RK73B1HTTC161G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC161G is a 160 Ohm ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," making identification of active equivalent alternatives essential for ongoing production and maintenance applications requiring this specific resistance value and power rating.

Substiute Parts

RK73B1HTTC161G

KOA Speer Electronics, Inc.In Stock: 1233RK73B1HTTC161G Datasheet

Current PartRFQ

RK73B1HTTCM161G

KOA Speer Electronics, Inc.In Stock: 1177RK73B1HTTCM161G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC161G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 160 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 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 maximum: 0.010" (0.26mm) (exact match required)

Compliance & Certification:

• Automotive qualification: AEC-Q200 (required for automotive applications)
• RoHS compliance: ROHS3 Compliant (required for regulatory compliance)
• Moisture sensitivity: MSL 1 (Unlimited) (exact match required)

Substitute parts must match all electrical, mechanical, and compliance parameters without exception. Series designation and product status may differ, provided the active substitute maintains full functional and regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM161G serves as the direct active equivalent to the RK73B1HTTC161G. Both components are manufactured by KOA Speer Electronics within the RK73B series and maintain identical electrical, mechanical, and thermal specifications. The primary distinction is product status: the original part is designated "Not For New Designs," while the substitute is classified as "Active."

For applications requiring the 160 Ohm ±2% 0.05W 0201 package resistor with AEC-Q200 automotive qualification, the RK73B1HTTCM161G is the recommended selection. Both parts satisfy ROHS3 compliance and MSL 1 moisture sensitivity requirements. Inventory availability is comparable for both variants, with the substitute maintaining 1134 pieces in stock.

The substitution is valid for all circuit applications where the original part was specified, including automotive environments operating within the -55°C to 155°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM161G replace RK73B1HTTC161G in existing designs?

A: Yes. The substitute part maintains identical electrical specifications (160 Ohms ±2%, 0.05W), thermal characteristics (±200ppm/°C, -55°C ~ 155°C), mechanical dimensions (0201 package, 0.60mm x 0.30mm), and automotive certification (AEC-Q200). Direct substitution is valid without circuit modification.

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

A: This designation indicates the RK73B1HTTC161G is in mature or end-of-life phase. The RK73B1HTTCM161G, classified as "Active," represents the current production equivalent and is the appropriate selection for ongoing applications and new designs.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both components are 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC161G and RK73B1HTTCM161G carry AEC-Q200 qualification, meeting automotive industry reliability and performance standards.

Q: What is the moisture sensitivity level for these resistors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are there differences in RoHS compliance?

A: No. Both components are ROHS3 Compliant, meeting current regulatory requirements for hazardous substance restrictions.

Q: Can these parts be used interchangeably in high-temperature automotive circuits?

A: Yes. Both parts operate across the identical temperature range of -55°C to 155°C with matching temperature coefficient of ±200ppm/°C, ensuring consistent performance in automotive thermal environments.