Nidec 1113T501 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The Nidec Components Corporation 1113T501 is a 500 Ohm wirewound trimmer potentiometer rated at 0.75W with PC pin termination and top adjustment capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The 1.0 turn adjustment mechanism and through-hole mounting configuration define its primary application scope in legacy electronic assemblies.

Substiute Parts

1113T501

Nidec Components CorporationIn Stock: 7671113T501 Datasheet

Current PartRFQ

3345P-1-501

Bourns Inc.In Stock: 8103345P-1-501 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1113T501 is based on the following critical parameters that must remain constant or compatible:

• Resistance Value: 500 Ohms (exact match required)
• Termination Style: PC Pins (mechanical and electrical compatibility)
• Mounting Type: Through Hole (PCB assembly compatibility)
• Adjustment Type: Top Adjustment (functional interface requirement)
• Resistive Material: Wirewound (performance characteristics)
• Number of Turns: 1 (adjustment resolution)
• Temperature Coefficient: ±50ppm/°C (thermal stability requirement)

The Bourns 3345P-1-501 qualifies as a substitute because it maintains all critical parameters. The primary differences—increased power rating (1W vs 0.75W), improved tolerance (±5% vs ±10%), reduced physical size, and active product status—represent enhancements that do not compromise compatibility in applications designed for the original component.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 3345P-1-501 is the qualified substitute for the obsolete Nidec 1113T501 based on functional equivalence and regulatory compliance. Both components maintain ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring compatibility with current manufacturing standards.

The Bourns component offers operational advantages through higher power dissipation capacity (1W vs 0.75W) and tighter tolerance specification (±5% vs ±10%), which provide design margin without introducing incompatibility. The smaller physical footprint (0.450" vs 0.531" diameter) may require PCB layout verification to confirm mechanical fit within existing mounting holes, though the through-hole PC pin configuration remains identical.

The active product status of the Bourns 3345P-1-501 ensures long-term availability and supply chain continuity, addressing the primary limitation of the obsolete Nidec component.

Frequently Asked Questions (FAQ)

Q: Can the Bourns 3345P-1-501 be used as a direct replacement for the Nidec 1113T501?

A: Yes, the Bourns 3345P-1-501 is functionally equivalent. Both components share identical resistance value, termination style, mounting type, adjustment mechanism, and temperature coefficient. Verification of physical fit within existing PCB mounting holes is required due to the reduced diameter of the Bourns component.

Q: What are the key differences between these two components?

A: The primary differences are power rating (1W vs 0.75W), tolerance specification (±5% vs ±10%), physical size (0.450" vs 0.531" diameter), and product status (active vs obsolete). These differences represent enhancements that do not compromise electrical or mechanical compatibility.

Q: Are both components RoHS compliant?

A: Yes, both the Nidec 1113T501 and Bourns 3345P-1-501 are ROHS3 compliant and carry unlimited moisture sensitivity ratings, meeting current regulatory requirements.

Q: Does the smaller size of the Bourns component affect performance?

A: No. The reduced physical diameter does not affect electrical performance. The wirewound resistive element, temperature coefficient, and adjustment characteristics remain equivalent. Physical fit within existing PCB mounting holes must be confirmed during integration.

Q: What is the significance of the tolerance difference?

A: The Bourns component offers ±5% tolerance compared to ±10% for the Nidec component. This represents improved initial accuracy and is beneficial for applications requiring tighter resistance specifications. It does not create incompatibility with designs specified for ±10% tolerance.