Ohmite 40F2R0 Equivalent & Substitute Parts

Part Overview

The Ohmite 40F2R0 is a 2 Ohms ±1% 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production with 807 pieces available in stock. Substitute parts are identified when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from equivalent specifications within the same electrical and mechanical parameters.

Substiute Parts

40F2R0

OhmiteIn Stock: 85040F2R0 Datasheet

Current PartRFQ

80F2R0

OhmiteIn Stock: 118180F2R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 40F2R0 are qualified based on the following critical parameters:

• Resistance value: 2 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 10W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Termination count: 2 (exact match required)

The Ohmite 80F2R0 meets all substitution criteria as it maintains identical electrical specifications and package configuration while originating from the Acrasil® 80 series. Physical dimensions vary slightly (1.843" L vs. 1.902" L), which remains within acceptable tolerance for axial component placement in standard through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 40F2R0 and 80F2R0 are active products from Ohmite with identical electrical performance specifications. Selection between these parts should be based on availability and inventory status. The 80F2R0 currently has higher inventory availability (1103 pieces vs. 807 pieces). Both parts carry identical compliance certifications: RoHS non-compliant, REACH Unaffected, and EAR99 ECCN classification. The minor dimensional difference in length (0.059" or 1.50mm shorter for the 80F2R0) does not affect electrical function and remains compatible with standard axial component PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the 80F2R0 directly replace the 40F2R0 in my circuit?

A: Yes. Both parts are 2 Ohms ±1% 10W axial wirewound resistors with identical electrical specifications and temperature coefficients. The slight difference in physical length does not affect electrical performance or standard through-hole mounting.

Q: What is the difference between the Ohmicone® 40 and Acrasil® 80 series?

A: These are different product series from Ohmite with identical electrical and mechanical specifications for this 2 Ohm 10W rating. Series designation reflects internal product categorization but does not impact substitution compatibility.

Q: Are there any compliance differences between these parts?

A: No. Both parts share identical RoHS, REACH, and ECCN classifications. Neither part is RoHS compliant, and both are REACH Unaffected.

Q: Does the shorter length of the 80F2R0 affect PCB layout?

A: The 80F2R0 is 0.059" (1.50mm) shorter in length while maintaining the same 0.406" diameter. This difference is negligible for standard through-hole PCB designs and does not require layout modifications.

Q: Which part should I select if both are available?

A: Selection can be based on inventory availability, lead time, or cost. Both parts are functionally equivalent for this application. The 80F2R0 currently has higher stock levels.