Equivalent & Substitute Parts for Ohmite 45J4K7

Part Overview

The Ohmite 45J4K7 is a 4.7 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 865 units in new original stock. The part is classified as RoHS non-compliant, which may necessitate identification of compliant alternatives for applications subject to RoHS regulations or procurement requirements.

Substiute Parts

45J4K7

OhmiteIn Stock: 92745J4K7 Datasheet

Current PartRFQ

45J4K7E

OhmiteIn Stock: 129145J4K7E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 45J4K7 is determined by strict equivalence across the following critical parameters:

• Resistance value: 4.7 kOhms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Termination count: 2

The identified substitute, 45J4K7E, maintains identical electrical and mechanical specifications while differing in packaging format (Bulk versus standard) and regulatory compliance status (RoHS3 Compliant versus RoHS non-compliant).

Parameter Comparison

Engineering Selection Recommendations

Selection between the 45J4K7 and 45J4K7E is determined by regulatory and compliance requirements:

The 45J4K7 remains suitable for applications without RoHS compliance mandates and where standard packaging is preferred. The part maintains active production status with adequate inventory availability.

The 45J4K7E is the appropriate selection for applications subject to RoHS3 compliance requirements. Both parts are electrically and mechanically identical, ensuring direct functional interchangeability. The 45J4K7E offers higher current inventory levels (1227 units versus 865 units), supporting extended procurement timelines.

Both components carry identical ECCN (EAR99) and HTSUS (8533.21.0080) classifications, with REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Are the 45J4K7 and 45J4K7E electrically interchangeable?

A: Yes. Both parts are identical in resistance value (4.7 kOhms), tolerance (±5%), power rating (5W), composition (wirewound), temperature coefficient (±20ppm/°C), and all other electrical specifications.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format (standard versus bulk) and RoHS compliance status. The 45J4K7E is RoHS3 compliant, while the 45J4K7 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can the 45J4K7E replace the 45J4K7 in existing designs?

A: Yes, provided that the bulk packaging format is compatible with your procurement and assembly processes. The physical dimensions, termination configuration, and all electrical parameters are identical.

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS3 compliance, specify the 45J4K7E. For applications without RoHS mandates, either part is acceptable based on packaging and inventory availability.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts share identical temperature coefficient (±20ppm/°C), power rating (5W), and thermal characteristics.