B8J4K0 Equivalent & Substitute Parts

Part Overview

The B8J4K0 is an 8W, 4 kOhms wirewound axial resistor manufactured by Ohmite, part of the Brown Devil® 200 series. This through-hole component features flame retardant coating and safety construction, designed for applications requiring high power dissipation with tight tolerance specifications. The part is currently active in production with 893 units in stock. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative certifications are required.

Substiute Parts

B8J4K0

OhmiteIn Stock: 965B8J4K0 Datasheet

Current PartRFQ

B8J4K0E

OhmiteIn Stock: 771B8J4K0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B8J4K0 is determined by strict equivalence across the following critical parameters:

• Resistance Value: 4 kOhms (exact match required)
• Tolerance: ±5% (exact match required)
• Power Rating: 8W (exact match required)
• Composition: Wirewound (exact match required)
• Package Type: Axial (exact match required)
• Physical Dimensions: 0.313" Dia x 1.000" L (exact match required)
• Temperature Coefficient: ±260ppm/°C (exact match required)
• Features: Flame Retardant Coating, Safety (exact match required)
• Terminations: 2 (exact match required)

The B8J4K0E qualifies as a direct substitute because it maintains identical electrical specifications, physical dimensions, and functional characteristics. The primary distinction is RoHS compliance status and series designation.

Parameter Comparison

Engineering Selection Recommendations

Both B8J4K0 and B8J4K0E are active production components manufactured by Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on regulatory and compliance requirements:

• B8J4K0: Select when RoHS non-compliant components are acceptable for the application or when legacy design specifications require this exact part number.
• B8J4K0E: Select when RoHS compliance is mandated by design requirements, customer specifications, or regional regulations. This part provides equivalent functionality with enhanced environmental compliance.

Both parts are suitable for direct pin-for-pin and form-factor replacement in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can B8J4K0E be used as a direct replacement for B8J4K0?

A: Yes. The B8J4K0E is electrically and mechanically equivalent to the B8J4K0. Both components have identical resistance (4 kOhms), tolerance (±5%), power rating (8W), physical dimensions (0.313" Dia x 1.000" L), and functional features. No circuit redesign is required for substitution.

Q: What is the primary difference between B8J4K0 and B8J4K0E?

A: The primary difference is RoHS compliance status. The B8J4K0E is RoHS compliant, while the B8J4K0 is RoHS non-compliant. Both parts are manufactured by Ohmite and share identical electrical and mechanical characteristics.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the B8J4K0 and B8J4K0E have identical axial package dimensions of 0.313" diameter by 1.000" length (7.94mm x 25.40mm). They are mechanically interchangeable in PCB layouts and through-hole applications.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Both parts have identical temperature coefficients of ±260ppm/°C and are rated for the same operating conditions. They are functionally equivalent for temperature-dependent applications within their specified operating range.

Q: Which part should be selected for new designs?

A: Selection depends on compliance requirements. For applications requiring RoHS compliance, specify B8J4K0E. For applications where RoHS compliance is not required, either part is acceptable based on availability and procurement preferences.