262XR252B Equivalent & Substitute Parts

Part Overview

The 262XR252B is a 2.5 kOhm trimmer potentiometer manufactured by CTS Electrocomponents, designed for through-hole PC pin applications with side adjustment capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing production and maintenance applications. The original design utilizes carbon resistive material with 0.15W power rating and ±20% tolerance specifications typical of legacy trimmer potentiometer designs.

Substiute Parts

262XR252B

CTS ElectrocomponentsIn Stock: 1122262XR252B Datasheet

Current PartRFQ

3362W-1-252LF

Bourns Inc.In Stock: 8863362W-1-252LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 262XR252B is determined by the following critical parameters that must remain constant or be compatible with the original circuit design:

• Resistance Value: 2.5 kOhms (exact match required)
• Adjustment Type: Side Adjustment (mechanical interface requirement)
• Mounting Type: Through Hole (PCB layout compatibility)
• Termination Style: PC Pins (solder connection compatibility)
• Number of Turns: 1.0 Turn (adjustment range and resolution)

The 3362W-1-252LF from Bourns Inc. satisfies all critical substitution criteria. While this substitute features enhanced specifications including higher power rating (0.5W vs. 0.15W), improved tolerance (±10% vs. ±20%), and cermet resistive material instead of carbon, these upgrades provide superior performance characteristics without compromising circuit compatibility. The smaller physical footprint (0.275" x 0.260" vs. 0.370" x 0.394") requires PCB layout verification but does not affect electrical function.

Parameter Comparison

Engineering Selection Recommendations

The 3362W-1-252LF is the qualified substitute for the obsolete 262XR252B based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters match or exceed original specifications. The identical 2.5 kOhm resistance value, 1.0 turn adjustment range, and side adjustment mechanism ensure direct functional equivalence in circuit applications.

Product Status and Availability: The 262XR252B is obsolete with no ongoing manufacturing. The 3362W-1-252LF is an active product from Bourns Inc., ensuring long-term availability and supply chain continuity.

Compliance and Standards: The substitute meets ROHS3 compliance and REACH requirements, addressing modern regulatory standards that the original non-compliant part does not satisfy. This is particularly relevant for new designs or products requiring environmental certification.

Performance Enhancement: The substitute's higher power rating (0.5W), tighter tolerance (±10%), cermet resistive material, and specified temperature coefficient (±100ppm/°C) provide measurable improvements over the original carbon-based design without introducing compatibility issues.

Physical Considerations: The reduced footprint of the substitute requires verification that PCB layout accommodates the smaller dimensions. No electrical or functional compromise results from this size difference.

Frequently Asked Questions (FAQ)

Q: Can the 3362W-1-252LF directly replace the 262XR252B without circuit modification?

A: Yes. Both components share identical resistance value (2.5 kOhms), adjustment type (side adjustment), mounting method (through hole), and termination style (PC pins). No circuit modifications are required. PCB layout must accommodate the smaller physical footprint of the substitute.

Q: Why does the substitute have a higher power rating (0.5W vs. 0.15W)?

A: Higher power rating indicates the component can safely dissipate more power without thermal degradation. This upgrade does not affect circuit operation when the original 0.15W application is maintained. The substitute provides additional thermal margin and reliability.

Q: What is the significance of the tolerance difference (±10% vs. ±20%)?

A: The substitute's ±10% tolerance is tighter than the original ±20%, meaning the actual resistance value will be closer to the nominal 2.5 kOhm specification. This provides improved circuit accuracy and consistency across production batches.

Q: Does the change from carbon to cermet resistive material affect compatibility?

A: No. Cermet material is functionally equivalent to carbon in this application and provides superior stability, longer operational life, and better temperature performance. The change is a performance enhancement with no compatibility concerns.

Q: Is the smaller physical size of the substitute a concern?

A: The reduced dimensions (0.275" x 0.260" vs. 0.370" x 0.394") require PCB layout verification to ensure adequate clearance and mounting space. Electrical function is unaffected by the size difference.

Q: What is the impact of the temperature coefficient specification on the substitute?

A: The substitute specifies ±100ppm/°C temperature coefficient, indicating resistance value will vary slightly with temperature changes. The original part does not provide this specification. For applications requiring temperature stability, this data enables proper circuit design and compensation if needed.

Q: Are there any RoHS or environmental compliance differences?

A: Yes. The 262XR252B is RoHS non-compliant, while the 3362W-1-252LF meets ROHS3 compliance and is REACH affected. For products requiring environmental certification or compliance with modern regulations, the substitute is the appropriate choice.