Equivalent & Substitute Parts for RK73H1HTTC5492F

Part Overview

The RK73H1HTTC5492F is a 54.9 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in 0201 package format with 0.05W power rating. This component is rated for automotive applications under AEC-Q200 standard and features moisture-resistant construction suitable for harsh operating environments.

The RK73H1HTTC5492F carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary to support existing designs, facilitate production continuity, and enable component sourcing from alternative inventory channels.

Substiute Parts

RK73H1HTTC5492F

KOA Speer Electronics, Inc.In Stock: 59859RK73H1HTTC5492F Datasheet

Current PartRFQ

RK73H1HTTCM5492F

KOA Speer Electronics, Inc.In Stock: 998RK73H1HTTCM5492F Datasheet

MFR RecommendedRFQ

AC0201FR-0754K9L

YAGEOIn Stock: 1154AC0201FR-0754K9L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC5492F are qualified based on strict electrical and mechanical parameter matching:

Electrical Parameters (Must Match Exactly):

• Resistance value: 54.9 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

• Package format: 0201 (0603 Metric)
• Composition: Thick Film
• Number of terminations: 2

Compliance & Certification (Must Match or Exceed):

• Automotive rating: AEC-Q200
• RoHS status: ROHS3 Compliant
• Moisture sensitivity: MSL 1 or better
• Moisture resistance: Required

Substitutes are grouped into two categories: MFR Recommended (same manufacturer, active status) and Direct Manufacturer (alternative manufacturer, active status).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM5492F

The RK73H1HTTCM5492F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. This part maintains identical electrical specifications and package format while carrying Active product status. Selection of this part ensures continuity within the same manufacturer's product line and simplifies qualification processes for existing designs. However, note that moisture resistance is not explicitly specified for this variant, requiring verification against application requirements.

Alternative Substitute: AC0201FR-0754K9L

The AC0201FR-0754K9L from YAGEO provides a cross-manufacturer substitute with full parameter equivalence, including explicit moisture-resistant construction. This part is suitable for applications requiring confirmed moisture resistance and offers an alternative sourcing channel. Both RoHS3 compliance and AEC-Q200 automotive rating are maintained.

Both substitute parts satisfy the electrical and mechanical requirements for direct replacement in circuits designed for the RK73H1HTTC5492F. Selection between them depends on supply chain strategy, manufacturer preference, and specific application moisture exposure requirements.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM5492F be used as a direct replacement for RK73H1HTTC5492F?

A: Yes. Both parts share identical resistance (54.9 kOhms), tolerance (±1%), power rating (0.05W), package format (0201), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive rating. The primary difference is product status: RK73H1HTTCM5492F is Active while RK73H1HTTC5492F is Not For New Designs. Moisture resistance specification differs between the two variants.

Q: What is the difference between RK73H1HTTC5492F and AC0201FR-0754K9L?

A: Both parts are electrically and mechanically equivalent with matching resistance, tolerance, power rating, package, and temperature specifications. The primary differences are manufacturer (KOA Speer vs. YAGEO) and explicit moisture-resistant designation on the YAGEO part. Both carry AEC-Q200 rating and ROHS3 compliance.

Q: Are all three parts interchangeable in automotive applications?

A: Yes, all three parts meet AEC-Q200 automotive qualification requirements and operate across the identical temperature range (-55°C ~ 155°C). They are electrically and mechanically interchangeable for automotive circuit applications.

Q: Why is moisture resistance important for this component?

A: The 0201 package format and thin-film construction make moisture resistance a critical parameter for reliability in high-humidity or condensation-prone environments. The RK73H1HTTC5492F and AC0201FR-0754K9L explicitly specify moisture-resistant construction, while RK73H1HTTCM5492F does not. Application environment determines whether this specification is mandatory.

Q: Can I mix these parts in the same production batch?

A: All three parts meet identical electrical and mechanical specifications, allowing mixed sourcing from multiple manufacturers and product variants. However, supply chain and quality documentation procedures should account for different manufacturers and part numbers in traceability records.

Q: What does "Not For New Designs" status mean for RK73H1HTTC5492F?

A: This designation indicates the part has been superseded by newer variants in the manufacturer's product line. While existing inventory remains available and the part continues to function within specification, new circuit designs should utilize Active-status alternatives such as RK73H1HTTCM5492F or AC0201FR-0754K9L to ensure long-term supply continuity and manufacturer support.