Ohmite 43F15R Equivalent & Substitute Parts

Part Overview

The Ohmite 43F15R is a 15 Ohm ±1% 3W through-hole axial wirewound resistor from the Ohmicone® 40 series. This component is classified as Active product status with 904 units currently in stock. Equivalent and substitute parts are identified when component availability is limited, when specific packaging or compliance requirements must be met, or when design flexibility allows for alternative manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

43F15R

OhmiteIn Stock: 94543F15R Datasheet

Current PartRFQ

43F15RE

OhmiteIn Stock: 96043F15RE Datasheet

DirectRFQ

ALSR0315R00FE12

Vishay DaleIn Stock: 1536ALSR0315R00FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F15R is determined by the following critical parameters:

• Resistance Value: 15 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package Type: Axial (exact match required)
• Termination Count: 2 (exact match required)

All identified substitute parts meet these core electrical and mechanical specifications. Variations in temperature coefficient, physical dimensions, and compliance certifications are noted but do not prevent functional substitution within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

43F15RE (Ohmite): This part is functionally identical to the 43F15R with matching resistance, tolerance, power rating, composition, package type, and physical dimensions. The primary distinction is ROHS3 compliance certification. Selection of 43F15RE is appropriate when RoHS compliance is a design or regulatory requirement. Inventory availability is comparable at 943 units.

ALSR0315R00FE12 (Vishay Dale): This part meets all core electrical specifications (15 Ohms, ±1%, 3W, wirewound, axial) and is ROHS3 compliant. The temperature coefficient is ±30ppm/°C compared to ±20ppm/°C for the Ohmite variants, and physical dimensions are smaller (0.180" Dia x 0.500" L versus 0.220" Dia x 0.594" L). This part includes moisture-resistant features and operates across -65°C to 250°C. Selection is appropriate when space constraints favor smaller dimensions, when extended temperature range is required, or when moisture resistance is beneficial. Inventory availability is highest at 1522 units.

Frequently Asked Questions (FAQ)

Q: Can 43F15RE be used as a direct replacement for 43F15R?

A: Yes. Both parts share identical electrical specifications (15 Ohms ±1%, 3W wirewound) and physical dimensions (0.220" Dia x 0.594" L). The primary difference is RoHS compliance status. Functional substitution is direct.

Q: What are the dimensional differences between the Ohmite and Vishay Dale parts?

A: The Ohmite 43F15R and 43F15RE measure 0.220" diameter by 0.594" length. The Vishay Dale ALSR0315R00FE12 measures 0.180" diameter by 0.500" length. The Vishay part is physically smaller and may require PCB layout verification if space is constrained.

Q: Does the temperature coefficient difference affect substitution?

A: The Ohmite parts specify ±20ppm/°C while the Vishay Dale part specifies ±30ppm/°C. Both fall within acceptable wirewound resistor tolerances. Selection depends on circuit temperature stability requirements. For applications with strict temperature coefficient specifications, verify compatibility with circuit design parameters.

Q: Are all substitute parts in active production?

A: Yes. All three parts (43F15R, 43F15RE, ALSR0315R00FE12) are classified as Active product status with current inventory availability.

Q: Which part should be selected for new designs?

A: For new designs requiring RoHS compliance, select either 43F15RE (Ohmite) or ALSR0315R00FE12 (Vishay Dale). For space-constrained applications, the Vishay Dale ALSR0315R00FE12 offers smaller dimensions. For designs without RoHS requirements and standard space allocation, any of the three parts are functionally equivalent.