Equivalent & Substitute Parts for RK73H1HTTC63R4F

Part Overview

The RK73H1HTTC63R4F is a 63.4 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0603 metric). This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction. The part is currently active in production with 976 units in stock. Substitute parts are identified to provide design flexibility, supply chain alternatives, and equivalent performance across qualified manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

RK73H1HTTC63R4F

KOA Speer Electronics, Inc.In Stock: 1018RK73H1HTTC63R4F Datasheet

Current PartRFQ

RK73H1HTTCM63R4F

KOA Speer Electronics, Inc.In Stock: 1107RK73H1HTTCM63R4F Datasheet

MFR RecommendedRFQ

AC0201FR-0763R4L

YAGEOIn Stock: 911AC0201FR-0763R4L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC63R4F are qualified based on the following criteria:

Electrical Parameters (Non-Negotiable):

• Resistance value: 63.4 Ohms
• Tolerance: ±1%
• Power rating: 0.05W minimum
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Non-Negotiable):

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

Compliance & Quality Parameters:

• Automotive rating: AEC-Q200
• RoHS status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• Composition: Thick Film

Substitutes are grouped into two categories: manufacturer-recommended alternatives from KOA Speer Electronics and direct cross-references from qualified alternative manufacturers. All substitutes maintain identical electrical specifications and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RK73H1HTTC63R4F): The original KOA Speer Electronics RK73H1HTTC63R4F is the specified component with full moisture-resistant construction and AEC-Q200 automotive qualification. This part is active in production with adequate inventory (976 units) and meets all regulatory requirements including ROHS3 compliance and unlimited MSL rating.

Manufacturer-Recommended Alternative (RK73H1HTTCM63R4F): The RK73H1HTTCM63R4F from KOA Speer Electronics is an alternative within the same manufacturer's RK73H series. This part maintains identical electrical specifications, package dimensions, and automotive qualification. However, moisture resistance is not explicitly specified for this variant. This substitute is suitable for applications where moisture resistance is not a critical requirement. Inventory availability is higher (1092 units).

Cross-Manufacturer Alternative (AC0201FR-0763R4L): The YAGEO AC0201FR-0763R4L provides direct electrical and mechanical equivalence with full moisture-resistant construction and AEC-Q200 qualification. This part is manufactured by a qualified alternative supplier and maintains all critical parameters including temperature coefficient, operating range, and package specifications. Inventory is available (822 units). This substitute is suitable for supply chain diversification and equivalent performance applications.

All three parts are active products with ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring compatibility with modern manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM63R4F be used as a direct replacement for RK73H1HTTC63R4F?

A: The RK73H1HTTCM63R4F is electrically and mechanically equivalent with identical resistance, tolerance, power rating, temperature coefficient, and operating range. However, moisture resistance is not specified for the M variant. If moisture resistance is required for your application, use the original RK73H1HTTC63R4F or the YAGEO AC0201FR-0763R4L.

Q: Is the YAGEO AC0201FR-0763R4L suitable for automotive applications?

A: Yes. The AC0201FR-0763R4L carries AEC-Q200 automotive qualification, moisture-resistant construction, and ROHS3 compliance. It meets all electrical and mechanical specifications of the original part and is suitable for automotive-grade applications.

Q: Do all three parts have the same package footprint?

A: Yes. All three parts use the 0201 package (0603 metric) with identical dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). They are PCB-compatible without layout modifications.

Q: What is the difference between the RK73H1HTTC63R4F and RK73H1HTTCM63R4F?

A: Both parts are from KOA Speer Electronics' RK73H series with identical electrical specifications and AEC-Q200 qualification. The primary difference is that moisture resistance is explicitly specified for the RK73H1HTTC63R4F but not documented for the M variant. Both have unlimited MSL ratings.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three parts (RK73H1HTTC63R4F, RK73H1HTTCM63R4F, and AC0201FR-0763R4L) are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for hazardous substance restrictions.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. All three parts have identical operating temperature ranges of -55°C ~ 155°C and temperature coefficients of ±200ppm/°C. They are interchangeable for applications within this temperature specification.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that these components have no moisture sensitivity limitations. They can be stored indefinitely without special humidity controls and do not require baking before soldering, simplifying inventory management and manufacturing processes.