Equivalent & Substitute Parts for 43F5K0

Part Overview

The 43F5K0 is a 5 kOhms ±1% 3W axial wirewound resistor manufactured by Ohmite, part of the Ohmicone® 40 series. This component is an active product with 1114 units currently in stock. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when specific compliance requirements must be met.

Substiute Parts

43F5K0

OhmiteIn Stock: 121343F5K0 Datasheet

Current PartRFQ

43F5K0E

OhmiteIn Stock: 115543F5K0E Datasheet

DirectRFQ

ALSR035K000FE12

Vishay DaleIn Stock: 759ALSR035K000FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F5K0 is determined by the following critical parameters:

• Resistance value: 5 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial (exact match required)
• Termination count: 2 (exact match required)

Two substitute parts meet these criteria:

1. 43F5K0E (Ohmite): Identical electrical and mechanical specifications to the main part, with Bulk packaging and ROHS3 compliance.

2. ALSR035K000FE12 (Vishay Dale): Meets all critical electrical parameters with identical resistance, tolerance, power rating, and package type. Physical dimensions differ slightly (0.180" Dia x 0.500" L versus 0.220" Dia x 0.594" L), and temperature coefficient is ±30ppm/°C versus ±20ppm/°C. Includes moisture-resistant features and ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

43F5K0E is the direct equivalent substitute from Ohmite. It maintains identical electrical specifications and physical dimensions while offering ROHS3 compliance, making it suitable for applications requiring RoHS compliance.

ALSR035K000FE12 from Vishay Dale is functionally equivalent with the same resistance, tolerance, and power rating. The temperature coefficient is ±30ppm/°C compared to ±20ppm/°C for the 43F5K0, and physical dimensions are smaller. This part includes moisture-resistant features and ROHS3 compliance. Selection depends on whether the tighter temperature coefficient and larger physical dimensions of the 43F5K0 are required for the application.

Frequently Asked Questions (FAQ)

Q: Can 43F5K0E be used as a direct replacement for 43F5K0?

A: Yes. The 43F5K0E maintains identical electrical specifications (5 kOhms ±1% 3W) and physical dimensions (0.220" Dia x 0.594" L). The primary difference is packaging format and RoHS compliance status.

Q: What are the key differences between 43F5K0 and ALSR035K000FE12?

A: Both parts share identical resistance (5 kOhms), tolerance (±1%), power rating (3W), and axial package type. The ALSR035K000FE12 has a temperature coefficient of ±30ppm/°C versus ±20ppm/°C, smaller physical dimensions (0.180" Dia x 0.500" L), and includes moisture-resistant features.

Q: Will the smaller dimensions of ALSR035K000FE12 affect board layout compatibility?

A: The ALSR035K000FE12 is physically smaller than the 43F5K0. Verify that the reduced dimensions (0.180" Dia x 0.500" L versus 0.220" Dia x 0.594" L) are compatible with your PCB layout and mechanical constraints before substitution.

Q: Are all substitute parts RoHS compliant?

A: The 43F5K0E and ALSR035K000FE12 are both ROHS3 compliant. The original 43F5K0 is RoHS non-compliant.

Q: Which substitute should I select for temperature-sensitive applications?

A: The 43F5K0E maintains the ±20ppm/°C temperature coefficient of the original 43F5K0. The ALSR035K000FE12 has a ±30ppm/°C temperature coefficient, which may be acceptable depending on application requirements.