.05W power rating, moisture resistance, and operates across -55°C to 155°C temperature range. 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

RK73H1HTTC1804F

KOA Speer Electronics, Inc.In Stock: 890RK73H1HTTC1804F Datasheet

Current PartRFQ

RK73H1HTTCM1804F

KOA Speer Electronics, Inc.In Stock: 977RK73H1HTTCM1804F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC1804F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 1.8 MOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C

Mechanical Parameters:

• Package type: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height seated maximum: 0.010" (0.26mm)
• Number of terminations: 2

Compliance & Certification:

• Automotive AEC-Q200 rating
• ROHS3 compliance
• Moisture Sensitivity Level 1

Substitute parts must match all specified parameters without deviation. The primary distinction between the main part and substitute alternatives is product status and availability, not functional or physical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM1804F serves as the direct equivalent substitute for RK73H1HTTC1804F. Both components are manufactured by KOA Speer Electronics, Inc., and maintain identical electrical specifications, mechanical dimensions, and automotive compliance certifications.

Selection Basis:

The substitute part RK73H1HTTCM1804F is classified as Active product status, whereas the main part RK73H1HTTC1804F is designated Not For New Designs. This distinction reflects manufacturing lifecycle management rather than technical capability differences. Both parts satisfy identical AEC-Q200 automotive requirements, ROHS3 compliance, and MSL 1 moisture sensitivity ratings.

For applications requiring the 1.8 MOhms ±1% 0.05W 0201 package resistor with automotive qualification, the RK73H1HTTCM1804F represents the current production equivalent. Electrical performance, thermal characteristics, and physical compatibility are fully maintained across both part numbers.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1804F be used as a direct replacement for RK73H1HTTC1804F?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value (1.8 MOhms), tolerance (±1%), power rating (0.05W), package type (0201), temperature coefficient (±200ppm/°C), operating range (-55°C to 155°C), and AEC-Q200 automotive certification. The substitute part is the current active production equivalent.

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

A: This designation indicates the RK73H1HTTC1804F has reached end-of-life in the manufacturer's product lifecycle. New designs should utilize RK73H1HTTCM1804F, which carries Active status and ensures long-term availability and supply chain continuity.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both components measure 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both RK73H1HTTC1804F and RK73H1HTTCM1804F are AEC-Q200 rated, ROHS3 compliant, and carry MSL 1 (Unlimited) moisture sensitivity classification, meeting automotive industry standards.

Q: Is there a difference in packaging between the two parts?

A: The main part specifies Tape & Reel (TR) packaging. The substitute part packaging information is not specified in available data. Confirm packaging requirements with supplier documentation before procurement.

Q: What is the temperature coefficient difference impact?

A: Both parts share identical temperature coefficient of ±200ppm/°C. Resistance drift across the -55°C to 155°C operating range is equivalent for both components.