CSR1206FT43L0 Equivalent & Substitute Parts

Part Overview

The CSR1206FT43L0 is a 43 milliohm, ±1% tolerance, 0.5W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This current sense resistor is designed for precision low-resistance applications requiring stable performance across industrial temperature ranges. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

CSR1206FT43L0

Stackpole Electronics IncIn Stock: 765CSR1206FT43L0 Datasheet

Current PartRFQ

RLP73M2BR043FTDF

TE Connectivity Passive ProductIn Stock: 4721RLP73M2BR043FTDF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSR1206FT43L0 is determined by the following critical parameters:

• Resistance value: 43 mOhms
• Tolerance: ±1%
• Power rating: 0.5W minimum
• Package type: 1206 (3216 Metric)
• Composition: Thick film
• Application class: Current sense
• Operating temperature range: -55°C to 155°C minimum
• Compliance: ROHS3 and REACH requirements

The RLP73M2BR043FTDF from TE Connectivity Passive Product meets all mandatory electrical and mechanical specifications for direct substitution. Both parts share identical resistance, tolerance, power rating, package dimensions, and temperature operating range. Compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent across both components.

Parameter Comparison

Engineering Selection Recommendations

Both the CSR1206FT43L0 and RLP73M2BR043FTDF are active production components with equivalent ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and supply chain requirements rather than electrical performance differences. The RLP73M2BR043FTDF offers higher current inventory (4670 pcs vs 735 pcs), making it suitable for high-volume production scenarios. The CSR1206FT43L0 remains a valid choice where Stackpole Electronics supply chain preference exists. Both components satisfy identical mechanical fit requirements and thermal operating specifications for 1206 package applications.

Frequently Asked Questions (FAQ)

Q: Can RLP73M2BR043FTDF replace CSR1206FT43L0 in existing designs?

A: Yes. Both parts share identical resistance (43 mOhms), tolerance (±1%), power rating (0.5W), package type (1206), and operating temperature range (-55°C to 155°C). Mechanical dimensions are within acceptable tolerance for PCB footprint compatibility.

Q: What is the difference in temperature coefficient between these parts?

A: The CSR1206FT43L0 has a temperature coefficient of ±100 ppm/°C, while the RLP73M2BR043FTDF has ±400 ppm/°C. Both values remain within acceptable ranges for current sense applications across the specified operating temperature range.

Q: Are there dimensional differences that affect PCB layout?

A: Length differs slightly (3.05mm vs 3.10mm), but both parts conform to the 1206 (3216 Metric) package standard. Width and height are identical. Standard 1206 PCB footprints accommodate both components.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both CSR1206FT43L0 and RLP73M2BR043FTDF are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: Which part should be selected for new designs?

A: Selection depends on supply chain strategy and availability. Both parts are active production components with equivalent electrical and mechanical specifications. The RLP73M2BR043FTDF offers higher inventory availability.