Equivalent & Substitute Parts for 43F4K7E

Part Overview

The 43F4K7E is a 4.7 kOhms ±1% 3W axial wirewound resistor manufactured by Ohmite, part of the Ohmicone® 40 series. This component is designed for through-hole applications requiring precision resistance with moderate power dissipation. The part maintains active product status with 850 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific requirements.

Substiute Parts

43F4K7E

OhmiteIn Stock: 95243F4K7E Datasheet

Current PartRFQ

RS02B4K700FE70

Vishay DaleIn Stock: 1872RS02B4K700FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F4K7E is determined by strict equivalence across the following critical parameters:

• Resistance value: 4.7 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Termination count: 2 (exact match required)
• Regulatory compliance: ROHS3 Compliant (minimum requirement)

The RS02B4K700FE70 from Vishay Dale meets all substitution criteria. Additional features such as moisture resistance do not disqualify a part from substitution but represent enhanced capabilities.

Parameter Comparison

Engineering Selection Recommendations

Both the 43F4K7E and RS02B4K700FE70 are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection between these parts should be based on:

• Physical space constraints: The RS02B4K700FE70 has a smaller diameter (0.187" vs 0.220") and shorter length (0.560" vs 0.594"), making it suitable for compact layouts.
• Environmental exposure: The RS02B4K700FE70 includes moisture-resistant construction, beneficial for applications with humidity exposure.
• Supply chain requirements: The RS02B4K700FE70 is available in Cut Tape packaging with higher inventory (1804 units) compared to Bulk packaging of the 43F4K7E (850 units).
• Electrical performance: Both parts deliver identical electrical characteristics for the specified application parameters.

Frequently Asked Questions (FAQ)

Q: Can RS02B4K700FE70 be used as a direct replacement for 43F4K7E?

A: Yes. Both parts share identical electrical specifications: 4.7 kOhms ±1% at 3W with ±20ppm/°C temperature coefficient. The RS02B4K700FE70 is slightly smaller in physical dimensions and includes moisture-resistant construction, which does not prevent substitution.

Q: What are the physical dimension differences?

A: The 43F4K7E measures 0.220" diameter × 0.594" length. The RS02B4K700FE70 measures 0.187" diameter × 0.560" length. Both are axial through-hole components compatible with standard PCB hole spacing for this resistor class.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification with identical HTSUS codes (8533.21.0080).

Q: Does the moisture-resistant feature of RS02B4K700FE70 affect compatibility?

A: No. Moisture resistance is an additional feature that enhances performance in humid environments but does not impact electrical or mechanical compatibility in standard applications.

Q: What packaging formats are available?

A: The 43F4K7E is supplied in Bulk packaging. The RS02B4K700FE70 is supplied in Cut Tape (CT) format, which may affect procurement workflows and handling procedures.