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Nidec 1309X102 Trimmer Potentiometer - Equivalent & Substitute Parts
Part Overview
The Nidec Components Corporation 1309X102 is a 1 kOhm, 0.5W wirewound trimmer potentiometer with PC pin termination and side adjustment capability. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The 19-turn adjustment mechanism and through-hole mounting configuration define its primary application scope in legacy and current production environments.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 1 kOhms |
| Power Rating | 0.5W (1/2W) |
| Tolerance | ±10% |
| Temperature Coefficient | ±50ppm/°C |
| Number of Turns | 19 |
| Adjustment Type | Side Adjustment |
| Resistive Material | Wirewound |
| Mounting Type | Through Hole |
| Termination Style | PC Pins |
| Face Dimension | 0.382" x 0.217" (9.70mm x 5.50mm) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 1309X102 is determined by the following critical parameters:
Mandatory Matching Parameters:
- Resistance value: 1 kOhms
- Termination style: PC Pins
- Mounting type: Through Hole
- Adjustment type: Side Adjustment
- Resistive material: Wirewound
Allowable Variation Parameters:
- Power rating: Equal to or greater than 0.5W
- Tolerance: Equal to or tighter than ±10%
- Number of turns: May vary (affects adjustment resolution)
- Face dimensions: Minor variations acceptable within PCB layout constraints
- Temperature coefficient: Equal to or better than ±50ppm/°C
The Bourns 3290H-1-102 meets all mandatory matching criteria and exceeds performance specifications in power rating and tolerance, qualifying it as a direct substitute.
Parameter Comparison
| Parameter | Nidec 1309X102 | Bourns 3290H-1-102 | Compatibility |
|---|---|---|---|
| Resistance | 1 kOhms | 1 kOhms | Matched |
| Power Rating | 0.5W | 1W | Substitute exceeds requirement |
| Tolerance | ±10% | ±5% | Substitute is tighter |
| Temperature Coefficient | ±50ppm/°C | ±50ppm/°C | Matched |
| Number of Turns | 19 | 25 | Substitute provides finer adjustment resolution |
| Adjustment Type | Side Adjustment | Side Adjustment | Matched |
| Resistive Material | Wirewound | Wirewound | Matched |
| Mounting Type | Through Hole | Through Hole | Matched |
| Termination Style | PC Pins | PC Pins | Matched |
| Face Dimension | 0.382" x 0.217" (9.70mm x 5.50mm) | 0.375" x 0.150" (9.53mm x 3.81mm) | Substitute is slightly smaller |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Matched |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Matched |
Engineering Selection Recommendations
The Bourns 3290H-1-102 is qualified as a direct substitute for the obsolete Nidec 1309X102 based on the following factors:
Compliance and Certification: Both components maintain ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory alignment in production environments.
Performance Characteristics: The Bourns substitute provides equal or superior performance across all critical parameters. The increased power rating (1W versus 0.5W) and tighter tolerance (±5% versus ±10%) represent performance enhancements that do not compromise backward compatibility.
Product Status: The Bourns 3290H-1-102 carries active product status, ensuring continued availability and supply chain stability compared to the obsolete Nidec component.
Physical Compatibility: The substitute's slightly reduced face dimensions (0.375" x 0.150" versus 0.382" x 0.217") require PCB layout verification to confirm mounting hole alignment and clearance. The identical PC pin termination and through-hole mounting configuration support direct board-level replacement.
Frequently Asked Questions (FAQ)
Q: Can the Bourns 3290H-1-102 be used as a direct replacement without circuit modification?
A: Yes, provided PCB layout accommodates the slightly smaller face dimensions. The electrical parameters and termination style are fully compatible. Physical fit verification is required before production implementation.
Q: What is the significance of the increased number of turns (25 versus 19)?
A: The additional turns provide finer adjustment resolution. This represents an improvement in tuning precision and does not create compatibility issues. Adjustment range remains functionally equivalent.
Q: Does the higher power rating (1W versus 0.5W) affect circuit operation?
A: No. The higher power rating indicates the substitute can safely dissipate more power without thermal degradation. This is a performance enhancement that maintains backward compatibility.
Q: Are there any REACH or ECCN considerations for substitution?
A: Both components carry EAR99 classification. The Bourns component is REACH Affected, while the Nidec component shows Vendor Undefined status. Compliance verification with your supply chain and regulatory requirements is necessary.
Q: What packaging format is available for the Bourns substitute?
A: The Bourns 3290H-1-102 is supplied in Tube packaging, compared to the Nidec component's unspecified packaging format. Confirm packaging requirements for your procurement and assembly processes.
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