CRL0805-FW-R510ELF Equivalent & Substitute Parts

Part Overview

The CRL0805-FW-R510ELF is a 510 mOhms ±1% thick film chip resistor manufactured by Bourns Inc. in the 0805 (2012 Metric) package format. This component is rated for 0.25W (1/4W) power dissipation and operates across the temperature range of -55°C to 125°C. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this resistor category.

Substiute Parts

CRL0805-FW-R510ELF

Bourns Inc.In Stock: 1251CRL0805-FW-R510ELF Datasheet

Current PartRFQ

RL1220S-R51-F

SusumuIn Stock: 54233RL1220S-R51-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CRL0805-FW-R510ELF are qualified based on the following criteria:

Resistance value must match exactly at 510 mOhms with tolerance maintained at ±1%. Package format must be identical: 0805 (2012 Metric) with matching physical dimensions (0.079" L x 0.049" W). Operating temperature range must encompass or equal -55°C to 125°C. RoHS3 compliance and MSL 1 rating are required. Power rating may exceed the original specification provided the package dimensions and thermal characteristics remain compatible with the 0805 form factor. Temperature coefficient specifications must be within acceptable ranges for the resistor category.

Parameter Comparison

Engineering Selection Recommendations

The RL1220S-R51-F from Susumu qualifies as a direct substitute for the CRL0805-FW-R510ELF based on matching resistance value, tolerance, package dimensions, and operating temperature specifications. Both components maintain ROHS3 compliance and MSL 1 rating. The substitute part offers increased power dissipation capability (0.333W versus 0.25W) within the same 0805 package footprint, with a lower maximum seated height (0.020" versus 0.024"). Both parts are Active status products with unlimited availability. The composition difference (thin film versus thick film) and temperature coefficient variation are within acceptable parameters for this resistor category and do not preclude substitution based on the provided specifications.

Frequently Asked Questions (FAQ)

Q: Can the RL1220S-R51-F replace the CRL0805-FW-R510ELF in all applications?

A: Yes, based on the provided electrical and mechanical parameters. Both components share identical resistance (510 mOhms), tolerance (±1%), package format (0805), and operating temperature range (-55°C to 125°C). The substitute part's higher power rating (0.333W) and lower profile height are compatible with the original package specifications.

Q: What is the significance of the power rating difference?

A: The RL1220S-R51-F is rated for 0.333W compared to the CRL0805-FW-R510ELF at 0.25W. This higher rating provides additional thermal margin in applications where power dissipation approaches the original specification. The 0805 package dimensions remain identical, ensuring PCB layout compatibility.

Q: Are there differences in film composition between these parts?

A: The CRL0805-FW-R510ELF uses thick film construction while the RL1220S-R51-F uses thin film construction. Both compositions are suitable for the 510 mOhms resistance value and ±1% tolerance specification. The thin film construction in the substitute part supports the current sense feature designation.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the CRL0805-FW-R510ELF and RL1220S-R51-F are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both maintain Active product status with equivalent regulatory standing.

Q: What is the impact of the temperature coefficient difference?

A: The CRL0805-FW-R510ELF specifies ±200ppm/°C while the RL1220S-R51-F specifies 0/+200ppm/°C. Both specifications fall within acceptable ranges for this resistor category and do not affect substitution eligibility based on the provided parameters.