Ohmite 41F56R Equivalent & Substitute Parts

Part Overview

The Ohmite 41F56R is a 56 Ohm, ±1% tolerance, 1W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production with 936 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative packaging or compliance requirements necessitate component substitution.

Substiute Parts

41F56R

OhmiteIn Stock: 102841F56R Datasheet

Current PartRFQ

ALSR0156R00FE12

Vishay DaleIn Stock: 759ALSR0156R00FE12 Datasheet

DirectRFQ

41F56RE

OhmiteIn Stock: 143641F56RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 41F56R are qualified based on the following critical parameters:

• Resistance value: 56 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

Substitutes may vary in temperature coefficient, physical dimensions, RoHS compliance status, and moisture resistance features, provided the core electrical and mechanical parameters remain within specification.

Parameter Comparison

Engineering Selection Recommendations

41F56RE (Ohmite): This part is a parametric equivalent within the same manufacturer series. It maintains identical electrical specifications, temperature coefficient, and physical dimensions as the 41F56R. The primary distinction is RoHS3 compliance status. Selection of 41F56RE is appropriate when RoHS compliance is required or when inventory of the primary part is constrained.

ALSR0156R00FE12 (Vishay Dale): This cross-manufacturer substitute meets all core electrical requirements with equivalent resistance, tolerance, and power rating. The ALSR series offers moisture-resistant construction and RoHS3 compliance. Physical dimensions are slightly smaller (0.110" diameter vs. 0.126" diameter), which may affect board layout compatibility. Temperature coefficient is ±30ppm/°C compared to ±20ppm/°C for the primary part. This substitute is suitable for applications requiring enhanced moisture resistance or RoHS compliance, provided dimensional constraints are satisfied.

Frequently Asked Questions (FAQ)

Q: Can ALSR0156R00FE12 be used as a direct drop-in replacement for 41F56R?

A: The ALSR0156R00FE12 meets all electrical specifications but has a smaller physical diameter (0.110" vs. 0.126"). Verify board layout and mounting hole spacing before substitution. Electrical performance is equivalent.

Q: What is the difference between 41F56R and 41F56RE?

A: Both parts are from the Ohmicone® 40 series with identical electrical and physical specifications. The primary difference is RoHS compliance status: 41F56R is RoHS non-compliant, while 41F56RE is ROHS3 compliant. Packaging differs (standard vs. bulk).

Q: Does the higher temperature coefficient of ALSR0156R00FE12 affect circuit performance?

A: The ALSR0156R00FE12 has a temperature coefficient of ±30ppm/°C compared to ±20ppm/°C for the 41F56R. This difference is application-dependent. For precision circuits with tight temperature stability requirements, verify that the higher coefficient remains within acceptable tolerance bands across the operating temperature range.

Q: Are all substitute parts available in the same packaging?

A: No. The 41F56R is supplied in standard packaging, 41F56RE in bulk packaging, and ALSR0156R00FE12 in bulk packaging. Confirm packaging requirements with procurement specifications.

Q: Which substitute should I select for RoHS-compliant applications?

A: Both 41F56RE and ALSR0156R00FE12 are ROHS3 compliant. 41F56RE maintains identical specifications to the primary part, while ALSR0156R00FE12 offers additional moisture resistance. Selection depends on dimensional constraints and moisture exposure requirements.