RK73H1HTTC4022F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4022F is a 40.2 kOhms ±1% thick film chip resistor in 0201 package (0603 Metric) rated for 0.05W power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and meets AEC-Q200 automotive qualification standards with moisture-resistant construction.

The RK73H1HTTC4022F carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line.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 ensure design continuity, maintain supply chain reliability, and transition to active production components where applicable.

Substiute Parts

RK73H1HTTC4022F

KOA Speer Electronics, Inc.In Stock: 30944RK73H1HTTC4022F Datasheet

Current PartRFQ

RK73H1HTTCM4022F

KOA Speer Electronics, Inc.In Stock: 647RK73H1HTTCM4022F Datasheet

MFR RecommendedRFQ

AC0201FR-0740K2L

YAGEOIn Stock: 61187AC0201FR-0740K2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC4022F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 40.2 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture resistance: Required
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

All identified substitutes maintain identical electrical specifications and physical dimensions. Substitution is valid when all parameters listed above are matched. Differences in product status (Active vs. Not For New Designs) and packaging format (Tape & Reel designation) do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (Maintenance & Repair): The RK73H1HTTC4022F remains functionally valid for existing applications. Continued sourcing is supported by current inventory availability (30,886 pieces in stock).

For New Design Implementation: The RK73H1HTTCM4022F (KOA Speer Electronics, Inc.) is the manufacturer-recommended upgrade path. This part maintains identical electrical and mechanical specifications while carrying Active product status. It represents the direct evolution within the KOA Speer RK73H series.

For Cross-Manufacturer Sourcing: The AC0201FR-0740K2L (YAGEO) provides an alternative from a different manufacturer. This part meets all electrical and mechanical requirements, maintains AEC-Q200 automotive qualification, and carries Active product status. Cross-manufacturer substitution is valid when supply constraints or cost optimization require diversification.

Compliance Considerations: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. No additional compliance documentation is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4022F directly replace RK73H1HTTC4022F in existing designs?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc. and share identical electrical specifications (40.2 kOhms ±1%, 0.05W), physical dimensions (0201 package), temperature characteristics (±200ppm/°C, -55°C ~ 155°C), and automotive qualifications (AEC-Q200). The substitution is direct with no circuit modifications required.

Q: What is the difference between RK73H1HTTC4022F and RK73H1HTTCM4022F?

A: The primary difference is product status. RK73H1HTTC4022F is marked "Not For New Designs," while RK73H1HTTCM4022F is Active. Both parts are electrically and mechanically identical. The "M" designation in the part number indicates the updated production variant.

Q: Can YAGEO AC0201FR-0740K2L replace KOA parts in automotive applications?

A: Yes. The AC0201FR-0740K2L meets all required specifications including AEC-Q200 automotive qualification, identical resistance and tolerance values, matching power rating, and equivalent temperature performance. Cross-manufacturer substitution is valid for automotive applications when all electrical and mechanical parameters align.

Q: Are there any package or form factor differences between these parts?

A: No. All three parts use the 0201 package (0603 Metric) with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). Physical interchangeability is confirmed.

Q: What is the moisture sensitivity level, and does it affect substitution?

A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Storage and handling requirements are identical across all substitutes.

Q: Are there inventory or lead time considerations for substitution?

A: Current inventory levels differ: RK73H1HTTC4022F (30,886 pcs), RK73H1HTTCM4022F (627 pcs), and AC0201FR-0740K2L (61,174 pcs). Substitution selection may be influenced by supply availability and procurement timelines.