Ohmite 93J3R9 Equivalent & Substitute Parts

Part Overview

The Ohmite 93J3R9 is a 3.9 Ohm ±5% 3.25W through-hole wirewound resistor with axial leads and flame retardant coating. This component is classified as Active product status and is designed for applications requiring precision power dissipation in compact form factors. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series, enabling seamless integration into existing designs while accommodating inventory or compliance requirements.

Substiute Parts

93J3R9

OhmiteIn Stock: 93893J3R9 Datasheet

Current PartRFQ

93J3R9E

OhmiteIn Stock: 80393J3R9E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Ohmite 93J3R9 are identified based on strict electrical and mechanical parameter equivalence within the Ohmite 90 series. The substitution criteria are:

• Resistance value: 3.9 Ohms (exact match)
• Tolerance: ±5% (exact match)
• Power rating: 3.25W (exact match)
• Composition: Wirewound (exact match)
• Package type: Axial (exact match)
• Physical dimensions: 0.233" Dia x 0.579" L (exact match)
• Temperature coefficient: ±100ppm/°C (exact match)
• Features: Flame retardant coating and safety characteristics (exact match)
• Terminations: 2-pin axial configuration (exact match)

Parts meeting all these criteria are classified as parametric equivalents and may be substituted without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

The Ohmite 93J3R9E serves as a direct parametric equivalent to the 93J3R9 across all electrical and mechanical specifications. Selection between these parts should be based on regulatory and compliance requirements:

• The 93J3R9E is ROHS3 compliant, whereas the 93J3R9 is RoHS non-compliant. Applications subject to RoHS directives or customer specifications requiring RoHS compliance must use the 93J3R9E.
• Both parts maintain identical electrical performance, physical dimensions, and thermal characteristics, ensuring functional interchangeability in circuit applications.
• Packaging format differs (standard versus bulk), which may influence procurement and inventory management decisions but does not affect component performance.

Frequently Asked Questions (FAQ)

Q: Can the 93J3R9E replace the 93J3R9 in existing designs?

A: Yes. The 93J3R9E is a parametric equivalent with identical resistance, tolerance, power rating, physical dimensions, and thermal characteristics. Direct substitution is possible without circuit modification or board layout changes.

Q: What is the primary difference between these two parts?

A: The 93J3R9E is ROHS3 compliant while the 93J3R9 is RoHS non-compliant. Both parts are electrically and mechanically identical. The choice depends on regulatory requirements and customer specifications.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.233" Dia x 0.579" L (5.90mm x 14.70mm) and use the same axial package configuration, ensuring identical board layout compatibility.

Q: Do these parts have the same temperature coefficient?

A: Yes. Both parts have a temperature coefficient of ±100ppm/°C, providing equivalent thermal stability across operating conditions.

Q: What is the difference between standard and bulk packaging?

A: Packaging format affects procurement and storage but does not influence electrical or mechanical performance. Standard packaging is typical for individual orders, while bulk packaging is used for high-volume procurement.