NB-PTCO-321 Equivalent & Substitute Parts

Part Overview

The NB-PTCO-321 is a surface-mount resistance temperature detector (RTD) sensor manufactured by TE Connectivity Measurement Specialties. This 1 kOhms RTD device operates across a temperature range of -50°C to 150°C with ±0.12% resistance tolerance and ±0.3°C accuracy. The component is packaged in 1206 (3216 Metric) form factor and is classified as Active product status with RoHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when design requirements permit alternative configurations.

Substiute Parts

NB-PTCO-321

TE Connectivity Measurement SpecialtiesIn Stock: 1124NB-PTCO-321 Datasheet

Current PartRFQ

32207638

Yageo NexensosIn Stock: 1143132207638 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NB-PTCO-321 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance @ 0°C: 1 kOhms
• Resistance Tolerance: ±0.12%
• Operating Temperature Range: -50°C ~ 150°C
• Accuracy: ±0.3°C
• Mounting Type: Surface Mount
• Product Status: Active

Allowable Variations:

• Package / Case: Alternative surface-mount packages (0603, 0805, etc.) are acceptable when board layout permits
• Current: Variations within the specified operating range are acceptable
• Manufacturer: Alternative qualified manufacturers are acceptable
• Packaging Format: Tape & Reel or alternative standard packaging formats are acceptable

The substitute part 32207638 (Yageo Nexensos) meets all mandatory matching parameters and maintains electrical equivalence despite differences in package size and current specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (NB-PTCO-321): The NB-PTCO-321 remains the preferred selection when the 1206 (3216 Metric) package footprint is required for board layout compatibility. This part maintains Active product status and RoHS3 compliance, ensuring long-term availability and regulatory conformance.

Substitute Part Selection (32207638): The Yageo Nexensos 32207638 is electrically equivalent and functionally interchangeable when the following conditions are met:

• Board layout accommodates the smaller 0603 (1608 Metric) package footprint
• Circuit design operates within the 300 µA current specification
• Platinum (Pt) RTD material is acceptable for the application
• RoHS compliance (standard) meets regulatory requirements

Both parts carry Active product status and maintain equivalent electrical performance across the specified operating temperature range. Selection between these parts is determined by physical package constraints and board design requirements rather than thermal or electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 32207638 substitute directly for the NB-PTCO-321 without circuit modifications?

A: Electrical substitution is direct when the 0603 package footprint is compatible with board layout. No circuit modifications are required. The 300 µA current specification of the substitute part is lower than the 500 µA of the main part, which is acceptable in most measurement circuits. Verify that your circuit design does not require the higher current specification.

Q: What is the primary difference between these two parts?

A: The primary difference is the package size. The NB-PTCO-321 uses a 1206 (3216 Metric) package, while the 32207638 uses a smaller 0603 (1608 Metric) package. Both parts maintain identical resistance, tolerance, accuracy, and operating temperature specifications.

Q: Are both parts RoHS compliant?

A: Yes. The NB-PTCO-321 is RoHS3 compliant, and the 32207638 is RoHS compliant. Both meet regulatory requirements for hazardous substance restrictions.

Q: What is the significance of the Platinum (Pt) material specification in the substitute part?

A: Platinum is the standard RTD sensing element material for precision temperature measurement. The specification in the 32207638 datasheet confirms the RTD material composition. This is a standard material for RTD sensors and does not affect substitution compatibility.

Q: Can I use the NB-PTCO-321 in place of the 32207638?

A: Yes, the NB-PTCO-321 can substitute for the 32207638 when the larger 1206 package footprint is acceptable. The higher 500 µA current specification of the main part is compatible with circuits designed for the 300 µA substitute part.

Q: What inventory status should I consider for procurement?

A: The NB-PTCO-321 has 1077 pieces in stock, while the 32207638 has 11349 pieces in stock. The substitute part offers significantly higher inventory availability for immediate procurement needs.