B12J75R Equivalent & Substitute Parts

Part Overview

The B12J75R is a 75 Ohm, 12W axial wirewound 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 in a compact axial package. The part is currently active in production with 725 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

B12J75R

OhmiteIn Stock: 753B12J75R Datasheet

Current PartRFQ

B12J75RE

OhmiteIn Stock: 817B12J75RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B12J75R is determined by the following critical parameters:

• Resistance value: 75 Ohms
• Tolerance: ±5%
• Power rating: 12W
• Composition: Wirewound
• Package type: Axial
• Physical dimensions: 0.313" Dia x 1.750" L (7.94mm x 44.45mm)
• Temperature coefficient: ±260ppm/°C
• Features: Flame retardant coating and safety construction

The B12J75RE meets all these criteria and qualifies as a parametric equivalent. Both parts share identical electrical specifications and mechanical form factors, enabling direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both B12J75R and B12J75RE are active production parts from Ohmite with identical electrical and mechanical specifications. The primary distinction is regulatory compliance: B12J75RE is RoHS compliant with MSL rating of 1 (Unlimited), while B12J75R is RoHS non-compliant. Selection between these parts should be based on application requirements for environmental compliance and regulatory standards. Both parts are suitable for equivalent circuit performance and direct board-level substitution.

Frequently Asked Questions (FAQ)

Q: Can B12J75RE be used as a direct replacement for B12J75R?

A: Yes. Both parts share identical resistance (75 Ohms), tolerance (±5%), power rating (12W), composition (wirewound), axial package type, physical dimensions (0.313" Dia x 1.750" L), and temperature coefficient (±260ppm/°C). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between B12J75R and B12J75RE?

A: The primary differences are RoHS compliance status and moisture sensitivity level. B12J75RE is RoHS compliant with MSL 1 (Unlimited), while B12J75R is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts have identical dimensions of 0.313" Dia x 1.750" L (7.94mm x 44.45mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS compliance, B12J75RE is the appropriate choice. Both parts are active in production and available in inventory.

Q: Do these parts have the same temperature coefficient?

A: Yes. Both B12J75R and B12J75RE have a temperature coefficient of ±260ppm/°C, ensuring equivalent thermal performance across operating conditions.