Equivalent & Substitute Parts for RK73H1HTTC1802F

Part Overview

The RK73H1HTTC1802F is an 18 kOhms ±1% 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 The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identification of equivalent and substitute parts is necessary to support existing designs, legacy system maintenance, and procurement continuity.

Substiute Parts

RK73H1HTTC1802F

KOA Speer Electronics, Inc.In Stock: 24394RK73H1HTTC1802F Datasheet

Current PartRFQ

RK73H1HTTCM1802F

KOA Speer Electronics, Inc.In Stock: 926RK73H1HTTCM1802F Datasheet

MFR RecommendedRFQ

AC0201FR-0718KL

YAGEOIn Stock: 896AC0201FR-0718KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC1802F are qualified based on strict electrical and mechanical parameter matching:

Qualifying Parameters for Substitution:

• Resistance value: 18 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Two substitute parts meet all qualifying parameters and are therefore electrically and mechanically interchangeable with the RK73H1HTTC1802F.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM1802F (KOA Speer Electronics, Inc.)

This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains all electrical and mechanical specifications identical to the RK73H1HTTC1802F and carries Active product status. The primary distinction is the absence of explicit moisture-resistant designation in the provided specifications, though both parts maintain MSL 1 rating and ROHS3 compliance. This substitute is appropriate for applications where the original part is unavailable and moisture resistance is not a critical design requirement beyond standard MSL 1 handling.

AC0201FR-0718KL (YAGEO)

This part is a direct cross-manufacturer substitute from YAGEO. It matches all electrical parameters, maintains AEC-Q200 automotive qualification, includes moisture-resistant construction, and carries Active product status. The AC0201FR-0718KL provides full functional equivalence with the RK73H1HTTC1802F and is suitable for direct replacement in automotive applications requiring sustained moisture resistance.

Both substitutes are ROHS3 compliant and maintain the full operating temperature range of -55°C ~ 155°C required for automotive environments.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1802F be used as a direct replacement for RK73H1HTTC1802F?

A: Yes. Both parts share identical electrical specifications (18 kOhms ±1%, 0.05W, ±200ppm/°C), identical mechanical package (0201 / 0603 Metric), identical operating temperature range (-55°C ~ 155°C), and identical automotive qualification (AEC-Q200). The RK73H1HTTCM1802F is the active product status equivalent from the same manufacturer.

Q: Can AC0201FR-0718KL be used as a direct replacement for RK73H1HTTC1802F?

A: Yes. The AC0201FR-0718KL meets all electrical and mechanical requirements: 18 kOhms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, and AEC-Q200 automotive qualification. It is manufactured by YAGEO and carries Active product status.

Q: What is the significance of the "Not For New Designs" status on RK73H1HTTC1802F?

A: This designation indicates the part has been superseded by the manufacturer and is no longer recommended for new circuit designs. Existing designs using this part may continue operation, but new designs should incorporate one of the active substitute parts listed.

Q: Are all three parts interchangeable in automotive applications?

A: Yes, all three parts are AEC-Q200 qualified and suitable for automotive use. They share identical resistance, tolerance, power rating, package, temperature coefficient, and operating temperature specifications. Selection between them should be based on availability and moisture resistance requirements specific to the application environment.

Q: What does MSL 1 (Unlimited) mean for these parts?

A: MSL 1 indicates the lowest moisture sensitivity level. These parts can be stored indefinitely without special moisture control measures and do not require baking before soldering, simplifying handling and storage procedures.

Q: Are there any packaging differences between these substitutes?

A: The RK73H1HTTC1802F and AC0201FR-0718KL are specified as Tape & Reel (TR) packaging. The RK73H1HTTCM1802F packaging specification is not provided in the available data. Confirm packaging requirements with the supplier if specific reel formats are required for automated assembly.