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WR06X8660FTL Equivalent & Substitute Parts
Part Overview
The WR06X8660FTL is a 866 Ohm ±1% thick film chip resistor manufactured by Walsin Technology Corporation, rated at 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without design modification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 866 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.1W (1/10W) |
| Composition | Thick Film |
| Package / Case | 0603 (1608 Metric) |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Number of Terminations | 2 |
Substitute Part Grouping Explanation
Substitution eligibility for the WR06X8660FTL is determined by strict equivalence across the following parameters:
Electrical Specifications:
- Resistance value: 866 Ohms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C ~ 155°C
Mechanical Specifications:
- Package type: 0603 (1608 Metric)
- Number of terminations: 2
- Physical dimensions: 0.063" L x 0.031" W (1.60mm x 0.80mm)
Compliance & Regulatory:
- RoHS3 compliance
- Moisture sensitivity level: 1 (Unlimited)
- REACH status: REACH Unaffected
- ECCN: EAR99
The substitute part CR168660F meets all electrical, mechanical, and compliance requirements for direct substitution.
Parameter Comparison
| Parameter | WR06X8660FTL (Walsin) | CR168660F (Meritek) | Match Status |
|---|---|---|---|
| Resistance | 866 Ohms | 866 Ohms | Equivalent |
| Tolerance | ±1% | ±1% | Equivalent |
| Power Rating | 0.1W (1/10W) | 0.1W (1/10W) | Equivalent |
| Composition | Thick Film | Thick Film | Equivalent |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | Equivalent |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | Equivalent |
| Package / Case | 0603 (1608 Metric) | 0603 (1608 Metric) | Equivalent |
| Size / Dimension | 0.063" L x 0.031" W (1.60mm x 0.80mm) | 0.063" L x 0.031" W (1.60mm x 0.80mm) | Equivalent |
| Height - Seated (Max) | 0.024" (0.60mm) | 0.022" (0.55mm) | Compatible |
| Number of Terminations | 2 | 2 | Equivalent |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Equivalent |
| REACH Status | REACH Unaffected | REACH Unaffected | Equivalent |
| ECCN | EAR99 | EAR99 | Equivalent |
| HTSUS | 8533.21.0030 | 8533.21.0030 | Equivalent |
Engineering Selection Recommendations
The CR168660F manufactured by Meritek is a direct equivalent substitute for the WR06X8660FTL. Both components share identical electrical specifications (866 Ohms ±1%, 0.1W power rating, ±100ppm/°C temperature coefficient) and mechanical compatibility (0603 package, 1.60mm x 0.80mm dimensions). Both components maintain Active product status and satisfy identical compliance requirements: RoHS3 compliance, MSL 1 (Unlimited) moisture sensitivity, REACH Unaffected status, and EAR99 export classification.
The seated height of the CR168660F (0.022" / 0.55mm) is 0.002" lower than the WR06X8660FTL (0.024" / 0.60mm), which presents no compatibility constraint for standard PCB assembly processes and remains within acceptable tolerance for 0603 package specifications.
Selection between these components should be based on availability, lead time, and supply chain requirements, as both components are functionally and mechanically interchangeable.
Frequently Asked Questions (FAQ)
Q: Can the CR168660F replace the WR06X8660FTL in existing designs?
A: Yes. The CR168660F is electrically and mechanically equivalent to the WR06X8660FTL across all specified parameters. Both components feature identical resistance (866 Ohms), tolerance (±1%), power rating (0.1W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Package dimensions and termination count are identical, enabling direct substitution without circuit redesign.
Q: Are there any physical differences between these components?
A: The CR168660F has a maximum seated height of 0.022" (0.55mm) compared to the WR06X8660FTL at 0.024" (0.60mm). This 0.002" difference is within standard 0603 package tolerances and does not affect PCB assembly compatibility or circuit performance.
Q: Do both components meet the same compliance standards?
A: Yes. Both the WR06X8660FTL and CR168660F are RoHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, maintain REACH Unaffected status, and share identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications.
Q: What determines substitution eligibility for 0603 chip resistors?
A: Substitution eligibility is determined by equivalence in resistance value, tolerance, power rating, temperature coefficient, operating temperature range, package type, physical dimensions, and compliance certifications. The WR06X8660FTL and CR168660F meet all these criteria for direct substitution.
Q: Can these components be used interchangeably in high-temperature applications?
A: Yes. Both components are rated for identical operating temperature ranges (-55°C ~ 155°C) and share the same temperature coefficient (±100ppm/°C), ensuring equivalent performance across the full specified temperature range.
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