B12J50R Equivalent & Substitute Parts

Part Overview

The B12J50R is a 50 Ohm, 12W axial wirewound resistor 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 high power dissipation in a compact axial package. The part is currently active in production with 980 units in stock. Substitute parts are identified when identical electrical and mechanical parameters are maintained across alternative part numbers or manufacturers, ensuring direct compatibility in circuit applications.

Substiute Parts

B12J50R

OhmiteIn Stock: 1084B12J50R Datasheet

Current PartRFQ

B12J50RE

OhmiteIn Stock: 916B12J50RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B12J50R is determined by strict equivalence across the following critical parameters:

• Resistance value: 50 Ohms
• Tolerance: ±5%
• Power rating: 12W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±260ppm/°C
• Physical dimensions: 0.313" Dia x 1.750" L
• Termination count: 2
• Safety features: Flame retardant coating

The B12J50RE meets all these criteria and is classified as a parametric equivalent. Both parts maintain identical electrical performance and mechanical compatibility, differing only in RoHS compliance status and REACH classification.

Parameter Comparison

Engineering Selection Recommendations

Both B12J50R and B12J50RE are active production components from Ohmite's Brown Devil® 200 series with identical electrical and mechanical specifications. Selection between these parts depends on regulatory compliance requirements:

The B12J50RE is ROHS3 compliant and REACH unaffected, making it suitable for applications subject to European Union environmental directives. The B12J50R is RoHS non-compliant and should be selected only for applications where RoHS compliance is not required or where legacy component specifications are mandated. Both parts are functionally interchangeable in circuit design and PCB layout.

Frequently Asked Questions (FAQ)

Q: Can B12J50RE be used as a direct replacement for B12J50R?

A: Yes. Both parts are electrically and mechanically identical, with matching resistance values, power ratings, temperature coefficients, and axial package dimensions. The primary difference is RoHS compliance status.

Q: What determines if a part qualifies as a substitute for B12J50R?

A: A substitute must maintain 50 Ohm resistance at ±5% tolerance, 12W power rating, wirewound composition, axial package configuration, ±260ppm/°C temperature coefficient, and 0.313" Dia x 1.750" L physical dimensions with 2 terminations and flame retardant safety features.

Q: Are there any performance differences between B12J50R and B12J50RE?

A: No. Both parts deliver identical electrical performance and thermal characteristics. Differences exist only in regulatory compliance certifications.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS or REACH regulations, B12J50RE is the appropriate selection. For applications without such requirements, either part is acceptable based on inventory availability and procurement timelines.

Q: Do these parts require any special handling or installation considerations?

A: Both parts are axial through-hole resistors with standard lead spacing and installation procedures. No special handling beyond standard component storage practices is required.