Equivalent & Substitute Parts for RK73H1HTTC1021D

Part Overview

The RK73H1HTTC1021D is a 1.02 kOhms ±0.5% chip resistor manufactured by KOA Speer Electronics, Inc., designed for 0.05W (1/20W) applications in 0201 (0603 Metric) package format. This component is rated for automotive applications under AEC-Q200 standard with moisture-resistant thick film construction.

The RK73H1HTTC1021D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identification of equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to actively supported components that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC1021D

KOA Speer Electronics, Inc.In Stock: 1031RK73H1HTTC1021D Datasheet

Current PartRFQ

RK73H1HTTCM1021D

KOA Speer Electronics, Inc.In Stock: 929RK73H1HTTCM1021D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC1021D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 1.02 kOhms
• Tolerance: ±0.5%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters:

• Package format: 0201 (0603 Metric)
• Number of terminations: 2
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Maximum seated height: 0.010" (0.26mm)

Compliance & Environmental Parameters:

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

Substitute parts must match all electrical specifications, maintain identical package dimensions, and retain all automotive and environmental certifications. The RK73H series designation indicates compatibility within the manufacturer's product family.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM1021D is the direct equivalent substitute for the RK73H1HTTC1021D. Both components are manufactured by KOA Speer Electronics, Inc., and belong to the RK73H series. The substitute part maintains complete electrical and mechanical equivalence across all specified parameters.

The primary distinction between the two parts is product status: the original RK73H1HTTC1021D is designated "Not For New Designs," while the RK73H1HTTCM1021D carries "Active" status. This indicates the substitute part represents the current production offering from the manufacturer for this specification.

Both parts satisfy identical compliance requirements:

• AEC-Q200 automotive qualification
• ROHS3 compliance
• REACH unaffected status
• Moisture Sensitivity Level 1 (Unlimited)

The RK73H1HTTCM1021D is suitable for direct replacement in existing designs and is the recommended selection for new applications requiring a 1.02 kOhms ±0.5% 0.05W 0201 package chip resistor with automotive-grade specifications.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM1021D be used as a direct replacement for the RK73H1HTTC1021D?

A: Yes. The RK73H1HTTCM1021D is electrically and mechanically identical to the RK73H1HTTC1021D. All electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical specifications (package dimensions, termination count, seated height) are equivalent. Both components carry identical AEC-Q200 automotive certification and RoHS3 compliance.

Q: What is the significance of the product status difference?

A: The RK73H1HTTC1021D is marked "Not For New Designs," indicating the manufacturer has transitioned this part to end-of-life status. The RK73H1HTTCM1021D carries "Active" status, meaning it is the current production equivalent. For new designs and long-term supply chain stability, the RK73H1HTTCM1021D is the appropriate selection.

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

A: Both parts use identical 0201 (0603 Metric) package format with the same physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). Both maintain Moisture Sensitivity Level 1 (Unlimited), requiring no special moisture control during storage or handling.

Q: Do both parts meet automotive specifications?

A: Yes. Both the RK73H1HTTC1021D and RK73H1HTTCM1021D are qualified to AEC-Q200 automotive standard and feature moisture-resistant thick film construction. Both are suitable for automotive applications across the full operating temperature range of -55°C to 155°C.

Q: What is the difference between the part numbers?

A: The part numbers differ only in the suffix: RK73H1HTTC1021D versus RK73H1HTTCM1021D. The "M" designation in the substitute part number indicates a manufacturing or product line update while maintaining complete electrical and mechanical equivalence. This is a standard practice in component manufacturer nomenclature.

Q: Can I use these parts interchangeably in PCB assembly?

A: Yes. The identical 0201 package format, footprint dimensions, and termination specifications ensure direct PCB assembly compatibility. No design modifications, layout changes, or assembly process adjustments are required when substituting between these parts.