Equivalent & Substitute Parts for B12J3K0

Part Overview

The B12J3K0 is a 3 kOhms ±5% 12W through-hole wirewound resistor manufactured by Ohmite, part of the Brown Devil® 200 series. This axial resistor features flame retardant coating and safety construction, designed for applications requiring reliable power dissipation in through-hole configurations. The part is currently active in production with 820 units in stock. Alternative packaging options are available to accommodate different procurement and assembly requirements.

Substiute Parts

B12J3K0

OhmiteIn Stock: 885B12J3K0 Datasheet

Current PartRFQ

B12J3K0E

OhmiteIn Stock: 1164B12J3K0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The B12J3K0E is classified as a parametric equivalent to the B12J3K0. Substitution is valid based on the following matching electrical and mechanical parameters:

• Resistance value: 3 kOhms (identical)
• Tolerance: ±5% (identical)
• Power rating: 12W (identical)
• Composition: Wirewound (identical)
• Package type: Axial (identical)
• Temperature coefficient: ±260ppm/°C (identical)
• Features: Flame retardant coating, safety construction (identical)
• Physical dimensions: 0.313" Dia x 1.750" L (identical)
• Terminations: 2 (identical)
• Series: Brown Devil® 200 (identical)

The primary difference between these parts is packaging format: B12J3K0 is supplied in box packaging, while B12J3K0E is supplied in bulk packaging. This distinction affects procurement and handling but does not alter electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

Both B12J3K0 and B12J3K0E are active production parts from Ohmite's Brown Devil® 200 series with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

B12J3K0 (Box Packaging): Select this part when box packaging is required for inventory management, traceability, or assembly line handling procedures. This variant is RoHS non-compliant.

B12J3K0E (Bulk Packaging): Select this part when bulk packaging is acceptable for your procurement and assembly workflow. This variant is ROHS3 compliant, making it suitable for applications subject to RoHS3 regulatory requirements. Higher inventory availability (1126 units) may support shorter lead times.

Both parts are suitable for direct substitution in applications requiring 3 kOhms ±5% 12W wirewound axial resistors with flame retardant coating and safety features. Compliance requirements should drive the final selection between these variants.

Frequently Asked Questions (FAQ)

Q: Can B12J3K0E replace B12J3K0 in my circuit design?

A: Yes. The B12J3K0E is a parametric equivalent with identical electrical and mechanical specifications. All key parameters—resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions—are identical. The only differences are packaging format and RoHS compliance status.

Q: What is the difference between box and bulk packaging?

A: Box packaging (B12J3K0) provides individual unit packaging suitable for controlled inventory and traceability. Bulk packaging (B12J3K0E) supplies multiple units in a single container, typically used for high-volume assembly operations. Both contain the same component with identical performance characteristics.

Q: Does RoHS compliance affect component performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical or mechanical performance. Both the RoHS non-compliant B12J3K0 and ROHS3 compliant B12J3K0E deliver identical performance in circuit applications. Select based on your regulatory and procurement requirements.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both B12J3K0 and B12J3K0E have identical dimensions of 0.313" diameter by 1.750" length (7.94mm x 44.45mm). They are mechanically interchangeable in PCB layouts and through-hole applications.

Q: Which part should I specify for new designs?

A: For new designs, consider B12J3K0E if ROHS3 compliance is required or preferred. For existing designs currently using B12J3K0, either part provides equivalent performance. Verify your application's regulatory and compliance requirements before final selection.