Ohmite 40F47R Equivalent & Substitute Parts

Part Overview

The Ohmite 40F47R is a 47 Ohm, 1% tolerance, 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production with 1,066 units in stock. Axial wirewound resistors of this specification are used in power applications requiring precise resistance values and high power dissipation capabilities. Alternative part sourcing becomes necessary due to supply chain considerations, packaging preferences, or compliance requirements specific to end-use applications.

Substiute Parts

40F47R

OhmiteIn Stock: 107640F47R Datasheet

Current PartRFQ

40F47RE

OhmiteIn Stock: 101840F47RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 40F47R is determined by strict equivalence across the following critical parameters:

• Resistance value: 47 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 substitute part 40F47RE meets all these criteria and is therefore a parametric equivalent. Differences in packaging format (Bulk vs. standard) and RoHS compliance status do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F47R and 40F47RE are active production components from Ohmite's Ohmicone® 40 series with identical electrical and mechanical specifications. Selection between these parts should be based on application-specific compliance requirements. The 40F47RE offers ROHS3 compliance, making it suitable for applications subject to RoHS directives. The 40F47R, while RoHS non-compliant, remains available for applications without such regulatory constraints. Both parts maintain REACH Unaffected status and identical ECCN and HTSUS classifications. Inventory levels are comparable, with the 40F47R currently showing slightly higher stock availability.

Frequently Asked Questions (FAQ)

Q: Are the 40F47R and 40F47RE electrically interchangeable?

A: Yes. Both parts have identical resistance values (47 Ohms), tolerance (±1%), power rating (10W), temperature coefficient (±20ppm/°C), and wirewound composition. They are direct electrical equivalents.

Q: What is the difference between these two parts?

A: The primary differences are packaging format (standard vs. Bulk) and RoHS compliance status. The 40F47RE is ROHS3 compliant, while the 40F47R is RoHS non-compliant. All electrical and mechanical parameters are identical.

Q: Can I use the 40F47RE as a direct replacement for the 40F47R in my circuit?

A: Yes, provided your application does not have specific packaging or compliance restrictions. The parts are mechanically and electrically identical in all critical parameters.

Q: Does RoHS compliance affect the component's performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical electrical characteristics.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.406" Dia x 1.902" L (10.30mm x 48.30mm) and use the same axial package configuration.

Q: Which part should I specify for new designs?

A: Selection depends on your application's regulatory requirements. For applications requiring RoHS compliance, specify the 40F47RE. For applications without such requirements, either part is suitable based on availability and procurement preferences.