Ohmite 40F500 Equivalent & Substitute Parts

Part Overview

The Ohmite 40F500 is a 500 Ohm, 1% tolerance, 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active and remains in production. Substitute parts are identified when original stock availability is limited, when packaging requirements differ, or when compliance certifications need to be updated for specific applications.

Substiute Parts

40F500

OhmiteIn Stock: 90540F500 Datasheet

Current PartRFQ

40F500E

OhmiteIn Stock: 89340F500E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 40F500E is classified as a parametric equivalent to the 40F500. Substitution is valid based on the following criteria:

• Identical resistance value: 500 Ohms
• Identical tolerance: ±1%
• Identical power rating: 10W
• Identical composition: Wirewound
• Identical package type: Axial
• Identical temperature coefficient: ±20ppm/°C
• Identical physical dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm)
• Identical number of terminations: 2
• Same manufacturer: Ohmite
• Same series: Ohmicone® 40

The primary difference between these parts is packaging format and RoHS compliance status. The 40F500E is supplied in Bulk packaging and carries ROHS3 compliance, whereas the 40F500 is RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F500 and 40F500E are Active products from Ohmite and are electrically and mechanically identical. Selection between these parts should be based on compliance requirements and packaging needs:

• Use 40F500 when RoHS non-compliant components are acceptable and standard packaging is required.
• Use 40F500E when ROHS3 compliance is mandated by design specifications or regulatory requirements, or when bulk packaging is preferred for high-volume applications.

Both parts carry identical REACH and ECCN classifications, ensuring consistent regulatory treatment across supply chains.

Frequently Asked Questions (FAQ)

Q: Can the 40F500E replace the 40F500 in existing designs?

A: Yes. The 40F500E is electrically and mechanically identical to the 40F500. All electrical parameters, physical dimensions, and performance characteristics are equivalent. The primary difference is RoHS compliance status and packaging format.

Q: What is the difference between the packaging formats?

A: The 40F500 uses standard packaging, while the 40F500E is supplied in Bulk packaging. Both formats contain the same component with identical specifications. Bulk packaging is typically used for high-volume procurement.

Q: Does RoHS compliance affect component performance?

A: No. RoHS compliance relates to material composition and manufacturing processes, not electrical performance. Both the 40F500 and 40F500E deliver identical electrical characteristics and reliability.

Q: Are there any dimensional differences between these parts?

A: No. Both parts share identical physical dimensions of 0.406" Dia x 1.902" L (10.30mm x 48.30mm) and are fully interchangeable in PCB layouts and mechanical assemblies.

Q: Which part should I specify for new designs?

A: Specify the 40F500E for new designs if ROHS3 compliance is required by your application or regional regulations. Both parts are Active and in production, ensuring long-term availability.