Ohmite 40F1K5 Equivalent & Substitute Parts

Part Overview

The Ohmite 40F1K5 is a 1.5 kOhms ±1% 10W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently in active production status. Substitute parts may be required due to packaging preferences, compliance requirements, or inventory availability across different distribution channels.

Substiute Parts

40F1K5

OhmiteIn Stock: 106840F1K5 Datasheet

Current PartRFQ

40F1K5E

OhmiteIn Stock: 127140F1K5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 40F1K5E qualifies as a parametric equivalent based on identical electrical and mechanical specifications. Substitution is valid when the following criteria are met:

• Resistance value: 1.5 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 10W (exact match)
• Composition: Wirewound (exact match)
• Package: Axial (exact match)
• Temperature coefficient: ±20ppm/°C (exact match)
• Physical dimensions: 0.406" Dia x 1.902" L (exact match)
• Number of terminations: 2 (exact match)

The primary difference between these parts is packaging configuration and RoHS compliance status, which do not affect electrical or mechanical interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F1K5 and 40F1K5E are electrically and mechanically identical and may be used interchangeably in circuit designs requiring a 1.5 kOhms ±1% 10W axial wirewound resistor.

Selection between these parts should be based on:

• RoHS compliance requirements: The 40F1K5E meets ROHS3 compliance, while the 40F1K5 does not
• Packaging requirements: The 40F1K5E is supplied in bulk packaging, while the 40F1K5 uses standard packaging
• Regulatory or procurement specifications applicable to the end application

Both parts maintain active production status and are available in inventory.

Frequently Asked Questions (FAQ)

Q: Can the 40F1K5E replace the 40F1K5 in existing designs?

A: Yes. The 40F1K5E is electrically and mechanically identical to the 40F1K5. All electrical parameters, physical dimensions, and performance characteristics are equivalent. Substitution is valid for any application using the 40F1K5.

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

A: The primary differences are packaging configuration (bulk versus standard) and RoHS compliance status. The 40F1K5E is ROHS3 compliant, while the 40F1K5 is not. Electrical and mechanical specifications are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.406" diameter by 1.902" length (10.30mm x 48.30mm) and use identical axial package construction with two terminations.

Q: Which part should I specify for new designs?

A: Selection depends on regulatory requirements. If RoHS3 compliance is required, specify the 40F1K5E. If RoHS compliance is not a requirement, either part is suitable. Verify packaging requirements with your procurement specifications.

Q: Are there any performance differences between these parts?

A: No. Both parts have identical resistance values (1.5 kOhms), tolerance (±1%), power rating (10W), temperature coefficient (±20ppm/°C), and composition (wirewound). Performance in circuit applications is equivalent.