Equivalent & Substitute Parts for RK73H1HTTC1331F

Part Overview

The RK73H1HTTC1331F is a 1.33 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0.60mm x 0.30mm). This component meets automotive AEC-Q200 qualification and incorporates moisture-resistant construction suitable for harsh operating environments. The part is classified as "Not For New Designs," indicating it has been superseded. Identifying equivalent and substitute parts is necessary to support existing designs, manage inventory transitions, and ensure continued supply chain availability for production and maintenance applications.

Substiute Parts

RK73H1HTTC1331F

KOA Speer Electronics, Inc.In Stock: 11049RK73H1HTTC1331F Datasheet

Current PartRFQ

RK73H1HTTCM1331F

KOA Speer Electronics, Inc.In Stock: 936RK73H1HTTCM1331F Datasheet

MFR RecommendedRFQ

AC0201FR-071K33L

YAGEOIn Stock: 806AC0201FR-071K33L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC1331F is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Resistance value: 1.33 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• Moisture resistance: Present (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• MSL rating: 1 (Unlimited) (exact match required)

Substitute parts must satisfy all criteria listed above. Variations in manufacturer, series designation, or product status (Active vs. Not For New Designs) do not affect substitution eligibility when all electrical and mechanical parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM1331F (KOA Speer Electronics, Inc.): This part is the manufacturer-recommended successor within the KOA product line. It maintains identical electrical specifications and automotive AEC-Q200 qualification. The part carries Active product status, indicating ongoing manufacturing support and supply availability. Selection of this part is appropriate for designs requiring KOA-specific sourcing or existing supply chain relationships with KOA distributors. Note that moisture resistance is not explicitly specified in the provided data for this variant.

AC0201FR-071K33L (YAGEO): This part provides full electrical and mechanical equivalence with explicit moisture-resistant construction matching the original RK73H1HTTC1331F specification. YAGEO AC series components meet identical AEC-Q200 automotive qualification and RoHS3 compliance requirements. Active product status ensures continued availability. This part is suitable for applications requiring cross-manufacturer sourcing flexibility or YAGEO supply chain integration.

Both substitute parts satisfy all critical substitution criteria and support automotive applications requiring AEC-Q200 qualification and moisture resistance.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1331F be used as a direct replacement for RK73H1HTTC1331F?

A: Yes. Both parts share identical resistance (1.33 kOhms), tolerance (±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), AEC-Q200 rating, RoHS3 compliance, and MSL rating (1). The primary difference is product status: RK73H1HTTCM1331F is Active, while RK73H1HTTC1331F is Not For New Designs.

Q: Is AC0201FR-071K33L electrically equivalent to RK73H1HTTC1331F?

A: Yes. AC0201FR-071K33L meets all electrical and mechanical specifications: 1.33 kOhms ±1%, 0.05W power rating, 0201 package, thick film composition, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, moisture resistance, RoHS3 compliance, and MSL 1 rating.

Q: What is the significance of the 0201 package designation?

A: The 0201 package (0603 Metric) specifies the physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). All substitute parts use this identical package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Why is moisture resistance important for this component?

A: Moisture resistance is a specified feature of the RK73H1HTTC1331F and is critical for automotive applications subject to humidity, condensation, and thermal cycling. Both recommended substitutes (RK73H1HTTCM1331F and AC0201FR-071K33L) maintain this specification, ensuring equivalent performance in harsh environmental conditions.

Q: Does AEC-Q200 qualification apply to all substitute parts?

A: Yes. All three parts—RK73H1HTTC1331F, RK73H1HTTCM1331F, and AC0201FR-071K33L—carry AEC-Q200 automotive qualification, confirming suitability for automotive applications and compliance with automotive reliability standards.

Q: Are there differences in supply availability between the substitute parts?

A: According to provided inventory data, RK73H1HTTCM1331F has 924 units in stock, while AC0201FR-071K33L has 791 units in stock. Availability may vary by distributor and time. Both parts carry Active product status, indicating ongoing manufacturing support.