RK73B1HTTC105G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC105G is a 1 MOhm ±2% thick film chip resistor in 0201 package (0603 metric) rated for automotive applications under AEC-Q200 standard. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for existing applications or legacy system maintenance.

Substiute Parts

RK73B1HTTC105G

KOA Speer Electronics, Inc.In Stock: 950RK73B1HTTC105G Datasheet

Current PartRFQ

RK73B1HTTCM105G

KOA Speer Electronics, Inc.In Stock: 1002RK73B1HTTCM105G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC105G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

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

Mechanical & Package Parameters:

• Package type: 0201 (0603 Metric)
• Composition: Thick Film
• Number of terminations: 2

Compliance & Certification:

• Automotive rating: AEC-Q200
• RoHS status: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

All substitute parts must match these parameters without deviation to ensure functional and regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

RK73B1HTTCM105G is the direct substitute for RK73B1HTTC105G. Both components are manufactured by KOA Speer Electronics, Inc., and maintain identical electrical, mechanical, and compliance specifications. The primary distinction is product status: the original part is classified as "Not For New Designs," while the substitute is Active, indicating ongoing manufacturer support and availability.

For applications currently using RK73B1HTTC105G, transition to RK73B1HTTCM105G is supported by complete parameter equivalence. Both parts satisfy AEC-Q200 automotive qualification, ROHS3 compliance, and unlimited moisture sensitivity rating. No circuit redesign or validation is required when substituting between these parts, provided the application remains within the specified electrical and thermal operating parameters.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM105G be used as a direct replacement for RK73B1HTTC105G?

A: Yes. Both parts are electrically and mechanically identical with matching resistance (1 MOhms), tolerance (±2%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), and operating range (-55°C ~ 155°C). Both carry AEC-Q200 automotive certification and ROHS3 compliance.

Q: Why is RK73B1HTTC105G marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's active product portfolio. RK73B1HTTCM105G represents the current active equivalent. Existing designs may continue using the original part, but new designs should transition to the active substitute.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use the 0201 package (0603 metric) with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are interchangeable.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC105G and RK73B1HTTCM105G are rated to AEC-Q200 standard for automotive applications and operate across the full temperature range of -55°C ~ 155°C.

Q: What is the moisture sensitivity rating for these parts?

A: Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related storage or handling restrictions.