RK73H1HTTC2102D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC2102D is a 21 kOhms ±0.5% thick film chip resistor in 0201 package (0603 Metric) rated for 0.05W (1/20W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and meets automotive AEC-Q200 qualification with moisture-resistant construction. The part carries a "Not For New Designs" status, necessitating identification of active equivalent alternatives for ongoing production and new design implementations.

Substiute Parts

RK73H1HTTC2102D

KOA Speer Electronics, Inc.In Stock: 1228RK73H1HTTC2102D Datasheet

Current PartRFQ

RK73H1HTTCM2102D

KOA Speer Electronics, Inc.In Stock: 987RK73H1HTTCM2102D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC2102D is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 21 kOhms
• Tolerance: ±0.5%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture sensitivity: MSL 1 (Unlimited)
• RoHS compliance: ROHS3

The RK73H1HTTCM2102D qualifies as a direct substitute based on identical electrical specifications, mechanical dimensions, environmental ratings, and compliance certifications. The primary distinction is product status: the substitute part is Active, whereas the main part is designated Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM2102D is the direct equivalent for the RK73H1HTTC2102D. Both parts are manufactured by KOA Speer Electronics, Inc. within the RK73H series and share identical electrical, mechanical, and environmental specifications. The substitute part maintains full AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status.

The primary selection criterion is product lifecycle status. The main part (RK73H1HTTC2102D) is designated "Not For New Designs," indicating end-of-life trajectory. The substitute part (RK73H1HTTCM2102D) carries "Active" status, confirming ongoing manufacturing support and availability for current and future production requirements.

For applications requiring the 21 kOhms ±0.5% 0.05W 0201 package resistor with automotive AEC-Q200 qualification, the RK73H1HTTCM2102D provides full functional and mechanical compatibility with superior supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM2102D be used as a direct replacement for RK73H1HTTC2102D in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The RK73H1HTTCM2102D provides direct pin-for-pin and footprint compatibility with identical resistance value (21 kOhms), tolerance (±0.5%), power rating (0.05W), and 0201 package dimensions.

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

A: This designation indicates the RK73H1HTTC2102D is in end-of-life phase. KOA Speer Electronics, Inc. recommends transitioning to the active equivalent RK73H1HTTCM2102D for new designs and ongoing production to ensure long-term supply availability.

Q: Are there differences in automotive qualification between these parts?

A: No. Both parts maintain identical AEC-Q200 automotive qualification, operating temperature range (-55°C ~ 155°C), and moisture-resistant construction (MSL 1).

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts share identical 0201 package dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm).

Q: Is the RoHS and REACH compliance identical?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory requirements.

Q: What is the temperature coefficient specification for both parts?

A: Both parts specify ±200ppm/°C temperature coefficient across the -55°C ~ 155°C operating range.