Ohmite 43F125 Equivalent & Substitute Parts

Part Overview

The Ohmite 43F125 is a 125 Ohm ±1% 3W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active product status and is currently in stock with 869 pieces available. Equivalent and substitute parts are identified to provide procurement flexibility, support supply chain continuity, and accommodate specific packaging or compliance requirements in electronic assemblies.

Substiute Parts

43F125

OhmiteIn Stock: 92543F125 Datasheet

Current PartRFQ

43F125E

OhmiteIn Stock: 116343F125E Datasheet

Parametric EquivalentRFQ

43F125E

OhmiteIn Stock: 116343F125E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Ohmite 43F125 is based on electrical and mechanical parameter equivalence. The primary substitute, Ohmite 43F125E, maintains identical electrical specifications: 125 Ohms resistance, ±1% tolerance, and 3W power rating. Both parts share the same wirewound composition, axial package configuration, temperature coefficient of ±20ppm/°C, and physical dimensions of 0.220" Dia x 0.594" L (5.60mm x 15.10mm).

The key differentiator between the main part and its substitute is packaging format and compliance status. The 43F125E is supplied in Bulk packaging with RoHS Compliant certification and MSL 1 (Unlimited) rating, whereas the 43F125 is RoHS non-compliant. Both parts are Active status components suitable for direct substitution in applications where the specified electrical and mechanical parameters are required.

Parameter Comparison

Engineering Selection Recommendations

Both the 43F125 and 43F125E are Active status components from Ohmite suitable for direct substitution based on electrical and mechanical equivalence. Selection between these parts should be based on compliance requirements and packaging needs.

The 43F125E is the preferred selection for applications requiring RoHS compliance, as it carries RoHS Compliant certification. The 43F125 is suitable for applications where RoHS compliance is not a requirement. The 43F125E offers higher inventory availability at 1113 pieces compared to 869 pieces for the 43F125, supporting supply chain planning.

Both parts carry ECCN EAR99 classification and are suitable for the same circuit applications requiring 125 Ohm ±1% 3W axial wirewound resistors.

Frequently Asked Questions (FAQ)

Q: Can the 43F125E directly replace the 43F125 in existing designs?

A: Yes. The 43F125E is electrically and mechanically equivalent to the 43F125. Both parts have identical resistance (125 Ohms), tolerance (±1%), power rating (3W), temperature coefficient (±20ppm/°C), and physical dimensions (0.220" Dia x 0.594" L). Direct substitution is supported for applications where the specified parameters are required.

Q: What is the primary difference between these two parts?

A: The primary differences are packaging format and compliance status. The 43F125E is supplied in Bulk packaging and carries RoHS Compliant certification with MSL 1 (Unlimited) rating. The 43F125 is RoHS non-compliant. Both are Active status components from Ohmite.

Q: Are there any dimensional or footprint differences between the 43F125 and 43F125E?

A: No. Both parts share identical physical dimensions of 0.220" Dia x 0.594" L (5.60mm x 15.10mm) and the same axial package configuration. PCB layout and mounting considerations are identical.

Q: Which part should be selected for new designs?

A: Selection depends on compliance requirements. For designs requiring RoHS compliance, the 43F125E is the appropriate choice. For applications without RoHS requirements, either part is suitable based on availability and procurement preferences.

Q: Are both parts currently available?

A: Yes. The 43F125 has 869 pieces in stock, and the 43F125E has 1113 pieces in stock. Both are classified as New Original In Stock.