RK73B1HTTC222G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC222G is a 2.2 kOhms ±2% thick film chip resistor in 0201 package format, rated for 0.05W (1/20W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and complies with automotive AEC-Q200 standards. The part is currently classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73B1HTTC222G

KOA Speer Electronics, Inc.In Stock: 1204RK73B1HTTC222G Datasheet

Current PartRFQ

RK73B1HTTCM222G

KOA Speer Electronics, Inc.In Stock: 985RK73B1HTTCM222G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC222G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 2.2 kOhms (exact match required)
• Tolerance: ±2% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package format: 0201 (0603 Metric) (exact match required)
• Physical dimensions: 0.024" L x 0.012" W / 0.60mm x 0.30mm (exact match required)
• Height - Seated (Max): 0.010" (0.26mm) (exact match required)

Compliance & Certification:

• Automotive AEC-Q200 rating (exact match required)
• RoHS3 compliance (exact match required)
• Moisture Sensitivity Level 1 (exact match required)

Substitute parts must match all parameters listed above. Parts from the same manufacturer series (RK73B) with identical electrical and mechanical specifications are eligible for substitution.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM222G is the direct equivalent substitute for the RK73B1HTTC222G. Both parts are manufactured by KOA Speer Electronics, Inc., belong to the RK73B series, and share identical electrical and mechanical specifications. The critical distinction is product status: the main part (RK73B1HTTC222G) is classified as "Not For New Designs," while the substitute (RK73B1HTTCM222G) maintains "Active" status.

For new design implementations, the RK73B1HTTCM222G is the appropriate selection. For existing designs currently using RK73B1HTTC222G, the substitute provides full functional and physical compatibility without design modification. Both parts comply with AEC-Q200 automotive standards, ROHS3 environmental regulations, and carry identical moisture sensitivity ratings. The electrical performance, thermal characteristics, and mechanical fit are equivalent across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM222G be used as a direct replacement for RK73B1HTTC222G in existing assemblies?

A: Yes. The substitute part matches all electrical parameters (2.2 kOhms, ±2% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient), mechanical dimensions (0201 package, 0.024" L x 0.012" W, 0.010" max height), and compliance certifications (AEC-Q200, ROHS3, MSL 1). No design or layout modifications are required.

Q: What is the difference between RK73B1HTTC222G and RK73B1HTTCM222G?

A: The parts are electrically and mechanically identical. The primary difference is product lifecycle status: RK73B1HTTC222G is "Not For New Designs," while RK73B1HTTCM222G is "Active." The substitute represents the current production equivalent from the manufacturer.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the main part and substitute carry AEC-Q200 automotive qualification, confirming suitability for automotive-grade applications within the specified operating temperature range of -55°C to 155°C.

Q: Does the 0201 package dimension remain identical between these parts?

A: Yes. Both parts use the 0201 (0603 Metric) package with identical physical dimensions: 0.024" length x 0.012" width (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints and assembly processes remain unchanged.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry Moisture Sensitivity Level 1 (unlimited shelf life), and meet identical environmental and regulatory standards. REACH and ECCN classifications are equivalent.