RK73B1HTTC755J Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC755J is a 7.5 MOhms ±5% thick film chip resistor in 0201 package (0603 metric) rated for 0.05W power dissipation. This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product status alternatives where applicable.

Substiute Parts

RK73B1HTTC755J

KOA Speer Electronics, Inc.In Stock: 854RK73B1HTTC755J Datasheet

Current PartRFQ

RK73B1HTTCM755J

KOA Speer Electronics, Inc.In Stock: 1209RK73B1HTTCM755J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC755J is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Resistance value: 7.5 MOhms
• Tolerance: ±5%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height - Seated (Max): 0.010" (0.26mm)
• Number of terminations: 2

Compliance & Material Parameters (Must Match Exactly):

• Composition: Thick Film
• Automotive rating: AEC-Q200
• RoHS status: ROHS3 Compliant
• Moisture sensitivity level: MSL 1

Substitute parts must satisfy all parameters listed above. Deviations in any electrical, mechanical, or compliance parameter disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM755J is the direct equivalent substitute for RK73B1HTTC755J. All electrical, mechanical, and compliance parameters are identical. The primary distinction is product status: RK73B1HTTC755J is classified as "Not For New Designs," while RK73B1HTTCM755J maintains active status from the manufacturer.

For new design implementations, RK73B1HTTCM755J is the appropriate selection. Both parts are manufactured by KOA Speer Electronics within the RK73B series and maintain full AEC-Q200 automotive qualification and ROHS3 compliance. The substitute part is available in higher inventory (1112 Pcs vs. 783 Pcs), supporting improved supply chain continuity.

Existing designs utilizing RK73B1HTTC755J may continue operation without modification, as the substitute part is electrically and mechanically interchangeable. No circuit redesign or PCB layout modification is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM755J be used as a direct replacement for RK73B1HTTC755J in existing assemblies?

A: Yes. RK73B1HTTCM755J is a direct equivalent substitute. All electrical parameters (resistance, tolerance, power rating, temperature coefficient), mechanical dimensions, package specifications, and compliance certifications are identical. No circuit modifications or PCB rework is required.

Q: Why is RK73B1HTTC755J marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's active product portfolio. RK73B1HTTCM755J represents the current active equivalent. For new design implementations, RK73B1HTTCM755J should be specified.

Q: Are there any differences in packaging between these two parts?

A: Both parts use 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). Packaging format differences are not specified in the provided data.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC755J and RK73B1HTTCM755J are AEC-Q200 qualified for automotive applications and maintain ROHS3 compliance with MSL 1 (unlimited) moisture sensitivity rating.

Q: What is the operating temperature range for these resistors?

A: Both parts operate across -55°C to 155°C with a temperature coefficient of ±200ppm/°C, suitable for automotive under-hood and high-temperature environments.

Q: Is there a supply availability difference between these parts?

A: RK73B1HTTCM755J has higher current inventory (1112 Pcs) compared to RK73B1HTTC755J (783 Pcs), providing improved supply chain availability for procurement planning.