43FR15 Equivalent & Substitute Parts

Part Overview

The 43FR15 is a 150 mOhms ±1% 3W axial wirewound through-hole resistor manufactured by Ohmite, part of the Ohmicone® 40 series. This component is currently active in production and maintains 932 pieces in new original stock. The part is classified as RoHS non-compliant and is subject to standard export controls (ECCN: EAR99).

Equivalent and substitute parts are identified when design requirements permit component replacement due to inventory constraints, supply chain optimization, or application-specific performance needs. Substitutes must maintain electrical equivalence across resistance value, tolerance, power rating, and composition specifications.

Substiute Parts

43FR15

OhmiteIn Stock: 102143FR15 Datasheet

Current PartRFQ

43FR15E

OhmiteIn Stock: 179443FR15E Datasheet

DirectRFQ

ALSR03R1500FE12

Vishay DaleIn Stock: 1014ALSR03R1500FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43FR15 is determined by strict equivalence across the following electrical and mechanical parameters:

• Resistance value: 150 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

Two substitute parts meet these criteria: 43FR15E (Ohmite) and ALSR03R1500FE12 (Vishay Dale). Both components satisfy the core electrical specifications and maintain axial wirewound construction with identical resistance, tolerance, and power characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three components—43FR15, 43FR15E, and ALSR03R1500FE12—are active production parts with confirmed new original inventory availability.

The 43FR15E represents a direct manufacturer equivalent from Ohmite, maintaining identical physical dimensions (0.220" Dia x 0.594" L) and electrical specifications. This part achieves RoHS compliance and provides an operating temperature range of -55°C to 275°C. Selection of 43FR15E is appropriate when RoHS compliance is required and inventory of the original 43FR15 is constrained.

The ALSR03R1500FE12 from Vishay Dale meets all core electrical requirements and achieves ROHS3 compliance. This component features moisture-resistant construction and operates across -65°C to 250°C. Physical dimensions differ slightly (0.180" Dia x 0.500" L versus 0.220" Dia x 0.594" L), which may affect board layout compatibility. Selection of ALSR03R1500FE12 is appropriate when moisture resistance is a design requirement and physical space constraints permit the smaller form factor.

Frequently Asked Questions (FAQ)

Q: Can 43FR15E be used as a direct replacement for 43FR15?

A: Yes. Both components share identical resistance (150 mOhms), tolerance (±1%), power rating (3W), composition (wirewound), and physical dimensions (0.220" Dia x 0.594" L). The primary difference is RoHS compliance status: 43FR15E is RoHS compliant while 43FR15 is not.

Q: What are the physical dimension differences between 43FR15 and ALSR03R1500FE12?

A: The 43FR15 measures 0.220" diameter by 0.594" length (5.60mm x 15.10mm). The ALSR03R1500FE12 measures 0.180" diameter by 0.500" length (4.57mm x 12.70mm). The Vishay Dale component is smaller in both diameter and length, which may impact PCB layout and mounting considerations.

Q: Are all three parts suitable for the same operating temperature range?

A: Operating temperature specifications differ. The 43FR15E operates from -55°C to 275°C. The ALSR03R1500FE12 operates from -65°C to 250°C. The original 43FR15 does not specify an operating temperature range. Application requirements determine which part is appropriate.

Q: What is the significance of the moisture-resistant feature on ALSR03R1500FE12?

A: The ALSR03R1500FE12 includes moisture-resistant construction as a design feature. This specification is not listed for 43FR15 or 43FR15E. Selection of the Vishay Dale component is appropriate for applications requiring enhanced moisture resistance.

Q: Do all three parts have the same number of terminations?

A: Yes. All three components feature 2 terminations in axial configuration, maintaining electrical and mechanical compatibility for through-hole PCB mounting.