Ohmite R3J2K7 2.7kΩ 3W Radial Wirewound Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite R3J2K7 is a 2.7 kOhms ±5% 3W through-hole radial wirewound resistor with flame retardant coating and safety features. This component is classified as Active product status. Substitute parts are identified when original inventory becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when compliance certifications need to be updated to meet current regulatory standards.

Substiute Parts

R3J2K7

OhmiteIn Stock: 783R3J2K7 Datasheet

Current PartRFQ

R3J2K7E

OhmiteIn Stock: 806R3J2K7E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R3J2K7 is determined by strict equivalence across the following critical parameters:

• Resistance value: 2.7 kOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Radial lead
• Temperature coefficient: ±260ppm/°C
• Physical dimensions: 0.438" L x 0.313" W (11.13mm x 7.95mm)
• Height seated maximum: 0.469" (11.91mm)
• Termination count: 2
• Flame retardant coating and safety features

The R3J2K7E is classified as a parametric equivalent. Differences exist only in packaging format (Bulk versus standard packaging) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

The R3J2K7E serves as a direct parametric equivalent to the R3J2K7. Selection between these parts is determined by specific application requirements:

R3J2K7 is appropriate for applications where standard packaging is required and RoHS non-compliant components are acceptable.

R3J2K7E is appropriate for applications requiring ROHS3 compliance or bulk packaging formats. The upgrade to ROHS3 compliance represents the primary distinction and may be mandated by current regulatory requirements or customer specifications.

Both parts maintain identical electrical performance, physical dimensions, and thermal characteristics within the PC-58 series.

Frequently Asked Questions (FAQ)

Q: Can R3J2K7E replace R3J2K7 in existing designs? A: Yes. The R3J2K7E is a parametric equivalent with identical resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. The primary difference is ROHS3 compliance status and packaging format.

Q: What is the difference between standard and bulk packaging? A: Packaging format affects order quantities and handling procedures but does not alter component electrical or mechanical specifications. Bulk packaging is typically used for high-volume manufacturing processes.

Q: Does RoHS compliance affect component performance? A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both R3J2K7 and R3J2K7E deliver identical electrical characteristics.

Q: Are the physical dimensions identical between R3J2K7 and R3J2K7E? A: Yes. Both parts measure 0.438" L x 0.313" W (11.13mm x 7.95mm) with a maximum seated height of 0.469" (11.91mm). PCB layout and mechanical clearance requirements are identical.

Q: Can these parts be used interchangeably in production? A: Yes, provided that RoHS compliance requirements are met. If the application mandates ROHS3 compliance, R3J2K7E is required. If RoHS non-compliant components are acceptable, either part is suitable.

Q: What is the temperature coefficient significance? A: The ±260ppm/°C temperature coefficient indicates resistance value change per degree Celsius. Both parts share this specification, ensuring equivalent thermal performance across operating temperature ranges.