RK73G1HTTC1800F Equivalent & Substitute Parts

Part Overview

The RK73G1HTTC1800F is a 180 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. 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.

Substiute Parts

RK73G1HTTC1800F

KOA Speer Electronics, Inc.In Stock: 883RK73G1HTTC1800F Datasheet

Current PartRFQ

RK73G1HTTCM1800F

KOA Speer Electronics, Inc.In Stock: 992RK73G1HTTCM1800F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73G1HTTC1800F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 180 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package type: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)

Compliance & Certification:

• Automotive rating: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts must match all parameters listed above. Variations in any parameter disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The RK73G1HTTCM1800F serves as the direct equivalent to the RK73G1HTTC1800F. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73G series, and share identical electrical, mechanical, and compliance specifications.

The primary distinction between these parts is product status: the RK73G1HTTC1800F is classified as "Not For New Designs," while the RK73G1HTTCM1800F maintains "Active" status. For applications requiring ongoing component procurement, design updates, or new production runs, the RK73G1HTTCM1800F is the appropriate selection.

Both parts maintain full AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity rating, ensuring compatibility in automotive and industrial applications requiring these certifications.

Frequently Asked Questions (FAQ)

Q: Can RK73G1HTTCM1800F replace RK73G1HTTC1800F in existing designs?

A: Yes. Both parts are electrically and mechanically identical, with matching resistance (180 Ohms ±1%), power rating (0.05W), package (0201), temperature coefficient (±50ppm/°C), and operating range (-55°C ~ 155°C). They are direct substitutes.

Q: Why is the main part marked "Not For New Designs"?

A: Product status indicates manufacturing or supply lifecycle decisions by the manufacturer. The RK73G1HTTCM1800F, with "Active" status, is the recommended choice for new designs and ongoing procurement.

Q: Are there any package or footprint differences?

A: No. Both parts use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm).

Q: Do both parts meet automotive standards?

A: Yes. Both components are AEC-Q200 qualified, ROHS3 compliant, and rated for -55°C ~ 155°C operation, meeting automotive application requirements.

Q: What is the difference between the part numbers?

A: The part numbers differ only in the suffix designation (HTTC vs. HTTCM). This suffix reflects internal KOA Speer Electronics manufacturing or packaging variation, but does not affect electrical or mechanical performance.