RK73B1HTTC434G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC434G is a 430 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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the product line.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

RK73B1HTTC434G

KOA Speer Electronics, Inc.In Stock: 1063RK73B1HTTC434G Datasheet

Current PartRFQ

RK73B1HTTCM434G

KOA Speer Electronics, Inc.In Stock: 674RK73B1HTTCM434G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC434G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (430 kOhms), tolerance (±2%), and power rating (0.05W) must be identical. Temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C) establish thermal performance boundaries.

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 match exactly to ensure PCB compatibility and assembly process compatibility.

Compliance Parameters: AEC-Q200 automotive qualification, RoHS3 compliance, and MSL 1 rating are mandatory for applications requiring automotive-grade reliability and environmental compliance.

Composition: Thick film construction must be maintained to preserve frequency response, noise characteristics, and temperature stability.

Substitute parts must originate from the same manufacturer series (RK73B) to ensure process consistency and performance predictability.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM434G is the direct substitute for RK73B1HTTC434G. Both parts are manufactured by KOA Speer Electronics, Inc. within the RK73B series and maintain identical electrical, mechanical, and thermal specifications. The substitute part differs only in product status: RK73B1HTTCM434G is classified as "Active," indicating current production and long-term availability, whereas the main part is "Not For New Designs."

For new circuit designs and production transitions, RK73B1HTTCM434G is the appropriate selection. Both parts satisfy AEC-Q200 automotive qualification requirements, ROHS3 environmental compliance, and MSL 1 moisture sensitivity specifications. The electrical performance, including resistance tolerance (±2%), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C ~ 155°C), is functionally equivalent.

Existing designs using RK73B1HTTC434G can transition to RK73B1HTTCM434G without circuit modification or re-qualification, provided the original design validation confirmed compatibility with the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM434G be used as a direct replacement for RK73B1HTTC434G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value (430 kOhms), tolerance (±2%), power rating (0.05W), package format (0201), and thermal characteristics. No circuit modification is required.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. RK73B1HTTC434G is classified as "Not For New Designs," while RK73B1HTTCM434G is "Active." The substitute part represents the current production equivalent with identical specifications and improved supply chain availability.

Q: Are both parts AEC-Q200 qualified?

A: Yes. Both RK73B1HTTC434G and RK73B1HTTCM434G meet AEC-Q200 automotive qualification standards and are suitable for automotive applications requiring this certification.

Q: Do these parts have the same physical dimensions?

A: Yes. Both parts are packaged in 0201 format (0603 metric) with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). They are PCB-compatible without layout modification.

Q: What is the temperature coefficient specification?

A: Both parts have a temperature coefficient of ±200ppm/°C and operate across the range of -55°C to 155°C, ensuring stable resistance performance across automotive temperature extremes.

Q: Are both parts RoHS compliant?

A: Yes. Both RK73B1HTTC434G and RK73B1HTTCM434G are ROHS3 compliant and meet environmental regulatory requirements for restricted substance use.

Q: What is the moisture sensitivity level?

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