Equivalent & Substitute Parts for RK73B1HTTC2R2J

Part Overview

The RK73B1HTTC2R2J is a 2.2 Ohm, ±5% tolerance, 0.05W thick film chip resistor in 0201 package (0.60mm x 0.30mm) manufactured by KOA Speer Electronics, Inc. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently classified as Not For New Designs, necessitating identification of equivalent and substitute components for ongoing production and maintenance applications.

Substiute Parts

RK73B1HTTC2R2J

KOA Speer Electronics, Inc.In Stock: 16636RK73B1HTTC2R2J Datasheet

Current PartRFQ

RK73B1HTTCM2R2J

KOA Speer Electronics, Inc.In Stock: 1143RK73B1HTTCM2R2J Datasheet

MFR RecommendedRFQ

RMCF0201FT2R00

Stackpole Electronics IncIn Stock: 953RMCF0201FT2R00 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC2R2J is determined by the following critical parameters:

Primary Substitution Criteria:

• Package / Case: 0201 (0603 Metric) - physical form factor must match
• Power Rating: 0.05W (1/20W) - electrical power handling capability
• Operating Temperature Range: -55°C to 155°C - thermal operating envelope
• Composition: Thick Film - construction technology
• Automotive Rating: AEC-Q200 - quality and reliability standard

Secondary Compatibility Parameters:

• Temperature Coefficient: ±400ppm/°C - thermal stability characteristic
• RoHS Status: ROHS3 Compliant - environmental compliance requirement
• Moisture Sensitivity Level: 1 (Unlimited) - storage and handling requirements

Resistance value and tolerance may vary within acceptable circuit design margins, provided the substitute part maintains the same package, power rating, temperature range, and automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

RK73B1HTTCM2R2J (MFR Recommended Substitute):

This part is the manufacturer-recommended equivalent from KOA Speer Electronics, Inc. It maintains identical electrical specifications (2.2 Ohms, ±5% tolerance, 0.05W power rating) and physical dimensions as the original RK73B1HTTC2R2J. The primary distinction is product status: RK73B1HTTCM2R2J is classified as Active, whereas the original part is Not For New Designs. This substitute is suitable for direct replacement in existing designs and new production applications requiring the same performance characteristics and automotive qualification.

RMCF0201FT2R00 (Upgrade Substitute):

This Stackpole Electronics Inc component provides an upgrade path with improved tolerance specification (±1% versus ±5%). The resistance value differs at 2 Ohms compared to 2.2 Ohms in the original part. All other critical parameters remain aligned: 0.05W power rating, 0201 package, thick film composition, ±400ppm/°C temperature coefficient, -55°C to 155°C operating range, and AEC-Q200 automotive rating. The maximum seated height is 0.011" (0.28mm) versus 0.010" (0.26mm) for the original. This substitute is applicable where the 2 Ohm resistance value and tighter tolerance are compatible with circuit requirements and where the marginal height difference does not create mechanical constraints.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM2R2J be used as a direct replacement for RK73B1HTTC2R2J?

A: Yes. RK73B1HTTCM2R2J is the manufacturer-recommended equivalent with identical electrical and mechanical specifications. The only difference is product status; RK73B1HTTCM2R2J is Active while the original is Not For New Designs.

Q: What is the resistance difference between the original part and RMCF0201FT2R00?

A: The original RK73B1HTTC2R2J is 2.2 Ohms, while RMCF0201FT2R00 is 2 Ohms. This 0.2 Ohm difference must be evaluated against circuit design requirements and tolerance budgets.

Q: Does the height difference between RK73B1HTTC2R2J and RMCF0201FT2R00 affect PCB assembly?

A: The height difference is 0.001" (0.02mm) maximum (0.010" versus 0.011" seated height). This marginal difference typically does not impact standard PCB assembly processes but should be verified for applications with tight height constraints.

Q: Are all substitute parts AEC-Q200 rated?

A: Yes. Both RK73B1HTTCM2R2J and RMCF0201FT2R00 carry AEC-Q200 automotive qualification, maintaining the same reliability standard as the original part.

Q: What tolerance should be specified when selecting between ±5% and ±1% options?

A: Circuit design requirements determine tolerance selection. The original part and RK73B1HTTCM2R2J both offer ±5% tolerance. RMCF0201FT2R00 provides ±1% tolerance for applications requiring tighter resistance accuracy. Verify that the selected tolerance meets circuit performance and stability requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RK73B1HTTC2R2J, RK73B1HTTCM2R2J, and RMCF0201FT2R00 are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).