Equivalent & Substitute Parts for 40FR30

Part Overview

The 40FR30 is a 300 mOhms ±1% 10W axial wirewound through-hole resistor manufactured by Ohmite as part of the Ohmicone® 40 series. This component is currently in active production status. Finding equivalent or substitute parts may be necessary due to inventory availability, packaging requirements, or compliance specifications for end-use applications.

Substiute Parts

40FR30

OhmiteIn Stock: 103640FR30 Datasheet

Current PartRFQ

40FR30E

OhmiteIn Stock: 129640FR30E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 40FR30E qualifies as a parametric equivalent to the 40FR30 based on the following criteria:

• Identical resistance value: 300 mOhms
• Identical tolerance: ±1%
• Identical power rating: 10W
• Identical composition: Wirewound
• Identical package type: Axial
• Identical temperature coefficient: ±90ppm/°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.

Parameter Comparison

Engineering Selection Recommendations

Both the 40FR30 and 40FR30E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on:

• RoHS compliance requirements: The 40FR30E meets ROHS3 compliance, while the 40FR30 is RoHS non-compliant. Applications subject to RoHS directives require the 40FR30E.
• Packaging format: The 40FR30E is supplied in bulk packaging, while the 40FR30 uses standard packaging. Procurement volume and handling requirements may influence this choice.
• Inventory availability: The 40FR30E currently has 1231 pieces in stock compared to 974 pieces for the 40FR30.

Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99).

Frequently Asked Questions (FAQ)

Q: Can the 40FR30E directly replace the 40FR30 in existing designs?

A: Yes. The 40FR30E is electrically and mechanically identical to the 40FR30. Both components have the same resistance value, tolerance, power rating, temperature coefficient, and physical dimensions. Direct substitution is possible from a functional standpoint.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format and RoHS compliance status. The 40FR30E is supplied in bulk packaging and meets ROHS3 compliance requirements, while the 40FR30 uses standard packaging and is RoHS non-compliant.

Q: Which part should I specify for new designs?

A: If your application or end market requires RoHS compliance, specify the 40FR30E. Both parts are in active production and available from inventory.

Q: Are there any performance differences between these parts?

A: No. Both parts have identical electrical characteristics, including 300 mOhms resistance, ±1% tolerance, 10W power rating, and ±90ppm/°C temperature coefficient.

Q: Do these parts have the same physical footprint?

A: Yes. Both the 40FR30 and 40FR30E have identical dimensions of 0.406" diameter by 1.902" length (10.30mm x 48.30mm) and are packaged in axial configuration with two terminations.