CSR1206JT43L0 Equivalent & Substitute Parts

Part Overview

The CSR1206JT43L0 is a 43 mOhms ±5% 0.5W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This current sense resistor is designed for precision current measurement applications in electronic circuits. The part is active and in stock, with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

CSR1206JT43L0

Stackpole Electronics IncIn Stock: 1111CSR1206JT43L0 Datasheet

Current PartRFQ

RLP73M2BR043FTDF

TE Connectivity Passive ProductIn Stock: 4721RLP73M2BR043FTDF Datasheet

MFR RecommendedRFQ

RLP73M2BR043JTD

TE Connectivity Passive ProductIn Stock: 4836RLP73M2BR043JTD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CSR1206JT43L0 are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 43 mOhms
• Power rating: 0.5W (1/2W)
• Package type: 1206 (3216 Metric)
• Composition: Thick Film
• Features: Current Sense
• Operating temperature range: -55°C to 155°C

Allowable Variations:

• Tolerance: ±5% or tighter (±1% acceptable)
• Temperature coefficient: May vary (±100ppm/°C to ±400ppm/°C)
• Manufacturer: Different manufacturers permitted
• Physical dimensions: Minor variations within package specification

Compliance Requirements:

• RoHS3 compliance maintained
• Moisture sensitivity level: 1 (Unlimited)

Two substitute parts meet these criteria: RLP73M2BR043FTDF (±1% tolerance) and RLP73M2BR043JTD (±5% tolerance), both from TE Connectivity Passive Product.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Tolerance): RLP73M2BR043JTD is the direct equivalent to CSR1206JT43L0, maintaining ±5% tolerance specification. Both parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. This substitute provides identical electrical performance for current sense applications.

Higher Precision Alternative: RLP73M2BR043FTDF offers ±1% tolerance, providing tighter resistance accuracy than the original specification. This part is suitable for applications requiring improved measurement precision. The tighter tolerance may benefit circuits with stringent current measurement requirements while maintaining all other electrical and mechanical compatibility.

Compliance Considerations: All three parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements. Physical dimensions are within acceptable tolerance for 1206 package footprints.

Frequently Asked Questions (FAQ)

Q: Can RLP73M2BR043FTDF replace CSR1206JT43L0 directly? A: Yes. RLP73M2BR043FTDF is electrically and mechanically compatible. The ±1% tolerance is tighter than the ±5% specification, making it suitable for direct substitution with improved accuracy.

Q: What is the difference between the two TE Connectivity substitutes? A: RLP73M2BR043JTD matches the ±5% tolerance of the original part. RLP73M2BR043FTDF provides ±1% tolerance for higher precision applications. Both are mechanically identical in the 1206 package.

Q: Are there physical dimension differences between the main part and substitutes? A: Minor length variations exist: CSR1206JT43L0 is 0.120" (3.05mm) while TE Connectivity parts are 0.122" (3.10mm). Both are within 1206 package specification and compatible with standard PCB footprints.

Q: Do the substitutes have different temperature coefficients? A: Yes. CSR1206JT43L0 has ±100ppm/°C while both TE Connectivity substitutes have ±400ppm/°C. For applications with wide temperature ranges or high precision requirements, verify temperature coefficient impact on circuit performance.

Q: Are all parts RoHS3 compliant? A: Yes. CSR1206JT43L0, RLP73M2BR043FTDF, and RLP73M2BR043JTD are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can these parts be used interchangeably in production? A: Yes, provided tolerance and temperature coefficient specifications are acceptable for the application. RLP73M2BR043JTD is the direct equivalent. RLP73M2BR043FTDF is suitable when tighter tolerance is beneficial.