RK73B1HTTC104G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC104G is a 100 kOhms ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). This component is manufactured by KOA Speer Electronics, Inc. and meets AEC-Q200 automotive qualification 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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 maintain identical electrical and mechanical specifications.

Substiute Parts

RK73B1HTTC104G

KOA Speer Electronics, Inc.In Stock: 1020RK73B1HTTC104G Datasheet

Current PartRFQ

RK73B1HTTCM104G

KOA Speer Electronics, Inc.In Stock: 871RK73B1HTTCM104G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC104G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (100 kOhms), tolerance (±2%), and power rating (0.05W) must be identical. Temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C) define thermal performance boundaries and must match exactly.

Mechanical Parameters: Package format (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and number of terminations (2) must be identical to ensure PCB footprint compatibility and assembly process compatibility.

Compliance & Certification: AEC-Q200 automotive qualification, RoHS3 compliance, and MSL 1 rating must be maintained. These certifications are mandatory for automotive applications and cannot be compromised.

Composition: Thick film construction must be preserved to maintain electrical performance characteristics and temperature stability.

Substitutes are identified only when all parameters listed above are identical to the main part specification. Product status (Active vs. Not For New Designs) does not affect substitution eligibility but indicates manufacturing lifecycle position.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM104G is a direct equivalent substitute for the RK73B1HTTC104G. Both parts are manufactured by KOA Speer Electronics, Inc. within the RK73B series and share identical electrical, mechanical, and thermal specifications. The primary distinction is product lifecycle status: the original part is classified as "Not For New Designs," while the substitute is Active.

For applications currently using RK73B1HTTC104G, transition to RK73B1HTTCM104G is supported by complete parameter equivalence. Both parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating, ensuring compatibility with automotive-grade assembly and reliability requirements. The substitute part is available in higher inventory (847 Pcs vs. 981 Pcs), supporting ongoing production needs.

No electrical performance degradation or design modification is required when substituting RK73B1HTTCM104G for RK73B1HTTC104G. PCB layout, assembly processes, and thermal management strategies remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM104G be used as a direct replacement for RK73B1HTTC104G without design changes?

A: Yes. Both parts are electrically and mechanically identical. Resistance (100 kOhms ±2%), power rating (0.05W), package format (0201), temperature range (-55°C ~ 155°C), and all compliance certifications are identical. No PCB layout or assembly process modifications are required.

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

A: This designation indicates the RK73B1HTTC104G has been superseded in the manufacturer's product line. The RK73B1HTTCM104G represents the active equivalent. For new designs, RK73B1HTTCM104G should be specified. Existing designs using RK73B1HTTC104G can transition to the substitute without technical risk.

Q: Are the physical dimensions and PCB footprints identical?

A: Yes. Both parts are 0201 package format with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are identical, and no layout modifications are necessary.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC104G and RK73B1HTTCM104G are AEC-Q200 qualified, ROHS3 compliant, and rated MSL 1. They are suitable for automotive applications without additional qualification testing.

Q: Is there a difference in temperature coefficient or operating temperature range?

A: No. Both parts have identical temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C). Thermal performance and stability are equivalent.

Q: What is the packaging difference between the two parts?

A: The main part specifies "Tape & Reel (TR)" packaging. The substitute part does not specify packaging format in the provided data. Confirm packaging requirements with the supplier if tape and reel format is mandatory for your assembly process.