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CSR1206FTR250 Equivalent & Substitute Parts
Part Overview
The CSR1206FTR250 is a 250 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 tight tolerance and 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 identical electrical specifications, mechanical dimensions, and compliance certifications are maintained across alternative part numbers within the same manufacturer series.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 250 mOhms |
| Tolerance | ±1% |
| Power Rating | 0.5W (1/2W) |
| Package / Case | 1206 (3216 Metric) |
| Composition | Thick Film |
| Features | Current Sense |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the CSR1206FTR250 is determined by strict equivalence across the following critical parameters:
- Resistance value: 250 mOhms
- Tolerance: ±1%
- Power rating: 0.5W (1/2W)
- Package type: 1206 (3216 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C ~ 155°C
- Compliance certifications: RoHS3, REACH Unaffected
The CSR1206FKR250 qualifies as a direct substitute based on identical specifications across all electrical and mechanical parameters, identical manufacturer origin, and matching compliance status. Both parts belong to the CSR series and maintain equivalent performance characteristics for current sense applications.
Parameter Comparison
| Parameter | CSR1206FTR250 | CSR1206FKR250 | Match |
|---|---|---|---|
| Resistance | 250 mOhms | 250 mOhms | ✓ |
| Tolerance | ±1% | ±1% | ✓ |
| Power Rating | 0.5W (1/2W) | 0.5W (1/2W) | ✓ |
| Package / Case | 1206 (3216 Metric) | 1206 (3216 Metric) | ✓ |
| Composition | Thick Film | Thick Film | ✓ |
| Features | Current Sense | Current Sense | ✓ |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | ✓ |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | ✓ |
| Size / Dimension | 0.120" L x 0.061" W (3.05mm x 1.55mm) | 0.120" L x 0.061" W (3.05mm x 1.55mm) | ✓ |
| Height - Seated (Max) | 0.026" (0.65mm) | 0.026" (0.65mm) | ✓ |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ✓ |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | ✓ |
| REACH Status | REACH Unaffected | REACH Unaffected | ✓ |
Engineering Selection Recommendations
The CSR1206FKR250 is a direct equivalent to the CSR1206FTR250 with no functional or compliance differences. Both parts maintain Active product status and identical RoHS3 and REACH certifications. Selection between these part numbers may be based on inventory availability, lead time, or supply chain considerations, as electrical performance and mechanical compatibility are fully equivalent. The CSR1206FKR250 currently maintains higher inventory levels (146,288 pcs) compared to the CSR1206FTR250 (878 pcs), which may influence procurement decisions for high-volume applications.
Frequently Asked Questions (FAQ)
Q: Can CSR1206FKR250 be used as a direct replacement for CSR1206FTR250?
A: Yes. Both parts are electrically and mechanically identical with matching 250 mOhms ±1% resistance, 0.5W power rating, 1206 package dimensions, and operating temperature range of -55°C ~ 155°C. Compliance certifications are identical.
Q: Are there any differences in current sense performance between these parts?
A: No. Both parts share identical temperature coefficient (±100ppm/°C), composition (thick film), and current sense features. Performance in low-resistance measurement applications is equivalent.
Q: What determines substitution eligibility for this resistor?
A: Substitution requires matching resistance value (250 mOhms), tolerance (±1%), power rating (0.5W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance status (RoHS3, REACH Unaffected).
Q: Are the physical dimensions identical?
A: Yes. Both parts measure 0.120" L x 0.061" W (3.05mm x 1.55mm) with maximum seated height of 0.026" (0.65mm), ensuring identical PCB footprint compatibility.
Q: Do both parts have the same moisture sensitivity rating?
A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.
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