CSR0805FT50L0 Equivalent & Substitute Parts

Part Overview

The CSR0805FT50L0 is a 50 mOhms ±1% thick film chip resistor in 0805 (2012 Metric) package rated for 0.25W (1/4W) power dissipation. Manufactured by Stackpole Electronics Inc., this current sense resistor is designed for precision low-resistance applications requiring tight tolerance and stable performance across industrial temperature ranges. The part is currently Active in product status with RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts become necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements necessitate alternative performance characteristics such as automotive qualification or enhanced power ratings.

Substiute Parts

CSR0805FT50L0

Stackpole Electronics IncIn Stock: 712CSR0805FT50L0 Datasheet

Current PartRFQ

CRM0805-FW-R050ELF

Bourns Inc.In Stock: 1632CRM0805-FW-R050ELF Datasheet

DirectRFQ

ERJ-L06KF50MV

Panasonic Electronic ComponentsIn Stock: 18285ERJ-L06KF50MV Datasheet

UpgradeRFQ

UCR10EVHFSR050

Rohm SemiconductorIn Stock: 7073UCR10EVHFSR050 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR0805FT50L0 is determined by the following mandatory parameters:

• Resistance value: 50 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Features: Current Sense (exact match required)
• Number of Terminations: 2 (exact match required)

Substitute parts are classified into two categories based on product status and performance enhancements:

Direct Substitute (Equivalent Status): CRM0805-FW-R050ELF maintains identical electrical and mechanical specifications to the main part. This part is suitable for direct replacement in existing designs, though it carries Obsolete product status.

Upgrade Substitutes (Enhanced Performance): ERJ-L06KF50MV and UCR10EVHFSR050 meet all core substitution parameters while offering additional automotive qualification (AEC-Q200) and improved temperature coefficients or power ratings. These parts are recommended for new designs or applications requiring automotive-grade reliability.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (Direct Replacement): CRM0805-FW-R050ELF provides electrical and mechanical equivalence to CSR0805FT50L0. However, this part carries Obsolete product status, which may present long-term supply risks. Use this substitute only when inventory of the primary part is unavailable and design modifications are not feasible.

For New Designs and Automotive Applications: ERJ-L06KF50MV is recommended as the primary upgrade path. This Panasonic part maintains Active product status, includes AEC-Q200 automotive qualification, and offers improved temperature coefficient performance (±100ppm/°C versus ±200ppm/°C). The operating temperature range is limited to -55°C ~ 125°C, which is acceptable for most industrial and automotive applications.

For Applications Requiring Enhanced Power Dissipation: UCR10EVHFSR050 from Rohm Semiconductor provides a higher power rating of 0.333W (1/3W) while maintaining all core electrical specifications. This part includes AEC-Q200 qualification and supports the full operating temperature range (-55°C ~ 155°C). However, it carries Not For New Designs status, making it suitable only for legacy design support or when the enhanced power rating is critical to application performance.

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can CRM0805-FW-R050ELF be used as a direct replacement for CSR0805FT50L0?

A: Yes. Both parts share identical resistance (50 mOhms), tolerance (±1%), power rating (0.25W), package (0805), and composition (thick film). The primary difference is product status: CRM0805-FW-R050ELF is Obsolete, which may affect future availability. Mechanical dimensions are nearly identical with negligible height variation (0.024" versus 0.026").

Q: What is the advantage of ERJ-L06KF50MV over the main part?

A: ERJ-L06KF50MV offers AEC-Q200 automotive qualification and superior temperature coefficient stability (±100ppm/°C versus ±200ppm/°C). It maintains Active product status, ensuring long-term supply continuity. The trade-off is a reduced operating temperature upper limit (125°C versus 155°C).

Q: When should UCR10EVHFSR050 be selected?

A: Select UCR10EVHFSR050 when the application requires higher power dissipation (0.333W versus 0.25W) or when the full operating temperature range (-55°C ~ 155°C) is mandatory. This part includes AEC-Q200 qualification but carries Not For New Designs status, limiting its use to legacy applications or specific performance requirements.

Q: Are all substitute parts compatible with the same PCB footprint?

A: All parts use the 0805 (2012 Metric) package with identical land pattern requirements. Mechanical dimensions are within acceptable tolerances for standard PCB assembly processes. Height variations (0.024" to 0.028") are negligible for typical surface-mount applications.

Q: Do all parts meet RoHS and environmental compliance requirements?

A: Yes. All parts listed—CSR0805FT50L0, CRM0805-FW-R050ELF, ERJ-L06KF50MV, and UCR10EVHFSR050—are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. All carry unlimited moisture sensitivity rating (MSL 1).