RK73H1HTTC75R0D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC75R0D is a 75 Ohm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction. The part is currently classified as "Not For New Designs," making identification of active equivalent alternatives essential for ongoing production and maintenance applications requiring this specific electrical and mechanical specification.

Substiute Parts

RK73H1HTTC75R0D

KOA Speer Electronics, Inc.In Stock: 764RK73H1HTTC75R0D Datasheet

Current PartRFQ

RK73H1HTTCM75R0D

KOA Speer Electronics, Inc.In Stock: 882RK73H1HTTCM75R0D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC75R0D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 75 Ohms (exact match required)
• Tolerance: ±0.5% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

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

Compliance & Environmental Parameters:

• Automotive rating: AEC-Q200 (exact match required)
• Composition: Thick Film (exact match required)
• Moisture resistance: Required
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The substitute part RK73H1HTTCM75R0D meets all specified electrical, mechanical, and compliance parameters and is classified as "Active" product status, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM75R0D is the manufacturer-recommended substitute for the RK73H1HTTC75R0D. Both components are manufactured by KOA Speer Electronics, Inc., and belong to the RK73H series. The substitute part maintains identical electrical specifications (75 Ohms ±0.5%, 0.05W), mechanical dimensions (0201 package), and automotive compliance (AEC-Q200, ROHS3 Compliant).

The primary distinction is product status: the main part is classified as "Not For New Designs," while the substitute is classified as "Active." This status difference reflects manufacturing lifecycle management and indicates that the substitute part is the current production equivalent supported for ongoing applications.

Both parts satisfy identical compliance requirements including AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. The substitute part is available in higher inventory quantity (850 Pcs versus 738 Pcs), supporting supply chain continuity.

For applications requiring the RK73H1HTTC75R0D specification, the RK73H1HTTCM75R0D provides direct functional and mechanical compatibility with active manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM75R0D be used as a direct replacement for the RK73H1HTTC75R0D?

A: Yes. The RK73H1HTTCM75R0D is the manufacturer-recommended equivalent. Both parts share identical electrical parameters (75 Ohms ±0.5%, 0.05W), mechanical dimensions (0201 package, 0.60mm x 0.30mm), temperature characteristics (±200ppm/°C, -55°C ~ 155°C), and automotive compliance (AEC-Q200). No circuit modifications or design changes are required.

Q: What is the significance of the "Not For New Designs" status on the main part?

A: This status indicates that the RK73H1HTTC75R0D is in the mature or end-of-life phase of its product lifecycle. Manufacturers apply this designation to encourage migration to active alternatives. The RK73H1HTTCM75R0D is the active equivalent and is the recommended selection for new applications and ongoing production.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both parts are packaged in 0201 (0603 Metric) with identical dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the RK73H1HTTC75R0D and RK73H1HTTCM75R0D are AEC-Q200 qualified and ROHS3 compliant. Both feature moisture-resistant thick film construction with MSL 1 (Unlimited) rating, suitable for automotive and industrial applications.

Q: What is the difference in the part numbers between the main part and substitute?

A: The part numbers differ in the suffix: RK73H1HTTC75R0D (main) versus RK73H1HTTCM75R0D (substitute). The "M" designation in the substitute part number indicates a manufacturing or packaging variant within the same electrical and mechanical specification class. Both parts are from the same RK73H series and manufacturer.

Q: Are there any electrical performance differences between the two parts?

A: No. Both parts have identical electrical specifications: 75 Ohms resistance, ±0.5% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient, and -55°C ~ 155°C operating temperature range. Electrical performance is equivalent.

Q: Which part should be selected for new designs?

A: The RK73H1HTTCM75R0D should be selected for new designs. This part carries "Active" product status and represents the current production equivalent with ongoing manufacturer support. The main part (RK73H1HTTC75R0D) is designated "Not For New Designs."