Nidec 1309P501 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Nidec Components Corporation 1309P501 is a 500 Ohm, 0.5W wirewound trimmer potentiometer with PC pin termination and side adjustment capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The 19-turn adjustment mechanism and square form factor (9.50mm x 9.50mm) define its operational characteristics for precision resistance tuning applications.

Substiute Parts

1309P501

Nidec Components CorporationIn Stock: 6941309P501 Datasheet

Current PartRFQ

3290P-1-501

Bourns Inc.In Stock: 9363290P-1-501 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 3290P-1-501 qualifies as a functional substitute based on the following critical parameters:

Matching Parameters:

• Resistance value: 500 Ohms (identical)
• Temperature coefficient: ±50ppm/°C (identical)
• Adjustment type: Side Adjustment (identical)
• Resistive material: Wirewound (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pins (identical)
• RoHS compliance: ROHS3 Compliant (identical)

Allowable Variations:

• Power rating: 1309P501 rated at 0.5W; 3290P-1-501 rated at 1W (higher rating acceptable for same application)
• Tolerance: 1309P501 at ±10%; 3290P-1-501 at ±5% (tighter tolerance acceptable)
• Number of turns: 1309P501 has 19 turns; 3290P-1-501 has 25 turns (affects adjustment resolution)
• Form factor: 1309P501 is square (9.50mm x 9.50mm); 3290P-1-501 is rectangular (9.53mm x 3.81mm) (requires PCB layout verification)

Parameter Comparison

Engineering Selection Recommendations

The Bourns 3290P-1-501 is the designated substitute for the obsolete Nidec 1309P501. Both components maintain ROHS3 compliance and identical core electrical specifications (500 Ohms, ±50ppm/°C temperature coefficient, wirewound construction, side adjustment).

The 3290P-1-501 offers engineering advantages: active product status ensures long-term availability, 1W power rating provides increased thermal margin over the 0.5W original specification, and ±5% tolerance improves precision compared to ±10% tolerance of the original part.

Physical form factor differs (rectangular versus square); PCB layout modification may be required. The increased turn count (25 versus 19) provides finer adjustment resolution, which is operationally compatible with applications designed for the original 19-turn design.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 3290P-1-501 directly replace the Nidec 1309P501 without circuit modification?

A: Electrical substitution is valid. The 500 Ohm resistance, temperature coefficient, and adjustment mechanism are identical. Physical PCB layout must accommodate the rectangular form factor (9.53mm x 3.81mm) versus the original square form factor (9.50mm x 9.50mm).

Q: Does the higher power rating (1W versus 0.5W) affect circuit performance?

A: No. The 1W rating of the substitute part is a higher specification that does not degrade performance in applications designed for 0.5W operation. Thermal dissipation improves with the higher rating.

Q: What is the impact of the increased turn count (25 versus 19)?

A: The 25-turn design provides finer adjustment granularity. Applications requiring the original 19-turn resolution remain functionally compatible, as the additional turns only increase adjustment precision.

Q: Are both parts RoHS compliant?

A: Yes. Both the Nidec 1309P501 and Bourns 3290P-1-501 are ROHS3 compliant.

Q: Why is the Nidec 1309P501 classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The Bourns 3290P-1-501 is an active product with confirmed ongoing availability.