Ohmite 45J2R2 Equivalent & Substitute Parts

Part Overview

The Ohmite 45J2R2 is a 2.2 Ohm, 5% tolerance, 5W through-hole resistor with axial wirewound construction from the Ohmicone® 40 series. This component is classified as Active product status and is currently in stock with 694 units available. The 45J2R2 is RoHS non-compliant, which may necessitate identification of compliant alternatives for applications requiring regulatory adherence or long-term supply chain stability.

Substiute Parts

45J2R2

OhmiteIn Stock: 70745J2R2 Datasheet

Current PartRFQ

45J2R2E

OhmiteIn Stock: 81945J2R2E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 45J2R2 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2.2 Ohms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±50ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Number of terminations: 2

The substitute part 45J2R2E meets all electrical and mechanical specifications of the main part. The primary distinction between these parts is packaging format and RoHS compliance status, which affects supply chain considerations and regulatory requirements rather than functional performance.

Parameter Comparison

Engineering Selection Recommendations

Both the 45J2R2 and 45J2R2E are Active status components from Ohmite's Ohmicone® 40 series with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

45J2R2: Select this part number for applications where RoHS non-compliance is acceptable and standard packaging is preferred. Current inventory of 694 units supports immediate availability.

45J2R2E: Select this part number for applications requiring ROHS3 compliance or where bulk packaging is operationally advantageous. This variant provides regulatory alignment with ROHS3 standards and maintains higher inventory levels at 804 units.

Both parts carry identical ECCN (EAR99) and HTSUS (8533.21.0080) classifications, indicating equivalent export and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Are the 45J2R2 and 45J2R2E electrically identical?

A: Yes. Both parts have identical resistance (2.2 Ohms), tolerance (±5%), power rating (5W), temperature coefficient (±50ppm/°C), and wirewound composition. They are functionally equivalent in circuit applications.

Q: What is the difference between these part numbers?

A: The primary differences are packaging format (standard versus bulk) and RoHS compliance status. The 45J2R2E is ROHS3 compliant, while the 45J2R2 is RoHS non-compliant. Both maintain identical physical dimensions and electrical performance.

Q: Can I use 45J2R2E as a direct replacement for 45J2R2?

A: Yes. The 45J2R2E is a direct parametric equivalent with identical electrical specifications, power rating, physical dimensions, and axial package configuration. No circuit modifications are required.

Q: Does RoHS compliance affect performance?

A: No. RoHS compliance relates to material composition and regulatory requirements, not electrical or thermal performance. Both parts deliver identical functional characteristics.

Q: Which part should I specify for new designs?

A: Specify 45J2R2E for new designs requiring ROHS3 compliance. For legacy designs or applications without compliance requirements, either part is suitable based on availability and packaging preferences.