Ohmite 43J3K9 Equivalent & Substitute Parts

Part Overview

The Ohmite 43J3K9 is a 3.9 kOhms ±5% 3W through-hole resistor with axial wirewound composition, part of the Ohmicone® 40 series. This component is currently active in production. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when packaging requirements differ.

Substiute Parts

43J3K9

OhmiteIn Stock: 88143J3K9 Datasheet

Current PartRFQ

43J3K9E

OhmiteIn Stock: 117343J3K9E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43J3K9 are qualified based on matching the following critical electrical and mechanical parameters:

• Resistance value: 3.9 kOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.220" Dia x 0.594" L (5.60mm x 15.10mm)
• Termination count: 2

The substitute part 43J3K9E maintains identical electrical specifications and physical form factor, with the primary distinction being packaging configuration (Bulk versus standard packaging).

Parameter Comparison

Engineering Selection Recommendations

Both the 43J3K9 and 43J3K9E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

The 43J3K9E offers ROHS3 compliance, making it suitable for applications requiring RoHS3 certification. The 43J3K9 is RoHS non-compliant and should be selected only when RoHS compliance is not a requirement.

Packaging configuration differs between the two parts: the 43J3K9 uses standard packaging while the 43J3K9E is supplied in bulk packaging. Bulk packaging is typically used for high-volume manufacturing operations, while standard packaging is suitable for general component procurement.

Both parts carry identical ECCN (EAR99) and HTSUS (8533.21.0080) classifications.

Frequently Asked Questions (FAQ)

Q: Can the 43J3K9E be used as a direct replacement for the 43J3K9?

A: Yes. Both parts are electrically and mechanically identical, with matching resistance values, tolerances, power ratings, temperature coefficients, and physical dimensions. The primary differences are packaging configuration and RoHS compliance status.

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

A: Standard packaging (43J3K9) is the conventional form factor for component distribution. Bulk packaging (43J3K9E) is used for high-volume orders and typically offers cost advantages for large-scale manufacturing operations.

Q: Does RoHS compliance affect component performance?

A: RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical electrical characteristics. Selection should be based on application requirements and regulatory compliance mandates.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 43J3K9 and 43J3K9E measure 0.220" Dia x 0.594" L (5.60mm x 15.10mm) and are compatible with identical PCB layouts and mechanical assemblies.

Q: What certifications apply to both parts?

A: Both parts are classified under ECCN EAR99 and HTSUS 8533.21.0080. The 43J3K9E additionally carries ROHS3 compliance certification.