L100J50R Equivalent & Substitute Parts

Part Overview

The L100J50R is a 50 Ohms ±5% 100W wirewound chassis mount resistor manufactured by Ohmite, part of the 270 series. This component is designed for high-power applications requiring reliable thermal dissipation and mechanical stability. The part maintains active product status with 701 units in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the primary part number may face availability constraints or where alternative manufacturers' components meet identical electrical and mechanical specifications.

Substiute Parts

L100J50R

OhmiteIn Stock: 734L100J50R Datasheet

Current PartRFQ

L100J50RE

OhmiteIn Stock: 1012L100J50RE Datasheet

DirectRFQ

FVT10006E50R00JE

Vishay Huntington Electric Inc.In Stock: 959FVT10006E50R00JE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L100J50R are qualified based on strict electrical and mechanical parameter matching. The substitution criteria are:

• Resistance value: 50 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 100W (exact match required)
• Composition: Wirewound (exact match required)
• Temperature coefficient: ±260ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 350°C (exact match required)
• Housing type: Vitreous Enamel Coated (exact match required)
• Package / Case: Radial, Tubular (exact match required)
• Lead style: Solder Lugs (exact match required)
• Physical dimensions: Compatible within tolerance (0.750" to 0.752" diameter; 6.500" length)

Two substitute parts meet these criteria: L100J50RE (Ohmite, same manufacturer) and FVT10006E50R00JE (Vishay Huntington Electric Inc., alternative manufacturer). Both components satisfy all electrical and mechanical requirements for direct substitution in applications currently using the L100J50R.

Parameter Comparison

Engineering Selection Recommendations

All three parts—L100J50R, L100J50RE, and FVT10006E50R00JE—are active products with identical electrical specifications and compatible mechanical dimensions. Selection between these parts should be based on compliance requirements and inventory availability.

The L100J50R is RoHS non-compliant. Applications subject to RoHS3 regulations must use either L100J50RE or FVT10006E50R00JE, both of which carry ROHS3 Compliant certification.

For applications without RoHS compliance requirements, all three parts are electrically and mechanically interchangeable. The L100J50RE offers the advantage of being the same manufacturer (Ohmite) with higher inventory availability (998 units). The FVT10006E50R00JE provides an alternative from Vishay Huntington Electric Inc. with comparable inventory (940 units) and full RoHS3 compliance.

Physical dimensions are compatible across all three parts, with the FVT10006E50R00JE diameter specification at 0.750" versus 0.752" for the Ohmite parts—a difference of 0.002" that falls within standard mechanical tolerances for chassis mount applications.

Frequently Asked Questions (FAQ)

Q: Can L100J50RE be used as a direct replacement for L100J50R?

A: Yes. Both parts are manufactured by Ohmite with identical electrical specifications (50 Ohms ±5%, 100W, ±260ppm/°C, -55°C ~ 350°C operating range) and mechanical dimensions (0.752" Dia x 6.500" L). The primary difference is RoHS compliance status: L100J50RE is ROHS3 Compliant while L100J50R is RoHS non-compliant. For applications requiring RoHS3 certification, L100J50RE is the appropriate choice.

Q: Can FVT10006E50R00JE replace L100J50R in all applications?

A: Yes, from an electrical and mechanical standpoint. The FVT10006E50R00JE meets all electrical specifications and operates within the same temperature range. The diameter specification is 0.750" compared to 0.752" for the L100J50R—a 0.002" difference that is within standard mechanical tolerances for chassis mount resistor applications. The FVT10006E50R00JE is ROHS3 Compliant, making it suitable for regulated applications.

Q: What is the difference between the packaging specifications for these parts?

A: The L100J50R is specified with "-" packaging notation, while both L100J50RE and FVT10006E50R00JE are specified as Bulk packaging. All three parts use identical Radial, Tubular package / case configuration with Solder Lugs lead style. The packaging designation reflects inventory management classification and does not affect electrical or mechanical performance.

Q: Are there any dimensional compatibility concerns when substituting between these parts?

A: Dimensional compatibility is confirmed. The L100J50R and L100J50RE share identical dimensions (0.752" Dia x 6.500" L). The FVT10006E50R00JE has a diameter of 0.750", which is 0.002" smaller. This minor difference is within standard mechanical tolerances for chassis mount applications and does not affect mounting or thermal performance in standard bracket configurations.

Q: Which substitute part should be selected for new designs?

A: For new designs, L100J50RE or FVT10006E50R00JE are both appropriate choices, as both carry ROHS3 Compliant certification. Selection between these two should be based on manufacturer preference, supply chain strategy, and inventory availability. Both parts are active products with substantial inventory levels (998 and 940 units respectively).