RK73H1HTTC2R40F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC2R40F is a 2.4 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in the 0201 (0603 Metric) package format. This component is rated for 0.05W (1/20W) power dissipation and meets automotive AEC-Q200 qualification standards with moisture-resistant construction. The part is currently in active production status with 7348 units available in inventory. Finding equivalent or substitute parts is necessary to ensure supply chain continuity, optimize procurement costs, and maintain design flexibility across manufacturing batches and supplier availability windows.

Substiute Parts

RK73H1HTTC2R40F

KOA Speer Electronics, Inc.In Stock: 7422RK73H1HTTC2R40F Datasheet

Current PartRFQ

RK73H1HTTCM2R40F

KOA Speer Electronics, Inc.In Stock: 891RK73H1HTTCM2R40F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC2R40F are identified based on strict electrical and mechanical parameter matching within the RK73H series. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Resistance value: 2.4 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±400ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package format: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Certification:

• Automotive AEC-Q200 rating (required for automotive applications)
• RoHS3 compliance (required for regulatory conformance)
• MSL 1 rating (required for moisture sensitivity)

Substitute parts must maintain identical electrical performance characteristics and physical dimensions to ensure direct replacement capability without circuit redesign or PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

Both the RK73H1HTTC2R40F and RK73H1HTTCM2R40F are active production parts from KOA Speer Electronics, Inc. and are fully qualified for direct substitution. Selection between these parts should be based on the following factors:

Supply Availability: The RK73H1HTTC2R40F maintains higher inventory levels (7348 units) compared to the RK73H1HTTCM2R40F (785 units). For high-volume production requirements, the main part number is preferred.

Compliance Certification: Both parts maintain ROHS3 compliance and AEC-Q200 automotive qualification. Both are suitable for automotive applications requiring moisture-resistant thick film construction.

Electrical Performance: Identical electrical specifications across all critical parameters ensure interchangeable performance in circuit applications. No circuit redesign or validation testing is required when substituting between these part numbers.

Packaging: Both parts are supplied in 0201 (0603 Metric) package format with identical physical dimensions and termination configuration, enabling direct PCB placement without layout modification.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM2R40F be used as a direct replacement for RK73H1HTTC2R40F?

A: Yes. Both parts are electrically and mechanically identical with matching resistance values (2.4 Ohms ±1%), power ratings (0.05W), package dimensions (0201), temperature coefficients (±400ppm/°C), and operating temperature ranges (-55°C ~ 155°C). Both maintain AEC-Q200 automotive qualification and ROHS3 compliance.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of: resistance value, tolerance, power rating, package format, composition type, temperature coefficient, operating temperature range, and automotive/compliance certifications. Any deviation in these parameters disqualifies a part from direct substitution.

Q: Are there any differences in moisture sensitivity between these parts?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity level rating, indicating identical moisture handling and storage requirements.

Q: Can these parts be used interchangeably in automotive applications?

A: Yes. Both parts meet AEC-Q200 automotive qualification standards and are moisture-resistant thick film resistors suitable for automotive circuit applications. No additional validation is required for automotive use.

Q: What is the significance of the "H" designation in the part number?

A: The "H" in RK73H1H indicates the base product configuration within the RK73H series. Variations in the full part number (such as the "M" designation in RK73H1HTTCM2R40F) represent different manufacturing or packaging options while maintaining identical electrical and mechanical specifications.

Q: Are both parts available in the same packaging format?

A: Both parts are supplied in 0201 (0603 Metric) package format with identical physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). The main part is available in Tape & Reel (TR) format with higher inventory availability.