Equivalent & Substitute Parts for RK73H1HTTC6801D

Part Overview

The RK73H1HTTC6801D is a 6.8 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 with AEC-Q200 qualification and moisture-resistant construction. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product status where applicable.

Substiute Parts

RK73H1HTTC6801D

KOA Speer Electronics, Inc.In Stock: 823RK73H1HTTC6801D Datasheet

Current PartRFQ

RK73H1HTTCM6801D

KOA Speer Electronics, Inc.In Stock: 788RK73H1HTTCM6801D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC6801D is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Resistance value: 6.8 kOhms
• Tolerance: ±0.5% (substitutes must not exceed this tolerance)
• Power rating: 0.05W minimum
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C minimum

Mechanical Parameters (Non-Negotiable):

• Package: 0201 (0603 Metric)
• Physical dimensions: 0.024" L × 0.012" W (0.60mm × 0.30mm)
• Height seated maximum: 0.010" (0.26mm)
• Two terminations

Compliance & Environmental Parameters:

• Automotive AEC-Q200 rating (required for automotive applications)
• Thick film composition
• Moisture resistant construction
• RoHS3 compliance
• MSL 1 rating

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

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM6801D

The RK73H1HTTCM6801D is the direct equivalent substitute for RK73H1HTTC6801D. All electrical, mechanical, and compliance parameters are identical. The key distinction is product status: RK73H1HTTCM6801D is classified as "Active," whereas the original part is "Not For New Designs."

Selection Basis:

1. Electrical Equivalence: Both parts deliver identical resistance (6.8 kOhms), tolerance (±0.5%), power rating (0.05W), and temperature coefficient (±200ppm/°C). Circuit performance is functionally equivalent.

2. Mechanical Compatibility: Package, dimensions, and termination configuration are identical. Direct PCB footprint compatibility is confirmed.

3. Compliance & Certification: Both parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. Regulatory and environmental requirements are met.

4. Supply Chain Continuity: RK73H1HTTCM6801D is the manufacturer-recommended successor. Transitioning to this part ensures long-term availability and design continuity.

5. Moisture Resistance: Both parts feature moisture-resistant thick film construction, maintaining environmental protection in automotive applications.

For new designs and ongoing production, RK73H1HTTCM6801D is the appropriate selection. For legacy designs currently using RK73H1HTTC6801D, direct substitution is electrically and mechanically valid.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM6801D be used as a direct replacement for RK73H1HTTC6801D in existing designs?

A: Yes. All electrical parameters (resistance, tolerance, power rating, temperature coefficient), mechanical dimensions, and compliance certifications are identical. Direct substitution is valid for both new and existing designs.

Q: What is the difference between RK73H1HTTC6801D and RK73H1HTTCM6801D?

A: The parts are electrically and mechanically equivalent. The primary difference is product status: RK73H1HTTC6801D is "Not For New Designs," while RK73H1HTTCM6801D is "Active." The suffix "M" in the part number indicates the active production variant.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 automotive qualification and are rated for -55°C to 155°C operating temperature. Both are moisture-resistant thick film resistors suitable for automotive environments.

Q: What is the significance of the 0201 package designation?

A: The 0201 package (0603 metric) is a surface-mount chip resistor measuring 0.024" × 0.012" (0.60mm × 0.30mm). This is a standard footprint; both substitute parts use identical dimensions and are directly compatible with existing PCB layouts.

Q: Does tolerance affect substitution eligibility?

A: Yes. Both parts maintain ±0.5% tolerance. Substitutes with wider tolerance (e.g., ±1%) would not be acceptable for applications requiring ±0.5% accuracy. Tolerance must match or be tighter than the original specification.

Q: What does "Not For New Designs" mean for RK73H1HTTC6801D?

A: This designation indicates the part has been superseded by the manufacturer. While existing inventory may be available, new designs should transition to the active equivalent (RK73H1HTTCM6801D) to ensure long-term supply availability and manufacturer support.

Q: Are there any handling or storage differences between these parts?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control is required during storage or handling. Standard component storage practices apply to both.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both parts are rated for continuous operation from -55°C to 155°C with a temperature coefficient of ±200ppm/°C. They perform identically across the full operating temperature range.