Equivalent & Substitute Parts for 45F2K0E

Part Overview

The Ohmite 45F2K0E is a 2 kOhms ±1% 5W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is actively manufactured and stocked with 3,322 units available. Alternative equivalent parts may be required due to supply chain considerations, packaging preferences, or specific application requirements such as moisture resistance or enhanced safety features.

Substiute Parts

45F2K0E

OhmiteIn Stock: 338145F2K0E Datasheet

Current PartRFQ

RS0052K000FE73

Vishay DaleIn Stock: 2316RS0052K000FE73 Datasheet

SimilarRFQ

UB5C-2KF1

RiedonIn Stock: 4940UB5C-2KF1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent substitution for the 45F2K0E is determined by strict alignment of the following electrical and mechanical parameters:

• Resistance value: 2 kOhms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Number of terminations: 2

All substitute parts listed meet these core requirements. Variations in physical dimensions, operating temperature range limits, and additional features (such as moisture resistance or flame proof ratings) do not affect functional equivalence but may influence selection based on specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

All three parts are actively manufactured and meet the core electrical specifications for direct substitution. Selection should be based on the following factors:

45F2K0E (Ohmite): Offers the highest maximum operating temperature at 275°C and is supplied in box packaging. Suitable for applications requiring extended temperature performance.

RS0052K000FE73 (Vishay Dale): Features moisture-resistant construction and the lowest minimum operating temperature at -65°C. ROHS3 compliant. Supplied in cut tape packaging for automated assembly processes.

UB5C-2KF1 (Riedon): Provides the most compact physical dimensions and includes additional safety features (flame proof, pulse withstanding, current sense capability). ROHS3 compliant with REACH unaffected status. Supplied in bulk packaging.

All parts carry RoHS compliance certifications appropriate for their manufacturing status and are suitable for direct circuit board replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Can RS0052K000FE73 replace 45F2K0E in all applications?

A: Yes, for electrical functionality. The RS0052K000FE73 meets all core electrical parameters. However, verify that the lower maximum operating temperature (250°C vs. 275°C) and slightly smaller physical dimensions are acceptable for your specific application and PCB layout.

Q: What are the physical dimension differences between these parts?

A: The 45F2K0E measures 0.343" diameter × 0.937" length. The RS0052K000FE73 is slightly smaller at 0.312" × 0.875". The UB5C-2KF1 is the most compact at 0.250" × 0.500". Verify PCB hole spacing and component clearance before substitution.

Q: Are there any compliance differences?

A: The 45F2K0E is RoHS Compliant. Both RS0052K000FE73 and UB5C-2KF1 are ROHS3 Compliant, representing updated compliance standards. All parts carry EAR99 ECCN classification and 8533.21.0080 HTSUS code.

Q: Which substitute offers the widest operating temperature range?

A: The RS0052K000FE73 provides the lowest minimum temperature at -65°C. The 45F2K0E provides the highest maximum temperature at 275°C. Select based on your application's specific temperature requirements.

Q: Does packaging type affect electrical performance?

A: No. Packaging differences (box, cut tape, bulk) are for supply chain and assembly convenience only. Electrical and mechanical performance remain identical across all three parts.

Q: Can UB5C-2KF1 be used in space-constrained designs?

A: Yes. The UB5C-2KF1 has the smallest footprint and may be preferred for compact layouts. Verify that the reduced physical size does not conflict with your PCB design requirements or component spacing.