Equivalent & Substitute Parts for 43F2K2E

Part Overview

The Ohmite 43F2K2E is a 2.2 kOhms ±1% 3W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is designed for applications requiring precision resistance with high power dissipation capability in a compact form factor. The part maintains active product status with 1073 units in current inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific packaging preferences.

Substiute Parts

43F2K2E

OhmiteIn Stock: 112743F2K2E Datasheet

Current PartRFQ

RS02B2K200FE70

Vishay DaleIn Stock: 1604RS02B2K200FE70 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F2K2E is determined by the following critical parameters:

• Electrical Equivalence: Resistance value of 2.2 kOhms with ±1% tolerance and 3W power rating
• Thermal Performance: Temperature coefficient of ±20ppm/°C and compatible operating temperature range
• Construction Type: Wirewound composition for consistent performance characteristics
• Mechanical Compatibility: Axial package configuration with 2 terminations for direct board-level substitution
• Regulatory Compliance: RoHS compliance status for environmental and supply chain requirements

The Vishay Dale RS02B2K200FE70 meets all electrical and mechanical substitution criteria, with identical resistance, tolerance, power rating, temperature coefficient, and axial package configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the Ohmite 43F2K2E and Vishay Dale RS02B2K200FE70 are active products with full RoHS compliance. The primary selection criteria are:

Ohmite 43F2K2E is suitable when the extended upper operating temperature limit of 275°C is required, or when box packaging is preferred for inventory management. Current stock availability is 1073 units.

Vishay Dale RS02B2K200FE70 is suitable when moisture-resistant construction is beneficial for the application environment, or when cut tape packaging aligns with assembly processes. The lower minimum operating temperature of -65°C provides extended cold-temperature capability. Current stock availability is 1589 units. Physical dimensions are slightly smaller, which may be advantageous in space-constrained layouts.

Both parts satisfy identical electrical specifications and are mechanically compatible for direct substitution in axial through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale RS02B2K200FE70 directly replace the Ohmite 43F2K2E in existing designs?

A: Yes. Both parts share identical resistance (2.2 kOhms), tolerance (±1%), power rating (3W), temperature coefficient (±20ppm/°C), and axial package configuration. The Vishay part has slightly smaller physical dimensions and a lower minimum operating temperature (-65°C vs -55°C), but a reduced maximum operating temperature (250°C vs 275°C). Verify that the application's temperature requirements fall within the -55°C to 250°C range of the substitute part.

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

A: The Ohmite 43F2K2E measures 0.220" diameter by 0.594" length (5.60mm x 15.10mm). The Vishay Dale RS02B2K200FE70 measures 0.187" diameter by 0.560" length (4.75mm x 14.22mm). The Vishay part is smaller in both diameter and length, which may affect board layout spacing and thermal dissipation characteristics.

Q: Are there packaging differences between these parts?

A: Yes. The Ohmite 43F2K2E is supplied in box packaging, while the Vishay Dale RS02B2K200FE70 is supplied in cut tape format. This affects inventory handling and automated assembly compatibility but does not impact electrical or mechanical performance.

Q: What is the significance of the moisture-resistant feature on the Vishay part?

A: The Vishay Dale RS02B2K200FE70 includes moisture-resistant construction, which provides enhanced protection in humid or corrosive environments. The Ohmite part does not specify this feature. For applications in standard indoor environments, this difference is not functionally significant.

Q: Which part should be selected for maximum operating temperature applications?

A: The Ohmite 43F2K2E supports operation up to 275°C, compared to 250°C for the Vishay Dale RS02B2K200FE70. Select the Ohmite part if the application requires sustained operation above 250°C.