RK73H1HTTC3573F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC3573F is a 357 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction. The part is currently in active production status with 1014 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and automotive compliance ratings are maintained across alternative manufacturers or product variants.

Substiute Parts

RK73H1HTTC3573F

KOA Speer Electronics, Inc.In Stock: 1047RK73H1HTTC3573F Datasheet

Current PartRFQ

RK73H1HTTCM3573F

KOA Speer Electronics, Inc.In Stock: 861RK73H1HTTCM3573F Datasheet

MFR RecommendedRFQ

AC0201FR-07357KL

YAGEOIn Stock: 1047AC0201FR-07357KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC3573F are qualified based on the following criteria:

Electrical Equivalence: Resistance value of 357 kOhms, tolerance of ±1%, and power rating of 0.05W (1/20W) must be identical.

Mechanical Compatibility: Package designation must be 0201 (0603 Metric) with matching physical dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm).

Environmental & Compliance Requirements: Operating temperature range of -55°C ~ 155°C, temperature coefficient of ±200ppm/°C, AEC-Q200 automotive qualification, moisture-resistant thick film composition, ROHS3 compliance, and MSL 1 rating must all be maintained.

Composition & Construction: Thick film construction with moisture-resistant properties is required for functional equivalence in automotive applications.

Substitutes are grouped into two categories: manufacturer-recommended variants from KOA Speer Electronics and direct cross-reference parts from alternative qualified manufacturers.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: RK73H1HTTC3573F remains the baseline reference part with the highest current inventory (1014 units) and explicit moisture-resistant specification. This part is recommended for new designs and applications requiring confirmed moisture-resistant thick film construction.

Manufacturer-Recommended Substitute: RK73H1HTTCM3573F is a KOA Speer Electronics variant suitable for applications where supply constraints on the primary part occur. This part maintains identical electrical and mechanical specifications, AEC-Q200 compliance, and ROHS3 status. Note that moisture-resistant properties are not explicitly specified for this variant; engineering review is required if moisture resistance is a critical design requirement.

Cross-Manufacturer Substitute: AC0201FR-07357KL from YAGEO provides full electrical and mechanical equivalence with explicit moisture-resistant specification matching the primary part. This part maintains all required automotive compliance certifications (AEC-Q200), ROHS3 compliance, and MSL 1 rating. Selection of this part is appropriate when KOA supply is unavailable and multi-source qualification is acceptable.

All three parts are currently in active production with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3573F be used as a direct replacement for RK73H1HTTC3573F?

A: RK73H1HTTCM3573F matches all electrical specifications (357 kOhms ±1%, 0.05W), mechanical dimensions (0201 package), temperature range (-55°C ~ 155°C), and automotive compliance (AEC-Q200). However, moisture-resistant properties are not explicitly specified for the M-variant. If moisture resistance is a design requirement, confirmation with KOA Speer Electronics is necessary before substitution.

Q: Is AC0201FR-07357KL from YAGEO fully compatible with RK73H1HTTC3573F?

A: Yes. AC0201FR-07357KL provides complete electrical equivalence (357 kOhms ±1%, 0.05W), identical mechanical dimensions (0201 package, 0.60mm x 0.30mm), matching temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and maintains AEC-Q200 automotive qualification with explicit moisture-resistant specification. RoHS3 and MSL 1 ratings are identical.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by: (1) Resistance value and tolerance (357 kOhms ±1%), (2) Power rating (0.05W / 1/20W), (3) Package type and physical dimensions (0201 / 0603 Metric), (4) Temperature coefficient (±200ppm/°C), (5) Operating temperature range (-55°C ~ 155°C), (6) Automotive compliance (AEC-Q200), (7) Composition (thick film), and (8) Regulatory compliance (ROHS3, MSL 1).

Q: Can these parts be used in non-automotive applications?

A: Yes. These parts exceed automotive qualification requirements and are suitable for industrial, consumer, and commercial applications within the specified operating temperature range and electrical ratings.

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

A: The 0201 package (0603 Metric) is a surface-mount chip resistor with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm). This is a standardized package size; all substitute parts must maintain identical physical dimensions for PCB layout compatibility and automated assembly processing.

Q: Are there differences in packaging format between these parts?

A: RK73H1HTTC3573F and AC0201FR-07357KL are supplied in Tape & Reel (TR) format. RK73H1HTTCM3573F packaging format is not specified in available data. Confirm packaging requirements with the supplier before procurement.