RK73H1HTTC1400F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC1400F is a 140 Ohm ±1% 0.05W chip resistor in 0201 package (0603 Metric) manufactured by KOA Speer Electronics, Inc. This component features automotive AEC-Q200 qualification and moisture-resistant thick film construction, designed for high-reliability applications in automotive and industrial environments.

The main part carries a "Not For New Designs" product status, indicating it has been superseded. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support legacy system maintenance.

Substiute Parts

RK73H1HTTC1400F

KOA Speer Electronics, Inc.In Stock: 39247RK73H1HTTC1400F Datasheet

Current PartRFQ

RK73H1HTTCM1400F

KOA Speer Electronics, Inc.In Stock: 900RK73H1HTTCM1400F Datasheet

MFR RecommendedRFQ

AC0201FR-07140RL

YAGEOIn Stock: 1059AC0201FR-07140RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC1400F are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 140 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical & Compliance Criteria:

• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Automotive qualification: AEC-Q200
• Moisture resistance: Required
• RoHS3 compliance
• MSL 1 rating

Substitute parts must match all electrical parameters and maintain automotive-grade reliability standards. Package compatibility and environmental ratings are non-negotiable for direct substitution in automotive applications.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM1400F (MFR Recommended Substitute): This part is the manufacturer-recommended upgrade from KOA Speer Electronics, Inc. It maintains identical electrical specifications and automotive AEC-Q200 qualification. The primary advantage is active product status, ensuring long-term availability and supply chain stability. This part is the preferred choice for new designs and legacy system updates within the KOA product family.

AC0201FR-07140RL (Direct Cross-Reference): This YAGEO component provides full electrical and mechanical equivalence with the main part. It carries active product status and includes moisture-resistant construction with AEC-Q200 automotive qualification. This part is suitable for applications requiring multi-source qualification or when KOA supply is constrained. Both RoHS3 compliance and MSL 1 rating match the original specification.

Both substitute parts are ROHS3 compliant and carry MSL 1 ratings, confirming compatibility with standard manufacturing and storage conditions. Selection between the two substitutes should be based on supply availability, cost considerations, and existing qualification documentation within the design organization.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1400F directly replace RK73H1HTTC1400F in existing designs?

A: Yes. Both parts share identical electrical parameters (140 Ohms ±1%, 0.05W), package (0201), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The primary difference is product status; RK73H1HTTCM1400F is active while the original is not for new designs.

Q: Is AC0201FR-07140RL a suitable replacement for automotive applications?

A: Yes. AC0201FR-07140RL meets all electrical and mechanical requirements: 140 Ohms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, moisture resistance, RoHS3 compliance, and MSL 1 rating. It is manufactured by YAGEO and carries active product status.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the RK73H1HTTC1400F has been superseded and is no longer recommended for new circuit designs. However, it remains available for legacy system support and maintenance. Both substitute parts carry active status, making them suitable for new designs and ongoing production.

Q: Are there differences in moisture resistance between the substitute parts?

A: RK73H1HTTC1400F and AC0201FR-07140RL both explicitly specify moisture-resistant construction. RK73H1HTTCM1400F does not list moisture resistance in its specification. For applications requiring moisture resistance, AC0201FR-07140RL or the original RK73H1HTTC1400F are the specified choices.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All three parts share identical 0201 (0603 Metric) package dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). They are mechanically and electrically interchangeable in PCB layouts designed for 0201 chip resistors.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. All three parts are classified under ECCN EAR99 and HTSUS 8533.21.0030 for export and tariff purposes.