Ohmite 45J2K5 Equivalent & Substitute Parts

Part Overview

The Ohmite 45J2K5 is a 2.5 kOhms ±5% 5W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production and maintains 1102 pieces in new original stock inventory. The part is classified as RoHS non-compliant. Substitute parts are identified to address inventory availability, packaging preferences, or compliance requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

45J2K5

OhmiteIn Stock: 115945J2K5 Datasheet

Current PartRFQ

45J2K5E

OhmiteIn Stock: 87145J2K5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 45J2K5 is determined by strict equivalence across the following parameters: resistance value (2.5 kOhms), tolerance (±5%), power rating (5W), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), and physical dimensions (0.343" Dia x 0.937" L). The identified substitute part 45J2K5E maintains all electrical and mechanical specifications identical to the main part. Packaging configuration and RoHS compliance status are secondary differentiators that do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 45J2K5 and 45J2K5E are functionally equivalent for circuit applications requiring a 2.5 kOhms 5W axial wirewound resistor. Selection between these parts should be based on compliance requirements and packaging needs. The 45J2K5E offers ROHS3 compliance, making it suitable for applications subject to RoHS regulations. The 45J2K5 remains available for applications without RoHS compliance mandates. Packaging differences (standard versus bulk) may influence procurement decisions based on order quantity and inventory management practices. Both parts maintain identical electrical performance and physical form factor.

Frequently Asked Questions (FAQ)

Q: Can 45J2K5E be used as a direct replacement for 45J2K5? A: Yes. The 45J2K5E maintains identical resistance value, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. Functional interchangeability is confirmed across all electrical and mechanical parameters.

Q: What is the difference between 45J2K5 and 45J2K5E? A: The primary differences are packaging configuration (standard versus bulk) and RoHS compliance status. The 45J2K5E is ROHS3 compliant, while the 45J2K5 is RoHS non-compliant. All electrical specifications and physical dimensions are identical.

Q: Does RoHS compliance affect circuit performance? A: RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical electrical characteristics in circuit applications.

Q: Are there inventory considerations when selecting between these parts? A: The 45J2K5 has 1102 pieces in stock, while the 45J2K5E has 786 pieces available. Inventory levels may influence procurement timing and lead time planning.

Q: Can these parts be used interchangeably in PCB assembly? A: Yes. Identical axial package dimensions and termination configuration ensure mechanical and electrical interchangeability in PCB layouts and assembly processes.