RK73H1HTTC1100F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC1100F is a 110 Ohms ±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 The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary for legacy system support, inventory management, and design continuity where this specific part number is specified or currently deployed.

Substiute Parts

RK73H1HTTC1100F

KOA Speer Electronics, Inc.In Stock: 31795RK73H1HTTC1100F Datasheet

Current PartRFQ

RK73H1HTTCM1100F

KOA Speer Electronics, Inc.In Stock: 950RK73H1HTTCM1100F Datasheet

MFR RecommendedRFQ

AC0201FR-07110RL

YAGEOIn Stock: 999AC0201FR-07110RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC1100F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 110 Ohms (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)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Parts meeting all these criteria are classified as direct electrical and mechanical equivalents. Substitutes are grouped into two categories: manufacturer-recommended alternatives from KOA Speer Electronics and cross-manufacturer equivalents from qualified suppliers.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM1100F (KOA Speer Electronics, Inc. - MFR Recommended): This part is the manufacturer-recommended successor to the RK73H1HTTC1100F. It maintains identical electrical specifications and package configuration while carrying Active product status. This substitute is appropriate for new procurement and design updates where KOA Speer components are specified. The part is ROHS3 compliant and carries MSL 1 rating. Note that moisture resistance is not explicitly specified for this variant, whereas the original part includes moisture-resistant construction.

AC0201FR-07110RL (YAGEO - Direct Equivalent): This YAGEO part provides a cross-manufacturer equivalent with full parameter alignment to the RK73H1HTTC1100F. It maintains all electrical characteristics, package dimensions, automotive AEC-Q200 qualification, and moisture-resistant thick film construction. The AC0201FR-07110RL carries Active product status and is ROHS3 compliant with MSL 1 rating. This substitute is suitable for applications requiring cross-manufacturer sourcing flexibility or where YAGEO components are preferred for supply chain diversification.

Both substitutes are electrically and mechanically interchangeable with the original part based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1100F be used as a direct replacement for RK73H1HTTC1100F? A: Yes. Both parts share identical resistance (110 Ohms), tolerance (±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), AEC-Q200 rating, RoHS compliance, and MSL rating. The primary difference is product status: RK73H1HTTCM1100F is Active while the original is Not For New Designs. Moisture resistance is specified for the original but not explicitly stated for the substitute.

Q: Is AC0201FR-07110RL compatible with designs using RK73H1HTTC1100F? A: Yes. The AC0201FR-07110RL meets all electrical and mechanical parameters of the original part, including 110 Ohms resistance, ±1% tolerance, 0.05W power rating, 0201 package, thick film composition, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 automotive qualification, moisture-resistant construction, ROHS3 compliance, and MSL 1 rating. It is a qualified cross-manufacturer equivalent.

Q: What are the key parameters that determine substitutability for this resistor? A: Substitutability is determined by exact matching of: resistance value (110 Ohms), tolerance (±1%), power rating (0.05W), package type (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), automotive qualification (AEC-Q200), RoHS compliance (ROHS3), and moisture sensitivity level (MSL 1). All substitute parts must match these parameters precisely.

Q: Why is the original RK73H1HTTC1100F marked "Not For New Designs"? A: This designation indicates the part has been superseded by the manufacturer. The RK73H1HTTCM1100F is the recommended active alternative. For new designs, the active substitute should be specified. The original part remains available for legacy system support and existing inventory applications.

Q: Are there differences in packaging between the main part and substitutes? A: All three parts use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). Packaging is fully compatible across all substitutes.

Q: What is the significance of MSL 1 rating for these resistors? A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture-related degradation. These parts do not require special moisture-control storage or handling procedures, making them suitable for standard warehouse and manufacturing environments.