Equivalent & Substitute Parts for 43F2K7E

Part Overview

The Ohmite 43F2K7E is a 2.7 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 619 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 performance needs.

Substiute Parts

43F2K7E

OhmiteIn Stock: 67443F2K7E Datasheet

Current PartRFQ

RS02B2K700FE70

Vishay DaleIn Stock: 2459RS02B2K700FE70 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F2K7E is determined by strict equivalence across the following critical parameters:

• Resistance Value: 2.7 kOhms (exact match required)
• Tolerance: ±1% (precision class match)
• Power Rating: 3W (thermal capability match)
• Composition: Wirewound (construction type match)
• Package Configuration: Axial through-hole (mechanical compatibility)
• Temperature Coefficient: ±20ppm/°C (stability match)
• Termination Count: 2 (pin configuration match)

The Vishay Dale RS02B2K700FE70 meets all substitution criteria. Both components share identical electrical specifications and compatible axial packaging, enabling direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 43F2K7E and RS02B2K700FE70 are active products with current manufacturing status and full RoHS compliance certification. The Ohmite 43F2K7E maintains a wider operating temperature upper limit (275°C versus 250°C), making it suitable for high-temperature applications approaching the upper thermal boundary. The Vishay Dale RS02B2K700FE70 extends the lower operating temperature range to -65°C, providing enhanced cold-temperature performance. Physical dimensions differ slightly; the Ohmite component is marginally larger in diameter and length. Both components are suitable for direct substitution where electrical specifications and axial package compatibility are the primary selection criteria. Component selection should account for specific thermal environment requirements and available packaging formats (box versus cut tape).

Frequently Asked Questions (FAQ)

Q: Can the RS02B2K700FE70 directly replace the 43F2K7E in existing designs?

A: Yes. Both components share identical resistance value (2.7 kOhms), tolerance (±1%), power rating (3W), temperature coefficient (±20ppm/°C), and axial wirewound construction. Electrical performance is equivalent. Physical dimensions differ slightly; verify PCB layout clearances before substitution.

Q: What are the key differences between these two resistors?

A: Operating temperature ranges differ: 43F2K7E operates -55°C to 275°C; RS02B2K700FE70 operates -65°C to 250°C. Physical dimensions vary: 43F2K7E is 0.220" diameter × 0.594" length; RS02B2K700FE70 is 0.187" diameter × 0.560" length. Packaging differs: 43F2K7E supplied in box format; RS02B2K700FE70 supplied in cut tape format.

Q: Are both components RoHS compliant?

A: Yes. The 43F2K7E is RoHS Compliant. The RS02B2K700FE70 is ROHS3 Compliant. Both meet regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: Which component should be selected for high-temperature applications?

A: The 43F2K7E supports continuous operation to 275°C, making it the appropriate choice for applications requiring maximum thermal capability. The RS02B2K700FE70 is limited to 250°C maximum operating temperature.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: The RS02B2K700FE70 is physically smaller than the 43F2K7E. Verify that PCB hole spacing, lead diameter tolerances, and component clearances accommodate the substitute part dimensions before implementation.