Ohmite 40F330 330 Ohm 10W Axial Wirewound Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite 40F330 is a 330 Ohm, ±1% tolerance, 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is designed for applications requiring precise resistance values with high power dissipation capability in a compact axial package. The part is currently active in production with 861 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Substiute Parts

40F330

OhmiteIn Stock: 91440F330 Datasheet

Current PartRFQ

40F330E

OhmiteIn Stock: 95940F330E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 40F330E is classified as a parametric equivalent to the 40F330. Substitution is valid based on the following critical parameters that must remain identical:

• Resistance value: 330 Ohms
• Tolerance: ±1%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm)
• Number of terminations: 2

The 40F330E maintains all electrical and mechanical specifications required for direct substitution in circuits designed for the 40F330.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F330 and 40F330E are active production parts with full inventory availability. The primary distinction between these parts is compliance status:

The 40F330 is RoHS non-compliant, while the 40F330E is ROHS3 compliant. For applications subject to RoHS regulations or requiring compliance documentation, the 40F330E is the appropriate selection. For applications without RoHS requirements, either part is electrically and mechanically equivalent.

Both parts carry identical electrical specifications, physical dimensions, and thermal characteristics. Selection between these parts should be based on regulatory compliance requirements of the end application and supply chain constraints.

Frequently Asked Questions (FAQ)

Q: Can the 40F330E be used as a direct replacement for the 40F330?

A: Yes. The 40F330E is electrically and mechanically identical to the 40F330. All critical parameters including resistance, tolerance, power rating, temperature coefficient, and physical dimensions are identical. The parts are interchangeable in circuit design and PCB layout.

Q: What is the difference between the 40F330 and 40F330E?

A: The primary difference is RoHS compliance status. The 40F330E is ROHS3 compliant, while the 40F330 is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use the identical axial package configuration with dimensions of 0.406" Dia x 1.902" L (10.30mm x 48.30mm). PCB layout and component placement are identical.

Q: Which part should I specify for new designs?

A: For new designs subject to RoHS regulations, specify the 40F330E. For applications without RoHS requirements, either part meets the electrical and mechanical requirements. Consult your supply chain and regulatory requirements to determine the appropriate selection.

Q: Are both parts currently available?

A: Yes. The 40F330 has 861 units in stock, and the 40F330E has 849 units in stock. Both parts are active production items.