Equivalent & Substitute Parts for Ohmite 81F2K0

Part Overview

The Ohmite 81F2K0 is a 2 kOhms ±1% 1W through-hole resistor with axial wirewound construction from the Acrasil® 80 series. This component is currently active in production and maintains 882 pieces in new original stock. The part is specified for applications requiring precision resistive elements with wirewound composition and tight tolerance characteristics. Substitute parts may be required due to inventory availability, packaging preferences, or compliance requirements specific to end-use applications.

Substiute Parts

81F2K0

OhmiteIn Stock: 95081F2K0 Datasheet

Current PartRFQ

41F2K0E

OhmiteIn Stock: 95341F2K0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 41F2K0E qualifies as a parametric equivalent to the 81F2K0 based on the following critical substitution criteria:

• Identical resistance value: 2 kOhms
• Matching tolerance specification: ±1%
• Equivalent power rating: 1W
• Same composition type: Wirewound
• Identical package configuration: Axial
• Matching temperature coefficient: ±20ppm/°C
• Identical physical dimensions: 0.126" Dia x 0.437" L (3.20mm x 11.10mm)
• Same number of terminations: 2

Both parts share the same ECCN (EAR99) and HTSUS (8533.21.0080) classifications. The primary differences are the product series designation (Acrasil® 80 versus Ohmicone® 40) and packaging format (standard versus bulk), along with RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 81F2K0 and 41F2K0E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

The 41F2K0E offers ROHS3 compliance, making it suitable for applications subject to RoHS3 regulatory requirements. The 81F2K0 is RoHS non-compliant and should be selected only for applications where RoHS compliance is not mandated.

Packaging format differs between the two parts: the 81F2K0 uses standard packaging while the 41F2K0E is supplied in bulk format. Bulk packaging may be preferred for high-volume manufacturing operations, while standard packaging is appropriate for lower-volume or mixed-component procurement scenarios.

Both parts maintain adequate inventory levels (882 and 903 pieces respectively) and share identical ECCN and HTSUS classifications for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the 41F2K0E be used as a direct replacement for the 81F2K0?

A: Yes. Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. The primary consideration is RoHS compliance status.

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

A: Both series are wirewound resistor lines from Ohmite. The series designation reflects different product families within the manufacturer's portfolio. For the specified 2 kOhms ±1% 1W axial configuration, the electrical and mechanical parameters are identical.

Q: Does packaging format affect electrical performance?

A: No. Standard and bulk packaging formats do not affect the electrical characteristics or performance of the resistor. Packaging selection is based on procurement and manufacturing workflow requirements.

Q: Are there any compliance considerations when substituting between these parts?

A: Yes. The 41F2K0E is ROHS3 compliant while the 81F2K0 is RoHS non-compliant. Applications subject to RoHS3 regulations must use the 41F2K0E. Applications without RoHS requirements may use either part.

Q: Do these parts share the same physical footprint?

A: Yes. Both parts have identical dimensions of 0.126" diameter by 0.437" length (3.20mm x 11.10mm) and are configured as axial through-hole components with 2 terminations. PCB layout and mounting considerations are identical.