RK73H1HTTC1202D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC1202D is a 12 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 The part carries a "Not For New Designs" status, indicating it has been superseded in the manufacturer's product line.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 alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC1202D

KOA Speer Electronics, Inc.In Stock: 1694RK73H1HTTC1202D Datasheet

Current PartRFQ

RK73H1HTTCM1202D

KOA Speer Electronics, Inc.In Stock: 740RK73H1HTTCM1202D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC1202D is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters establish the substitution criteria:

Electrical Parameters (Non-Negotiable):

• Resistance value: 12 kOhms
• Tolerance: ±0.5%
• Power rating: 0.05W minimum
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C

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)
• Terminations: 2

Compliance & Certification (Non-Negotiable):

• Automotive AEC-Q200 rating
• ROHS3 compliance
• Thick film composition
• Moisture resistant construction

Substitute parts must match all parameters listed above. Deviations in any single parameter disqualify a part from substitution eligibility. The primary distinction between the main part and substitute alternatives is product status and specific feature sets (such as moisture resistance designation).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM1202D

The RK73H1HTTCM1202D is the direct equivalent substitute for the RK73H1HTTC1202D. Both components are manufactured by KOA Speer Electronics within the RK73H series and share identical electrical specifications, mechanical dimensions, and automotive compliance certifications.

Rationale for Substitution:

1. Product Status Transition: The main part (RK73H1HTTC1202D) carries "Not For New Designs" status, indicating end-of-life or product line consolidation. The substitute (RK73H1HTTCM1202D) maintains "Active" status, ensuring ongoing availability and manufacturer support.

2. Electrical Equivalence: All critical electrical parameters are identical: 12 kOhms resistance, ±0.5% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient, and -55°C to 155°C operating range.

3. Mechanical Compatibility: Both parts utilize the 0201 (0603 Metric) package with identical physical dimensions (0.024" L × 0.012" W, 0.60mm × 0.30mm) and maximum seated height (0.010" / 0.26mm). Direct PCB footprint compatibility is assured.

4. Automotive Compliance: Both components carry AEC-Q200 qualification, meeting automotive reliability and quality standards. ROHS3 compliance is maintained across both parts.

5. Regulatory Alignment: Both parts are ROHS3 compliant and REACH unaffected, satisfying current environmental and regulatory requirements.

Implementation Consideration:

The substitute part may be used as a direct replacement in existing designs without circuit modification or re-qualification, provided the application does not depend on specific moisture resistance features beyond standard thick film construction. Both parts are rated for MSL 1 (Unlimited), indicating no special moisture sensitivity handling requirements.

Frequently Asked Questions (FAQ)

Q1: Can RK73H1HTTCM1202D be used as a direct replacement for RK73H1HTTC1202D in existing designs?

A: Yes. The RK73H1HTTCM1202D is electrically and mechanically equivalent to the RK73H1HTTC1202D. All critical parameters—resistance value, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and automotive AEC-Q200 certification—are identical. Direct substitution is permissible without circuit redesign.

Q2: What is the difference between the main part and the substitute part?

A: The primary difference is product status. The RK73H1HTTC1202D is designated "Not For New Designs," indicating it has been superseded. The RK73H1HTTCM1202D maintains "Active" status and is the current production equivalent. The main part explicitly lists "Moisture Resistant" in its features, while the substitute lists only "Automotive AEC-Q200." Both are thick film resistors with inherent moisture resistance; the designation difference reflects product line documentation rather than functional capability.

Q3: Are the physical dimensions identical between both parts?

A: Yes. Both the RK73H1HTTC1202D and RK73H1HTTCM1202D are packaged in 0201 (0603 Metric) format with identical dimensions: 0.024" length × 0.012" width (0.60mm × 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are fully compatible.

Q4: Do both parts meet automotive standards?

A: Yes. Both components carry AEC-Q200 qualification, the automotive industry standard for discrete semiconductors and passive components. This certification ensures compliance with automotive reliability, quality, and performance requirements.

Q5: What is the moisture sensitivity level for these resistors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity. These components do not require special moisture-controlled storage or handling procedures and can be stored under standard industrial conditions.

Q6: Are both parts ROHS3 compliant?

A: Yes. Both the RK73H1HTTC1202D and RK73H1HTTCM1202D are ROHS3 compliant, meeting current environmental regulations for restricted substances in electrical and electronic equipment.

Q7: Why is the main part marked "Not For New Designs"?

A: "Not For New Designs" status indicates that the manufacturer has consolidated or updated its product line. The RK73H1HTTCM1202D represents the current active equivalent. For new designs and ongoing production, the substitute part should be specified to ensure long-term supply chain continuity and manufacturer support.

Q8: Can these resistors be used in high-temperature automotive applications?

A: Yes. Both parts are rated for operating temperatures from -55°C to 155°C, covering the full range of automotive environmental extremes. The ±200ppm/°C temperature coefficient ensures stable resistance performance across this temperature range.

Q9: What is the tolerance specification, and why does it matter?

A: Both parts are specified at ±0.5% tolerance, indicating high precision. This tolerance level is suitable for applications requiring accurate resistance values in signal conditioning, biasing, and measurement circuits. The tolerance applies across the full operating temperature range.

Q10: Are there any packaging differences between the main part and substitute?

A: The main part is specified as "Tape & Reel (TR)" packaging. The substitute part packaging is not specified in the provided data. Both components use the same 0201 package format. For procurement purposes, confirm packaging format (tape & reel, bulk, or tube) with the supplier based on production volume and assembly requirements.