Equivalent & Substitute Parts for RK73H1HTTC6493F

Part Overview

The RK73H1HTTC6493F is a 649 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 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 classified as "Not For New Designs," making identification of equivalent and substitute components essential for ongoing production support, maintenance, and design continuity.

Substiute Parts

RK73H1HTTC6493F

KOA Speer Electronics, Inc.In Stock: 812RK73H1HTTC6493F Datasheet

Current PartRFQ

RK73H1HTTCM6493F

KOA Speer Electronics, Inc.In Stock: 1021RK73H1HTTCM6493F Datasheet

MFR RecommendedRFQ

AC0201FR-07649KL

YAGEOIn Stock: 703AC0201FR-07649KL Datasheet

DirectRFQ

ERJ-1GNF6493C

Panasonic Electronic ComponentsIn Stock: 52259ERJ-1GNF6493C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC6493F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 649 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Acceptable Variation Parameters:

• Manufacturer identity (different suppliers permitted)
• Operating temperature range (minimum -55°C required; maximum may vary)
• Automotive certification status (AEC-Q200 preferred but not mandatory for all substitutes)
• Product status (Active preferred over "Not For New Designs")

All identified substitute parts meet or exceed the mandatory parameter requirements, ensuring direct functional and mechanical compatibility without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Recommended for New Designs): RK73H1HTTCM6493F (KOA Speer Electronics, Inc.) is the preferred substitute. This part maintains identical electrical and mechanical specifications to the original RK73H1HTTC6493F while carrying Active product status, ensuring long-term availability and supply chain stability. Both components are from the same manufacturer and series (RK73H), minimizing qualification risk.

Secondary Substitute (Cross-Manufacturer Alternative): AC0201FR-07649KL (YAGEO) provides full electrical and mechanical equivalence with Active product status. This component includes moisture-resistant construction and AEC-Q200 automotive certification, matching the original part's environmental specifications. YAGEO is an established supplier with extensive automotive qualification history.

Tertiary Substitute (Extended Temperature Consideration): ERJ-1GNF6493C (Panasonic Electronic Components) meets all mandatory electrical parameters and maintains MSL 1 rating with ROHS3 compliance. The operating temperature range extends to -55°C but is limited to 125°C maximum, compared to 155°C for the primary part. This substitute is suitable for applications where the upper temperature limit does not exceed 125°C. Automotive certification is not specified for this component.

Selection Criteria:

• For applications requiring full -55°C to 155°C operating range: RK73H1HTTCM6493F or AC0201FR-07649KL
• For applications with temperature range limited to -55°C to 125°C: ERJ-1GNF6493C is acceptable
• For automotive applications with explicit AEC-Q200 requirement: RK73H1HTTCM6493F or AC0201FR-07649KL
• For moisture-sensitive environments: RK73H1HTTCM6493F or AC0201FR-07649KL (moisture-resistant specified)

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM6493F be used as a direct replacement for RK73H1HTTC6493F? A: Yes. Both components share identical electrical specifications (649 kOhms ±1%, 0.05W), mechanical package (0201), temperature coefficient (±200ppm/°C), and operating range (-55°C to 155°C). The primary difference is product status; RK73H1HTTCM6493F is Active, while the original is Not For New Designs. No circuit modification is required.

Q: What is the difference between RK73H1HTTC6493F and RK73H1HTTCM6493F? A: The primary difference is moisture resistance specification. RK73H1HTTC6493F explicitly includes moisture-resistant construction, while RK73H1HTTCM6493F does not specify this feature. Both maintain identical electrical performance and AEC-Q200 automotive qualification. For moisture-sensitive applications, verify environmental requirements before substitution.

Q: Is AC0201FR-07649KL suitable for automotive applications? A: Yes. AC0201FR-07649KL carries AEC-Q200 automotive qualification and includes moisture-resistant construction. All electrical parameters (649 kOhms ±1%, 0.05W, ±200ppm/°C) and operating temperature range (-55°C to 155°C) match the original specification. This component is suitable for automotive circuit applications.

Q: Can ERJ-1GNF6493C replace the original part in all applications? A: ERJ-1GNF6493C is suitable for applications where the maximum operating temperature does not exceed 125°C. The original part and primary substitutes support operation to 155°C. If your application requires the full -55°C to 155°C range, use RK73H1HTTCM6493F or AC0201FR-07649KL instead. Automotive certification is not specified for ERJ-1GNF6493C; verify compliance requirements for your application.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All identified substitute parts (RK73H1HTTCM6493F, AC0201FR-07649KL, and ERJ-1GNF6493C) are ROHS3 Compliant. MSL rating is 1 (Unlimited) for all components, indicating no moisture sensitivity restrictions during storage and handling.

Q: What is the significance of the 0201 package designation? A: The 0201 package (0603 Metric) is a surface-mount chip resistor measuring 0.024" L × 0.012" W (0.60mm × 0.30mm) with maximum seated height of 0.010" (0.26mm). All substitute parts use identical package dimensions and footprint, ensuring mechanical compatibility without PCB redesign. This is a standard automotive-grade package size.

Q: Which substitute offers the best long-term availability? A: RK73H1HTTCM6493F (KOA Speer Electronics, Inc.) is recommended for long-term availability. This component carries Active product status and is from the same manufacturer and series as the original part. Current inventory shows 925 pieces in stock. AC0201FR-07649KL (YAGEO) is also Active with 653 pieces available. ERJ-1GNF6493C (Panasonic) shows the highest inventory at 52,238 pieces.