PWR4413DR040F Equivalent & Substitute Parts

Part Overview

The PWR4413DR040F is a 40 mOhms ±1% 5W through-hole resistor manufactured by Bourns Inc., designed for current sense applications with pulse withstanding capability. This radial lead component operates across a temperature range of -55°C to 325°C and features a metal element composition. The product is currently obsolete, making identification of suitable equivalent parts essential for ongoing system support and component procurement.

Substiute Parts

PWR4413DR040F

Bourns Inc.In Stock: 771PWR4413DR040F Datasheet

Current PartRFQ

MR5FB40L0

Stackpole Electronics IncIn Stock: 954MR5FB40L0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PWR4413DR040F is determined by the following critical parameters:

• Resistance Value: 40 mOhms exact match required
• Tolerance: ±1% maintained
• Power Rating: 5W minimum
• Current Sense Application: Specified feature requirement
• Electrical Specifications: Matching resistance and tolerance ensure functional equivalence in circuit operation
• Compliance: ROHS3 compliance maintained across substitutes

The MR5FB40L0 qualifies as an equivalent substitute based on matching resistance, tolerance, power rating, and current sense capability. The primary difference is the package configuration (axial versus radial) and composition (metal foil versus metal element), which represent mechanical and construction variations rather than electrical incompatibilities for this application class.

Parameter Comparison

Engineering Selection Recommendations

The MR5FB40L0 is an active product from Stackpole Electronics Inc. and represents a viable substitute for the obsolete PWR4413DR040F. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The MR5FB40L0 offers the advantage of active product status, supporting long-term availability and supply chain continuity.

Selection between radial and axial package configurations depends on PCB layout constraints and mechanical mounting requirements. The axial package of the MR5FB40L0 may require board redesign if the original radial footprint is fixed. The operating temperature range of the MR5FB40L0 (-55°C to 275°C) is slightly reduced compared to the PWR4413DR040F (-55°C to 325°C); this difference is acceptable for applications not requiring operation above 275°C.

Frequently Asked Questions (FAQ)

Q: Can the MR5FB40L0 directly replace the PWR4413DR040F without circuit modification?

A: Electrical substitution is valid based on matching resistance (40 mOhms), tolerance (±1%), and power rating (5W). Mechanical substitution requires PCB layout accommodation for the axial package configuration, as the original PWR4413DR040F uses a radial package.

Q: What is the significance of the operating temperature range difference?

A: The PWR4413DR040F operates to 325°C while the MR5FB40L0 operates to 275°C. For applications operating within -55°C to 275°C, this difference is not a limiting factor. Applications requiring operation above 275°C must retain the original PWR4413DR040F or identify alternative sources.

Q: How do metal element and metal foil compositions affect performance?

A: Both compositions are suitable for current sense applications. Metal foil construction in the MR5FB40L0 provides additional features including moisture resistance and non-inductive characteristics. Metal element construction in the PWR4413DR040F provides pulse withstanding capability. Selection depends on specific application requirements.

Q: Is the axial package of the MR5FB40L0 compatible with radial footprints?

A: No. Axial and radial packages have different lead configurations and PCB footprints. Board redesign or adapter solutions are required for mechanical compatibility.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the PWR4413DR040F and MR5FB40L0 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.