Equivalent & Substitute Parts for 43F4K0E

Part Overview

The 43F4K0E is a 4 kOhms ±1% 3W axial wirewound resistor manufactured by Ohmite, part of the Ohmicone® 40 series. This component is an active product with 943 pieces currently in stock. The part is ROHS3 compliant and suitable for through-hole applications requiring precision resistance values with moderate power dissipation. Substitute parts are identified to address packaging preferences, compliance requirements, or inventory availability while maintaining equivalent electrical and mechanical specifications.

Substiute Parts

43F4K0E

OhmiteIn Stock: 99443F4K0E Datasheet

Current PartRFQ

RS02B4K000FE70

Vishay DaleIn Stock: 4332RS02B4K000FE70 Datasheet

MFR RecommendedRFQ

43F4K0

OhmiteIn Stock: 107643F4K0 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43F4K0E are qualified based on matching the following critical parameters: resistance value (4 kOhms), tolerance (±1%), power rating (3W), composition (wirewound), package type (axial), and temperature coefficient (±20ppm/°C). All substitute parts maintain these core electrical and mechanical specifications, ensuring functional equivalence in circuit applications.

Two substitute parts are identified:

1. RS02B4K000FE70 (Vishay Dale, RS series) — Manufacturer-recommended substitute with moisture-resistant features and active product status.
2. 43F4K0 (Ohmite, Ohmicone® 40 series) — Parametric equivalent from the same manufacturer and series, differing in packaging and compliance status.

Parameter Comparison

Engineering Selection Recommendations

43F4K0E (Primary Part): Select this part when ROHS3 compliance is required and bulk packaging is acceptable. Active product status ensures continued availability and support.

RS02B4K000FE70 (Manufacturer-Recommended Substitute): This Vishay Dale part is the preferred alternative when moisture-resistant features are beneficial for the application environment. It maintains ROHS3 compliance and active product status. Cut tape packaging is suitable for automated assembly processes. Higher inventory availability (4300 pieces) supports production volume requirements. Slightly smaller physical dimensions (0.187" diameter vs. 0.220") may affect board layout considerations.

43F4K0 (Parametric Equivalent): This Ohmite part provides parametric equivalence within the same series and manufacturer. However, RoHS non-compliance restricts its use in applications requiring regulatory compliance. Select only when RoHS compliance is not a design requirement and bulk packaging is preferred.

Frequently Asked Questions (FAQ)

Q: Can RS02B4K000FE70 be used as a direct replacement for 43F4K0E?

A: Yes. Both parts share identical electrical specifications (4 kOhms, ±1%, 3W, ±20ppm/°C) and axial wirewound composition. The primary differences are packaging format (cut tape vs. bulk), physical dimensions, and moisture-resistant features. Verify board layout compatibility due to the smaller diameter (0.187" vs. 0.220").

Q: What is the difference between 43F4K0E and 43F4K0?

A: Both are Ohmite Ohmicone® 40 series parts with identical electrical and mechanical specifications. The key difference is RoHS compliance status: 43F4K0E is ROHS3 compliant, while 43F4K0 is RoHS non-compliant. Packaging is bulk for both. Select 43F4K0E for applications requiring regulatory compliance.

Q: Are there operating temperature differences between these parts?

A: The 43F4K0E and 43F4K0 do not specify operating temperature ranges in the provided data. RS02B4K000FE70 specifies -65°C to 250°C operating range. Verify operating temperature requirements against your application specifications before selection.

Q: Does the moisture-resistant feature of RS02B4K000FE70 affect electrical performance?

A: Moisture resistance is a material feature that does not alter the core electrical parameters (resistance, tolerance, power rating, temperature coefficient). It provides environmental protection in humid or moisture-prone applications without changing circuit behavior.

Q: How do physical dimensions affect substitution?

A: RS02B4K000FE70 has a smaller diameter (0.187" vs. 0.220") and length (0.560" vs. 0.594") compared to 43F4K0E and 43F4K0. Verify PCB layout, component spacing, and mechanical clearances before substitution to ensure physical fit within the design.

Q: Which part should be selected for new designs?

A: For new designs requiring regulatory compliance, select 43F4K0E or RS02B4K000FE70. Both are ROHS3 compliant and active products. RS02B4K000FE70 is recommended when moisture resistance and higher inventory availability are advantageous. Verify physical dimensions against board layout requirements.