Equivalent & Substitute Parts for CSR0805FKR680

Part Overview

The CSR0805FKR680 is a 680 mOhms ±1% 0.25W thick film chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This current sense resistor is designed for precision measurement applications requiring low resistance values with tight tolerance. The part is active in production with 1122 units in stock. Equivalent and substitute parts are identified to support supply chain continuity, design flexibility, and application-specific requirements such as automotive qualification or enhanced temperature stability.

Substiute Parts

CSR0805FKR680

Stackpole Electronics IncIn Stock: 1156CSR0805FKR680 Datasheet

Current PartRFQ

RLP73K2AR68FTDF

TE Connectivity Passive ProductIn Stock: 4541RLP73K2AR68FTDF Datasheet

DirectRFQ

RCWE0805R680FKEA

Vishay DaleIn Stock: 3511RCWE0805R680FKEA Datasheet

UpgradeRFQ

RL0805FR-7W0R68L

YAGEOIn Stock: 2013RL0805FR-7W0R68L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following core parameters: resistance value (680 mOhms), tolerance (±1%), power rating (0.25W), package type (0805), composition (thick film), and current sense functionality. All identified substitutes meet these baseline requirements. Additional differentiation occurs through automotive qualification (AEC-Q200), temperature coefficient specifications, and maximum operating temperature limits. Parts are grouped by substitution type: direct equivalents maintain identical specifications, upgrade substitutes add automotive qualification and enhanced environmental performance, and manufacturer-recommended substitutes provide cross-manufacturer compatibility with specified feature enhancements.

Parameter Comparison

Engineering Selection Recommendations

RLP73K2AR68FTDF (TE Connectivity) serves as a direct functional equivalent with identical electrical and thermal specifications. This part is suitable for applications where the original CSR0805FKR680 is unavailable and automotive qualification is not required.

RCWE0805R680FKEA (Vishay Dale) is an upgrade substitute offering AEC-Q200 automotive qualification and improved temperature coefficient (±100ppm/°C versus ±200ppm/°C). This part is appropriate for automotive applications, industrial environments requiring enhanced reliability, or designs where tighter temperature stability is specified.

RL0805FR-7W0R68L (YAGEO) is a manufacturer-recommended substitute with AEC-Q200 automotive qualification and moisture-resistant construction. The maximum operating temperature is limited to 125°C compared to 155°C for the primary part. This part is suitable for automotive applications where the reduced upper temperature limit does not conflict with system requirements.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and current sense functionality. Selection should be based on application environment (automotive versus industrial), temperature operating range requirements, and supply availability.

Frequently Asked Questions (FAQ)

Q: Can RLP73K2AR68FTDF replace CSR0805FKR680 in all applications?

A: RLP73K2AR68FTDF is electrically and mechanically equivalent to CSR0805FKR680. Both parts share identical resistance, tolerance, power rating, package, and operating temperature range. Substitution is valid for non-automotive applications. For automotive designs, RCWE0805R680FKEA or RL0805FR-7W0R68L are preferred due to AEC-Q200 qualification.

Q: What is the difference between the Vishay Dale and YAGEO substitutes?

A: RCWE0805R680FKEA (Vishay Dale) offers a superior temperature coefficient of ±100ppm/°C and supports the full operating temperature range to 155°C. RL0805FR-7W0R68L (YAGEO) maintains ±200ppm/°C temperature coefficient with a maximum operating temperature of 125°C. Both are AEC-Q200 qualified. Selection depends on temperature stability requirements and maximum operating temperature constraints.

Q: Are all substitute parts in the same 0805 package?

A: All parts are specified as 0805 (2012 Metric) package. Physical dimensions are nearly identical with minor variations: CSR0805FKR680 and RL0805FR-7W0R68L measure 0.079" L x 0.049" W, while RCWE0805R680FKEA measures 0.079" L x 0.051" W. Height differences are negligible (0.024" to 0.026" seated maximum). All parts are PCB-compatible within standard 0805 footprints.

Q: Which substitute should I use for a new automotive design?

A: Both RCWE0805R680FKEA and RL0805FR-7W0R68L carry AEC-Q200 automotive qualification. RCWE0805R680FKEA is recommended if the design operates above 125°C or requires tighter temperature coefficient control (±100ppm/°C). RL0805FR-7W0R68L is suitable if maximum operating temperature does not exceed 125°C.

Q: Are all parts RoHS compliant?

A: All parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and regulatory requirements for industrial and automotive applications.