RK73H1HTTC16R5D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC16R5D is a 16.5 Ohm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated for 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC16R5D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identifying equivalent substitute parts is necessary for design continuity, inventory management, and ensuring long-term component availability for existing applications and legacy system support.

Substiute Parts

RK73H1HTTC16R5D

KOA Speer Electronics, Inc.In Stock: 907RK73H1HTTC16R5D Datasheet

Current PartRFQ

RK73H1HTTCM16R5D

KOA Speer Electronics, Inc.In Stock: 877RK73H1HTTCM16R5D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC16R5D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 16.5 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 & Package Parameters:

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

Compliance & Certification Parameters:

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

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

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM16R5D is a direct electrical and mechanical equivalent to the RK73H1HTTC16R5D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series, and share identical electrical specifications, package dimensions, and automotive compliance certifications.

The primary distinction between these parts is product lifecycle status. The RK73H1HTTC16R5D is designated "Not For New Designs," while the RK73H1HTTCM16R5D carries an "Active" product status. This indicates that the RK73H1HTTCM16R5D represents the current production equivalent and is the recommended selection for new circuit designs and long-term supply chain planning.

Both parts maintain full AEC-Q200 automotive qualification, ROHS3 compliance, and identical moisture resistance characteristics (MSL 1 - Unlimited). Substitution between these parts introduces no electrical, thermal, or mechanical performance differences.

For applications currently using the RK73H1HTTC16R5D, transition to the RK73H1HTTCM16R5D is supported without circuit redesign or performance impact.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM16R5D be used as a direct replacement for the RK73H1HTTC16R5D?

A: Yes. The RK73H1HTTCM16R5D is a direct equivalent. All electrical parameters (resistance, tolerance, power rating, temperature coefficient), mechanical dimensions, package type, and automotive compliance certifications are identical. No circuit modifications are required.

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

A: The primary difference is product status. The RK73H1HTTC16R5D is marked "Not For New Designs," indicating it has been superseded. The RK73H1HTTCM16R5D is the active production equivalent from the same manufacturer and series. Both parts are functionally and mechanically identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the RK73H1HTTC16R5D and RK73H1HTTCM16R5D carry AEC-Q200 automotive qualification and are rated for the same operating temperature range (-55°C ~ 155°C). Both are moisture-resistant thick film resistors with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Do these parts have the same physical dimensions?

A: Yes. Both parts are packaged in 0201 (0603 Metric) format with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). They are mechanically interchangeable on PCBs designed for 0201 package resistors.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical EAR99 export classification and HTSUS codes. Compliance profiles are identical.

Q: Which part should be specified for new designs?

A: The RK73H1HTTCM16R5D should be specified for new designs, as it carries "Active" product status. The RK73H1HTTC16R5D is not recommended for new designs per manufacturer designation.