Ohmite 45F15R Equivalent & Substitute Parts

Part Overview

The Ohmite 45F15R is a 15 Ohm, 1% tolerance, 5W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision resistive elements with stable performance across operating conditions. The part is currently active in production with 992 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

45F15R

OhmiteIn Stock: 103645F15R Datasheet

Current PartRFQ

45F15RE

OhmiteIn Stock: 140045F15RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Ohmite 45F15R is determined by electrical and mechanical parameter equivalence. The substitute part must match the following critical parameters:

• Resistance value: 15 Ohms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Termination count: 2

The identified substitute part, Ohmite 45F15RE, meets all electrical and mechanical specifications for direct substitution. The primary difference is packaging format and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 45F15R and 45F15RE are electrically and mechanically identical components from Ohmite's Ohmicone® 40 series. Selection between these parts should be based on the following criteria:

45F15R is appropriate for applications where standard packaging is required or when RoHS non-compliant components are acceptable per design specifications.

45F15RE is the preferred selection for applications requiring ROHS3 compliance. This part offers identical electrical performance and physical form factor with enhanced regulatory compliance status. Higher inventory availability (1387 units versus 992 units) provides additional supply chain advantage.

Both parts are active products with stable long-term availability from the manufacturer.

Frequently Asked Questions (FAQ)

Q: Can 45F15RE be used as a direct replacement for 45F15R in existing designs?

A: Yes. The 45F15RE is electrically and mechanically identical to the 45F15R. Both components share identical resistance, tolerance, power rating, temperature coefficient, and physical dimensions. Direct substitution is possible without circuit modification.

Q: What is the difference between 45F15R and 45F15RE?

A: The primary differences are packaging format and RoHS compliance status. The 45F15R uses standard packaging and is RoHS non-compliant. The 45F15RE uses bulk packaging and is ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both parts are axial wirewound resistors with identical lead configurations, physical dimensions, and electrical characteristics. They are interchangeable in PCB layouts and through-hole applications.

Q: Which part should be selected for new designs?

A: For new designs, the 45F15RE is recommended due to ROHS3 compliance, which aligns with current regulatory requirements and industry standards. The identical electrical performance ensures no design changes are required.

Q: What is the temperature coefficient significance for these parts?

A: The ±20ppm/°C temperature coefficient indicates the resistance change per degree Celsius. Both parts maintain this specification, ensuring stable performance across the operating temperature range. This specification is critical for precision applications requiring consistent resistive values.