Equivalent & Substitute Parts for Ohmite 45F15K

Part Overview

The Ohmite 45F15K is a 15 kOhms ±1% 5W through-hole resistor with axial wirewound composition, part of the Ohmicone® 40 series. This component is currently active in production with 655 pieces in stock. Finding equivalent and substitute parts may be necessary due to supply chain considerations, packaging preferences, or specific compliance requirements for end applications.

Substiute Parts

45F15K

OhmiteIn Stock: 73045F15K Datasheet

Current PartRFQ

45F15KE

OhmiteIn Stock: 90645F15KE Datasheet

DirectRFQ

ALSR0515K00FE12

Vishay DaleIn Stock: 1207ALSR0515K00FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 45F15K are qualified based on the following critical parameters:

• Resistance value: 15 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

The identified substitutes meet all core electrical and mechanical requirements. Variations in temperature coefficient, operating temperature range, physical dimensions, and compliance certifications are noted but do not prevent functional substitution within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

All three parts meet the core electrical specifications: 15 kOhms resistance, ±1% tolerance, 5W power rating, and axial wirewound construction.

The 45F15KE (Ohmite) is a direct manufacturer equivalent with identical dimensions and temperature coefficient. This part carries RoHS Compliant status, making it suitable for applications with RoHS requirements. The 45F15K is RoHS non-compliant, so the 45F15KE provides compliance upgrade within the same manufacturer series.

The ALSR0515K00FE12 (Vishay Dale) is functionally equivalent with slightly different physical dimensions (0.312" Dia x 0.875" L versus 0.343" Dia x 0.937" L) and a higher temperature coefficient of ±30ppm/°C compared to ±20ppm/°C. This part is ROHS3 Compliant and includes moisture-resistant features. Physical dimension differences must be verified for PCB layout compatibility before selection.

Selection should be based on compliance requirements, available inventory, and physical space constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can the 45F15KE directly replace the 45F15K?

A: Yes. Both parts share identical electrical specifications (15 kOhms, ±1%, 5W), composition (wirewound), package type (axial), and physical dimensions (0.343" Dia x 0.937" L). The primary difference is RoHS compliance status. The 45F15KE is RoHS Compliant while the 45F15K is not.

Q: Can the ALSR0515K00FE12 replace the 45F15K?

A: Functionally, yes, based on core electrical parameters. However, the ALSR0515K00FE12 has smaller physical dimensions (0.312" Dia x 0.875" L) and a higher temperature coefficient (±30ppm/°C versus ±20ppm/°C). PCB layout compatibility must be verified before substitution.

Q: What are the key parameters that determine substitutability?

A: Resistance value (15 kOhms), tolerance (±1%), power rating (5W), composition (wirewound), package type (axial), and number of terminations (2) are the critical parameters. All qualified substitutes match these specifications exactly.

Q: Does the temperature coefficient difference affect substitution?

A: The ALSR0515K00FE12 has a ±30ppm/°C coefficient compared to ±20ppm/°C for the Ohmite parts. This difference may be relevant for precision applications with strict temperature stability requirements but does not prevent functional substitution for general-purpose applications.

Q: Are there packaging differences between these parts?

A: The 45F15K and 45F15KE are supplied in different packaging formats (the 45F15K packaging is not specified; the 45F15KE is Bulk). The ALSR0515K00FE12 is also supplied in Bulk. Verify packaging requirements for your procurement process.

Q: Which part has the best compliance status?

A: Both the 45F15KE and ALSR0515K00FE12 are RoHS Compliant (45F15KE is RoHS Compliant; ALSR0515K00FE12 is ROHS3 Compliant). The original 45F15K is RoHS non-compliant. For applications requiring RoHS compliance, either substitute is acceptable.