CSR0805FTR300 Equivalent & Substitute Parts

Part Overview

The CSR0805FTR300 is a 300 mOhms ±1% thick film chip resistor in 0805 (2012 Metric) package rated for 0.25W (1/4W) power dissipation. Designed for current sense applications, this component is manufactured by Stackpole Electronics Inc and maintains Active product status. Alternative equivalent parts may be required due to inventory availability, supply chain considerations, or specific packaging preferences while maintaining identical electrical and mechanical specifications.

Substiute Parts

CSR0805FTR300

Stackpole Electronics IncIn Stock: 790CSR0805FTR300 Datasheet

Current PartRFQ

CSR0805FKR300

Stackpole Electronics IncIn Stock: 76303CSR0805FKR300 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR0805FTR300 is determined by strict equivalence across the following critical parameters:

Resistance value must be exactly 300 mOhms with ±1% tolerance. Power rating must be 0.25W (1/4W) minimum. Package must be 0805 (2012 Metric) to ensure PCB footprint compatibility. Composition must be thick film. Temperature coefficient must be ±200ppm/°C. Operating temperature range must span -55°C to 155°C. RoHS3 compliance and MSL 1 rating are required for regulatory and handling consistency.

The CSR0805FKR300 meets all substitution criteria as a direct equivalent from the same manufacturer series, differing only in packaging designation (Tape & Reel format variation) while maintaining identical electrical performance and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both CSR0805FTR300 and CSR0805FKR300 are Active status components from Stackpole Electronics Inc with full ROHS3 compliance and REACH unaffected designation. Selection between these parts is based on packaging and inventory requirements rather than electrical performance differences. The CSR0805FKR300 offers significantly higher inventory availability (76,210 pieces versus 703 pieces), making it the preferred choice for volume production or extended supply chain planning. Both parts carry identical electrical specifications, mechanical dimensions, and environmental ratings, ensuring direct functional interchangeability in current sense applications.

Frequently Asked Questions (FAQ)

Q: Can CSR0805FKR300 be used as a direct replacement for CSR0805FTR300?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, package dimensions, and operating specifications. The difference lies in packaging format designation only.

Q: What determines substitution eligibility for this 0805 current sense resistor?

A: Substitution requires exact matching of resistance value (300 mOhms), tolerance (±1%), power rating (0.25W), package type (0805 2012 Metric), composition (thick film), temperature coefficient (±200ppm/°C), and operating range (-55°C to 155°C). Regulatory compliance (ROHS3, MSL 1) must also align.

Q: Are there any PCB layout considerations when switching between these parts?

A: No. Both parts share identical 0805 (2012 Metric) package dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm) with 0.026" maximum seated height. PCB footprints are interchangeable without modification.

Q: What is the difference between CSR0805FTR300 and CSR0805FKR300 designations?

A: The designations reflect different packaging tape and reel configurations from Stackpole Electronics Inc. Electrical and mechanical specifications remain identical. Selection is based on supply chain availability and procurement requirements.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both parts operate across -55°C to 155°C with ±200ppm/°C temperature coefficient, meeting industrial and automotive temperature requirements for current sense circuits.