Equivalent & Substitute Parts for B5J4R7

Part Overview

The B5J4R7 is a 4.7 Ohm, 5.25W wirewound axial resistor manufactured by Ohmite as part of the Brown Devil® 200 series. This component is designed for through-hole applications requiring flame retardant coating and safety features in high-power dissipation circuits. The part is currently in active production status with 642 units in stock. Substitute parts are identified when packaging configurations or compliance requirements differ while maintaining identical electrical and mechanical specifications.

Substiute Parts

B5J4R7

OhmiteIn Stock: 699B5J4R7 Datasheet

Current PartRFQ

B5J4R7E

OhmiteIn Stock: 759B5J4R7E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B5J4R7 is determined by the following critical parameters:

• Resistance value: 4.7 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 5.25W (exact match required)
• Composition: Wirewound (exact match required)
• Package type: Axial (exact match required)
• Physical dimensions: 0.250" Dia x 0.625" L (exact match required)
• Temperature coefficient: ±400ppm/°C (exact match required)
• Features: Flame retardant coating and safety characteristics (exact match required)

The B5J4R7E qualifies as a parametric equivalent substitute. Both parts share identical electrical specifications, mechanical dimensions, and functional characteristics. The primary distinction is packaging configuration (tape and reel versus bulk) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Selection between B5J4R7 and B5J4R7E depends on regulatory and procurement requirements:

The B5J4R7 is suitable for applications where RoHS non-compliant components are acceptable or where standard packaging is required for automated assembly processes.

The B5J4R7E is the appropriate choice for designs requiring ROHS3 compliance or for applications utilizing bulk component procurement. Both parts deliver identical electrical performance and mechanical fit within the specified circuit environment.

Frequently Asked Questions (FAQ)

Q: Are B5J4R7 and B5J4R7E electrically interchangeable?

A: Yes. Both parts have identical resistance (4.7 Ohms), tolerance (±5%), power rating (5.25W), temperature coefficient (±400ppm/°C), and composition (wirewound). They perform identically in circuit applications.

Q: What is the difference between B5J4R7 and B5J4R7E?

A: The primary differences are packaging configuration (standard versus bulk) and RoHS compliance status. B5J4R7E is ROHS3 compliant, while B5J4R7 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can B5J4R7E replace B5J4R7 in existing designs?

A: Yes, provided the circuit board layout and assembly process accommodate bulk packaging. The axial package dimensions (0.250" Dia x 0.625" L) are identical, ensuring mechanical compatibility.

Q: Does RoHS compliance affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts meet identical electrical specifications.

Q: Are there any thermal differences between these parts?

A: No. Both parts have identical temperature coefficient (±400ppm/°C) and power rating (5.25W). Thermal performance is equivalent.

Q: What packaging format should I specify for automated assembly?

A: Specify B5J4R7 for standard packaging or B5J4R7E for bulk packaging, depending on your assembly equipment capabilities and procurement preferences.