Equivalent & Substitute Parts for Ohmite B8J125 Wirewound Resistor

Part Overview

The Ohmite B8J125 is an 8W axial wirewound resistor with 125 Ohms resistance and ±5% tolerance, designed for through-hole applications requiring high power dissipation and flame retardant characteristics. This component is classified as Active product status with 1,036 units currently in stock. Substitute parts are identified when packaging configurations differ, compliance certifications change, or inventory availability requires alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

B8J125

OhmiteIn Stock: 1088B8J125 Datasheet

Current PartRFQ

B8J125E

OhmiteIn Stock: 987B8J125E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The B8J125E is classified as a direct substitute for the B8J125 based on identical electrical and mechanical parameters: 125 Ohms resistance, ±5% tolerance, 8W power rating, wirewound composition, axial package configuration, and matching physical dimensions of 0.313" Dia x 1.000" L. The primary distinction between these parts is packaging format and RoHS compliance status. The B8J125E is supplied in Bulk packaging with ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), whereas the B8J125 is RoHS non-compliant with unspecified packaging. Both components maintain the Brown Devil® 200 series designation and identical thermal characteristics (±260ppm/°C temperature coefficient).

Parameter Comparison

Engineering Selection Recommendations

Selection between B8J125 and B8J125E is determined by regulatory and compliance requirements. The B8J125E is the appropriate choice for applications requiring ROHS3 compliance, as it meets current environmental and hazardous substance restrictions. Both components maintain Active product status and are suitable for immediate deployment. The B8J125 remains available for legacy systems or applications where RoHS compliance is not mandated. Inventory levels support both options, with B8J125 offering 1,036 units and B8J125E providing 914 units in current stock.

Frequently Asked Questions (FAQ)

Q: Are B8J125 and B8J125E electrically identical? A: Yes. Both components provide 125 Ohms resistance at ±5% tolerance with 8W power rating, wirewound construction, and ±260ppm/°C temperature coefficient. Electrical performance is equivalent.

Q: What is the primary difference between these parts? A: The B8J125E is ROHS3 compliant with Bulk packaging and Moisture Sensitivity Level 1 (Unlimited), while the B8J125 is RoHS non-compliant with unspecified packaging configuration.

Q: Can B8J125E replace B8J125 in existing designs? A: Yes. Identical physical dimensions (0.313" Dia x 1.000" L), axial package configuration, and electrical specifications ensure direct substitution in PCB layouts and circuit designs.

Q: Which part should be selected for new designs? A: B8J125E is recommended for new designs due to ROHS3 compliance, which aligns with current environmental regulations and supply chain requirements.

Q: Are there any moisture sensitivity considerations? A: B8J125E carries Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related storage or handling restrictions. The B8J125 lists MSL as Not Applicable.

Q: Do both parts maintain the Brown Devil® 200 series characteristics? A: Yes. Both components are part of the Brown Devil® 200 series and include flame retardant coating and safety features.