Equivalent & Substitute Parts for RK73B1HTTC165G

Part Overview

The RK73B1HTTC165G is a 1.6 MOhms ±2% 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 The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 maintains compliance with automotive reliability requirements for existing applications or legacy system support.

Substiute Parts

RK73B1HTTC165G

KOA Speer Electronics, Inc.In Stock: 956RK73B1HTTC165G Datasheet

Current PartRFQ

RK73B1HTTCM165G

KOA Speer Electronics, Inc.In Stock: 786RK73B1HTTCM165G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC165G is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-negotiable):

• Resistance value: 1.6 MOhms
• Tolerance: ±2%
• Power rating: 0.05W minimum
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C minimum

Mechanical Parameters (Non-negotiable):

• Package type: 0201 (0603 metric)
• Physical dimensions: 0.024" L × 0.012" W (0.60mm × 0.30mm)
• Number of terminations: 2

Compliance Parameters (Non-negotiable):

• Automotive rating: AEC-Q200
• RoHS status: ROHS3 Compliant
• Composition: Thick Film

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

Parameter Comparison

Engineering Selection Recommendations

RK73B1HTTCM165G is the direct equivalent substitute for RK73B1HTTC165G.

Substitution Basis:

• All electrical parameters are identical: 1.6 MOhms resistance, ±2% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient, and -55°C to 155°C operating range
• Mechanical compatibility is complete: identical 0201 package footprint and physical dimensions ensure PCB layout compatibility without redesign
• Compliance status is maintained: both parts carry AEC-Q200 automotive qualification and ROHS3 compliance
• The substitute part is in active production status, whereas the main part is classified as "Not For New Designs"

Selection Criteria: Use RK73B1HTTCM165G for new procurement, design updates, or legacy system support. The substitute maintains full electrical and mechanical equivalence while offering the advantage of current manufacturer support and active production status.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM165G be used as a direct replacement for RK73B1HTTC165G in existing designs?

A: Yes. The substitute part is electrically and mechanically identical. All critical parameters—resistance value, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and automotive AEC-Q200 rating—match exactly. No circuit redesign or PCB layout modification is required.

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

A: The primary difference is product status. RK73B1HTTC165G is classified as "Not For New Designs," indicating it has been superseded. RK73B1HTTCM165G is the active production equivalent from the same manufacturer and series. Both parts are functionally and physically identical.

Q: Are there any packaging differences between the main part and substitute?

A: No. Both parts use 0201 package (0603 metric) with identical physical dimensions of 0.024" L × 0.012" W (0.60mm × 0.30mm) and maximum seated height of 0.010" (0.26mm). They are footprint-compatible on PCBs.

Q: Does the substitute part meet automotive requirements?

A: Yes. RK73B1HTTCM165G carries AEC-Q200 qualification, the same automotive standard as the main part. It is suitable for automotive applications requiring this certification level.

Q: Is the substitute part RoHS compliant?

A: Yes. RK73B1HTTCM165G is ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the main part.

Q: Can I mix the main part and substitute part in the same production batch?

A: Yes. Since both parts are electrically and mechanically identical with matching compliance certifications, they can be used interchangeably in the same circuit or production run without functional or reliability impact.

Q: What is the temperature coefficient significance for this resistor?

A: The ±200ppm/°C temperature coefficient indicates the resistance value will drift by up to 200 parts per million for each degree Celsius change in operating temperature. Both the main part and substitute have identical temperature coefficients, ensuring equivalent performance across the -55°C to 155°C operating range.