93J18R Equivalent & Substitute Parts Reference

Part Overview

The 93J18R is an 18 Ohms ±5% 3.25W through-hole wirewound resistor manufactured by Ohmite, part of the 90 series. This axial-packaged component features flame retardant coating and safety construction, designed for applications requiring reliable power dissipation in through-hole configurations. The part is currently active in production with 806 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

93J18R

OhmiteIn Stock: 84593J18R Datasheet

Current PartRFQ

93J18RE

OhmiteIn Stock: 120593J18RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93J18R is determined by strict equivalence across the following critical parameters:

• Resistance value: 18 Ohms
• Tolerance: ±5%
• Power rating: 3.25W
• Composition: Wirewound
• Package type: Axial
• Temperature coefficient: ±30ppm/°C
• Features: Flame retardant coating and safety construction
• Physical dimensions: 0.232"–0.233" Dia x 0.579" L
• Termination count: 2

The 93J18RE meets all electrical and mechanical requirements for direct substitution. Packaging format differences (Box vs. Bulk) do not affect functional equivalence and reflect only distribution and inventory considerations.

Parameter Comparison

Engineering Selection Recommendations

Both the 93J18R and 93J18RE are active production parts from Ohmite's 90 series and are electrically and mechanically equivalent. Selection between these parts should be based on the following criteria:

• RoHS Compliance Requirements: The 93J18RE is ROHS3 compliant, while the 93J18R is RoHS non-compliant. Applications subject to RoHS directives or customer specifications requiring RoHS compliance must use the 93J18RE.
• Packaging Format: The 93J18R is supplied in Box packaging; the 93J18RE is supplied in Bulk packaging. Procurement and inventory management practices may influence selection based on quantity requirements and storage protocols.
• Inventory Availability: The 93J18RE has higher current stock (1112 units) compared to the 93J18R (806 units), which may impact lead time and supply chain planning.

Frequently Asked Questions (FAQ)

Q: Can the 93J18RE be used as a direct replacement for the 93J18R in all applications?

A: Yes, the 93J18RE is electrically and mechanically equivalent to the 93J18R. Both parts have identical resistance, tolerance, power rating, temperature coefficient, and physical dimensions. The primary difference is RoHS compliance status. If your application or customer requirements do not mandate RoHS compliance, either part is functionally interchangeable.

Q: What is the significance of the RoHS compliance difference between these parts?

A: The 93J18RE is ROHS3 compliant, while the 93J18R is RoHS non-compliant. RoHS (Restriction of Hazardous Substances) compliance is a regulatory requirement in many markets, particularly the European Union. If your design, manufacturing process, or end-use application is subject to RoHS directives, the 93J18RE must be selected.

Q: Are there any dimensional differences between the 93J18R and 93J18RE?

A: Dimensional differences are negligible. The 93J18R measures 0.232" diameter; the 93J18RE measures 0.233" diameter. Both are 0.579" in length. These minor variations (0.001" difference in diameter) fall within standard manufacturing tolerances and do not affect PCB layout, footprint compatibility, or mechanical fit in standard through-hole applications.

Q: Does packaging format (Box vs. Bulk) affect component performance?

A: No. Packaging format reflects only distribution and inventory management. The electrical and mechanical properties of the resistor are identical regardless of whether it is supplied in Box or Bulk packaging. Selection should be based on procurement quantity and internal inventory protocols.

Q: What certifications and standards apply to these parts?

A: Both parts are classified under ECCN EAR99 and HTSUS 8533.21.0080. Both have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints. The 93J18RE carries ROHS3 compliance certification; the 93J18R does not.