Ohmite 41F150E Equivalent & Substitute Parts

Part Overview

The Ohmite 41F150E is a 1W, 150 Ohms ±1% through-hole resistor in the Ohmicone® 40 series, designed for axial wirewound applications. This component is classified as Active product status and is RoHS Compliant. Equivalent and substitute parts are identified when identical electrical specifications and compatible mechanical packaging are required for circuit design flexibility, inventory management, or supply chain optimization.

Substiute Parts

41F150E

OhmiteIn Stock: 80741F150E Datasheet

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WHB150FET

OhmiteIn Stock: 2953WHB150FET Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 41F150E are identified based on the following critical parameters:

• Electrical Match: Resistance value (150 Ohms), tolerance (±1%), and power rating (1W) must be identical
• Composition: Wirewound construction required
• Temperature Coefficient: ±20ppm/°C specification maintained
• Package Compatibility: Axial through-hole configuration
• Compliance: RoHS Compliant status
• Moisture Sensitivity: MSL 1 (Unlimited) rating

The WHB150FET meets all electrical and mechanical substitution criteria, with the distinction of non-inductive construction and different packaging format (Tape & Reel vs. Box).

Parameter Comparison

Engineering Selection Recommendations

Both the 41F150E and WHB150FET are Active product status components manufactured by Ohmite with RoHS Compliance certification. Selection between these parts is determined by application-specific requirements:

• 41F150E: Suitable for applications requiring the full operating temperature range of -55°C to 275°C and box packaging format
• WHB150FET: Suitable for applications with operating temperature requirements up to 150°C, featuring non-inductive construction and tape & reel packaging for automated assembly processes

Physical dimensions differ slightly between the two parts. The 41F150E measures 0.126" diameter by 0.437" length, while the WHB150FET measures 0.130" diameter by 0.276" length. PCB layout and mechanical clearance must be verified for the selected substitute.

Frequently Asked Questions (FAQ)

Q: Can WHB150FET replace 41F150E in all applications?

A: Electrical substitution is valid when operating temperature does not exceed 150°C. The 41F150E supports temperatures to 275°C; applications requiring this extended range must use the 41F150E. Physical dimensions differ; verify PCB layout compatibility.

Q: What is the significance of "Non-Inductive" in the WHB150FET specification?

A: Non-inductive construction reduces parasitic inductance in the wirewound resistor, beneficial for high-frequency applications. The 41F150E does not specify this feature. Application requirements determine whether non-inductive construction is necessary.

Q: Are packaging format differences significant for substitution?

A: Yes. The 41F150E is supplied in Box packaging; the WHB150FET is supplied in Tape & Reel (TR) format. Box packaging is suitable for manual assembly and small-volume applications. Tape & Reel format is optimized for automated pick-and-place assembly. Inventory and assembly process requirements determine the appropriate packaging format.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both 41F150E and WHB150FET are RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited), suitable for applications with RoHS regulatory requirements.

Q: What is the impact of different physical dimensions on circuit design?

A: The WHB150FET is physically smaller (0.276" length vs. 0.437" length). PCB layout, component spacing, and thermal management considerations must be evaluated. Verify that the substitute part fits within available board space and does not create thermal or electrical interference issues.