RK73B1HTTC110G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC110G is an 11 Ohm ±2% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," which necessitates identification of equivalent substitute components that maintain identical electrical and mechanical specifications while offering active product status and continued availability.

Substiute Parts

RK73B1HTTC110G

KOA Speer Electronics, Inc.In Stock: 1094RK73B1HTTC110G Datasheet

Current PartRFQ

RK73B1HTTCM110G

KOA Speer Electronics, Inc.In Stock: 1117RK73B1HTTCM110G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC110G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 11 Ohms (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 type: 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 qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (Unlimited) (exact match required)

Substitute parts must originate from the same manufacturer series (RK73B) and maintain identical composition (Thick Film) to ensure functional and reliability equivalence in automotive applications.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM110G serves as the direct substitute for the RK73B1HTTC110G. Both components are manufactured by KOA Speer Electronics, Inc., and maintain identical electrical, mechanical, and compliance specifications. The primary distinction is product status: the main part (RK73B1HTTC110G) is designated "Not For New Designs," while the substitute (RK73B1HTTCM110G) maintains "Active" status.

For new automotive circuit designs requiring an 11 Ohm ±2% 0.05W thick film resistor in 0201 package with AEC-Q200 qualification, the RK73B1HTTCM110G is the appropriate selection. Both parts are ROHS3 compliant and carry MSL 1 rating, confirming suitability for automotive applications without moisture sensitivity constraints.

The electrical performance, thermal characteristics, and mechanical compatibility are identical between the two parts, ensuring direct substitution without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM110G be used as a direct replacement for RK73B1HTTC110G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The RK73B1HTTCM110G maintains the same 11 Ohm resistance, ±2% tolerance, 0.05W power rating, 0201 package dimensions, AEC-Q200 automotive qualification, and operating temperature range (-55°C ~ 155°C). Direct substitution is valid without circuit modification.

Q: What is the significance of the "Not For New Designs" status on the RK73B1HTTC110G?

A: This designation indicates the part is in mature or end-of-life phase. For new circuit development, the RK73B1HTTCM110G (Active status) is the recommended selection. Both parts are functionally equivalent and available in current inventory.

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

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

Q: Do both parts meet automotive compliance requirements?

A: Yes. Both RK73B1HTTC110G and RK73B1HTTCM110G are AEC-Q200 qualified, ROHS3 compliant, and carry MSL 1 (Unlimited) moisture sensitivity rating. They are suitable for automotive applications without additional qualification testing.

Q: What is the temperature coefficient difference, if any?

A: There is no difference. Both parts specify ±200ppm/°C temperature coefficient and operate across the identical -55°C ~ 155°C temperature range, ensuring equivalent thermal performance in automotive environments.

Q: Can these parts be used interchangeably in high-reliability applications?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., from the same RK73B series using thick film composition. Electrical stability, reliability characteristics, and failure rate profiles are equivalent. The primary distinction is product lifecycle status, not performance or reliability.