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CSR1206FT27L0 Equivalent & Substitute Parts
Part Overview
The CSR1206FT27L0 is a 27 mOhms ±1% 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 maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when original inventory becomes unavailable or when supply chain optimization requires alternative sourcing from qualified manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 27 mOhms |
| Tolerance | ±1% |
| Power Rating | 0.5W (1/2W) |
| Package Type | 1206 (3216 Metric) |
| Composition | Thick Film |
| Application | Current Sense |
| Operating Temperature Range | -55°C to 155°C |
| Packaging Format | Tape & Reel (TR) |
Substitute Part Grouping Explanation
Substitution eligibility for the CSR1206FT27L0 is determined by strict equivalence across the following critical parameters:
- Resistance value: 27 mOhms (exact match required)
- Tolerance: ±1% (exact match required)
- Power rating: 0.5W minimum
- Package: 1206 (3216 Metric) form factor
- Composition: Thick film construction
- Application classification: Current sense
- Operating temperature range: -55°C to 155°C minimum coverage
- Termination count: 2 terminations
- Compliance: RoHS3 compliant, REACH unaffected
The RLP73M2BR027FTDF from TE Connectivity Passive Product meets all substitution criteria and is classified as a manufacturer-recommended equivalent.
Parameter Comparison
| Parameter | CSR1206FT27L0 (Stackpole) | RLP73M2BR027FTDF (TE Connectivity) |
|---|---|---|
| Resistance | 27 mOhms | 27 mOhms |
| Tolerance | ±1% | ±1% |
| Power Rating | 0.5W | 0.5W |
| Package | 1206 (3216 Metric) | 1206 (3216 Metric) |
| Composition | Thick Film | Thick Film |
| Application | Current Sense | Current Sense |
| Operating Temperature | -55°C to 155°C | -55°C to 155°C |
| Temperature Coefficient | ±100 ppm/°C | ±400 ppm/°C |
| Physical Dimensions (L × W) | 0.120" × 0.061" (3.05mm × 1.55mm) | 0.122" × 0.061" (3.10mm × 1.55mm) |
| Height - Seated (Max) | 0.026" (0.65mm) | 0.026" (0.65mm) |
| Terminations | 2 | 2 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Packaging Format | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
Both the CSR1206FT27L0 and RLP73M2BR027FTDF maintain Active product status and satisfy all regulatory requirements for industrial applications. Selection between these parts is based on availability and supply chain requirements rather than functional differences.
The CSR1206FT27L0 features a tighter temperature coefficient specification of ±100 ppm/°C compared to the RLP73M2BR027FTDF at ±400 ppm/°C. This difference is relevant only in applications requiring maximum thermal stability across the full -55°C to 155°C operating range.
Physical dimensions show a minor variation: the RLP73M2BR027FTDF length is 0.122" (3.10mm) versus 0.120" (3.05mm) for the CSR1206FT27L0. Both parts maintain identical height and width specifications, ensuring compatibility with standard 1206 footprints in PCB layouts.
Both parts carry identical compliance certifications: RoHS3 compliant, REACH unaffected, MSL Level 1 (unlimited), and EAR99 export classification.
Frequently Asked Questions (FAQ)
Q: Can RLP73M2BR027FTDF replace CSR1206FT27L0 in all applications?
A: Yes, for applications where the temperature coefficient specification of ±400 ppm/°C is acceptable. If the original design requires ±100 ppm/°C thermal stability, the CSR1206FT27L0 must be retained.
Q: Are there physical compatibility concerns with the dimensional difference?
A: No. The 0.002" (0.05mm) length difference falls within standard PCB 1206 footprint tolerances. Both parts are mechanically compatible with identical 1206 land patterns.
Q: Do both parts require identical reflow soldering profiles?
A: Both parts are thick film 1206 resistors with MSL Level 1 rating and identical height specifications. Standard 1206 reflow profiles apply to both.
Q: What is the basis for substitution eligibility?
A: Substitution is based on matching resistance value (27 mOhms), tolerance (±1%), power rating (0.5W), package type (1206), composition (thick film), application class (current sense), and operating temperature range (-55°C to 155°C).
Q: Are there supply chain advantages to using the RLP73M2BR027FTDF?
A: The RLP73M2BR027FTDF shows higher inventory availability (62,318 pcs) compared to CSR1206FT27L0 (1,141 pcs), which may provide supply chain flexibility for high-volume production.
Q: Do both parts carry the same regulatory certifications?
A: Yes. Both parts are RoHS3 compliant, REACH unaffected, carry MSL Level 1 rating, and are classified as EAR99 for export purposes.
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