CSR0603FK75L0 Equivalent & Substitute Parts

Part Overview

The CSR0603FK75L0 is a 75 mOhms ±1% thick film chip resistor in 0603 (1608 Metric) package rated for 0.125W (1/8W) power dissipation. This current sense resistor is designed for precision low-resistance applications requiring tight tolerance and stable performance across industrial temperature ranges. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this product category.

Substiute Parts

CSR0603FK75L0

Stackpole Electronics IncIn Stock: 932CSR0603FK75L0 Datasheet

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ERJ-L03UF75MV

Panasonic Electronic ComponentsIn Stock: 23395ERJ-L03UF75MV Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR0603FK75L0 is determined by the following critical parameters:

• Resistance value: 75 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package: 0603 (1608 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Features: Current Sense capability (required)
• Physical dimensions: 0.063" L x 0.031" W, Height 0.022" max (exact match required)
• Termination count: 2 (exact match required)
• RoHS compliance: ROHS3 (minimum requirement)

The ERJ-L03UF75MV meets all mandatory substitution criteria. While it features higher power rating (0.2W vs 0.125W), lower temperature coefficient (±200ppm/°C vs ±300ppm/°C), and automotive AEC-Q200 qualification, these represent performance enhancements that do not compromise compatibility in applications designed for the CSR0603FK75L0.

Parameter Comparison

Engineering Selection Recommendations

Both the CSR0603FK75L0 and ERJ-L03UF75MV are Active status components with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and environmental regulatory compliance.

The ERJ-L03UF75MV provides additional value through automotive AEC-Q200 qualification and enhanced thermal stability (±200ppm/°C vs ±300ppm/°C). The higher power rating (0.2W) offers design margin in current sense applications. However, the operating temperature upper limit is reduced to 125°C compared to 155°C for the CSR0603FK75L0.

Selection between these parts should be based on specific application requirements: the CSR0603FK75L0 for extended temperature range applications, or the ERJ-L03UF75MV for automotive-qualified designs requiring superior temperature coefficient performance.

Frequently Asked Questions (FAQ)

Q: Can ERJ-L03UF75MV replace CSR0603FK75L0 in existing designs?

A: Yes. Both parts share identical resistance (75 mOhms), tolerance (±1%), package (0603), composition (thick film), and physical dimensions. The ERJ-L03UF75MV's higher power rating and improved temperature coefficient do not create compatibility issues in circuits designed for the CSR0603FK75L0.

Q: What is the impact of different power ratings?

A: The CSR0603FK75L0 is rated 0.125W while the ERJ-L03UF75MV is rated 0.2W. The higher rating on the substitute provides additional thermal headroom. Applications operating within the 0.125W limit of the original part will operate safely with the substitute.

Q: Are there temperature range considerations?

A: The CSR0603FK75L0 operates from -55°C to 155°C, while the ERJ-L03UF75MV operates from -55°C to 125°C. Applications requiring operation above 125°C must use the CSR0603FK75L0. Applications within the 125°C upper limit can use either part.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard for discrete semiconductors and passive components. The ERJ-L03UF75MV carries this qualification, making it suitable for automotive applications. The CSR0603FK75L0 does not carry this designation.

Q: Are both parts RoHS compliant?

A: Yes. Both the CSR0603FK75L0 and ERJ-L03UF75MV are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), meeting modern environmental and reliability standards.

Q: What is the significance of temperature coefficient differences?

A: The ERJ-L03UF75MV has a lower temperature coefficient (±200ppm/°C) compared to the CSR0603FK75L0 (±300ppm/°C). This means the substitute maintains more stable resistance across temperature variations, beneficial for precision current sensing applications.