Equivalent & Substitute Parts for B8J50R

Part Overview

The B8J50R is an 8W wirewound axial resistor rated at 50 Ohms with ±5% tolerance, manufactured by Ohmite as part of the Brown Devil® 200 series. This through-hole component features flame retardant coating and safety construction, designed for applications requiring reliable power dissipation in axial package format. The part is currently active in production with 613 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

B8J50R

OhmiteIn Stock: 708B8J50R Datasheet

Current PartRFQ

B8J50RE

OhmiteIn Stock: 771B8J50RE Datasheet

DirectRFQ

B8J50RE

OhmiteIn Stock: 771B8J50RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the B8J50R is determined by strict equivalence across the following critical parameters:

• Resistance value: 50 Ohms
• Tolerance: ±5%
• Power rating: 8W
• Composition: Wirewound
• Package: Axial through-hole
• Physical dimensions: 0.313" Dia x 1.000" L (7.94mm x 25.40mm)
• Temperature coefficient: ±260ppm/°C
• Features: Flame retardant coating and safety construction

The B8J50RE meets all these criteria and is therefore a direct electrical and mechanical equivalent. Both parts share identical resistance, tolerance, power rating, composition, package format, and physical dimensions. The substitute part maintains the same thermal characteristics and safety features required for equivalent circuit performance.

Parameter Comparison

Engineering Selection Recommendations

Both the B8J50R and B8J50RE are active production parts from Ohmite with identical electrical and mechanical specifications. The primary distinction is regulatory compliance: the B8J50RE is RoHS Compliant, while the B8J50R is RoHS non-compliant. For applications subject to RoHS requirements, the B8J50RE is the appropriate selection. For applications without RoHS constraints, either part provides equivalent performance. The B8J50RE offers additional availability with 724 units in stock compared to 613 units of the B8J50R.

Frequently Asked Questions (FAQ)

Q: Can B8J50RE be used as a direct replacement for B8J50R?

A: Yes. Both parts are electrically and mechanically identical with 50 Ohms resistance, ±5% tolerance, 8W power rating, wirewound composition, and identical axial package dimensions. The B8J50RE is the preferred choice for RoHS-compliant applications.

Q: What are the key parameters that define substitution compatibility?

A: Substitution is based on matching resistance value (50 Ohms), tolerance (±5%), power rating (8W), composition (wirewound), package type (axial), physical dimensions (0.313" Dia x 1.000" L), and thermal characteristics (±260ppm/°C). All these parameters are identical between the main part and substitute.

Q: Are there any differences in package or footprint between these parts?

A: No. Both the B8J50R and B8J50RE share identical physical dimensions of 0.313" Dia x 1.000" L (7.94mm x 25.40mm) and use the same axial through-hole package format with 2 terminations.

Q: What is the significance of the RoHS compliance difference?

A: The B8J50RE is RoHS Compliant while the B8J50R is RoHS non-compliant. For applications or markets requiring RoHS compliance, the B8J50RE must be selected. For applications without RoHS requirements, both parts are functionally equivalent.

Q: Do these parts have the same thermal performance?

A: Yes. Both parts share an identical temperature coefficient of ±260ppm/°C, ensuring equivalent thermal stability and performance across operating temperature ranges.