RK73G1HTTC1802D Equivalent & Substitute Parts

Part Overview

The RK73G1HTTC1802D is an 18 kOhms ±0.5% thick film chip resistor in 0201 package (0603 Metric) rated for 0.05W (1/20W) power dissipation. This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently marked as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support existing production requirements.

Substiute Parts

RK73G1HTTC1802D

KOA Speer Electronics, Inc.In Stock: 1032RK73G1HTTC1802D Datasheet

Current PartRFQ

RK73G1HTTCM1802D

KOA Speer Electronics, Inc.In Stock: 1168RK73G1HTTCM1802D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73G1HTTC1802D is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain constant for a part to function as a direct substitute:

Mandatory Match Parameters:

• Resistance value: 18 kOhms (exact)
• Tolerance: ±0.5% (exact)
• Power rating: 0.05W minimum
• Package: 0201 (0603 Metric) (exact)
• Composition: Thick Film
• Temperature coefficient: ±50ppm/°C (exact)
• Operating temperature range: -55°C ~ 155°C (minimum)
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant

The RK73G1HTTCM1802D qualifies as a manufacturer-recommended substitute because it maintains identical specifications across all these parameters while offering improved product status (Active vs. Not For New Designs).

Parameter Comparison

Engineering Selection Recommendations

The RK73G1HTTCM1802D is the manufacturer-recommended substitute for the RK73G1HTTC1802D. Selection of this substitute part is based on the following engineering criteria:

Product Status Consideration: The original part RK73G1HTTC1802D carries a "Not For New Designs" status, indicating the manufacturer has transitioned this component to end-of-life. The substitute RK73G1HTTCM1802D maintains Active product status, ensuring long-term availability and continued manufacturer support.

Compliance and Certification: Both parts maintain identical AEC-Q200 automotive qualification and ROHS3 compliance. No regulatory or certification gaps exist between the original and substitute.

Electrical and Mechanical Equivalence: All critical parameters—resistance value, tolerance, power rating, temperature coefficient, and operating temperature range—are identical. The 0201 package dimensions and physical characteristics remain unchanged, ensuring direct PCB footprint compatibility.

Supply Chain Continuity: The substitute part is available in higher inventory (1065 Pcs vs. 1013 Pcs), supporting production continuity and reducing supply risk.

For applications currently using RK73G1HTTC1802D, transition to RK73G1HTTCM1802D is supported without design modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can RK73G1HTTCM1802D be used as a direct replacement for RK73G1HTTC1802D without PCB redesign?

A: Yes. Both parts are identical in electrical specifications, package dimensions, and physical footprint. No PCB layout changes are required. The substitute part fits the same 0201 (0603 Metric) land pattern.

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

A: The primary difference is product status. RK73G1HTTC1802D is marked "Not For New Designs," while RK73G1HTTCM1802D is Active. The "M" designation in the substitute part number indicates the manufacturer's current production variant. All electrical and mechanical specifications are identical.

Q: Are both parts AEC-Q200 qualified?

A: Yes. Both RK73G1HTTC1802D and RK73G1HTTCM1802D carry AEC-Q200 automotive qualification and are suitable for automotive applications requiring this certification.

Q: Do these parts have the same temperature coefficient?

A: Yes. Both parts have a temperature coefficient of ±50ppm/°C and operate across the identical temperature range of -55°C to 155°C.

Q: Is the tolerance specification the same?

A: Yes. Both parts are specified at ±0.5% tolerance for the 18 kOhms resistance value.

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

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements.

Q: Can I use these parts interchangeably in existing inventory?

A: Yes. The parts are electrically and mechanically equivalent. Existing designs using RK73G1HTTC1802D can accept RK73G1HTTCM1802D without functional impact or re-qualification.