RK73H2ATTD34R8F Equivalent & Substitute Parts

Part Overview

The RK73H2ATTD34R8F is a 34.8 Ohms ±1% 0.25W (1/4W) chip resistor manufactured by KOA Speer Electronics, Inc. in the 0805 (2012 Metric) package format. This thick film automotive-grade resistor meets AEC-Q200 specifications and features moisture-resistant construction with a temperature coefficient of ±100ppm/°C and operating range of -55°C to 155°C. The product maintains Active status with ROHS3 compliance and MSL 1 rating for unlimited moisture sensitivity protection. Alternative models are identified to provide flexibility in supply chain management and application-specific requirements.

Substiute Parts

RK73H2ATTD34R8F

KOA Speer Electronics, Inc.In Stock: 3852RK73H2ATTD34R8F Datasheet

Current PartRFQ

CRCW080534R8FKEA

Vishay DaleIn Stock: 20198CRCW080534R8FKEA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between the RK73H2ATTD34R8F and CRCW080534R8FKEA is evaluated based on the following critical parameters: resistance value, tolerance, package format, composition type, automotive rating, temperature coefficient, and operating temperature range. Both components share identical resistance value (34.8 Ohms), tolerance (±1%), package format (0805 / 2012 Metric), composition (Thick Film), automotive compliance (AEC-Q200), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The primary distinction between these parts lies in the power rating: the main component is rated at 0.25W (1/4W), while the substitute is rated at 0.125W (1/8W). Both components maintain ROHS3 compliance and MSL 1 ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the RK73H2ATTD34R8F and CRCW080534R8FKEA maintain Active product status with full ROHS3 compliance and MSL 1 ratings. Selection between these components should be determined by application power dissipation requirements. The RK73H2ATTD34R8F, rated at 0.25W (1/4W), accommodates higher power dissipation scenarios, while the CRCW080534R8FKEA, rated at 0.125W (1/8W), is suitable for applications with lower power dissipation. Both components meet AEC-Q200 automotive specifications, operate across the identical temperature range of -55°C to 155°C, and maintain the same resistance value and tolerance. The choice between manufacturers—KOA Speer Electronics and Vishay Dale—may be influenced by supply availability, procurement lead times, and established supplier relationships within specific supply chains.

Frequently Asked Questions (FAQ)

Q: Can the CRCW080534R8FKEA directly replace the RK73H2ATTD34R8F in any circuit? A: Direct replacement depends on application power dissipation. The CRCW080534R8FKEA has a lower power rating (0.125W vs. 0.25W). If the application dissipates more than 0.125W at this resistance value, the substitute is not suitable. Both share identical resistance, tolerance, package, temperature range, and AEC-Q200 rating.

Q: Are there package compatibility issues between these 0805 components? A: Both components use the 0805 (2012 Metric) package format with identical footprint dimensions (0.079" L x 0.049" W). No PCB layout modifications are required for physical substitution. The height difference (0.024" maximum for RK73H2ATTD34R8F vs. 0.020" maximum for CRCW080534R8FKEA) does not impact assembly compatibility.

Q: Do both parts meet automotive specifications? A: Both components are rated AEC-Q200 automotive grade and operate across -55°C to 155°C. Both maintain ROHS3 compliance and MSL 1 ratings, suitable for automotive and industrial applications requiring moisture resistance and extended temperature operation.

Q: What is the primary technical limitation when using CRCW080534R8FKEA as a substitute? A: The CRCW080534R8FKEA power rating of 0.125W (1/8W) is the limiting factor. Applications requiring the full 0.25W capability of the RK73H2ATTD34R8F must use the original component. Calculate circuit power dissipation using P = I²R or P = V²/R to determine if the lower power rating is acceptable.