Equivalent & Substitute Parts for RK73H1HTTC3570F

Part Overview

The RK73H1HTTC3570F is a 357 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 package format. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC3570F carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support legacy system maintenance or production transitions.

Substiute Parts

RK73H1HTTC3570F

KOA Speer Electronics, Inc.In Stock: 891RK73H1HTTC3570F Datasheet

Current PartRFQ

RK73H1HTTCM3570F

KOA Speer Electronics, Inc.In Stock: 980RK73H1HTTCM3570F Datasheet

MFR RecommendedRFQ

AC0201FR-07357RL

YAGEOIn Stock: 883AC0201FR-07357RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC3570F are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 357 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical & Package Equivalence Criteria:

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

Compliance & Environmental Criteria:

• Automotive qualification: AEC-Q200
• Composition: Thick Film
• Moisture resistance: Required
• RoHS3 compliance
• MSL 1 rating

Substitute parts must match all of these parameters to ensure functional and mechanical interchangeability in the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM3570F (KOA Speer Electronics, Inc.): This part is the manufacturer-recommended upgrade from the RK73H1HTTC3570F. Both components are from the same manufacturer and share identical electrical specifications and package format. The RK73H1HTTCM3570F carries an "Active" product status, indicating ongoing manufacturing support and availability. This part is the preferred choice for direct replacement in existing designs or production transitions, as it maintains supply chain continuity with the original manufacturer.

AC0201FR-07357RL (YAGEO): This part provides cross-manufacturer equivalence with all critical electrical and mechanical parameters matching the original specification. The AC0201FR-07357RL is manufactured by YAGEO and maintains AEC-Q200 automotive qualification, moisture resistance, and RoHS3 compliance. This part is suitable for applications requiring multi-source component qualification or when KOA Speer supply is unavailable. The "Active" product status ensures long-term availability.

Both substitute parts are electrically and mechanically interchangeable with the RK73H1HTTC3570F and meet all automotive and environmental compliance requirements specified for the original component.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3570F be used as a direct replacement for RK73H1HTTC3570F?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., and share identical electrical specifications (357 Ohms ±1%, 0.05W), package format (0201), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The RK73H1HTTCM3570F is the active product line equivalent.

Q: What is the difference between RK73H1HTTC3570F and RK73H1HTTCM3570F?

A: The primary difference is product status. RK73H1HTTC3570F is marked "Not For New Designs," while RK73H1HTTCM3570F is "Active." The electrical and mechanical specifications are identical. The "M" designation in the part number indicates the active variant within the RK73H series.

Q: Can AC0201FR-07357RL replace RK73H1HTTC3570F in automotive applications?

A: Yes. AC0201FR-07357RL meets all substitution criteria: 357 Ohms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, moisture resistance, and RoHS3 compliance. This part is suitable for automotive circuit applications.

Q: Are there packaging differences between these substitute parts?

A: All three parts use the 0201 (0603 Metric) package format with identical physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). No PCB layout or assembly process modifications are required when substituting between these parts.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: All three parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture bake-out requirements. These components do not require special moisture control during storage or handling.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RK73H1HTTC3570F, RK73H1HTTCM3570F, and AC0201FR-07357RL are all ROHS3 compliant and suitable for applications subject to RoHS regulations.

Q: Which substitute part should be selected for new designs?

A: For new designs, either RK73H1HTTCM3570F (KOA Speer) or AC0201FR-07357RL (YAGEO) should be used, as both carry "Active" product status. The choice depends on supply chain strategy, preferred manufacturer, and availability requirements.