Ohmite 40F1R5 Equivalent & Substitute Parts

Part Overview

The Ohmite 40F1R5 is a 1.5 Ohm ±1% 10W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production and maintains 1045 units in new original stock. The 40F1R5 is classified as RoHS non-compliant, which may necessitate identification of compliant alternatives for applications subject to RoHS regulations or procurement policies requiring RoHS certification.

Substiute Parts

40F1R5

OhmiteIn Stock: 114840F1R5 Datasheet

Current PartRFQ

40F1R5E

OhmiteIn Stock: 115640F1R5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 40F1R5 is determined by the following critical parameters:

• Resistance Value: 1.5 Ohms (exact match required)
• Tolerance: ±1% (precision specification)
• Power Rating: 10W (thermal and current handling capability)
• Composition: Wirewound (performance characteristics and frequency response)
• Package Type: Axial (physical form factor and PCB compatibility)
• Temperature Coefficient: ±20ppm/°C (temperature stability)
• Physical Dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm) (board layout and spacing)

The 40F1R5E qualifies as a parametric equivalent substitute, matching all electrical and mechanical specifications while offering improved regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The 40F1R5E serves as the direct substitute for the 40F1R5 when RoHS3 compliance is required. Both components are manufactured by Ohmite within the Ohmicone® 40 series and maintain identical electrical and mechanical specifications. The 40F1R5E achieves ROHS3 compliance while preserving all performance characteristics of the original part. Selection between these two parts should be based on regulatory requirements and procurement policies governing RoHS compliance in the target application or end market.

Frequently Asked Questions (FAQ)

Q: Can the 40F1R5E be used as a direct replacement for the 40F1R5?

A: Yes. The 40F1R5E is electrically and mechanically identical to the 40F1R5. Both components share the same resistance value (1.5 Ohms), tolerance (±1%), power rating (10W), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), and physical dimensions (0.406" Dia x 1.902" L). The primary difference is RoHS compliance status.

Q: What is the key difference between these two parts?

A: The 40F1R5 is RoHS non-compliant, while the 40F1R5E is ROHS3 compliant. All other specifications are identical.

Q: Are there any physical differences between the 40F1R5 and 40F1R5E?

A: No. Both components have identical physical dimensions (0.406" Dia x 1.902" L or 10.30mm x 48.30mm) and axial package configuration, ensuring compatibility with existing PCB layouts and assembly processes.

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements applicable to your application. If RoHS3 compliance is mandatory, use the 40F1R5E. If RoHS compliance is not required, either part is acceptable based on availability and procurement policy.

Q: Are both parts currently in production?

A: Yes. Both the 40F1R5 and 40F1R5E are active products with current inventory availability (1045 and 1144 units respectively).