Equivalent & Substitute Parts for RK73H1HTTC1201F

Part Overview

The RK73H1HTTC1201F is a 1.2 kOhms ±1% thick film chip resistor in 0201 package (0603 metric) rated for 0.05W power dissipation. Manufactured by KOA Speer Electronics, Inc., this component is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 flexibility, and support legacy system maintenance.

Substiute Parts

RK73H1HTTC1201F

KOA Speer Electronics, Inc.In Stock: 88199RK73H1HTTC1201F Datasheet

Current PartRFQ

RK73H1HTTCM1201F

KOA Speer Electronics, Inc.In Stock: 1160RK73H1HTTCM1201F Datasheet

MFR RecommendedRFQ

AC0201FR-071K2L

YAGEOIn Stock: 103255AC0201FR-071K2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC1201F is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match exactly:

• Resistance Value: 1.2 kOhms (no tolerance band variation)
• Tolerance: ±1% (precision class)
• Power Rating: 0.05W / 1/20W (thermal capacity)
• Package: 0201 (0603 Metric) (physical form factor)
• Composition: Thick Film (material technology)
• Temperature Coefficient: ±200ppm/°C (temperature stability)
• Operating Temperature Range: -55°C ~ 155°C (environmental limits)
• Automotive Rating: AEC-Q200 (qualification standard)
• Moisture Resistance: Required (environmental protection)
• RoHS Compliance: ROHS3 Compliant (regulatory compliance)
• Moisture Sensitivity Level: MSL 1 (handling classification)

Substitute parts must satisfy all parameters listed above. Variations in product status (Active vs. Not For New Designs) do not affect electrical or mechanical compatibility but indicate manufacturing availability and design recommendation status.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM1201F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. This part maintains identical electrical and mechanical specifications while carrying Active product status, indicating current manufacturing support and design recommendation eligibility. Selection of this part ensures continuity with the original manufacturer's product line and provides access to current inventory and supply chain support.

AC0201FR-071K2L is a direct cross-reference substitute manufactured by YAGEO. This part satisfies all electrical and mechanical parameter requirements and carries Active product status. The AC series from YAGEO provides equivalent performance with AEC-Q200 automotive qualification and moisture-resistant thick film construction. Selection of this part provides an alternative supply source while maintaining full electrical and mechanical compatibility.

Both substitute parts are suitable for direct replacement in applications currently using RK73H1HTTC1201F. The choice between them depends on supply chain strategy, preferred supplier relationships, and inventory management objectives. All three parts meet identical compliance requirements including ROHS3, REACH Unaffected status, and automotive qualification standards.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1201F be used as a direct replacement for RK73H1HTTC1201F?

A: Yes. RK73H1HTTCM1201F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. All electrical parameters (1.2 kOhms ±1%, 0.05W, ±200ppm/°C), mechanical specifications (0201 package, 0.60mm x 0.30mm), and compliance certifications (AEC-Q200, ROHS3, MSL 1) are identical. The primary difference is product status: RK73H1HTTCM1201F is Active while the original is Not For New Designs.

Q: Can AC0201FR-071K2L be used as a direct replacement for RK73H1HTTC1201F?

A: Yes. AC0201FR-071K2L from YAGEO meets all electrical and mechanical requirements. Resistance (1.2 kOhms ±1%), power rating (0.05W), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), package dimensions (0201 / 0603 Metric), and compliance certifications (AEC-Q200, ROHS3, MSL 1) are fully equivalent. This part provides an alternative manufacturer source.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution requires exact matching of: resistance value (1.2 kOhms), tolerance (±1%), power rating (0.05W), package type (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), automotive rating (AEC-Q200), moisture resistance capability, and compliance status (ROHS3, MSL 1). Deviation in any parameter disqualifies a part from direct substitution.

Q: Are there differences in packaging between the substitute parts?

A: RK73H1HTTC1201F and AC0201FR-071K2L are both supplied in Tape & Reel (TR) packaging. RK73H1HTTCM1201F packaging information is not specified in available data. All three parts use identical 0201 (0603 Metric) package form factor with matching physical dimensions (0.024" L x 0.012" W, 0.60mm x 0.30mm) and height (0.010" / 0.26mm maximum seated height).

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

A: "Not For New Designs" indicates that KOA Speer Electronics, Inc. has superseded this part in their product line. While RK73H1HTTC1201F remains functionally equivalent and suitable for legacy system support and maintenance, new designs should utilize RK73H1HTTCM1201F (Active status from the same manufacturer) or AC0201FR-071K2L (Active status from alternative manufacturer) to ensure long-term supply chain support.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive qualification, indicating compliance with automotive industry reliability and performance standards. Operating temperature range (-55°C ~ 155°C) and moisture-resistant construction support automotive environmental requirements. ROHS3 compliance and MSL 1 rating satisfy automotive regulatory and handling requirements.

Q: What is the inventory status of these parts?

A: RK73H1HTTC1201F has 88,143 pieces in stock. RK73H1HTTCM1201F has 1,091 pieces in stock. AC0201FR-071K2L has 103,173 pieces in stock. Inventory levels reflect current availability but should be verified with suppliers for specific procurement timelines.